- meta: |
    state = [ # some non-default values to test with
        ('strokeStyle', '"#ff0000"'),
        ('fillStyle', '"#ff0000"'),
        ('globalAlpha', 0.5),
        ('lineWidth', 0.5),
        ('lineCap', '"round"'),
        ('lineJoin', '"round"'),
        ('miterLimit', 0.5),
        ('shadowOffsetX', 5),
        ('shadowOffsetY', 5),
        ('shadowBlur', 5),
        ('shadowColor', '"#ff0000"'),
        ('globalCompositeOperation', '"copy"'),
    ]
    for key,value in state:
        tests.append( {
            'name': '2d.state.saverestore.%s' % key,
            'desc': 'save()/restore() works for %s' % key,
            'testing': [ '2d.state.%s' % key ],
            'code':
    """// Test that restore() undoes any modifications
    var old = ctx.%(key)s;
    ctx.save();
    ctx.%(key)s = %(value)s;
    ctx.restore();
    @assert ctx.%(key)s === old;

    // Also test that save() doesn't modify the values
    ctx.%(key)s = %(value)s;
    old = ctx.%(key)s;
        // we're not interested in failures caused by get(set(x)) != x (e.g.
        // from rounding), so compare against 'old' instead of against %(value)s
    ctx.save();
    @assert ctx.%(key)s === old;
    ctx.restore();
    """ % { 'key':key, 'value':value }
        } )

    tests.append( {
        'name': 'initial.reset.2dstate',
        'desc': 'Resetting the canvas state resets 2D state variables',
        'testing': [ 'initial.reset' ],
        'code':
    """offscreenCanvas.width = 100;
    var default_val;
    """ + "".join(
    """
    default_val = ctx.%(key)s;
    ctx.%(key)s = %(value)s;
    offscreenCanvas.width = 100;
    @assert ctx.%(key)s === default_val;
    """ % { 'key':key, 'value':value }
        for key,value in state),
    } )

- name: 2d.state.saverestore.transformation
  desc: save()/restore() affects the current transformation matrix
  testing:
    - 2d.state.transformation
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.save();
    ctx.translate(200, 0);
    ctx.restore();
    ctx.fillStyle = '#f00';
    ctx.fillRect(-200, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.state.saverestore.clip
  desc: save()/restore() affects the clipping path
  testing:
    - 2d.state.clip
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.save();
    ctx.rect(0, 0, 1, 1);
    ctx.clip();
    ctx.restore();
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.state.saverestore.path
  desc: save()/restore() does not affect the current path
  testing:
    - 2d.state.path
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.save();
    ctx.rect(0, 0, 100, 50);
    ctx.restore();
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.state.saverestore.bitmap
  desc: save()/restore() does not affect the current bitmap
  testing:
    - 2d.state.bitmap
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.save();
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.restore();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.state.saverestore.stack
  desc: save()/restore() can be nested as a stack
  testing:
    - 2d.state.save
    - 2d.state.restore
  code: |
    ctx.lineWidth = 1;
    ctx.save();
    ctx.lineWidth = 2;
    ctx.save();
    ctx.lineWidth = 3;
    @assert ctx.lineWidth === 3;
    ctx.restore();
    @assert ctx.lineWidth === 2;
    ctx.restore();
    @assert ctx.lineWidth === 1;

- name: 2d.state.saverestore.stackdepth
  desc: save()/restore() stack depth is not unreasonably limited
  testing:
    - 2d.state.save
    - 2d.state.restore
  code: |
    var limit = 512;
    for (var i = 1; i < limit; ++i)
    {
        ctx.save();
        ctx.lineWidth = i;
    }
    for (var i = limit-1; i > 0; --i)
    {
        @assert ctx.lineWidth === i;
        ctx.restore();
    }

- name: 2d.state.saverestore.underflow
  desc: restore() with an empty stack has no effect
  testing:
    - 2d.state.restore.underflow
  code: |
    for (var i = 0; i < 16; ++i)
        ctx.restore();
    ctx.lineWidth = 0.5;
    ctx.restore();
    @assert ctx.lineWidth === 0.5;

- name: 2d.transformation.order
  desc: Transformations are applied in the right order
  testing:
    - 2d.transformation.order
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(2, 1);
    ctx.rotate(Math.PI / 2);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, -50, 50, 50);
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.transformation.scale.basic
  desc: scale() works
  testing:
    - 2d.transformation.scale
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(2, 4);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 12.5);
    @assert pixel 90,40 == 0,255,0,255;

- name: 2d.transformation.scale.zero
  desc: scale() with a scale factor of zero works
  testing:
    - 2d.transformation.scale
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.save();
    ctx.translate(50, 0);
    ctx.scale(0, 1);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.restore();
    ctx.save();
    ctx.translate(0, 25);
    ctx.scale(1, 0);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.restore();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.scale.negative
  desc: scale() with negative scale factors works
  testing:
    - 2d.transformation.scale
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.save();
    ctx.scale(-1, 1);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-50, 0, 50, 50);
    ctx.restore();
    ctx.save();
    ctx.scale(1, -1);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(50, -50, 50, 50);
    ctx.restore();
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.transformation.scale.large
  desc: scale() with large scale factors works
  notes: Not really that large at all, but it hits the limits in Firefox.
  testing:
    - 2d.transformation.scale
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(1e5, 1e5);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 1, 1);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.scale.nonfinite
  desc: scale() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(100, 10);
    @nonfinite ctx.scale(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -10, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.scale.multiple
  desc: Multiple scale()s combine
  testing:
    - 2d.transformation.scale.multiple
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(Math.sqrt(2), Math.sqrt(2));
    ctx.scale(Math.sqrt(2), Math.sqrt(2));
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 25);
    @assert pixel 90,40 == 0,255,0,255;


- name: 2d.transformation.rotate.zero
  desc: rotate() by 0 does nothing
  testing:
    - 2d.transformation.rotate
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rotate(0);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.rotate.radians
  desc: rotate() uses radians
  testing:
    - 2d.transformation.rotate.radians
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -50, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.rotate.direction
  desc: rotate() is clockwise
  testing:
    - 2d.transformation.rotate.direction
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rotate(Math.PI / 2);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, -100, 50, 100);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.rotate.wrap
  desc: rotate() wraps large positive values correctly
  testing:
    - 2d.transformation.rotate
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
    // We need about pi +/- 0.001 in order to get correct-looking results
    // 32-bit floats can store pi*4097 with precision 2^-10, so that should
    // be safe enough on reasonable implementations
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -50, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,2 == 0,255,0,255;
    @assert pixel 98,47 == 0,255,0,255;

- name: 2d.transformation.rotate.wrapnegative
  desc: rotate() wraps large negative values correctly
  testing:
    - 2d.transformation.rotate
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rotate(-Math.PI * (1 + 4096));
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -50, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,2 == 0,255,0,255;
    @assert pixel 98,47 == 0,255,0,255;

- name: 2d.transformation.rotate.nonfinite
  desc: rotate() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(100, 10);
    @nonfinite ctx.rotate(<0.1 Infinity -Infinity NaN>);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -10, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.translate.basic
  desc: translate() works
  testing:
    - 2d.transformation.translate
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -50, 100, 50);
    @assert pixel 90,40 == 0,255,0,255;

- name: 2d.transformation.translate.nonfinite
  desc: translate() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(100, 10);
    @nonfinite ctx.translate(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -10, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;


- name: 2d.transformation.transform.identity
  desc: transform() with the identity matrix does nothing
  testing:
    - 2d.transformation.transform
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.transform(1,0, 0,1, 0,0);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.transform.skewed
  desc: transform() with skewy matrix transforms correctly
  testing:
    - 2d.transformation.transform
  code: |
    // Create green with a red square ring inside it
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(20, 10, 60, 30);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(40, 20, 20, 10);
    // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
    ctx.transform(1,4, 2,3, 5,6);
    // Post-transform coordinates:
    //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
    // Hence pre-transform coordinates:
    var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
             [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
             [-7.4,11.2]];
    ctx.beginPath();
    ctx.moveTo(pts[0][0], pts[0][1]);
    for (var i = 0; i < pts.length; ++i)
        ctx.lineTo(pts[i][0], pts[i][1]);
    ctx.fill();
    @assert pixel 21,11 == 0,255,0,255;
    @assert pixel 79,11 == 0,255,0,255;
    @assert pixel 21,39 == 0,255,0,255;
    @assert pixel 79,39 == 0,255,0,255;
    @assert pixel 39,19 == 0,255,0,255;
    @assert pixel 61,19 == 0,255,0,255;
    @assert pixel 39,31 == 0,255,0,255;
    @assert pixel 61,31 == 0,255,0,255;

- name: 2d.transformation.transform.multiply
  desc: transform() multiplies the CTM
  testing:
    - 2d.transformation.transform.multiply
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.transform(1,2, 3,4, 5,6);
    ctx.transform(-2,1, 3/2,-1/2, 1,-2);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.transformation.transform.nonfinite
  desc: transform() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(100, 10);
    @nonfinite ctx.transform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -10, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;


- name: 2d.transformation.setTransform.skewed
  testing:
    - 2d.transformation.setTransform
  code: |
    // Create green with a red square ring inside it
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(20, 10, 60, 30);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(40, 20, 20, 10);
    // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
    ctx.setTransform(1,4, 2,3, 5,6);
    // Post-transform coordinates:
    //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
    // Hence pre-transform coordinates:
    var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
             [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
             [-7.4,11.2]];
    ctx.beginPath();
    ctx.moveTo(pts[0][0], pts[0][1]);
    for (var i = 0; i < pts.length; ++i)
        ctx.lineTo(pts[i][0], pts[i][1]);
    ctx.fill();
    @assert pixel 21,11 == 0,255,0,255;
    @assert pixel 79,11 == 0,255,0,255;
    @assert pixel 21,39 == 0,255,0,255;
    @assert pixel 79,39 == 0,255,0,255;
    @assert pixel 39,19 == 0,255,0,255;
    @assert pixel 61,19 == 0,255,0,255;
    @assert pixel 39,31 == 0,255,0,255;
    @assert pixel 61,31 == 0,255,0,255;

- name: 2d.transformation.setTransform.multiple
  testing:
    - 2d.transformation.setTransform.identity
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.setTransform(1/2,0, 0,1/2, 0,0);
    ctx.setTransform(2,0, 0,2, 0,0);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 25);
    @assert pixel 75,35 == 0,255,0,255;

- name: 2d.transformation.setTransform.nonfinite
  desc: setTransform() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(100, 10);
    @nonfinite ctx.setTransform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, -10, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.composite.globalAlpha.range
  testing:
    - 2d.composite.globalAlpha.range
  code: |
    ctx.globalAlpha = 0.5;
    var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons
    ctx.globalAlpha = 1.1;
    @assert ctx.globalAlpha === a;
    ctx.globalAlpha = -0.1;
    @assert ctx.globalAlpha === a;
    ctx.globalAlpha = 0;
    @assert ctx.globalAlpha === 0;
    ctx.globalAlpha = 1;
    @assert ctx.globalAlpha === 1;

- name: 2d.composite.globalAlpha.invalid
  testing:
    - 2d.composite.globalAlpha.range
  code: |
    ctx.globalAlpha = 0.5;
    var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons
    ctx.globalAlpha = Infinity;
    @assert ctx.globalAlpha === a;
    ctx.globalAlpha = -Infinity;
    @assert ctx.globalAlpha === a;
    ctx.globalAlpha = NaN;
    @assert ctx.globalAlpha === a;

- name: 2d.composite.globalAlpha.default
  testing:
    - 2d.composite.globalAlpha.default
  code: |
    @assert ctx.globalAlpha === 1.0;

- name: 2d.composite.globalAlpha.fill
  testing:
    - 2d.composite.globalAlpha.shape
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 ==~ 2,253,0,255;

- name: 2d.composite.globalAlpha.image
  testing:
    - 2d.composite.globalAlpha.image
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 2,253,0,255;
    });

- name: 2d.composite.globalAlpha.canvas
  testing:
    - 2d.composite.globalAlpha.image
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#f00';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations
    ctx.drawImage(offscreenCanvas2, 0, 0);
    @assert pixel 50,25 ==~ 2,253,0,255;

- name: 2d.composite.globalAlpha.imagepattern
  testing:
    - 2d.composite.globalAlpha.image
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.fillStyle = ctx.createPattern(response, 'no-repeat');
        ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 50,25 ==~ 2,253,0,255;
    });

- name: 2d.composite.globalAlpha.canvaspattern
  testing:
    - 2d.composite.globalAlpha.image
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#f00';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = ctx.createPattern(offscreenCanvas2, 'no-repeat');
    ctx.globalAlpha = 0.01; // avoid any potential alpha=0 optimisations
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 ==~ 2,253,0,255;

- name: 2d.composite.globalAlpha.canvascopy
  testing:
    - 2d.composite.globalAlpha.image
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#0f0';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = 'copy'
    ctx.globalAlpha = 0.51;
    ctx.drawImage(offscreenCanvas2, 0, 0);
    @assert pixel 50,25 ==~ 0,255,0,130;


- meta: |
    # Composite operation tests
    # <http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2007-March/010608.html>
    ops = [
        # name               FA      FB
        ('source-over',      '1',    '1-aA'),
        ('destination-over', '1-aB', '1'),
        ('source-in',        'aB',   '0'),
        ('destination-in',   '0',    'aA'),
        ('source-out',       '1-aB', '0'),
        ('destination-out',  '0',    '1-aA'),
        ('source-atop',      'aB',   '1-aA'),
        ('destination-atop', '1-aB', 'aA'),
        ('xor',              '1-aB', '1-aA'),
        ('copy',             '1',    '0'),
        ('lighter',          '1',    '1'),
    ]

    # The ones that change the output when src = (0,0,0,0):
    ops_trans = [ 'source-in', 'destination-in', 'source-out', 'destination-atop', 'copy' ];

    def calc_output((RA, GA, BA, aA), (RB, GB, BB, aB), FA_code, FB_code):
        rA, gA, bA = RA*aA, GA*aA, BA*aA
        rB, gB, bB = RB*aB, GB*aB, BB*aB

        FA = eval(FA_code)
        FB = eval(FB_code)

        rO = rA*FA + rB*FB
        gO = gA*FA + gB*FB
        bO = bA*FA + bB*FB
        aO = aA*FA + aB*FB

        rO = min(255, rO)
        gO = min(255, gO)
        bO = min(255, bO)
        aO = min(1, aO)

        if aO:
            RO = rO / aO
            GO = gO / aO
            BO = bO / aO
        else: RO = GO = BO = 0

        return (RO, GO, BO, aO)

    def to_test((r,g,b,a)):
        return '%d,%d,%d,%d' % (round(r), round(g), round(b), round(a*255))
    def to_cairo((r,g,b,a)):
        return '%f,%f,%f,%f' % (r/255., g/255., b/255., a)

    for (name, src, dest) in [
        ('solid', (255, 255, 0, 1.0), (0, 255, 255, 1.0)),
        ('transparent', (0, 0, 255, 0.75), (0, 255, 0, 0.5)),
            # catches the atop, xor and lighter bugs in Opera 9.10
    ]:
        for op, FA_code, FB_code in ops:
            expected = calc_output(src, dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'testing': [ '2d.composite.%s' % op ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 ==~ %s +/- 5;
    """ % (dest, op, src, to_test(expected)),
            } )

    for (name, src, dest) in [ ('image', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            expected = calc_output(src, dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'testing': [ '2d.composite.%s' % op ],
                'images': [ 'yellow75.png' ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow75.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ %s +/- 5;
    });
    """ % (dest, op, to_test(expected)),
            } )

    for (name, src, dest) in [ ('canvas', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            expected = calc_output(src, dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'testing': [ '2d.composite.%s' % op ],
                'images': [ 'yellow75.png' ],
                'code': """
    var offscreenCanvas2 = new OffscreenCanvas(offscreenCanvas.width, offscreenCanvas.height);
    var ctx2 = offscreenCanvas2.getContext('2d');
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow75.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx2.drawImage(response, 0, 0);
        ctx.fillStyle = 'rgba%s';
        ctx.fillRect(0, 0, 100, 50);
        ctx.globalCompositeOperation = '%s';
        ctx.drawImage(offscreenCanvas2, 0, 0);
        @assert pixel 50,25 ==~ %s +/- 5;
    });
    """ % (dest, op, to_test(expected)),
            } )

    for (name, src, dest) in [ ('uncovered.fill', (0, 0, 255, 0.75), (0, 255, 0, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
                'testing': [ '2d.composite.%s' % op ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    ctx.fillStyle = 'rgba%s';
    ctx.translate(0, 25);
    ctx.fillRect(0, 50, 100, 50);
    @assert pixel 50,25 ==~ %s +/- 5;
    """ % (dest, op, src, to_test(expected0)),
            } )

    for (name, src, dest) in [ ('uncovered.image', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
                'testing': [ '2d.composite.%s' % op ],
                'images': [ 'yellow.png' ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 40, 40, 10, 10, 40, 50, 10, 10);
        @assert pixel 15,15 ==~ %s +/- 5;
        @assert pixel 50,25 ==~ %s +/- 5;
    });
    """ % (dest, op, to_test(expected0), to_test(expected0)),
            } )

    for (name, src, dest) in [ ('uncovered.nocontext', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.',
                'testing': [ '2d.composite.%s' % op ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    ctx.drawImage(offscreenCanvas2, 0, 0);
    @assert pixel 50,25 ==~ %s +/- 5;
    """ % (dest, op, to_test(expected0)),
            } )

    for (name, src, dest) in [ ('uncovered.pattern', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
                'testing': [ '2d.composite.%s' % op ],
                'images': [ 'yellow.png' ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.fillStyle = ctx.createPattern(response, 'no-repeat');
        ctx.fillRect(0, 50, 100, 50);
        @assert pixel 50,25 ==~ %s +/- 5;
    });
    """ % (dest, op, to_test(expected0)),
            } )

    for op, FA_code, FB_code in ops:
        tests.append( {
            'name': '2d.composite.clip.%s' % (op),
            'desc': 'fill() does not affect pixels outside the clip region.',
            'testing': [ '2d.composite.%s' % op ],
            'code': """
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    ctx.rect(-20, -20, 10, 10);
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;
    """ % (op),
        } )

- name: 2d.composite.operation.get
  testing:
    - 2d.composite.operation
  code: |
    var modes = ['source-atop', 'source-in', 'source-out', 'source-over',
        'destination-atop', 'destination-in', 'destination-out', 'destination-over',
        'lighter', 'copy', 'xor'];
    for (var i = 0; i < modes.length; ++i)
    {
        ctx.globalCompositeOperation = modes[i];
        @assert ctx.globalCompositeOperation === modes[i];
    }

- name: 2d.composite.operation.unrecognised
  testing:
    - 2d.composite.operation.unrecognised
  code: |
    ctx.globalCompositeOperation = 'xor';
    ctx.globalCompositeOperation = 'nonexistent';
    @assert ctx.globalCompositeOperation === 'xor';

- name: 2d.composite.operation.darker
  testing:
    - 2d.composite.operation.unrecognised
  code: |
    ctx.globalCompositeOperation = 'xor';
    ctx.globalCompositeOperation = 'darker';
    @assert ctx.globalCompositeOperation === 'xor';

- name: 2d.composite.operation.over
  testing:
    - 2d.composite.operation.unrecognised
  code: |
    ctx.globalCompositeOperation = 'xor';
    ctx.globalCompositeOperation = 'over';
    @assert ctx.globalCompositeOperation === 'xor';

- name: 2d.composite.operation.clear
  testing:
    - 2d.composite.operation.clear
  code: |
    ctx.globalCompositeOperation = 'xor';
    ctx.globalCompositeOperation = 'clear';
    @assert ctx.globalCompositeOperation === 'clear';

- name: 2d.composite.operation.highlight
  testing:
    - 2d.composite.operation.unrecognised
  code: |
    ctx.globalCompositeOperation = 'xor';
    ctx.globalCompositeOperation = 'highlight';
    @assert ctx.globalCompositeOperation === 'xor';

- name: 2d.composite.operation.nullsuffix
  testing:
    - 2d.composite.operation.exact
  code: |
    ctx.globalCompositeOperation = 'xor';
    ctx.globalCompositeOperation = 'source-over\0';
    @assert ctx.globalCompositeOperation === 'xor';

- name: 2d.composite.operation.casesensitive
  testing:
    - 2d.composite.operation.casesensitive
  code: |
    ctx.globalCompositeOperation = 'xor';
    ctx.globalCompositeOperation = 'Source-over';
    @assert ctx.globalCompositeOperation === 'xor';

- name: 2d.composite.operation.default
  testing:
    - 2d.composite.operation.default
  code: |
    @assert ctx.globalCompositeOperation === 'source-over';

- meta: |
    # Colour parsing tests

    # Try most of the CSS3 Color <color> values - http://www.w3.org/TR/css3-color/#colorunits
    big_float = '1' + ('0' * 39)
    big_double = '1' + ('0' * 310)
    for name, string, r,g,b,a, notes in [
        ('html4', 'limE', 0,255,0,255, ""),
        ('hex3', '#0f0', 0,255,0,255, ""),
        ('hex4', '#0f0f', 0,255,0,255, ""),
        ('hex6', '#00fF00', 0,255,0,255, ""),
        ('hex8', '#00ff00ff', 0,255,0,255, ""),
        ('rgb-num', 'rgb(0,255,0)', 0,255,0,255, ""),
        ('rgb-clamp-1', 'rgb(-1000, 1000, -1000)', 0,255,0,255, 'Assumes colours are clamped to [0,255].'),
        ('rgb-clamp-2', 'rgb(-200%, 200%, -200%)', 0,255,0,255, 'Assumes colours are clamped to [0,255].'),
        ('rgb-clamp-3', 'rgb(-2147483649, 4294967298, -18446744073709551619)', 0,255,0,255, 'Assumes colours are clamped to [0,255].'),
        ('rgb-clamp-4', 'rgb(-'+big_float+', '+big_float+', -'+big_float+')', 0,255,0,255, 'Assumes colours are clamped to [0,255].'),
        ('rgb-clamp-5', 'rgb(-'+big_double+', '+big_double+', -'+big_double+')', 0,255,0,255, 'Assumes colours are clamped to [0,255].'),
        ('rgb-percent', 'rgb(0% ,100% ,0%)', 0,255,0,255, 'CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)'),
        ('rgb-eof', 'rgb(0, 255, 0', 0,255,0,255, ""), # see CSS2.1 4.2 "Unexpected end of style sheet"
        ('rgba-solid-1', 'rgba(  0  ,  255  ,  0  ,  1  )', 0,255,0,255, ""),
        ('rgba-solid-2', 'rgba(  0  ,  255  ,  0  ,  1.0  )', 0,255,0,255, ""),
        ('rgba-solid-3', 'rgba(  0  ,  255  ,  0  , +1  )', 0,255,0,255, ""),
        ('rgba-solid-4', 'rgba( -0  ,  255  , +0  ,  1  )', 0,255,0,255, ""),
        ('rgba-num-1', 'rgba(  0  ,  255  ,  0  ,  .499  )', 0,255,0,127, ""),
        ('rgba-num-2', 'rgba(  0  ,  255  ,  0  ,  0.499  )', 0,255,0,127, ""),
        ('rgba-percent', 'rgba(0%,100%,0%,0.499)', 0,255,0,127, ""), # 0.499*255 rounds to 127, both down and nearest, so it should be safe
        ('rgba-clamp-1', 'rgba(0, 255, 0, -2)', 0,0,0,0, ""),
        ('rgba-clamp-2', 'rgba(0, 255, 0, 2)', 0,255,0,255, ""),
        ('rgba-eof', 'rgba(0, 255, 0, 1', 0,255,0,255, ""),
        ('transparent-1', 'transparent', 0,0,0,0, ""),
        ('transparent-2', 'TrAnSpArEnT', 0,0,0,0, ""),
        ('hsl-1', 'hsl(120, 100%, 50%)', 0,255,0,255, ""),
        ('hsl-2', 'hsl( -240 , 100% , 50% )', 0,255,0,255, ""),
        ('hsl-3', 'hsl(360120, 100%, 50%)', 0,255,0,255, ""),
        ('hsl-4', 'hsl(-360240, 100%, 50%)', 0,255,0,255, ""),
        ('hsl-5', 'hsl(120.0, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('hsl-6', 'hsl(+120, +100%, +50%)', 0,255,0,255, ""),
        ('hsl-clamp-1', 'hsl(120, 200%, 50%)', 0,255,0,255, ""),
        ('hsl-clamp-2', 'hsl(120, -200%, 49.9%)', 127,127,127,255, ""),
        ('hsl-clamp-3', 'hsl(120, 100%, 200%)', 255,255,255,255, ""),
        ('hsl-clamp-4', 'hsl(120, 100%, -200%)', 0,0,0,255, ""),
        ('hsla-1', 'hsla(120, 100%, 50%, 0.499)', 0,255,0,127, ""),
        ('hsla-2', 'hsla( 120.0 , 100.0% , 50.0% , 1 )', 0,255,0,255, ""),
        ('hsla-clamp-1', 'hsla(120, 200%, 50%, 1)', 0,255,0,255, ""),
        ('hsla-clamp-2', 'hsla(120, -200%, 49.9%, 1)', 127,127,127,255, ""),
        ('hsla-clamp-3', 'hsla(120, 100%, 200%, 1)', 255,255,255,255, ""),
        ('hsla-clamp-4', 'hsla(120, 100%, -200%, 1)', 0,0,0,255, ""),
        ('hsla-clamp-5', 'hsla(120, 100%, 50%, 2)', 0,255,0,255, ""),
        ('hsla-clamp-6', 'hsla(120, 100%, 0%, -2)', 0,0,0,0, ""),
        ('svg-1', 'gray', 128,128,128,255, ""),
        ('svg-2', 'grey', 128,128,128,255, ""),
        # css-color-4 rgb() color function
        #   https://drafts.csswg.org/css-color/#numeric-rgb
        ('css-color-4-rgb-1', 'rgb(0, 255.0, 0)', 0,255,0,255, ""),
        ('css-color-4-rgb-2', 'rgb(0, 255, 0, 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgb-3', 'rgb(0, 255, 0, 20%)', 0,255,0,51, ""),
        ('css-color-4-rgb-4', 'rgb(0 255 0)', 0,255,0,255, ""),
        ('css-color-4-rgb-5', 'rgb(0 255 0 / 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgb-6', 'rgb(0 255 0 / 20%)', 0,255,0,51, ""),
        ('css-color-4-rgba-1', 'rgba(0, 255.0, 0)', 0,255,0,255, ""),
        ('css-color-4-rgba-2', 'rgba(0, 255, 0, 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgba-3', 'rgba(0, 255, 0, 20%)', 0,255,0,51, ""),
        ('css-color-4-rgba-4', 'rgba(0 255 0)', 0,255,0,255, ""),
        ('css-color-4-rgba-5', 'rgba(0 255 0 / 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgba-6', 'rgba(0 255 0 / 20%)', 0,255,0,51, ""),
        # css-color-4 hsl() color function
        #   https://drafts.csswg.org/css-color/#the-hsl-notation
        ('css-color-4-hsl-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsl-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsl-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
        ('css-color-4-hsl-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsl-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsla-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsla-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
        ('css-color-4-hsla-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsla-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
        # currentColor is handled later
    ]:
        # TODO: test by retrieving fillStyle, instead of actually drawing?
        # TODO: test strokeStyle, shadowColor in the same way
        test = {
            'name': '2d.fillStyle.parse.%s' % name,
            'testing': [ '2d.colours.parse' ],
            'notes': notes,
            'code': """
    ctx.fillStyle = '#f00';
    ctx.fillStyle = '%s';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == %d,%d,%d,%d;
    """ % (string, r,g,b,a),
        }
        tests.append(test)

    # Also test that invalid colours are ignored
    for name, string in [
        ('hex1', '#f'),
        ('hex2', '#f0'),
        ('hex3', '#g00'),
        ('hex4', '#fg00'),
        ('hex5', '#ff000'),
        ('hex6', '#fg0000'),
        ('hex7', '#ff0000f'),
        ('hex8', '#fg0000ff'),
        ('rgb-1', 'rgb(255.0, 0, 0,)'),
        ('rgb-2', 'rgb(100%, 0, 0)'),
        ('rgb-3', 'rgb(255, - 1, 0)'),
        ('rgba-1', 'rgba(100%, 0, 0, 1)'),
        ('rgba-2', 'rgba(255, 0, 0, 1. 0)'),
        ('rgba-3', 'rgba(255, 0, 0, 1.)'),
        ('rgba-4', 'rgba(255, 0, 0, '),
        ('rgba-5', 'rgba(255, 0, 0, 1,)'),
        ('hsl-1', 'hsl(0%, 100%, 50%)'),
        ('hsl-2', 'hsl(z, 100%, 50%)'),
        ('hsl-3', 'hsl(0, 0, 50%)'),
        ('hsl-4', 'hsl(0, 100%, 0)'),
        ('hsl-5', 'hsl(0, 100.%, 50%)'),
        ('hsl-6', 'hsl(0, 100%, 50%,)'),
        ('hsla-1', 'hsla(0%, 100%, 50%, 1)'),
        ('hsla-2', 'hsla(0, 0, 50%, 1)'),
        ('hsla-3', 'hsla(0, 0, 50%, 1,)'),
        ('name-1', 'darkbrown'),
        ('name-2', 'firebrick1'),
        ('name-3', 'red blue'),
        ('name-4', '"red"'),
        ('name-5', '"red'),
        # css-color-4 color function
        #   comma and comma-less expressions should not mix together.
        ('css-color-4-rgb-1', 'rgb(255, 0, 0 / 1)'),
        ('css-color-4-rgb-2', 'rgb(255 0 0, 1)'),
        ('css-color-4-rgb-3', 'rgb(255, 0 0)'),
        ('css-color-4-rgba-1', 'rgba(255, 0, 0 / 1)'),
        ('css-color-4-rgba-2', 'rgba(255 0 0, 1)'),
        ('css-color-4-rgba-3', 'rgba(255, 0 0)'),
        ('css-color-4-hsl-1', 'hsl(0, 100%, 50% / 1)'),
        ('css-color-4-hsl-2', 'hsl(0 100% 50%, 1)'),
        ('css-color-4-hsl-3', 'hsl(0, 100% 50%)'),
        ('css-color-4-hsla-1', 'hsla(0, 100%, 50% / 1)'),
        ('css-color-4-hsla-2', 'hsla(0 100% 50%, 1)'),
        ('css-color-4-hsla-3', 'hsla(0, 100% 50%)'),
        #  trailing slash
        ('css-color-4-rgb-4', 'rgb(0 0 0 /)'),
        ('css-color-4-rgb-5', 'rgb(0, 0, 0 /)'),
        ('css-color-4-hsl-4', 'hsl(0 100% 50% /)'),
        ('css-color-4-hsl-5', 'hsl(0, 100%, 50% /)'),
    ]:
        test = {
            'name': '2d.fillStyle.parse.invalid.%s' % name,
            'testing': [ '2d.colours.parse' ],
            'code': """
    ctx.fillStyle = '#0f0';
    try { ctx.fillStyle = '%s'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;
    """ % string,
        }
        tests.append(test)

    # Some can't have positive tests, only negative tests, because we don't know what colour they're meant to be
    for name, string in [
        ('system', 'ThreeDDarkShadow'),
        #('flavor', 'flavor'), # removed from latest CSS3 Color drafts
    ]:
        test = {
            'name': '2d.fillStyle.parse.%s' % name,
            'testing': [ '2d.colours.parse' ],
            'code': """
    ctx.fillStyle = '#f00';
    ctx.fillStyle = '%s';
    @assert ctx.fillStyle =~ /^#(?!(FF0000|ff0000|f00)$)/; // test that it's not red
    """ % (string,),
        }
        tests.append(test)

- name: 2d.fillStyle.invalidstring
  testing:
    - 2d.colours.invalidstring
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillStyle = 'invalid';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillStyle.invalidtype
  testing:
    - 2d.colours.invalidtype
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillStyle = null;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillStyle.get.solid
  testing:
    - 2d.colours.getcolour
    - 2d.serializecolour.solid
  code: |
    ctx.fillStyle = '#fa0';
    @assert ctx.fillStyle === '#ffaa00';

- name: 2d.fillStyle.get.semitransparent
  testing:
    - 2d.colours.getcolour
    - 2d.serializecolour.transparent
  code: |
    ctx.fillStyle = 'rgba(255,255,255,0.45)';
    @assert ctx.fillStyle =~ /^rgba\(255, 255, 255, 0\.4\d+\)$/;

- name: 2d.fillStyle.get.transparent
  testing:
    - 2d.colours.getcolour
    - 2d.serializecolour.transparent
  code: |
    ctx.fillStyle = 'rgba(0,0,0,0)';
    @assert ctx.fillStyle === 'rgba(0, 0, 0, 0)';

- name: 2d.fillStyle.default
  testing:
    - 2d.colours.default
  code: |
    @assert ctx.fillStyle === '#000000';

- name: 2d.strokeStyle.default
  testing:
    - 2d.colours.default
  code: |
    @assert ctx.strokeStyle === '#000000';

- name: 2d.gradient.interpolate.solid
  testing:
    - 2d.gradient.interpolate.linear
  code: |
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.gradient.interpolate.colour
  testing:
    - 2d.gradient.interpolate.linear
  code: |
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    g.addColorStop(0, '#ff0');
    g.addColorStop(1, '#00f');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 25,25 ==~ 191,191,63,255 +/- 3;
    @assert pixel 50,25 ==~ 127,127,127,255 +/- 3;
    @assert pixel 75,25 ==~ 63,63,191,255 +/- 3;

- name: 2d.gradient.interpolate.alpha
  testing:
    - 2d.gradient.interpolate.linear
  code: |
    ctx.fillStyle = '#ff0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    g.addColorStop(0, 'rgba(0,0,255, 0)');
    g.addColorStop(1, 'rgba(0,0,255, 1)');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 25,25 ==~ 191,191,63,255 +/- 3;
    @assert pixel 50,25 ==~ 127,127,127,255 +/- 3;
    @assert pixel 75,25 ==~ 63,63,191,255 +/- 3;

- name: 2d.gradient.interpolate.colouralpha
  testing:
    - 2d.gradient.interpolate.alpha
  code: |
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    g.addColorStop(0, 'rgba(255,255,0, 0)');
    g.addColorStop(1, 'rgba(0,0,255, 1)');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 25,25 ==~ 190,190,65,65 +/- 3;
    @assert pixel 50,25 ==~ 126,126,128,128 +/- 3;
    @assert pixel 75,25 ==~ 62,62,192,192 +/- 3;

- name: 2d.gradient.interpolate.outside
  testing:
    - 2d.gradient.outside.first
    - 2d.gradient.outside.last
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createLinearGradient(25, 0, 75, 0);
    g.addColorStop(0.4, '#0f0');
    g.addColorStop(0.6, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 20,25 ==~ 0,255,0,255;
    @assert pixel 50,25 ==~ 0,255,0,255;
    @assert pixel 80,25 ==~ 0,255,0,255;

- name: 2d.gradient.interpolate.zerosize.fill
  testing:
    - 2d.gradient.linear.zerosize
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.rect(0, 0, 100, 50);
    ctx.fill();
    @assert pixel 40,20 == 0,255,0,255;

- name: 2d.gradient.interpolate.zerosize.stroke
  testing:
    - 2d.gradient.linear.zerosize
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.strokeStyle = g;
    ctx.rect(20, 20, 60, 10);
    ctx.stroke();
    @assert pixel 19,19 == 0,255,0,255;
    @assert pixel 20,19 == 0,255,0,255;
    @assert pixel 21,19 == 0,255,0,255;
    @assert pixel 19,20 == 0,255,0,255;
    @assert pixel 20,20 == 0,255,0,255;
    @assert pixel 21,20 == 0,255,0,255;
    @assert pixel 19,21 == 0,255,0,255;
    @assert pixel 20,21 == 0,255,0,255;
    @assert pixel 21,21 == 0,255,0,255;

- name: 2d.gradient.interpolate.zerosize.fillRect
  testing:
    - 2d.gradient.linear.zerosize
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 40,20 == 0,255,0,255; @moz-todo

- name: 2d.gradient.interpolate.zerosize.strokeRect
  testing:
    - 2d.gradient.linear.zerosize
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.strokeStyle = g;
    ctx.strokeRect(20, 20, 60, 10);
    @assert pixel 19,19 == 0,255,0,255;
    @assert pixel 20,19 == 0,255,0,255;
    @assert pixel 21,19 == 0,255,0,255;
    @assert pixel 19,20 == 0,255,0,255;
    @assert pixel 20,20 == 0,255,0,255;
    @assert pixel 21,20 == 0,255,0,255;
    @assert pixel 19,21 == 0,255,0,255;
    @assert pixel 20,21 == 0,255,0,255;
    @assert pixel 21,21 == 0,255,0,255;


- name: 2d.gradient.interpolate.vertical
  testing:
    - 2d.gradient.interpolate.linear
  code: |
    var g = ctx.createLinearGradient(0, 0, 0, 50);
    g.addColorStop(0, '#ff0');
    g.addColorStop(1, '#00f');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,12 ==~ 191,191,63,255 +/- 10;
    @assert pixel 50,25 ==~ 127,127,127,255 +/- 5;
    @assert pixel 50,37 ==~ 63,63,191,255 +/- 10;

- name: 2d.gradient.interpolate.multiple
  testing:
    - 2d.gradient.interpolate.linear
  code: |
    offscreenCanvas.width = 200;
    var g = ctx.createLinearGradient(0, 0, 200, 0);
    g.addColorStop(0, '#ff0');
    g.addColorStop(0.5, '#0ff');
    g.addColorStop(1, '#f0f');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 200, 50);
    @assert pixel 50,25 ==~ 127,255,127,255 +/- 3;
    @assert pixel 100,25 ==~ 0,255,255,255 +/- 3;
    @assert pixel 150,25 ==~ 127,127,255,255 +/- 3;

- name: 2d.gradient.interpolate.overlap
  testing:
    - 2d.gradient.interpolate.overlap
  code: |
    offscreenCanvas.width = 200;
    var g = ctx.createLinearGradient(0, 0, 200, 0);
    g.addColorStop(0, '#f00');
    g.addColorStop(0, '#ff0');
    g.addColorStop(0.25, '#00f');
    g.addColorStop(0.25, '#0f0');
    g.addColorStop(0.25, '#0f0');
    g.addColorStop(0.25, '#0f0');
    g.addColorStop(0.25, '#ff0');
    g.addColorStop(0.5, '#00f');
    g.addColorStop(0.5, '#0f0');
    g.addColorStop(0.75, '#00f');
    g.addColorStop(0.75, '#f00');
    g.addColorStop(0.75, '#ff0');
    g.addColorStop(0.5, '#0f0');
    g.addColorStop(0.5, '#0f0');
    g.addColorStop(0.5, '#ff0');
    g.addColorStop(1, '#00f');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 200, 50);
    @assert pixel 49,25 ==~ 0,0,255,255 +/- 16;
    @assert pixel 51,25 ==~ 255,255,0,255 +/- 16;
    @assert pixel 99,25 ==~ 0,0,255,255 +/- 16;
    @assert pixel 101,25 ==~ 255,255,0,255 +/- 16;
    @assert pixel 149,25 ==~ 0,0,255,255 +/- 16;
    @assert pixel 151,25 ==~ 255,255,0,255 +/- 16;

- name: 2d.gradient.interpolate.overlap2
  testing:
    - 2d.gradient.interpolate.overlap
  code: |
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    var ps = [ 0, 1/10, 1/4, 1/3, 1/2, 3/4, 1 ];
    for (var p = 0; p < ps.length; ++p)
    {
            g.addColorStop(ps[p], '#0f0');
            for (var i = 0; i < 15; ++i)
                    g.addColorStop(ps[p], '#f00');
            g.addColorStop(ps[p], '#0f0');
    }
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 30,25 == 0,255,0,255;
    @assert pixel 40,25 == 0,255,0,255;
    @assert pixel 60,25 == 0,255,0,255;
    @assert pixel 80,25 == 0,255,0,255;

- name: 2d.gradient.empty
  testing:
    - 2d.gradient.empty
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createLinearGradient(0, 0, 0, 50);
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.gradient.object.update
  testing:
    - 2d.gradient.update
  code: |
    var g = ctx.createLinearGradient(-100, 0, 200, 0);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    g.addColorStop(0.1, '#0f0');
    g.addColorStop(0.9, '#0f0');
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.gradient.object.compare
  testing:
    - 2d.gradient.object
  code: |
    var g1 = ctx.createLinearGradient(0, 0, 100, 0);
    var g2 = ctx.createLinearGradient(0, 0, 100, 0);
    @assert g1 !== g2;
    ctx.fillStyle = g1;
    @assert ctx.fillStyle === g1;

- name: 2d.gradient.object.crosscanvas
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var g = offscreenCanvas2.getContext('2d').createLinearGradient(0, 0, 100, 0);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.gradient.object.invalidoffset
  testing:
    - 2d.gradient.invalidoffset
  code: |
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    @assert throws INDEX_SIZE_ERR g.addColorStop(-1, '#000');
    @assert throws INDEX_SIZE_ERR g.addColorStop(2, '#000');
    @assert throws TypeError g.addColorStop(Infinity, '#000');
    @assert throws TypeError g.addColorStop(-Infinity, '#000');
    @assert throws TypeError g.addColorStop(NaN, '#000');

- name: 2d.gradient.object.invalidcolour
  testing:
    - 2d.gradient.invalidcolour
  code: |
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    @assert throws SYNTAX_ERR g.addColorStop(0, "");
    @assert throws SYNTAX_ERR g.addColorStop(0, 'null');
    @assert throws SYNTAX_ERR g.addColorStop(0, 'undefined');
    @assert throws SYNTAX_ERR g.addColorStop(0, null);
    @assert throws SYNTAX_ERR g.addColorStop(0, undefined);

- name: 2d.gradient.linear.nonfinite
  desc: createLinearGradient() throws TypeError if arguments are not finite
  testing:
    - 2d.gradient.linear.nonfinite
  code: |
    @nonfinite @assert throws TypeError ctx.createLinearGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);

- name: 2d.gradient.linear.transform.1
  desc: Linear gradient coordinates are relative to the coordinate space at the time of filling
  testing:
    - 2d.gradient.linear.transform
  code: |
    var g = ctx.createLinearGradient(0, 0, 200, 0);
    g.addColorStop(0, '#f00');
    g.addColorStop(0.25, '#0f0');
    g.addColorStop(0.75, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.translate(-50, 0);
    ctx.fillRect(50, 0, 100, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.gradient.linear.transform.2
  desc: Linear gradient coordinates are relative to the coordinate space at the time of filling
  testing:
    - 2d.gradient.linear.transform
  code: |
    ctx.translate(100, 0);
    var g = ctx.createLinearGradient(0, 0, 200, 0);
    g.addColorStop(0, '#f00');
    g.addColorStop(0.25, '#0f0');
    g.addColorStop(0.75, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.translate(-150, 0);
    ctx.fillRect(50, 0, 100, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.gradient.linear.transform.3
  desc: Linear gradient transforms do not experience broken caching effects
  testing:
    - 2d.gradient.linear.transform
  code: |
    var g = ctx.createLinearGradient(0, 0, 200, 0);
    g.addColorStop(0, '#f00');
    g.addColorStop(0.25, '#0f0');
    g.addColorStop(0.75, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(-50, 0);
    ctx.fillRect(50, 0, 100, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.gradient.radial.negative
  desc: createRadialGradient() throws INDEX_SIZE_ERR if either radius is negative
  testing:
    - 2d.gradient.radial.negative
  code: |
    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, 1);
    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, 1, 0, 0, -0.1);
    @assert throws INDEX_SIZE_ERR ctx.createRadialGradient(0, 0, -0.1, 0, 0, -0.1);
- name: 2d.gradient.radial.nonfinite

  desc: createRadialGradient() throws TypeError if arguments are not finite
  testing:
    - 2d.gradient.radial.nonfinite
  code: |
    @nonfinite @assert throws TypeError ctx.createRadialGradient(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>);

- name: 2d.gradient.radial.inside1
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(50, 25, 100, 50, 25, 200);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.inside2
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.inside3
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(50, 25, 200, 50, 25, 100);
    g.addColorStop(0, '#f00');
    g.addColorStop(0.993, '#f00');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.outside1
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(200, 25, 10, 200, 25, 20);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.outside2
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.outside3
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(200, 25, 20, 200, 25, 10);
    g.addColorStop(0, '#0f0');
    g.addColorStop(0.001, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.touch1
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(150, 25, 50, 200, 25, 100);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255; @moz-todo
    @assert pixel 50,1 == 0,255,0,255; @moz-todo
    @assert pixel 98,1 == 0,255,0,255; @moz-todo
    @assert pixel 1,25 == 0,255,0,255; @moz-todo
    @assert pixel 50,25 == 0,255,0,255; @moz-todo
    @assert pixel 98,25 == 0,255,0,255; @moz-todo
    @assert pixel 1,48 == 0,255,0,255; @moz-todo
    @assert pixel 50,48 == 0,255,0,255; @moz-todo
    @assert pixel 98,48 == 0,255,0,255; @moz-todo

- name: 2d.gradient.radial.touch2
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(-80, 25, 70, 0, 25, 150);
    g.addColorStop(0, '#f00');
    g.addColorStop(0.01, '#0f0');
    g.addColorStop(0.99, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.touch3
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(120, -15, 25, 140, -30, 50);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255; @moz-todo
    @assert pixel 50,1 == 0,255,0,255; @moz-todo
    @assert pixel 98,1 == 0,255,0,255; @moz-todo
    @assert pixel 1,25 == 0,255,0,255; @moz-todo
    @assert pixel 50,25 == 0,255,0,255; @moz-todo
    @assert pixel 98,25 == 0,255,0,255; @moz-todo
    @assert pixel 1,48 == 0,255,0,255; @moz-todo
    @assert pixel 50,48 == 0,255,0,255; @moz-todo
    @assert pixel 98,48 == 0,255,0,255; @moz-todo

- name: 2d.gradient.radial.equal
  testing:
    - 2d.gradient.radial.equal
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(50, 25, 20, 50, 25, 20);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255; @moz-todo
    @assert pixel 50,1 == 0,255,0,255; @moz-todo
    @assert pixel 98,1 == 0,255,0,255; @moz-todo
    @assert pixel 1,25 == 0,255,0,255; @moz-todo
    @assert pixel 50,25 == 0,255,0,255; @moz-todo
    @assert pixel 98,25 == 0,255,0,255; @moz-todo
    @assert pixel 1,48 == 0,255,0,255; @moz-todo
    @assert pixel 50,48 == 0,255,0,255; @moz-todo
    @assert pixel 98,48 == 0,255,0,255; @moz-todo

- name: 2d.gradient.radial.cone.behind
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(120, 25, 10, 211, 25, 100);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255; @moz-todo
    @assert pixel 50,1 == 0,255,0,255; @moz-todo
    @assert pixel 98,1 == 0,255,0,255; @moz-todo
    @assert pixel 1,25 == 0,255,0,255; @moz-todo
    @assert pixel 50,25 == 0,255,0,255; @moz-todo
    @assert pixel 98,25 == 0,255,0,255; @moz-todo
    @assert pixel 1,48 == 0,255,0,255; @moz-todo
    @assert pixel 50,48 == 0,255,0,255; @moz-todo
    @assert pixel 98,48 == 0,255,0,255; @moz-todo

- name: 2d.gradient.radial.cone.front
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(311, 25, 10, 210, 25, 100);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.cone.bottom
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 101);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.cone.top
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(230, 25, 100, 100, 25, 101);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.cone.beside
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(0, 100, 40, 100, 100, 50);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255; @moz-todo
    @assert pixel 50,1 == 0,255,0,255; @moz-todo
    @assert pixel 98,1 == 0,255,0,255; @moz-todo
    @assert pixel 1,25 == 0,255,0,255; @moz-todo
    @assert pixel 50,25 == 0,255,0,255; @moz-todo
    @assert pixel 98,25 == 0,255,0,255; @moz-todo
    @assert pixel 1,48 == 0,255,0,255; @moz-todo
    @assert pixel 50,48 == 0,255,0,255; @moz-todo
    @assert pixel 98,48 == 0,255,0,255; @moz-todo

- name: 2d.gradient.radial.cone.cylinder
  testing:
    - 2d.gradient.radial.rendering
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(210, 25, 100, 230, 25, 100);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.cone.shape1
  testing:
    - 2d.gradient.radial.rendering
  code: |
    var tol = 1; // tolerance to avoid antialiasing artifacts
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(30+tol, 40);
    ctx.lineTo(110, -20+tol);
    ctx.lineTo(110, 100-tol);
    ctx.fill();
    var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#0f0');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.cone.shape2
  testing:
    - 2d.gradient.radial.rendering
  code: |
    var tol = 1; // tolerance to avoid antialiasing artifacts
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var g = ctx.createRadialGradient(30+10*5/2, 40, 10*3/2, 30+10*15/4, 40, 10*9/4);
    g.addColorStop(0, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(30-tol, 40);
    ctx.lineTo(110, -20-tol);
    ctx.lineTo(110, 100+tol);
    ctx.fill();
    @assert pixel 1,1 == 0,255,0,255; @moz-todo
    @assert pixel 50,1 == 0,255,0,255; @moz-todo
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255; @moz-todo
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255; @moz-todo
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.gradient.radial.transform.1
  desc: Radial gradient coordinates are relative to the coordinate space at the time of filling
  testing:
    - 2d.gradient.radial.transform
  code: |
    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
    g.addColorStop(0, '#0f0');
    g.addColorStop(0.5, '#0f0');
    g.addColorStop(0.51, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.translate(50, 25);
    ctx.scale(10, 10);
    ctx.fillRect(-5, -2.5, 10, 5);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.gradient.radial.transform.2
  desc: Radial gradient coordinates are relative to the coordinate space at the time of filling
  testing:
    - 2d.gradient.radial.transform
  code: |
    ctx.translate(100, 0);
    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
    g.addColorStop(0, '#0f0');
    g.addColorStop(0.5, '#0f0');
    g.addColorStop(0.51, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.translate(-50, 25);
    ctx.scale(10, 10);
    ctx.fillRect(-5, -2.5, 10, 5);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.gradient.radial.transform.3
  desc: Radial gradient transforms do not experience broken caching effects
  testing:
    - 2d.gradient.radial.transform
  code: |
    var g = ctx.createRadialGradient(0, 0, 0, 0, 0, 11.2);
    g.addColorStop(0, '#0f0');
    g.addColorStop(0.5, '#0f0');
    g.addColorStop(0.51, '#f00');
    g.addColorStop(1, '#f00');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(50, 25);
    ctx.scale(10, 10);
    ctx.fillRect(-5, -2.5, 10, 5);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.pattern.basic.image
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.basic.canvas
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#0f0';
    ctx2.fillRect(0, 0, 100, 50);
    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
    ctx.fillStyle = pattern;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.pattern.basic.zerocanvas
  testing:
    - 2d.pattern.zerocanvas
  code: |
    offscreenCanvas.width = 0;
    offscreenCanvas.height = 10;
    @assert offscreenCanvas.width === 0;
    @assert offscreenCanvas.height === 10;
    @assert throws INVALID_STATE_ERR ctx.createPattern(offscreenCanvas, 'repeat');
    offscreenCanvas.width = 10;
    offscreenCanvas.height = 0;
    @assert offscreenCanvas.width === 10;
    @assert offscreenCanvas.height === 0;
    @assert throws INVALID_STATE_ERR ctx.createPattern(offscreenCanvas, 'repeat');
    offscreenCanvas.width = 0;
    offscreenCanvas.height = 0;
    @assert offscreenCanvas.width === 0;
    @assert offscreenCanvas.height === 0;
    @assert throws INVALID_STATE_ERR ctx.createPattern(offscreenCanvas, 'repeat');

- name: 2d.pattern.basic.nocontext
  testing:
    - 2d.pattern.painting
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillStyle = pattern;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.pattern.image.undefined
  testing:
    - 2d.pattern.IDL
  code: |
    @assert throws TypeError ctx.createPattern(undefined, 'repeat');

- name: 2d.pattern.image.null
  testing:
    - 2d.pattern.IDL
  code: |
    @assert throws TypeError ctx.createPattern(null, 'repeat');

- name: 2d.pattern.image.string
  testing:
    - 2d.pattern.IDL
  code: |
    @assert throws TypeError ctx.createPattern('../images/red.png', 'repeat');

- name: 2d.pattern.repeat.empty
  testing:
    - 2d.pattern.missing
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green-1x1.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, "");
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 200, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.repeat.null
  testing:
    - 2d.pattern.unrecognised
  code: |
    @assert ctx.createPattern(offscreenCanvas, null) != null;

- name: 2d.pattern.repeat.undefined
  testing:
    - 2d.pattern.unrecognised
  code: |
    @assert throws SYNTAX_ERR ctx.createPattern(offscreenCanvas, undefined);

- name: 2d.pattern.repeat.unrecognised
  testing:
    - 2d.pattern.unrecognised
  code: |
    @assert throws SYNTAX_ERR ctx.createPattern(offscreenCanvas, "invalid");

- name: 2d.pattern.repeat.unrecognisednull
  testing:
    - 2d.pattern.unrecognised
  code: |
    @assert throws SYNTAX_ERR ctx.createPattern(offscreenCanvas, "null");

- name: 2d.pattern.repeat.case
  testing:
    - 2d.pattern.exact
  code: |
    @assert throws SYNTAX_ERR ctx.createPattern(offscreenCanvas, "Repeat");

- name: 2d.pattern.repeat.nullsuffix
  testing:
    - 2d.pattern.exact
  code: |
    @assert throws SYNTAX_ERR ctx.createPattern(offscreenCanvas, "repeat\0");

- name: 2d.pattern.modify.canvas1
  testing:
    - 2d.pattern.modify
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#0f0';
    ctx2.fillRect(0, 0, 100, 50);
    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
    ctx2.fillStyle = '#f00';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = pattern;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.pattern.modify.canvas2
  testing:
    - 2d.pattern.modify
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#0f0';
    ctx2.fillRect(0, 0, 100, 50);
    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
    ctx.fillStyle = pattern;
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx2.fillStyle = '#f00';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = pattern;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.pattern.crosscanvas
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var offscreenCanvas2 = new OffscreenCanvas(100, 50);
        var pattern = offscreenCanvas2.getContext('2d').createPattern(response, 'no-repeat');
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 50,25 == 0,255,0,255;
    });

- name: 2d.pattern.paint.norepeat.basic
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.norepeat.outside
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = pattern;
        ctx.fillRect(0, -50, 100, 50);
        ctx.fillRect(-100, 0, 100, 50);
        ctx.fillRect(0, 50, 100, 50);
        ctx.fillRect(100, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.norepeat.coord1
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(50, 0, 50, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.translate(50, 0);
        ctx.fillRect(-50, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.norepeat.coord2
  testing:
    - 2d.pattern.painting
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 50, 50);
        ctx.fillStyle = '#f00';
        ctx.fillRect(50, 0, 50, 50);
        ctx.fillStyle = pattern;
        ctx.translate(50, 0);
        ctx.fillRect(-50, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.norepeat.coord3
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.translate(50, 25);
        ctx.fillRect(-50, -25, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 50, 25);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeat.basic
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeat.outside
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.translate(50, 25);
        ctx.fillRect(-50, -25, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeat.coord1
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/rgrg-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.translate(-128, -78);
        ctx.fillRect(128, 78, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeat.coord2
  testing:
    - 2d.pattern.painting
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/grgr-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeat.coord3
  testing:
    - 2d.pattern.painting
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/rgrg-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        ctx.translate(-128, -78);
        ctx.fillRect(128, 78, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeatx.basic
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 16);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat-x');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeatx.outside
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat-x');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 100, 16);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeatx.coord1
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat-x');
        ctx.fillStyle = pattern;
        ctx.translate(0, 16);
        ctx.fillRect(0, -16, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 100, 16);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,25 == 0,255,0,255;
        @assert pixel 98,25 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeaty.basic
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 16, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat-y');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeaty.outside
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat-y');
        ctx.fillStyle = pattern;
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 16, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.repeaty.coord1
  testing:
    - 2d.pattern.painting
  images:
    - red-16x16.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red-16x16.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat-y');
        ctx.fillStyle = pattern;
        ctx.translate(48, 0);
        ctx.fillRect(-48, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 16, 50);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 50,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 50,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.orientation.image
  desc: Image patterns do not get flipped when painted
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/rrgg-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'no-repeat');
        ctx.fillStyle = pattern;
        ctx.save();
        ctx.translate(0, -103);
        ctx.fillRect(0, 103, 100, 50);
        ctx.restore();
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 100, 25);
        @assert pixel 1,1 == 0,255,0,255;
        @assert pixel 98,1 == 0,255,0,255;
        @assert pixel 1,48 == 0,255,0,255;
        @assert pixel 98,48 == 0,255,0,255;
    });

- name: 2d.pattern.paint.orientation.canvas
  desc: Canvas patterns do not get flipped when painted
  testing:
    - 2d.pattern.painting
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#f00';
    ctx2.fillRect(0, 0, 100, 25);
    ctx2.fillStyle = '#0f0';
    ctx2.fillRect(0, 25, 100, 25);
    var pattern = ctx.createPattern(offscreenCanvas2, 'no-repeat');
    ctx.fillStyle = pattern;
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 25);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.shadow.attributes.shadowBlur.initial
  testing:
    - 2d.shadow.blur.get
    - 2d.shadow.blur.initial
  code: |
    @assert ctx.shadowBlur === 0;

- name: 2d.shadow.attributes.shadowBlur.valid
  testing:
    - 2d.shadow.blur.get
    - 2d.shadow.blur.set
  code: |
    ctx.shadowBlur = 1;
    @assert ctx.shadowBlur === 1;
    ctx.shadowBlur = 0.5;
    @assert ctx.shadowBlur === 0.5;
    ctx.shadowBlur = 1e6;
    @assert ctx.shadowBlur === 1e6;
    ctx.shadowBlur = 0;
    @assert ctx.shadowBlur === 0;

- name: 2d.shadow.attributes.shadowBlur.invalid
  testing:
    - 2d.shadow.blur.invalid
  code: |
    ctx.shadowBlur = 1;
    ctx.shadowBlur = -2;
    @assert ctx.shadowBlur === 1;
    ctx.shadowBlur = 1;
    ctx.shadowBlur = Infinity;
    @assert ctx.shadowBlur === 1;
    ctx.shadowBlur = 1;
    ctx.shadowBlur = -Infinity;
    @assert ctx.shadowBlur === 1;
    ctx.shadowBlur = 1;
    ctx.shadowBlur = NaN;
    @assert ctx.shadowBlur === 1;

- name: 2d.shadow.attributes.shadowOffset.initial
  testing:
    - 2d.shadow.offset.initial
  code: |
    @assert ctx.shadowOffsetX === 0;
    @assert ctx.shadowOffsetY === 0;

- name: 2d.shadow.attributes.shadowOffset.valid
  testing:
    - 2d.shadow.offset.get
    - 2d.shadow.offset.set
  code: |
    ctx.shadowOffsetX = 1;
    ctx.shadowOffsetY = 2;
    @assert ctx.shadowOffsetX === 1;
    @assert ctx.shadowOffsetY === 2;
    ctx.shadowOffsetX = 0.5;
    ctx.shadowOffsetY = 0.25;
    @assert ctx.shadowOffsetX === 0.5;
    @assert ctx.shadowOffsetY === 0.25;
    ctx.shadowOffsetX = -0.5;
    ctx.shadowOffsetY = -0.25;
    @assert ctx.shadowOffsetX === -0.5;
    @assert ctx.shadowOffsetY === -0.25;
    ctx.shadowOffsetX = 0;
    ctx.shadowOffsetY = 0;
    @assert ctx.shadowOffsetX === 0;
    @assert ctx.shadowOffsetY === 0;
    ctx.shadowOffsetX = 1e6;
    ctx.shadowOffsetY = 1e6;
    @assert ctx.shadowOffsetX === 1e6;
    @assert ctx.shadowOffsetY === 1e6;

- name: 2d.shadow.attributes.shadowOffset.invalid
  testing:
    - 2d.shadow.offset.invalid
  code: |
    ctx.shadowOffsetX = 1;
    ctx.shadowOffsetY = 2;
    ctx.shadowOffsetX = Infinity;
    ctx.shadowOffsetY = Infinity;
    @assert ctx.shadowOffsetX === 1;
    @assert ctx.shadowOffsetY === 2;
    ctx.shadowOffsetX = 1;
    ctx.shadowOffsetY = 2;
    ctx.shadowOffsetX = -Infinity;
    ctx.shadowOffsetY = -Infinity;
    @assert ctx.shadowOffsetX === 1;
    @assert ctx.shadowOffsetY === 2;
    ctx.shadowOffsetX = 1;
    ctx.shadowOffsetY = 2;
    ctx.shadowOffsetX = NaN;
    ctx.shadowOffsetY = NaN;
    @assert ctx.shadowOffsetX === 1;
    @assert ctx.shadowOffsetY === 2;

- name: 2d.shadow.attributes.shadowColor.initial
  testing:
    - 2d.shadow.color.initial
  code: |
    @assert ctx.shadowColor === 'rgba(0, 0, 0, 0)';

- name: 2d.shadow.attributes.shadowColor.valid
  testing:
    - 2d.shadow.color.get
    - 2d.shadow.color.set
  code: |
    ctx.shadowColor = 'lime';
    @assert ctx.shadowColor === '#00ff00';
    ctx.shadowColor = 'RGBA(0,255, 0,0)';
    @assert ctx.shadowColor === 'rgba(0, 255, 0, 0)';

- name: 2d.shadow.attributes.shadowColor.invalid
  testing:
    - 2d.shadow.color.invalid
  code: |
    ctx.shadowColor = '#00ff00';
    ctx.shadowColor = 'bogus';
    @assert ctx.shadowColor === '#00ff00';
    ctx.shadowColor = '#00ff00';
    ctx.shadowColor = 'red bogus';
    @assert ctx.shadowColor === '#00ff00';
    ctx.shadowColor = '#00ff00';
    ctx.shadowColor = ctx;
    @assert ctx.shadowColor === '#00ff00';
    ctx.shadowColor = '#00ff00';
    ctx.shadowColor = undefined;
    @assert ctx.shadowColor === '#00ff00';

- name: 2d.shadow.enable.off.1
  desc: Shadows are not drawn when only shadowColor is set
  testing:
    - 2d.shadow.enable
    - 2d.shadow.render
  code: |
    ctx.shadowColor = '#f00';
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.enable.off.2
  desc: Shadows are not drawn when only shadowColor is set
  testing:
    - 2d.shadow.enable
    - 2d.shadow.render
  code: |
    ctx.globalCompositeOperation = 'destination-atop';
    ctx.shadowColor = '#f00';
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.enable.blur
  desc: Shadows are drawn if shadowBlur is set
  testing:
    - 2d.shadow.enable
    - 2d.shadow.render
  code: |
    ctx.globalCompositeOperation = 'destination-atop';
    ctx.shadowColor = '#0f0';
    ctx.shadowBlur = 0.1;
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.enable.x
  desc: Shadows are drawn if shadowOffsetX is set
  testing:
    - 2d.shadow.enable
    - 2d.shadow.render
  code: |
    ctx.globalCompositeOperation = 'destination-atop';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetX = 0.1;
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.enable.y
  desc: Shadows are drawn if shadowOffsetY is set
  testing:
    - 2d.shadow.enable
    - 2d.shadow.render
  code: |
    ctx.globalCompositeOperation = 'destination-atop';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = 0.1;
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.offset.positiveX
  desc: Shadows can be offset with positive x
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetX = 50;
    ctx.fillRect(0, 0, 50, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.shadow.offset.negativeX
  desc: Shadows can be offset with negative x
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetX = -50;
    ctx.fillRect(50, 0, 50, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.shadow.offset.positiveY
  desc: Shadows can be offset with positive y
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = 25;
    ctx.fillRect(0, 0, 100, 25);
    @assert pixel 50,12 == 0,255,0,255;
    @assert pixel 50,37 == 0,255,0,255;

- name: 2d.shadow.offset.negativeY
  desc: Shadows can be offset with negative y
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = -25;
    ctx.fillRect(0, 25, 100, 25);
    @assert pixel 50,12 == 0,255,0,255;
    @assert pixel 50,37 == 0,255,0,255;

- name: 2d.shadow.outside
  desc: Shadows of shapes outside the visible area can be offset onto the visible area
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetX = 100;
    ctx.fillRect(-100, 0, 25, 50);
    ctx.shadowOffsetX = -100;
    ctx.fillRect(175, 0, 25, 50);
    ctx.shadowOffsetX = 0;
    ctx.shadowOffsetY = 100;
    ctx.fillRect(25, -100, 50, 25);
    ctx.shadowOffsetY = -100;
    ctx.fillRect(25, 125, 50, 25);
    @assert pixel 12,25 == 0,255,0,255;
    @assert pixel 87,25 == 0,255,0,255;
    @assert pixel 50,12 == 0,255,0,255;
    @assert pixel 50,37 == 0,255,0,255;

- name: 2d.shadow.clip.1
  desc: Shadows of clipped shapes are still drawn within the clipping region
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(50, 0, 50, 50);
    ctx.save();
    ctx.beginPath();
    ctx.rect(50, 0, 50, 50);
    ctx.clip();
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetX = 50;
    ctx.fillRect(0, 0, 50, 50);
    ctx.restore();
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.shadow.clip.2
  desc: Shadows are not drawn outside the clipping region
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(50, 0, 50, 50);
    ctx.save();
    ctx.beginPath();
    ctx.rect(0, 0, 50, 50);
    ctx.clip();
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetX = 50;
    ctx.fillRect(0, 0, 50, 50);
    ctx.restore();
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.shadow.clip.3
  desc: Shadows of clipped shapes are still drawn within the clipping region
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(50, 0, 50, 50);
    ctx.save();
    ctx.beginPath();
    ctx.rect(0, 0, 50, 50);
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetX = 50;
    ctx.fillRect(-50, 0, 50, 50);
    ctx.restore();
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.shadow.stroke.basic
  desc: Shadows are drawn for strokes
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = 50;
    ctx.beginPath();
    ctx.lineWidth = 50;
    ctx.moveTo(0, -25);
    ctx.lineTo(100, -25);
    ctx.stroke();
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;

- name: 2d.shadow.stroke.cap.1
  desc: Shadows are not drawn for areas outside stroke caps
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetY = 50;
    ctx.beginPath();
    ctx.lineWidth = 50;
    ctx.lineCap = 'butt';
    ctx.moveTo(-50, -25);
    ctx.lineTo(0, -25);
    ctx.moveTo(100, -25);
    ctx.lineTo(150, -25);
    ctx.stroke();
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;

- name: 2d.shadow.stroke.cap.2
  desc: Shadows are drawn for stroke caps
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = 50;
    ctx.beginPath();
    ctx.lineWidth = 50;
    ctx.lineCap = 'square';
    ctx.moveTo(25, -25);
    ctx.lineTo(75, -25);
    ctx.stroke();
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;

- name: 2d.shadow.stroke.join.1
  desc: Shadows are not drawn for areas outside stroke joins
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetX = 100;
    ctx.lineWidth = 200;
    ctx.lineJoin = 'bevel';
    ctx.beginPath();
    ctx.moveTo(-200, -50);
    ctx.lineTo(-150, -50);
    ctx.lineTo(-151, -100);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.shadow.stroke.join.2
  desc: Shadows are drawn for stroke joins
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(50, 0, 50, 50);
    ctx.strokeStyle = '#f00';
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetX = 100;
    ctx.lineWidth = 200;
    ctx.lineJoin = 'miter';
    ctx.beginPath();
    ctx.moveTo(-200, -50);
    ctx.lineTo(-150, -50);
    ctx.lineTo(-151, -100);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.shadow.stroke.join.3
  desc: Shadows are drawn for stroke joins respecting miter limit
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetX = 100;
    ctx.lineWidth = 200;
    ctx.lineJoin = 'miter';
    ctx.miterLimit = 0.1;
    ctx.beginPath();
    ctx.moveTo(-200, -50);
    ctx.lineTo(-150, -50);
    ctx.lineTo(-151, -100); // (not an exact right angle, to avoid some other bug in Firefox 3)
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.shadow.image.basic
  desc: Shadows are drawn for images
  testing:
    - 2d.shadow.render
  images:
    - red.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = 50;
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, -50);
        @assert pixel 50,25 == 0,255,0,255;
    });

- name: 2d.shadow.image.transparent.1
  desc: Shadows are not drawn for transparent images
  testing:
    - 2d.shadow.render
  images:
    - transparent.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetY = 50;
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/transparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, -50);
        @assert pixel 50,25 == 0,255,0,255;
    });

- name: 2d.shadow.image.transparent.2
  desc: Shadows are not drawn for transparent parts of images
  testing:
    - 2d.shadow.render
  images:
    - redtransparent.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(50, 0, 50, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#0f0';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/redtransparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 50, -50);
        ctx.shadowColor = '#f00';
        ctx.drawImage(response, -50, -50);
        @assert pixel 25,25 == 0,255,0,255;
        @assert pixel 50,25 == 0,255,0,255;
        @assert pixel 75,25 == 0,255,0,255;
    });

- name: 2d.shadow.image.alpha
  desc: Shadows are drawn correctly for partially-transparent images
  testing:
    - 2d.shadow.render
  images:
    - transparent50.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#00f';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/transparent50.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, -50);
        @assert pixel 50,25 ==~ 127,0,127,255;
    });

- name: 2d.shadow.image.section
  desc: Shadows are not drawn for areas outside image source rectangles
  testing:
    - 2d.shadow.render
  images:
    - redtransparent.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#f00';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/redtransparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 50, 0, 50, 50, 0, -50, 50, 50);
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 50,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    });

- name: 2d.shadow.image.scale
  desc: Shadows are drawn correctly for scaled images
  testing:
    - 2d.shadow.render
  images:
    - redtransparent.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#0f0';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/redtransparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0, 100, 50, -10, -50, 240, 50);
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 50,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    });

- name: 2d.shadow.canvas.basic
  desc: Shadows are drawn for canvases
  testing:
    - 2d.shadow.render
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#f00';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = 50;
    ctx.drawImage(offscreenCanvas2, 0, -50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.canvas.transparent.1
  desc: Shadows are not drawn for transparent canvases
  testing:
    - 2d.shadow.render
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetY = 50;
    ctx.drawImage(offscreenCanvas2, 0, -50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.canvas.transparent.2
  desc: Shadows are not drawn for transparent parts of canvases
  testing:
    - 2d.shadow.render
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#f00';
    ctx2.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(50, 0, 50, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#0f0';
    ctx.drawImage(offscreenCanvas2, 50, -50);
    ctx.shadowColor = '#f00';
    ctx.drawImage(offscreenCanvas2, -50, -50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.shadow.canvas.alpha
  desc: Shadows are drawn correctly for partially-transparent canvases
  testing:
    - 2d.shadow.render
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = 'rgba(255, 0, 0, 0.5)';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#00f';
    ctx.drawImage(offscreenCanvas2, 0, -50);
    @assert pixel 50,25 ==~ 127,0,127,255;

- name: 2d.shadow.pattern.basic
  desc: Shadows are drawn for fill patterns
  testing:
    - 2d.shadow.render
  images:
    - red.png
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat');
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.shadowColor = '#0f0';
        ctx.shadowOffsetY = 50;
        ctx.fillStyle = pattern;
        ctx.fillRect(0, -50, 100, 50);
    });

- name: 2d.shadow.pattern.transparent.1
  desc: Shadows are not drawn for transparent fill patterns
  testing:
    - 2d.shadow.render
  # http://bugs.webkit.org/show_bug.cgi?id=15266
  images:
    - transparent.png
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/transparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat');
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 100, 50);
        ctx.shadowColor = '#f00';
        ctx.shadowOffsetY = 50;
        ctx.fillStyle = pattern;
        ctx.fillRect(0, -50, 100, 50);
    });

- name: 2d.shadow.pattern.transparent.2
  desc: Shadows are not drawn for transparent parts of fill patterns
  testing:
    - 2d.shadow.render
  images:
    - redtransparent.png
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/redtransparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat');
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 50, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(50, 0, 50, 50);
        ctx.shadowOffsetY = 50;
        ctx.shadowColor = '#0f0';
        ctx.fillStyle = pattern;
        ctx.fillRect(0, -50, 100, 50);
        @assert pixel 25,25 == 0,255,0,255;
        @assert pixel 50,25 == 0,255,0,255;
        @assert pixel 75,25 == 0,255,0,255;
    });

- name: 2d.shadow.pattern.alpha
  desc: Shadows are drawn correctly for partially-transparent fill patterns
  testing:
    - 2d.shadow.render
  images:
    - transparent50.png
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/transparent50.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        var pattern = ctx.createPattern(response, 'repeat');
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.shadowOffsetY = 50;
        ctx.shadowColor = '#00f';
        ctx.fillStyle = pattern;
        ctx.fillRect(0, -50, 100, 50);
    });

- name: 2d.shadow.gradient.basic
  desc: Shadows are drawn for gradient fills
  testing:
    - 2d.shadow.render
  # http://bugs.webkit.org/show_bug.cgi?id=15266
  code: |
    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
    gradient.addColorStop(0, '#f00');
    gradient.addColorStop(1, '#f00');
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#0f0';
    ctx.shadowOffsetY = 50;
    ctx.fillStyle = gradient;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.gradient.transparent.1
  desc: Shadows are not drawn for transparent gradient fills
  testing:
    - 2d.shadow.render
  # http://bugs.webkit.org/show_bug.cgi?id=15266
  code: |
    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
    gradient.addColorStop(0, 'rgba(0,0,0,0)');
    gradient.addColorStop(1, 'rgba(0,0,0,0)');
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetY = 50;
    ctx.fillStyle = gradient;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.gradient.transparent.2
  desc: Shadows are not drawn for transparent parts of gradient fills
  testing:
    - 2d.shadow.render
  code: |
    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
    gradient.addColorStop(0, '#f00');
    gradient.addColorStop(0.499, '#f00');
    gradient.addColorStop(0.5, 'rgba(0,0,0,0)');
    gradient.addColorStop(1, 'rgba(0,0,0,0)');
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(50, 0, 50, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#0f0';
    ctx.fillStyle = gradient;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;

- name: 2d.shadow.gradient.alpha
  desc: Shadows are drawn correctly for partially-transparent gradient fills
  testing:
    - 2d.shadow.render
  code: |
    var gradient = ctx.createLinearGradient(0, 0, 100, 0);
    gradient.addColorStop(0, 'rgba(255,0,0,0.5)');
    gradient.addColorStop(1, 'rgba(255,0,0,0.5)');
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#00f';
    ctx.fillStyle = gradient;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 ==~ 127,0,127,255;

- name: 2d.shadow.transform.1
  desc: Shadows take account of transformations
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#0f0';
    ctx.translate(100, 100);
    ctx.fillRect(-100, -150, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.transform.2
  desc: Shadow offsets are not affected by transformations
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowOffsetY = 50;
    ctx.shadowColor = '#0f0';
    ctx.rotate(Math.PI)
    ctx.fillRect(-100, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.shadow.alpha.1
  desc: Shadow colour alpha components are used
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = 'rgba(255, 0, 0, 0.01)';
    ctx.shadowOffsetY = 50;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 ==~ 0,255,0,255 +/- 4;

- name: 2d.shadow.alpha.2
  desc: Shadow colour alpha components are used
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = 'rgba(0, 0, 255, 0.5)';
    ctx.shadowOffsetY = 50;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 ==~ 127,0,127,255;

- name: 2d.shadow.alpha.3
  desc: Shadows are affected by globalAlpha
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
    ctx.shadowColor = '#00f';
    ctx.shadowOffsetY = 50;
    ctx.globalAlpha = 0.5;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 ==~ 127,0,127,255;

- name: 2d.shadow.alpha.4
  desc: Shadows with alpha components are correctly affected by globalAlpha
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
    ctx.shadowColor = 'rgba(0, 0, 255, 0.707)';
    ctx.shadowOffsetY = 50;
    ctx.globalAlpha = 0.707;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 ==~ 127,0,127,255;

- name: 2d.shadow.alpha.5
  desc: Shadows of shapes with alpha components are drawn correctly
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = 'rgba(64, 0, 0, 0.5)';
    ctx.shadowColor = '#00f';
    ctx.shadowOffsetY = 50;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 ==~ 127,0,127,255;

- name: 2d.shadow.composite.1
  desc: Shadows are drawn using globalCompositeOperation
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = 'xor';
    ctx.shadowColor = '#f00';
    ctx.shadowOffsetX = 100;
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-100, 0, 200, 50);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.shadow.composite.2
  desc: Shadows are drawn using globalCompositeOperation
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = 'xor';
    ctx.shadowColor = '#f00';
    ctx.shadowBlur = 1;
    ctx.fillStyle = '#0f0';
    ctx.fillRect(-10, -10, 120, 70);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.shadow.composite.3
  desc: Areas outside shadows are drawn correctly with destination-out
  testing:
    - 2d.shadow.render
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = 'destination-out';
    ctx.shadowColor = '#f00';
    ctx.shadowBlur = 10;
    ctx.fillStyle = '#f00';
    ctx.fillRect(200, 0, 100, 50);
    @assert pixel 5,5 ==~ 0,255,0,255;
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.clearRect.basic
  desc: clearRect clears to transparent black
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.clearRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.clearRect.path
  desc: clearRect does not affect the current path
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.rect(0, 0, 100, 50);
    ctx.clearRect(0, 0, 16, 16);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.clearRect.zero
  desc: clearRect of zero pixels has no effect
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.clearRect(0, 0, 100, 0);
    ctx.clearRect(0, 0, 0, 50);
    ctx.clearRect(0, 0, 0, 0);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.clearRect.negative
  desc: clearRect of negative sizes works
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.clearRect(0, 0, 50, 25);
    ctx.clearRect(100, 0, -50, 25);
    ctx.clearRect(0, 50, 50, -25);
    ctx.clearRect(100, 50, -50, -25);
    @assert pixel 25,12 == 0,0,0,0;
    @assert pixel 75,12 == 0,0,0,0;
    @assert pixel 25,37 == 0,0,0,0;
    @assert pixel 75,37 == 0,0,0,0;

- name: 2d.clearRect.transform
  desc: clearRect is affected by transforms
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(10, 10);
    ctx.translate(0, 5);
    ctx.clearRect(0, -5, 10, 5);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.clearRect.globalalpha
  desc: clearRect is not affected by globalAlpha
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalAlpha = 0.1;
    ctx.clearRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.clearRect.globalcomposite
  desc: clearRect is not affected by globalCompositeOperation
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = 'destination-atop';
    ctx.clearRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.clearRect.clip
  desc: clearRect is affected by clipping regions
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(0, 0, 16, 16);
    ctx.clip();
    ctx.clearRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 16, 16);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.clearRect.shadow
  desc: clearRect does not draw shadows
  testing:
    - 2d.clearRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#f00';
    ctx.shadowBlur = 0;
    ctx.shadowOffsetX = 0;
    ctx.shadowOffsetY = 50;
    ctx.clearRect(0, -50, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.clearRect.nonfinite
  desc: clearRect() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @nonfinite ctx.clearRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillRect.basic
  desc: fillRect works
  testing:
    - 2d.fillRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillRect.path
  desc: fillRect does not affect the current path
  testing:
    - 2d.fillRect
  code: |
    ctx.beginPath();
    ctx.rect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 16, 16);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillRect.zero
  desc: fillRect of zero pixels has no effect
  testing:
    - 2d.fillRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 0);
    ctx.fillRect(0, 0, 0, 50);
    ctx.fillRect(0, 0, 0, 0);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillRect.negative
  desc: fillRect of negative sizes works
  testing:
    - 2d.fillRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 25);
    ctx.fillRect(100, 0, -50, 25);
    ctx.fillRect(0, 50, 50, -25);
    ctx.fillRect(100, 50, -50, -25);
    @assert pixel 25,12 == 0,255,0,255;
    @assert pixel 75,12 == 0,255,0,255;
    @assert pixel 25,37 == 0,255,0,255;
    @assert pixel 75,37 == 0,255,0,255;

- name: 2d.fillRect.transform
  desc: fillRect is affected by transforms
  testing:
    - 2d.fillRect
  code: |
    ctx.scale(10, 10);
    ctx.translate(0, 5);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, -5, 10, 5);
    @assert pixel 50,25 == 0,255,0,255;

# don't bother testing globalalpha, globalcomposite because they're already heavily used by other test cases

- name: 2d.fillRect.clip
  desc: fillRect is affected by clipping regions
  testing:
    - 2d.fillRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(0, 0, 16, 16);
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 16, 16);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillRect.shadow
  desc: fillRect draws shadows
  testing:
    - 2d.fillRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.shadowColor = '#0f0';
    ctx.shadowBlur = 0;
    ctx.shadowOffsetX = 0;
    ctx.shadowOffsetY = 50;
    ctx.fillRect(0, -50, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.fillRect.nonfinite
  desc: fillRect() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    @nonfinite ctx.fillRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.basic
  desc: strokeRect works
  testing:
    - 2d.strokeRect
  code: |
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.strokeRect(25, 24, 50, 2);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.path
  desc: strokeRect does not affect the current path
  testing:
    - 2d.strokeRect
  code: |
    ctx.beginPath();
    ctx.rect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 5;
    ctx.strokeRect(0, 0, 16, 16);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.zero.1
  desc: strokeRect of 0x0 pixels draws nothing
  testing:
    - 2d.strokeRect
  code: |
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 250;
    ctx.strokeRect(50, 25, 0, 0);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.strokeRect.zero.2
  desc: strokeRect of 0x0 pixels draws nothing, including caps and joins
  testing:
    - 2d.strokeRect
  code: |
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 250;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'round';
    ctx.strokeRect(50, 25, 0, 0);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.strokeRect.zero.3
  desc: strokeRect of Nx0 pixels draws a straight line
  testing:
    - 2d.strokeRect
  code: |
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.strokeRect(0, 25, 100, 0);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.zero.4
  desc: strokeRect of Nx0 pixels draws a closed line with no caps
  testing:
    - 2d.strokeRect
  code: |
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 250;
    ctx.lineCap = 'round';
    ctx.strokeRect(100, 25, 100, 0);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.strokeRect.zero.5
  desc: strokeRect of Nx0 pixels draws a closed line with joins
  testing:
    - 2d.strokeRect
  code: |
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 250;
    ctx.lineJoin = 'round';
    ctx.strokeRect(100, 25, 100, 0);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.negative
  desc: strokeRect of negative sizes works
  testing:
    - 2d.strokeRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 25;
    ctx.strokeRect(12, 12, 26, 1);
    ctx.strokeRect(88, 12, -26, 1);
    ctx.strokeRect(12, 38, 26, -1);
    ctx.strokeRect(88, 38, -26, -1);
    @assert pixel 25,12 == 0,255,0,255;
    @assert pixel 75,12 == 0,255,0,255;
    @assert pixel 25,37 == 0,255,0,255;
    @assert pixel 75,37 == 0,255,0,255;

- name: 2d.strokeRect.transform
  desc: fillRect is affected by transforms
  testing:
    - 2d.strokeRect
  code: |
    ctx.scale(10, 10);
    ctx.translate(0, 5);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 5;
    ctx.strokeRect(2.5, -2.6, 5, 0.2);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.globalalpha
  desc: strokeRect is affected by globalAlpha
  testing:
    - 2d.strokeRect
  code: |
    ctx.globalAlpha = 0;
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.strokeRect(25, 24, 50, 2);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.strokeRect.globalcomposite
  desc: strokeRect is not affected by globalCompositeOperation
  testing:
    - 2d.strokeRect
  code: |
    ctx.globalCompositeOperation = 'source-in';
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.strokeRect(25, 24, 50, 2);
    @assert pixel 50,25 == 0,0,0,0;

- name: 2d.strokeRect.clip
  desc: strokeRect is affected by clipping regions
  testing:
    - 2d.strokeRect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(0, 0, 16, 16);
    ctx.clip();
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.strokeRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 16, 16);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.shadow
  desc: strokeRect draws shadows
  testing:
    - 2d.strokeRect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.shadowColor = '#0f0';
    ctx.shadowBlur = 0;
    ctx.shadowOffsetX = 0;
    ctx.shadowOffsetY = 50;
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.strokeRect(0, -75, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.strokeRect.nonfinite
  desc: strokeRect() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 150;
    @nonfinite ctx.strokeRect(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
    @assert pixel 50,25 == 0,255,0,255;


- name: 2d.drawImage.3arg
  testing:
    - 2d.drawImage.defaultsource
    - 2d.drawImage.defaultdest
  images:
    - red.png
    - green.png
  code: |
    var promise1 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    var promise2 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    Promise.all([promise1, promise2]).then(function(response1, response2) {
        ctx.drawImage(response2, 0, 0);
        ctx.drawImage(response1, -100, 0);
        ctx.drawImage(response1, 100, 0);
        ctx.drawImage(response1, 0, -50);
        ctx.drawImage(response1, 0, 50);
        @assert pixel 0,0 ==~ 0,255,0,255;
        @assert pixel 99,0 ==~ 0,255,0,255;
        @assert pixel 0,49 ==~ 0,255,0,255;
        @assert pixel 99,49 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.5arg
  testing:
    - 2d.drawImage.defaultsource
  images:
    - red.png
    - green.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise1 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    var promise2 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    Promise.all([promise1, promise2]).then(function(response1, response2) {
        ctx.drawImage(response2, 50, 0, 50, 50);
        ctx.drawImage(response1, 0, 0, 50, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 50, 50);
        @assert pixel 0,0 ==~ 0,255,0,255;
        @assert pixel 99,0 ==~ 0,255,0,255;
        @assert pixel 0,49 ==~ 0,255,0,255;
        @assert pixel 99,49 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.9arg.basic
  testing:
    - 2d.drawImage.paint
  images:
    - green.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0, 100, 50, 0, 0, 100, 50);
        @assert pixel 0,0 ==~ 0,255,0,255;
        @assert pixel 99,0 ==~ 0,255,0,255;
        @assert pixel 0,49 ==~ 0,255,0,255;
        @assert pixel 99,49 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.9arg.sourcepos
  testing:
    - 2d.drawImage.paint
  images:
    - rgrg-256x256.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/rgrg-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 140, 20, 100, 50, 0, 0, 100, 50);
        @assert pixel 0,0 ==~ 0,255,0,255;
        @assert pixel 99,0 ==~ 0,255,0,255;
        @assert pixel 0,49 ==~ 0,255,0,255;
        @assert pixel 99,49 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.9arg.sourcesize
  testing:
    - 2d.drawImage.paint
  images:
    - rgrg-256x256.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/rgrg-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0, 256, 256, 0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 51, 26);
        ctx.fillRect(49, 24, 51, 26);
        @assert pixel 0,0 ==~ 0,255,0,255;
        @assert pixel 99,0 ==~ 0,255,0,255;
        @assert pixel 0,49 ==~ 0,255,0,255;
        @assert pixel 99,49 ==~ 0,255,0,255;
        @assert pixel 20,20 ==~ 0,255,0,255;
        @assert pixel 80,20 ==~ 0,255,0,255;
        @assert pixel 20,30 ==~ 0,255,0,255;
        @assert pixel 80,30 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.9arg.destpos
  testing:
    - 2d.drawImage.paint
  images:
    - red.png
    - green.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise1 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    var promise2 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    Promise.all([promise1, promise2]).then(function(response1, response2) {
        ctx.drawImage(response2, 0, 0, 100, 50, 0, 0, 100, 50);
        ctx.drawImage(response1, 0, 0, 100, 50, -100, 0, 100, 50);
        ctx.drawImage(response1, 0, 0, 100, 50, 100, 0, 100, 50);
        ctx.drawImage(response1, 0, 0, 100, 50, 0, -50, 100, 50);
        ctx.drawImage(response1, 0, 0, 100, 50, 0, 50, 100, 50);
        @assert pixel 0,0 ==~ 0,255,0,255;
        @assert pixel 99,0 ==~ 0,255,0,255;
        @assert pixel 0,49 ==~ 0,255,0,255;
        @assert pixel 99,49 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.9arg.destsize
  testing:
    - 2d.drawImage.paint
  images:
    - red.png
    - green.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise1 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    var promise2 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    Promise.all([promise1, promise2]).then(function(response1, response2) {
        ctx.drawImage(response2, 1, 1, 1, 1, 0, 0, 100, 50);
        ctx.drawImage(response1, 0, 0, 100, 50, -50, 0, 50, 50);
        ctx.drawImage(response1, 0, 0, 100, 50, 100, 0, 50, 50);
        ctx.drawImage(response1, 0, 0, 100, 50, 0, -25, 100, 25);
        ctx.drawImage(response1, 0, 0, 100, 50, 0, 50, 100, 25);
        @assert pixel 0,0 ==~ 0,255,0,255;
        @assert pixel 99,0 ==~ 0,255,0,255;
        @assert pixel 0,49 ==~ 0,255,0,255;
        @assert pixel 99,49 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.canvas
  testing:
    - 2d.drawImage.paint
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#0f0';
    ctx2.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.drawImage(offscreenCanvas2, 0, 0);
    @assert pixel 0,0 ==~ 0,255,0,255;
    @assert pixel 99,0 ==~ 0,255,0,255;
    @assert pixel 0,49 ==~ 0,255,0,255;
    @assert pixel 99,49 ==~ 0,255,0,255;

- name: 2d.drawImage.self.1
  testing:
    - 2d.drawImage.self
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(50, 0, 50, 50);
    ctx.drawImage(offscreenCanvas, 50, 0);
    @assert pixel 0,0 ==~ 0,255,0,255;
    @assert pixel 99,0 ==~ 0,255,0,255;
    @assert pixel 0,49 ==~ 0,255,0,255;
    @assert pixel 99,49 ==~ 0,255,0,255;

- name: 2d.drawImage.self.2
  testing:
    - 2d.drawImage.self
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 1, 100, 49);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 1);
    ctx.drawImage(offscreenCanvas, 0, 1);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 2);
    @assert pixel 0,0 ==~ 0,255,0,255;
    @assert pixel 99,0 ==~ 0,255,0,255;
    @assert pixel 0,49 ==~ 0,255,0,255;
    @assert pixel 99,49 ==~ 0,255,0,255;

- name: 2d.drawImage.null
  testing:
    - 2d.drawImage.IDL
  code: |
    @assert throws TypeError ctx.drawImage(null, 0, 0);

- name: 2d.drawImage.zerocanvas
  testing:
    - 2d.drawImage.zerocanvas
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(0, 10);
    @assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);

    offscreenCanvas2.width = 10;
    offscreenCanvas2.height = 0;
    @assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);

    offscreenCanvas2.width = 0;
    offscreenCanvas2.height = 0;
    @assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);

- name: 2d.drawImage.wrongtype
  desc: Incorrect image types in drawImage do not match any defined overloads, so WebIDL throws a TypeError
  testing:
    - 2d.drawImage.IDL
  code: |
    @assert throws TypeError ctx.drawImage(undefined, 0, 0);
    @assert throws TypeError ctx.drawImage(0, 0, 0);
    @assert throws TypeError ctx.drawImage("", 0, 0);

- name: 2d.drawImage.floatsource
  testing:
    - 2d.drawImage.paint
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 10.1, 10.1, 0.1, 0.1, 0, 0, 100, 50);
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.zerosource
  desc: drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR
  testing:
    - 2d.drawImage.zerosource
  images:
    - red.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response, 10, 10, 0, 1, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response, 10, 10, 1, 0, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response, 10, 10, 0, 0, 0, 0, 100, 50);
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.zerosource.image
  desc: drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR
  testing:
    - 2d.drawImage.zerosource
  images:
    - red-zerowidth.svg
    - red-zeroheight.svg
    - red-zerosize.svg
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red-zerowidth.svg');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response, 0, 0, 100, 50);
        @assert pixel 50,25 == 0,255,0,255;
    });

- name: 2d.drawImage.negativesource
  desc: Negative source width/height represents the correct rectangle
  testing:
    - 2d.drawImage.direction
  mozilla: { throws }
  images:
    - ggrr-256x256.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/ggrr-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 100, 78, -100, 50, 0, 0, 50, 50);
        ctx.drawImage(response, 100, 128, -100, -50, 50, 0, 50, 50);
        @assert pixel 1,1 ==~ 0,255,0,255;
        @assert pixel 1,48 ==~ 0,255,0,255;
        @assert pixel 98,1 ==~ 0,255,0,255;
        @assert pixel 98,48 ==~ 0,255,0,255;
        @assert pixel 48,1 ==~ 0,255,0,255;
        @assert pixel 48,48 ==~ 0,255,0,255;
        @assert pixel 51,1 ==~ 0,255,0,255;
        @assert pixel 51,48 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.negativedest
  desc: Negative destination width/height represents the correct rectangle
  testing:
    - 2d.drawImage.direction
  mozilla: { throws }
  images:
    - ggrr-256x256.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/ggrr-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 100, 78, 50, 50, 0, 50, 50, -50);
        ctx.drawImage(response, 100, 128, 50, -50, 100, 50, -50, -50);
        @assert pixel 1,1 ==~ 0,255,0,255;
        @assert pixel 1,48 ==~ 0,255,0,255;
        @assert pixel 98,1 ==~ 0,255,0,255;
        @assert pixel 98,48 ==~ 0,255,0,255;
        @assert pixel 48,1 ==~ 0,255,0,255;
        @assert pixel 48,48 ==~ 0,255,0,255;
        @assert pixel 51,1 ==~ 0,255,0,255;
        @assert pixel 51,48 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.negativedir
  desc: Negative dimensions do not affect the direction of the image
  testing:
    - 2d.drawImage.direction
  mozilla: { throws }
  images:
    - ggrr-256x256.png
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/ggrr-256x256.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 178, 50, -100, 0, 0, 50, 100);
        ctx.drawImage(response, 0, 78, 50, 100, 50, 100, 50, -100);
        @assert pixel 1,1 ==~ 0,255,0,255;
        @assert pixel 1,48 ==~ 0,255,0,255;
        @assert pixel 98,1 ==~ 0,255,0,255;
        @assert pixel 98,48 ==~ 0,255,0,255;
        @assert pixel 48,1 ==~ 0,255,0,255;
        @assert pixel 48,48 ==~ 0,255,0,255;
        @assert pixel 51,1 ==~ 0,255,0,255;
        @assert pixel 51,48 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.outsidesource
  DISABLED: fix this to match the current spec (transparent black outside source)
  testing:
    - 2d.drawImage.outsidesource
  code: |
    var promise1 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    var promise2 = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    Promise.all([promise1, promise2]).then(function(response1, response2) {
        ctx.drawImage(response2, 10.5, 10.5, 89.5, 39.5, 0, 0, 100, 50);
        ctx.drawImage(response2, 5.5, 5.5, -5.5, -5.5, 0, 0, 100, 50);
        ctx.drawImage(response2, 100, 50, -5, -5, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, -0.001, 0, 100, 50, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, 0, -0.001, 100, 50, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, 0, 0, 100.001, 50, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, 0, 0, 100, 50.001, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, 50, 0, 50.001, 50, 0, 0, 100, 50); @moz-todo
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, 0, 0, -5, 5, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, 0, 0, 5, -5, 0, 0, 100, 50);
        @assert throws INDEX_SIZE_ERR ctx.drawImage(response1, 110, 60, -20, -20, 0, 0, 100, 50);
        @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
    });

- name: 2d.drawImage.broken
  testing:
    - 2d.drawImage.incomplete.image
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/broken.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 100, 50);
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
    });

- name: 2d.drawImage.svg
  desc: drawImage() of an SVG image
  testing:
    - 2d.drawImage.svg
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/green.svg');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.animated.poster
  desc: drawImage() of an APNG draws the poster frame
  testing:
    - 2d.drawImage.animated.image
  images:
    - anim-poster-gr.png
  code: |
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/anim-poster-gr.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
    });

- name: 2d.drawImage.path
  testing:
    - 2d.drawImage.unaffect
  code: |
    ctx.fillStyle = '#0f0';
    ctx.rect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        ctx.fill();
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.transform
  testing:
    - 2d.drawImage.subject
  images:
    - red.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(100, 0);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.alpha
  testing:
    - 2d.drawImage.subject
  images:
    - red.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalAlpha = 0;
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.clip
  testing:
    - 2d.drawImage.subject
  images:
    - red.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rect(-10, -10, 1, 1);
    ctx.clip();
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.composite
  testing:
    - 2d.drawImage.subject
  images:
    - red.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = 'destination-over';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/red.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, 0, 0);
        @assert pixel 50,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.nowrap
  desc: Stretched images do not get pixels wrapping around the edges
  images:
    - redtransparent.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/redtransparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        ctx.drawImage(response, -1950, 0, 2000, 50);
        @assert pixel 45,25 ==~ 0,255,0,255;
        @assert pixel 50,25 ==~ 0,255,0,255;
        @assert pixel 55,25 ==~ 0,255,0,255;
    });

- name: 2d.drawImage.nonfinite
  desc: drawImage() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  images:
    - red.png
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/redtransparent.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        @nonfinite ctx.drawImage(<response>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
        @nonfinite ctx.drawImage(<response>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
        @nonfinite ctx.drawImage(<response>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
        @assert pixel 50,25 == 0,255,0,255;
    });

- name: 2d.imageData.create2.basic
  desc: createImageData(sw, sh) exists and returns something
  testing:
    - 2d.imageData.create2.object
  code: |
    @assert ctx.createImageData(1, 1) !== null;

- name: 2d.imageData.create1.basic
  desc: createImageData(imgdata) exists and returns something
  testing:
    - 2d.imageData.create1.object
  code: |
    @assert ctx.createImageData(ctx.createImageData(1, 1)) !== null;

- name: 2d.imageData.create2.initial
  desc: createImageData(sw, sh) returns transparent black data of the right size
  testing:
    - 2d.imageData.create2.size
    - 2d.imageData.create.initial
    - 2d.imageData.initial
  code: |
    var imgdata = ctx.createImageData(10, 20);
    @assert imgdata.data.length === imgdata.width*imgdata.height*4;
    @assert imgdata.width < imgdata.height;
    @assert imgdata.width > 0;
    var isTransparentBlack = true;
    for (var i = 0; i < imgdata.data.length; ++i)
        if (imgdata.data[i] !== 0)
            isTransparentBlack = false;
    @assert isTransparentBlack;

- name: 2d.imageData.create1.initial
  desc: createImageData(imgdata) returns transparent black data of the right size
  testing:
    - 2d.imageData.create1.size
    - 2d.imageData.create.initial
    - 2d.imageData.initial
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var imgdata1 = ctx.getImageData(0, 0, 10, 20);
    var imgdata2 = ctx.createImageData(imgdata1);
    @assert imgdata2.data.length === imgdata1.data.length;
    @assert imgdata2.width === imgdata1.width;
    @assert imgdata2.height === imgdata1.height;
    var isTransparentBlack = true;
    for (var i = 0; i < imgdata2.data.length; ++i)
        if (imgdata2.data[i] !== 0)
            isTransparentBlack = false;
    @assert isTransparentBlack;

- name: 2d.imageData.create2.large
  desc: createImageData(sw, sh) works for sizes much larger than the canvas
  testing:
    - 2d.imageData.create2.size
  code: |
    var imgdata = ctx.createImageData(1000, 2000);
    @assert imgdata.data.length === imgdata.width*imgdata.height*4;
    @assert imgdata.width < imgdata.height;
    @assert imgdata.width > 0;
    var isTransparentBlack = true;
    for (var i = 0; i < imgdata.data.length; i += 7813) // check ~1024 points (assuming normal scaling)
        if (imgdata.data[i] !== 0)
            isTransparentBlack = false;
    @assert isTransparentBlack;

- name: 2d.imageData.create2.negative
  desc: createImageData(sw, sh) takes the absolute magnitude of the size arguments
  testing:
    - 2d.imageData.create2.size
  code: |
    var imgdata1 = ctx.createImageData(10, 20);
    var imgdata2 = ctx.createImageData(-10, 20);
    var imgdata3 = ctx.createImageData(10, -20);
    var imgdata4 = ctx.createImageData(-10, -20);
    @assert imgdata1.data.length === imgdata2.data.length;
    @assert imgdata2.data.length === imgdata3.data.length;
    @assert imgdata3.data.length === imgdata4.data.length;

- name: 2d.imageData.create2.zero
  desc: createImageData(sw, sh) throws INDEX_SIZE_ERR if size is zero
  testing:
    - 2d.imageData.getcreate.zero
  code: |
    @assert throws INDEX_SIZE_ERR ctx.createImageData(10, 0);
    @assert throws INDEX_SIZE_ERR ctx.createImageData(0, 10);
    @assert throws INDEX_SIZE_ERR ctx.createImageData(0, 0);

- name: 2d.imageData.create2.nonfinite
  desc: createImageData() throws TypeError if arguments are not finite
  testing:
    - 2d.imageData.getcreate.nonfinite
  code: |
    @nonfinite @assert throws TypeError ctx.createImageData(<10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);
    var posinfobj = { valueOf: function() { return Infinity; } },
        neginfobj = { valueOf: function() { return -Infinity; } },
        nanobj = { valueOf: function() { return -Infinity; } };
    @nonfinite @assert throws TypeError ctx.createImageData(<10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>);

- name: 2d.imageData.create1.zero
  desc: createImageData(null) throws TypeError
  testing:
    - 2d.imageData.create.null
  code: |
    @assert throws TypeError ctx.createImageData(null);

- name: 2d.imageData.create2.round
  desc: createImageData(w, h) is rounded the same as getImageData(0, 0, w, h)
  testing:
    - 2d.imageData.createround
  code: |
    var imgdata1 = ctx.createImageData(10.01, 10.99);
    var imgdata2 = ctx.getImageData(0, 0, 10.01, 10.99);
    @assert imgdata1.width === imgdata2.width;
    @assert imgdata1.height === imgdata2.height;

- name: 2d.imageData.get.basic
  desc: getImageData() exists and returns something
  testing:
    - 2d.imageData.get.basic
  code: |
    @assert ctx.getImageData(0, 0, 100, 50) !== null;

- name: 2d.imageData.get.zero
  desc: getImageData() throws INDEX_SIZE_ERR if size is zero
  testing:
    - 2d.imageData.getcreate.zero
  code: |
    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 10, 0);
    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 0, 10);
    @assert throws INDEX_SIZE_ERR ctx.getImageData(1, 1, 0, 0);

- name: 2d.imageData.get.nonfinite
  desc: getImageData() throws TypeError if arguments are not finite
  testing:
    - 2d.imageData.getcreate.nonfinite
  code: |
    @nonfinite @assert throws TypeError ctx.getImageData(<10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);
    var posinfobj = { valueOf: function() { return Infinity; } },
        neginfobj = { valueOf: function() { return -Infinity; } },
        nanobj = { valueOf: function() { return -Infinity; } };
    @nonfinite @assert throws TypeError ctx.getImageData(<10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>, <10 posinfobj neginfobj nanobj>);

- name: 2d.imageData.get.source.outside
  desc: getImageData() returns transparent black outside the canvas
  testing:
    - 2d.imageData.get.basic
    - 2d.imageData.get.outside
  code: |
    ctx.fillStyle = '#08f';
    ctx.fillRect(0, 0, 100, 50);
    var imgdata1 = ctx.getImageData(-10, 5, 1, 1);
    @assert imgdata1.data[0] === 0;
    @assert imgdata1.data[1] === 0;
    @assert imgdata1.data[2] === 0;
    @assert imgdata1.data[3] === 0;
    var imgdata2 = ctx.getImageData(10, -5, 1, 1);
    @assert imgdata2.data[0] === 0;
    @assert imgdata2.data[1] === 0;
    @assert imgdata2.data[2] === 0;
    @assert imgdata2.data[3] === 0;
    var imgdata3 = ctx.getImageData(200, 5, 1, 1);
    @assert imgdata3.data[0] === 0;
    @assert imgdata3.data[1] === 0;
    @assert imgdata3.data[2] === 0;
    @assert imgdata3.data[3] === 0;
    var imgdata4 = ctx.getImageData(10, 60, 1, 1);
    @assert imgdata4.data[0] === 0;
    @assert imgdata4.data[1] === 0;
    @assert imgdata4.data[2] === 0;
    @assert imgdata4.data[3] === 0;
    var imgdata5 = ctx.getImageData(100, 10, 1, 1);
    @assert imgdata5.data[0] === 0;
    @assert imgdata5.data[1] === 0;
    @assert imgdata5.data[2] === 0;
    @assert imgdata5.data[3] === 0;
    var imgdata6 = ctx.getImageData(0, 10, 1, 1);
    @assert imgdata6.data[0] === 0;
    @assert imgdata6.data[1] === 136;
    @assert imgdata6.data[2] === 255;
    @assert imgdata6.data[3] === 255;
    var imgdata7 = ctx.getImageData(-10, 10, 20, 20);
    @assert imgdata7.data[ 0*4+0] === 0;
    @assert imgdata7.data[ 0*4+1] === 0;
    @assert imgdata7.data[ 0*4+2] === 0;
    @assert imgdata7.data[ 0*4+3] === 0;
    @assert imgdata7.data[ 9*4+0] === 0;
    @assert imgdata7.data[ 9*4+1] === 0;
    @assert imgdata7.data[ 9*4+2] === 0;
    @assert imgdata7.data[ 9*4+3] === 0;
    @assert imgdata7.data[10*4+0] === 0;
    @assert imgdata7.data[10*4+1] === 136;
    @assert imgdata7.data[10*4+2] === 255;
    @assert imgdata7.data[10*4+3] === 255;
    @assert imgdata7.data[19*4+0] === 0;
    @assert imgdata7.data[19*4+1] === 136;
    @assert imgdata7.data[19*4+2] === 255;
    @assert imgdata7.data[19*4+3] === 255;
    @assert imgdata7.data[20*4+0] === 0;
    @assert imgdata7.data[20*4+1] === 0;
    @assert imgdata7.data[20*4+2] === 0;
    @assert imgdata7.data[20*4+3] === 0;

- name: 2d.imageData.get.source.negative
  desc: getImageData() works with negative width and height, and returns top-to-bottom left-to-right
  testing:
    - 2d.imageData.get.basic
    - 2d.pixelarray.order
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#fff';
    ctx.fillRect(20, 10, 60, 10);
    var imgdata1 = ctx.getImageData(85, 25, -10, -10);
    @assert imgdata1.data[0] === 255;
    @assert imgdata1.data[1] === 255;
    @assert imgdata1.data[2] === 255;
    @assert imgdata1.data[3] === 255;
    @assert imgdata1.data[imgdata1.data.length-4+0] === 0;
    @assert imgdata1.data[imgdata1.data.length-4+1] === 0;
    @assert imgdata1.data[imgdata1.data.length-4+2] === 0;
    @assert imgdata1.data[imgdata1.data.length-4+3] === 255;
    var imgdata2 = ctx.getImageData(0, 0, -1, -1);
    @assert imgdata2.data[0] === 0;
    @assert imgdata2.data[1] === 0;
    @assert imgdata2.data[2] === 0;
    @assert imgdata2.data[3] === 0;

- name: 2d.imageData.get.source.size
  desc: getImageData() returns bigger ImageData for bigger source rectangle
  testing:
    - 2d.imageData.get.basic
  code: |
    var imgdata1 = ctx.getImageData(0, 0, 10, 10);
    var imgdata2 = ctx.getImageData(0, 0, 20, 20);
    @assert imgdata2.width > imgdata1.width;
    @assert imgdata2.height > imgdata1.height;

- name: 2d.imageData.get.tiny
  desc: getImageData() works for sizes smaller than one pixel
  testing:
    - 2d.imageData.one
  code: |
    var imgdata = ctx.getImageData(0, 0, 0.0001, 0.0001);
    @assert imgdata.data.length === imgdata.width*imgdata.height*4;
    @assert imgdata.width === 1;
    @assert imgdata.height === 1;

- name: 2d.imageData.get.nonpremul
  desc: getImageData() returns non-premultiplied colours
  testing:
    - 2d.imageData.get.premul
  code: |
    ctx.fillStyle = 'rgba(255, 255, 255, 0.5)';
    ctx.fillRect(0, 0, 100, 50);
    var imgdata = ctx.getImageData(10, 10, 10, 10);
    @assert imgdata.data[0] > 200;
    @assert imgdata.data[1] > 200;
    @assert imgdata.data[2] > 200;
    @assert imgdata.data[3] > 100;
    @assert imgdata.data[3] < 200;

- name: 2d.imageData.get.range
  desc: getImageData() returns values in the range [0, 255]
  testing:
    - 2d.pixelarray.range
    - 2d.pixelarray.retrieve
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#fff';
    ctx.fillRect(20, 10, 60, 10);
    var imgdata1 = ctx.getImageData(10, 5, 1, 1);
    @assert imgdata1.data[0] === 0;
    var imgdata2 = ctx.getImageData(30, 15, 1, 1);
    @assert imgdata2.data[0] === 255;

- name: 2d.imageData.get.clamp
  desc: getImageData() clamps colours to the range [0, 255]
  testing:
    - 2d.pixelarray.range
  code: |
    ctx.fillStyle = 'rgb(-100, -200, -300)';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = 'rgb(256, 300, 400)';
    ctx.fillRect(20, 10, 60, 10);
    var imgdata1 = ctx.getImageData(10, 5, 1, 1);
    @assert imgdata1.data[0] === 0;
    @assert imgdata1.data[1] === 0;
    @assert imgdata1.data[2] === 0;
    var imgdata2 = ctx.getImageData(30, 15, 1, 1);
    @assert imgdata2.data[0] === 255;
    @assert imgdata2.data[1] === 255;
    @assert imgdata2.data[2] === 255;

- name: 2d.imageData.get.length
  desc: getImageData() returns a correctly-sized Uint8ClampedArray
  testing:
    - 2d.pixelarray.length
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    @assert imgdata.data.length === imgdata.width*imgdata.height*4;

- name: 2d.imageData.get.order.cols
  desc: getImageData() returns leftmost columns first
  testing:
    - 2d.pixelarray.order
  code: |
    ctx.fillStyle = '#fff';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 2, 50);
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    @assert imgdata.data[0] === 0;
    @assert imgdata.data[Math.round(imgdata.width/2*4)] === 255;
    @assert imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)] === 0;

- name: 2d.imageData.get.order.rows
  desc: getImageData() returns topmost rows first
  testing:
    - 2d.pixelarray.order
  code: |
    ctx.fillStyle = '#fff';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 2);
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    @assert imgdata.data[0] === 0;
    @assert imgdata.data[Math.floor(imgdata.width/2*4)] === 0;
    @assert imgdata.data[(imgdata.height/2)*imgdata.width*4] === 255;

- name: 2d.imageData.get.order.rgb
  desc: getImageData() returns R then G then B
  testing:
    - 2d.pixelarray.order
    - 2d.pixelarray.indexes
  code: |
    ctx.fillStyle = '#48c';
    ctx.fillRect(0, 0, 100, 50);
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    @assert imgdata.data[0] === 0x44;
    @assert imgdata.data[1] === 0x88;
    @assert imgdata.data[2] === 0xCC;
    @assert imgdata.data[3] === 255;
    @assert imgdata.data[4] === 0x44;
    @assert imgdata.data[5] === 0x88;
    @assert imgdata.data[6] === 0xCC;
    @assert imgdata.data[7] === 255;

- name: 2d.imageData.get.order.alpha
  desc: getImageData() returns A in the fourth component
  testing:
    - 2d.pixelarray.order
  code: |
    ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
    ctx.fillRect(0, 0, 100, 50);
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    @assert imgdata.data[3] < 200;
    @assert imgdata.data[3] > 100;

- name: 2d.imageData.get.unaffected
  desc: getImageData() is not affected by context state
  testing:
    - 2d.imageData.unaffected
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 50, 50)
    ctx.fillStyle = '#f00';
    ctx.fillRect(50, 0, 50, 50)
    ctx.save();
    ctx.translate(50, 0);
    ctx.globalAlpha = 0.1;
    ctx.globalCompositeOperation = 'destination-atop';
    ctx.shadowColor = '#f00';
    ctx.rect(0, 0, 5, 5);
    ctx.clip();
    var imgdata = ctx.getImageData(0, 0, 50, 50);
    ctx.restore();
    ctx.putImageData(imgdata, 50, 0);
    @assert pixel 25,25 ==~ 0,255,0,255;
    @assert pixel 75,25 ==~ 0,255,0,255;


- name: 2d.imageData.object.properties
  desc: ImageData objects have the right properties
  testing:
    - 2d.imageData.type
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    @assert typeof(imgdata.width) === 'number';
    @assert typeof(imgdata.height) === 'number';
    @assert typeof(imgdata.data) === 'object';

- name: 2d.imageData.object.readonly
  desc: ImageData objects properties are read-only
  testing:
    - 2d.imageData.type
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    var w = imgdata.width;
    var h = imgdata.height;
    var d = imgdata.data;
    imgdata.width = 123;
    imgdata.height = 123;
    imgdata.data = [100,100,100,100];
    @assert imgdata.width === w;
    @assert imgdata.height === h;
    @assert imgdata.data === d;
    @assert imgdata.data[0] === 0;
    @assert imgdata.data[1] === 0;
    @assert imgdata.data[2] === 0;
    @assert imgdata.data[3] === 0;

- name: 2d.imageData.object.set
  desc: ImageData.data can be modified
  testing:
    - 2d.pixelarray.modify
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    imgdata.data[0] = 100;
    @assert imgdata.data[0] === 100;
    imgdata.data[0] = 200;
    @assert imgdata.data[0] === 200;

- name: 2d.imageData.object.undefined
  desc: ImageData.data converts undefined to 0
  testing:
    - 2d.pixelarray.modify
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    imgdata.data[0] = 100;
    imgdata.data[0] = undefined;
    @assert imgdata.data[0] === 0;

- name: 2d.imageData.object.nan
  desc: ImageData.data converts NaN to 0
  testing:
    - 2d.pixelarray.modify
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    imgdata.data[0] = 100;
    imgdata.data[0] = NaN;
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = 100;
    imgdata.data[0] = "cheese";
    @assert imgdata.data[0] === 0;

- name: 2d.imageData.object.string
  desc: ImageData.data converts strings to numbers with ToNumber
  testing:
    - 2d.pixelarray.modify
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    imgdata.data[0] = 100;
    imgdata.data[0] = "110";
    @assert imgdata.data[0] === 110;
    imgdata.data[0] = 100;
    imgdata.data[0] = "0x78";
    @assert imgdata.data[0] === 120;
    imgdata.data[0] = 100;
    imgdata.data[0] = " +130e0 ";
    @assert imgdata.data[0] === 130;

- name: 2d.imageData.object.clamp
  desc: ImageData.data clamps numbers to [0, 255]
  testing:
    - 2d.pixelarray.modify
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    imgdata.data[0] = 100;
    imgdata.data[0] = 300;
    @assert imgdata.data[0] === 255;
    imgdata.data[0] = 100;
    imgdata.data[0] = -100;
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = 100;
    imgdata.data[0] = 200+Math.pow(2, 32);
    @assert imgdata.data[0] === 255;
    imgdata.data[0] = 100;
    imgdata.data[0] = -200-Math.pow(2, 32);
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = 100;
    imgdata.data[0] = Math.pow(10, 39);
    @assert imgdata.data[0] === 255;
    imgdata.data[0] = 100;
    imgdata.data[0] = -Math.pow(10, 39);
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = 100;
    imgdata.data[0] = -Infinity;
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = 100;
    imgdata.data[0] = Infinity;
    @assert imgdata.data[0] === 255;

- name: 2d.imageData.object.round
  desc: ImageData.data rounds numbers with round-to-zero
  testing:
    - 2d.pixelarray.modify
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    imgdata.data[0] = 0.499;
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = 0.5;
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = 0.501;
    @assert imgdata.data[0] === 1;
    imgdata.data[0] = 1.499;
    @assert imgdata.data[0] === 1;
    imgdata.data[0] = 1.5;
    @assert imgdata.data[0] === 2;
    imgdata.data[0] = 1.501;
    @assert imgdata.data[0] === 2;
    imgdata.data[0] = 2.5;
    @assert imgdata.data[0] === 2;
    imgdata.data[0] = 3.5;
    @assert imgdata.data[0] === 4;
    imgdata.data[0] = 252.5;
    @assert imgdata.data[0] === 252;
    imgdata.data[0] = 253.5;
    @assert imgdata.data[0] === 254;
    imgdata.data[0] = 254.5;
    @assert imgdata.data[0] === 254;
    imgdata.data[0] = 256.5;
    @assert imgdata.data[0] === 255;
    imgdata.data[0] = -0.5;
    @assert imgdata.data[0] === 0;
    imgdata.data[0] = -1.5;
    @assert imgdata.data[0] === 0;

- name: 2d.imageData.put.null
  desc: putImageData() with null imagedata throws TypeError
  testing:
    - 2d.imageData.put.wrongtype
  code: |
    @assert throws TypeError ctx.putImageData(null, 0, 0);

- name: 2d.imageData.put.nonfinite
  desc: putImageData() throws TypeError if arguments are not finite
  testing:
    - 2d.imageData.put.nonfinite
  code: |
    var imgdata = ctx.getImageData(0, 0, 10, 10);
    @nonfinite @assert throws TypeError ctx.putImageData(<imgdata>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);
    @nonfinite @assert throws TypeError ctx.putImageData(<imgdata>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>, <10 Infinity -Infinity NaN>);

- name: 2d.imageData.put.basic
  desc: putImageData() puts image data from getImageData() onto the canvas
  testing:
    - 2d.imageData.put.normal
    - 2d.imageData.put.3arg
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.putImageData(imgdata, 0, 0);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.imageData.put.created
  desc: putImageData() puts image data from createImageData() onto the canvas
  testing:
    - 2d.imageData.put.normal
  code: |
    var imgdata = ctx.createImageData(100, 50);
    for (var i = 0; i < imgdata.data.length; i += 4) {
        imgdata.data[i] = 0;
        imgdata.data[i+1] = 255;
        imgdata.data[i+2] = 0;
        imgdata.data[i+3] = 255;
    }
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.putImageData(imgdata, 0, 0);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.imageData.put.wrongtype
  desc: putImageData() does not accept non-ImageData objects
  testing:
    - 2d.imageData.put.wrongtype
  code: |
    var imgdata = { width: 1, height: 1, data: [255, 0, 0, 255] };
    @assert throws TypeError ctx.putImageData(imgdata, 0, 0);
    @assert throws TypeError ctx.putImageData("cheese", 0, 0);
    @assert throws TypeError ctx.putImageData(42, 0, 0);

- name: 2d.imageData.put.cross
  desc: putImageData() accepts image data got from a different canvas
  testing:
    - 2d.imageData.put.normal
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var ctx2 = offscreenCanvas2.getContext('2d');
    ctx2.fillStyle = '#0f0';
    ctx2.fillRect(0, 0, 100, 50)
    var imgdata = ctx2.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.putImageData(imgdata, 0, 0);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.imageData.put.alpha
  desc: putImageData() puts non-solid image data correctly
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = 'rgba(0, 255, 0, 0.25)';
    ctx.fillRect(0, 0, 100, 50)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.putImageData(imgdata, 0, 0);
    @assert pixel 50,25 ==~ 0,255,0,64;

- name: 2d.imageData.put.modified
  desc: putImageData() puts modified image data correctly
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    ctx.fillStyle = '#f00';
    ctx.fillRect(45, 20, 10, 10)
    var imgdata = ctx.getImageData(45, 20, 10, 10);
    for (var i = 0, len = imgdata.width*imgdata.height*4; i < len; i += 4)
    {
        imgdata.data[i] = 0;
        imgdata.data[i+1] = 255;
    }
    ctx.putImageData(imgdata, 45, 20);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.imageData.put.dirty.zero
  desc: putImageData() with zero-sized dirty rectangle puts nothing
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    ctx.putImageData(imgdata, 0, 0, 0, 0, 0, 0);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.imageData.put.dirty.rect1
  desc: putImageData() only modifies areas inside the dirty rectangle, using width and height
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 20, 20)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    ctx.fillStyle = '#f00';
    ctx.fillRect(40, 20, 20, 20)
    ctx.putImageData(imgdata, 40, 20, 0, 0, 20, 20);
    @assert pixel 50,25 ==~ 0,255,0,255;
    @assert pixel 35,25 ==~ 0,255,0,255;
    @assert pixel 65,25 ==~ 0,255,0,255;
    @assert pixel 50,15 ==~ 0,255,0,255;
    @assert pixel 50,45 ==~ 0,255,0,255;

- name: 2d.imageData.put.dirty.rect2
  desc: putImageData() only modifies areas inside the dirty rectangle, using x and y
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.fillStyle = '#0f0';
    ctx.fillRect(60, 30, 20, 20)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    ctx.fillStyle = '#f00';
    ctx.fillRect(40, 20, 20, 20)
    ctx.putImageData(imgdata, -20, -10, 60, 30, 20, 20);
    @assert pixel 50,25 ==~ 0,255,0,255;
    @assert pixel 35,25 ==~ 0,255,0,255;
    @assert pixel 65,25 ==~ 0,255,0,255;
    @assert pixel 50,15 ==~ 0,255,0,255;
    @assert pixel 50,45 ==~ 0,255,0,255;

- name: 2d.imageData.put.dirty.negative
  desc: putImageData() handles negative-sized dirty rectangles correctly
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 20, 20)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    ctx.fillStyle = '#f00';
    ctx.fillRect(40, 20, 20, 20)
    ctx.putImageData(imgdata, 40, 20, 20, 20, -20, -20);
    @assert pixel 50,25 ==~ 0,255,0,255;
    @assert pixel 35,25 ==~ 0,255,0,255;
    @assert pixel 65,25 ==~ 0,255,0,255;
    @assert pixel 50,15 ==~ 0,255,0,255;
    @assert pixel 50,45 ==~ 0,255,0,255;

- name: 2d.imageData.put.dirty.outside
  desc: putImageData() handles dirty rectangles outside the canvas correctly
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    ctx.putImageData(imgdata, 100, 20, 20, 20, -20, -20);
    ctx.putImageData(imgdata, 200, 200, 0, 0, 100, 50);
    ctx.putImageData(imgdata, 40, 20, -30, -20, 30, 20);
    ctx.putImageData(imgdata, -30, 20, 0, 0, 30, 20);
    @assert pixel 50,25 ==~ 0,255,0,255;
    @assert pixel 98,15 ==~ 0,255,0,255;
    @assert pixel 98,25 ==~ 0,255,0,255;
    @assert pixel 98,45 ==~ 0,255,0,255;
    @assert pixel 1,5 ==~ 0,255,0,255;
    @assert pixel 1,25 ==~ 0,255,0,255;
    @assert pixel 1,45 ==~ 0,255,0,255;

- name: 2d.imageData.put.unchanged
  desc: putImageData(getImageData(...), ...) has no effect
  testing:
    - 2d.imageData.unchanged
  code: |
    var i = 0;
    for (var y = 0; y < 16; ++y) {
        for (var x = 0; x < 16; ++x, ++i) {
            ctx.fillStyle = 'rgba(' + i + ',' + (Math.floor(i*1.5) % 256) + ',' + (Math.floor(i*23.3) % 256) + ',' + (i/256) + ')';
            ctx.fillRect(x, y, 1, 1);
        }
    }
    var imgdata1 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
    var olddata = [];
    for (var i = 0; i < imgdata1.data.length; ++i)
        olddata[i] = imgdata1.data[i];
    ctx.putImageData(imgdata1, 0.1, 0.2);
    var imgdata2 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
    for (var i = 0; i < imgdata2.data.length; ++i) {
        @assert olddata[i] === imgdata2.data[i];
    }

- name: 2d.imageData.put.unaffected
  desc: putImageData() is not affected by context state
  testing:
    - 2d.imageData.unaffected
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.globalAlpha = 0.1;
    ctx.globalCompositeOperation = 'destination-atop';
    ctx.shadowColor = '#f00';
    ctx.shadowBlur = 1;
    ctx.translate(100, 50);
    ctx.scale(0.1, 0.1);
    ctx.putImageData(imgdata, 0, 0);
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.imageData.put.clip
  desc: putImageData() is not affected by clipping regions
  testing:
    - 2d.imageData.unaffected
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50)
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.beginPath();
    ctx.rect(0, 0, 50, 50);
    ctx.clip();
    ctx.putImageData(imgdata, 0, 0);
    @assert pixel 25,25 ==~ 0,255,0,255;
    @assert pixel 75,25 ==~ 0,255,0,255;

- name: 2d.imageData.put.path
  desc: putImageData() does not affect the current path
  testing:
    - 2d.imageData.put.normal
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50)
    ctx.rect(0, 0, 100, 50);
    var imgdata = ctx.getImageData(0, 0, 100, 50);
    ctx.putImageData(imgdata, 0, 0);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 ==~ 0,255,0,255;

- name: 2d.line.defaults
  testing:
    - 2d.lineWidth.default
    - 2d.lineCap.default
    - 2d.lineJoin.default
    - 2d.miterLimit.default
  code: |
    @assert ctx.lineWidth === 1;
    @assert ctx.lineCap === 'butt';
    @assert ctx.lineJoin === 'miter';
    @assert ctx.miterLimit === 10;

- name: 2d.line.width.basic
  desc: lineWidth determines the width of line strokes
  testing:
    - 2d.lineWidth
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 20;
    // Draw a green line over a red box, to check the line is not too small
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(15, 15, 20, 20);
    ctx.beginPath();
    ctx.moveTo(25, 15);
    ctx.lineTo(25, 35);
    ctx.stroke();
    // Draw a green box over a red line, to check the line is not too large
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(75, 15);
    ctx.lineTo(75, 35);
    ctx.stroke();
    ctx.fillRect(65, 15, 20, 20);
    @assert pixel 14,25 == 0,255,0,255;
    @assert pixel 15,25 == 0,255,0,255;
    @assert pixel 16,25 == 0,255,0,255;
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 34,25 == 0,255,0,255;
    @assert pixel 35,25 == 0,255,0,255;
    @assert pixel 36,25 == 0,255,0,255;
    @assert pixel 64,25 == 0,255,0,255;
    @assert pixel 65,25 == 0,255,0,255;
    @assert pixel 66,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;
    @assert pixel 84,25 == 0,255,0,255;
    @assert pixel 85,25 == 0,255,0,255;
    @assert pixel 86,25 == 0,255,0,255;

- name: 2d.line.width.transformed
  desc: Line stroke widths are affected by scale transformations
  testing:
    - 2d.lineWidth
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 4;
    // Draw a green line over a red box, to check the line is not too small
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(15, 15, 20, 20);
    ctx.save();
     ctx.scale(5, 1);
     ctx.beginPath();
     ctx.moveTo(5, 15);
     ctx.lineTo(5, 35);
     ctx.stroke();
    ctx.restore();
    // Draw a green box over a red line, to check the line is not too large
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.save();
     ctx.scale(-5, 1);
     ctx.beginPath();
     ctx.moveTo(-15, 15);
     ctx.lineTo(-15, 35);
     ctx.stroke();
    ctx.restore();
    ctx.fillRect(65, 15, 20, 20);
    @assert pixel 14,25 == 0,255,0,255;
    @assert pixel 15,25 == 0,255,0,255;
    @assert pixel 16,25 == 0,255,0,255;
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 34,25 == 0,255,0,255;
    @assert pixel 35,25 == 0,255,0,255;
    @assert pixel 36,25 == 0,255,0,255;
    @assert pixel 64,25 == 0,255,0,255;
    @assert pixel 65,25 == 0,255,0,255;
    @assert pixel 66,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;
    @assert pixel 84,25 == 0,255,0,255;
    @assert pixel 85,25 == 0,255,0,255;
    @assert pixel 86,25 == 0,255,0,255;

- name: 2d.line.width.scaledefault
  desc: Default lineWidth strokes are affected by scale transformations
  testing:
    - 2d.lineWidth
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(50, 50);
    ctx.strokeStyle = '#0f0';
    ctx.moveTo(0, 0.5);
    ctx.lineTo(2, 0.5);
    ctx.stroke();
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;
    @assert pixel 50,5 == 0,255,0,255;
    @assert pixel 50,45 == 0,255,0,255;

- name: 2d.line.width.valid
  desc: Setting lineWidth to valid values works
  testing:
    - 2d.lineWidth.set
    - 2d.lineWidth.get
  code: |
    ctx.lineWidth = 1.5;
    @assert ctx.lineWidth === 1.5;
    ctx.lineWidth = "1e1";
    @assert ctx.lineWidth === 10;
    ctx.lineWidth = 1/1024;
    @assert ctx.lineWidth === 1/1024;
    ctx.lineWidth = 1000;
    @assert ctx.lineWidth === 1000;

- name: 2d.line.width.invalid
  desc: Setting lineWidth to invalid values is ignored
  testing:
    - 2d.lineWidth.invalid
  code: |
    ctx.lineWidth = 1.5;
    @assert ctx.lineWidth === 1.5;
    ctx.lineWidth = 1.5;
    ctx.lineWidth = 0;
    @assert ctx.lineWidth === 1.5;
    ctx.lineWidth = 1.5;
    ctx.lineWidth = -1;
    @assert ctx.lineWidth === 1.5;
    ctx.lineWidth = 1.5;
    ctx.lineWidth = Infinity;
    @assert ctx.lineWidth === 1.5;
    ctx.lineWidth = 1.5;
    ctx.lineWidth = -Infinity;
    @assert ctx.lineWidth === 1.5;
    ctx.lineWidth = 1.5;
    ctx.lineWidth = NaN;
    @assert ctx.lineWidth === 1.5;

- name: 2d.line.cap.butt
  desc: lineCap 'butt' is rendered correctly
  testing:
    - 2d.lineCap.butt
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineCap = 'butt';
    ctx.lineWidth = 20;
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(15, 15, 20, 20);
    ctx.beginPath();
    ctx.moveTo(25, 15);
    ctx.lineTo(25, 35);
    ctx.stroke();
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(75, 15);
    ctx.lineTo(75, 35);
    ctx.stroke();
    ctx.fillRect(65, 15, 20, 20);
    @assert pixel 25,14 == 0,255,0,255;
    @assert pixel 25,15 == 0,255,0,255;
    @assert pixel 25,16 == 0,255,0,255;
    @assert pixel 25,34 == 0,255,0,255;
    @assert pixel 25,35 == 0,255,0,255;
    @assert pixel 25,36 == 0,255,0,255;
    @assert pixel 75,14 == 0,255,0,255;
    @assert pixel 75,15 == 0,255,0,255;
    @assert pixel 75,16 == 0,255,0,255;
    @assert pixel 75,34 == 0,255,0,255;
    @assert pixel 75,35 == 0,255,0,255;
    @assert pixel 75,36 == 0,255,0,255;

- name: 2d.line.cap.round
  desc: lineCap 'round' is rendered correctly
  testing:
    - 2d.lineCap.round
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var tol = 1; // tolerance to avoid antialiasing artifacts
    ctx.lineCap = 'round';
    ctx.lineWidth = 20;
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(35-tol, 15);
    ctx.arc(25, 15, 10-tol, 0, Math.PI, true);
    ctx.arc(25, 35, 10-tol, Math.PI, 0, true);
    ctx.fill();
    ctx.beginPath();
    ctx.moveTo(25, 15);
    ctx.lineTo(25, 35);
    ctx.stroke();
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(75, 15);
    ctx.lineTo(75, 35);
    ctx.stroke();
    ctx.beginPath();
    ctx.moveTo(85+tol, 15);
    ctx.arc(75, 15, 10+tol, 0, Math.PI, true);
    ctx.arc(75, 35, 10+tol, Math.PI, 0, true);
    ctx.fill();
    @assert pixel 17,6 == 0,255,0,255;
    @assert pixel 25,6 == 0,255,0,255;
    @assert pixel 32,6 == 0,255,0,255;
    @assert pixel 17,43 == 0,255,0,255;
    @assert pixel 25,43 == 0,255,0,255;
    @assert pixel 32,43 == 0,255,0,255;
    @assert pixel 67,6 == 0,255,0,255;
    @assert pixel 75,6 == 0,255,0,255;
    @assert pixel 82,6 == 0,255,0,255;
    @assert pixel 67,43 == 0,255,0,255;
    @assert pixel 75,43 == 0,255,0,255;
    @assert pixel 82,43 == 0,255,0,255;

- name: 2d.line.cap.square
  desc: lineCap 'square' is rendered correctly
  testing:
    - 2d.lineCap.square
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineCap = 'square';
    ctx.lineWidth = 20;
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(15, 5, 20, 40);
    ctx.beginPath();
    ctx.moveTo(25, 15);
    ctx.lineTo(25, 35);
    ctx.stroke();
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(75, 15);
    ctx.lineTo(75, 35);
    ctx.stroke();
    ctx.fillRect(65, 5, 20, 40);
    @assert pixel 25,4 == 0,255,0,255;
    @assert pixel 25,5 == 0,255,0,255;
    @assert pixel 25,6 == 0,255,0,255;
    @assert pixel 25,44 == 0,255,0,255;
    @assert pixel 25,45 == 0,255,0,255;
    @assert pixel 25,46 == 0,255,0,255;
    @assert pixel 75,4 == 0,255,0,255;
    @assert pixel 75,5 == 0,255,0,255;
    @assert pixel 75,6 == 0,255,0,255;
    @assert pixel 75,44 == 0,255,0,255;
    @assert pixel 75,45 == 0,255,0,255;
    @assert pixel 75,46 == 0,255,0,255;

- name: 2d.line.cap.open
  desc: Line caps are drawn at the corners of an unclosed rectangle
  testing:
    - 2d.lineCap.end
  code: |
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineJoin = 'bevel';
    ctx.lineCap = 'square';
    ctx.lineWidth = 400;
    ctx.beginPath();
    ctx.moveTo(200, 200);
    ctx.lineTo(200, 1000);
    ctx.lineTo(1000, 1000);
    ctx.lineTo(1000, 200);
    ctx.lineTo(200, 200);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.cap.closed
  desc: Line caps are not drawn at the corners of an unclosed rectangle
  testing:
    - 2d.lineCap.end
  code: |
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineJoin = 'bevel';
    ctx.lineCap = 'square';
    ctx.lineWidth = 400;
    ctx.beginPath();
    ctx.moveTo(200, 200);
    ctx.lineTo(200, 1000);
    ctx.lineTo(1000, 1000);
    ctx.lineTo(1000, 200);
    ctx.closePath();
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.cap.valid
  desc: Setting lineCap to valid values works
  testing:
    - 2d.lineCap.set
    - 2d.lineCap.get
  code: |
    ctx.lineCap = 'butt'
    @assert ctx.lineCap === 'butt';
    ctx.lineCap = 'round';
    @assert ctx.lineCap === 'round';
    ctx.lineCap = 'square';
    @assert ctx.lineCap === 'square';

- name: 2d.line.cap.invalid
  desc: Setting lineCap to invalid values is ignored
  testing:
    - 2d.lineCap.invalid
  code: |
    ctx.lineCap = 'butt'
    @assert ctx.lineCap === 'butt';
    ctx.lineCap = 'butt';
    ctx.lineCap = 'invalid';
    @assert ctx.lineCap === 'butt';
    ctx.lineCap = 'butt';
    ctx.lineCap = 'ROUND';
    @assert ctx.lineCap === 'butt';
    ctx.lineCap = 'butt';
    ctx.lineCap = 'round\0';
    @assert ctx.lineCap === 'butt';
    ctx.lineCap = 'butt';
    ctx.lineCap = 'round ';
    @assert ctx.lineCap === 'butt';
    ctx.lineCap = 'butt';
    ctx.lineCap = "";
    @assert ctx.lineCap === 'butt';
    ctx.lineCap = 'butt';
    ctx.lineCap = 'bevel';
    @assert ctx.lineCap === 'butt';

- name: 2d.line.join.bevel
  desc: lineJoin 'bevel' is rendered correctly
  testing:
    - 2d.lineJoin.common
    - 2d.lineJoin.bevel
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var tol = 1; // tolerance to avoid antialiasing artifacts
    ctx.lineJoin = 'bevel';
    ctx.lineWidth = 20;
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(10, 10, 20, 20);
    ctx.fillRect(20, 20, 20, 20);
    ctx.beginPath();
    ctx.moveTo(30, 20);
    ctx.lineTo(40-tol, 20);
    ctx.lineTo(30, 10+tol);
    ctx.fill();
    ctx.beginPath();
    ctx.moveTo(10, 20);
    ctx.lineTo(30, 20);
    ctx.lineTo(30, 40);
    ctx.stroke();
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(60, 20);
    ctx.lineTo(80, 20);
    ctx.lineTo(80, 40);
    ctx.stroke();
    ctx.fillRect(60, 10, 20, 20);
    ctx.fillRect(70, 20, 20, 20);
    ctx.beginPath();
    ctx.moveTo(80, 20);
    ctx.lineTo(90+tol, 20);
    ctx.lineTo(80, 10-tol);
    ctx.fill();
    @assert pixel 34,16 == 0,255,0,255;
    @assert pixel 34,15 == 0,255,0,255;
    @assert pixel 35,15 == 0,255,0,255;
    @assert pixel 36,15 == 0,255,0,255;
    @assert pixel 36,14 == 0,255,0,255;
    @assert pixel 84,16 == 0,255,0,255;
    @assert pixel 84,15 == 0,255,0,255;
    @assert pixel 85,15 == 0,255,0,255;
    @assert pixel 86,15 == 0,255,0,255;
    @assert pixel 86,14 == 0,255,0,255;

- name: 2d.line.join.round
  desc: lineJoin 'round' is rendered correctly
  testing:
    - 2d.lineJoin.round
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    var tol = 1; // tolerance to avoid antialiasing artifacts
    ctx.lineJoin = 'round';
    ctx.lineWidth = 20;
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(10, 10, 20, 20);
    ctx.fillRect(20, 20, 20, 20);
    ctx.beginPath();
    ctx.moveTo(30, 20);
    ctx.arc(30, 20, 10-tol, 0, 2*Math.PI, true);
    ctx.fill();
    ctx.beginPath();
    ctx.moveTo(10, 20);
    ctx.lineTo(30, 20);
    ctx.lineTo(30, 40);
    ctx.stroke();
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(60, 20);
    ctx.lineTo(80, 20);
    ctx.lineTo(80, 40);
    ctx.stroke();
    ctx.fillRect(60, 10, 20, 20);
    ctx.fillRect(70, 20, 20, 20);
    ctx.beginPath();
    ctx.moveTo(80, 20);
    ctx.arc(80, 20, 10+tol, 0, 2*Math.PI, true);
    ctx.fill();
    @assert pixel 36,14 == 0,255,0,255;
    @assert pixel 36,13 == 0,255,0,255;
    @assert pixel 37,13 == 0,255,0,255;
    @assert pixel 38,13 == 0,255,0,255;
    @assert pixel 38,12 == 0,255,0,255;
    @assert pixel 86,14 == 0,255,0,255;
    @assert pixel 86,13 == 0,255,0,255;
    @assert pixel 87,13 == 0,255,0,255;
    @assert pixel 88,13 == 0,255,0,255;
    @assert pixel 88,12 == 0,255,0,255;

- name: 2d.line.join.miter
  desc: lineJoin 'miter' is rendered correctly
  testing:
    - 2d.lineJoin.miter
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineJoin = 'miter';
    ctx.lineWidth = 20;
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(10, 10, 30, 20);
    ctx.fillRect(20, 10, 20, 30);
    ctx.beginPath();
    ctx.moveTo(10, 20);
    ctx.lineTo(30, 20);
    ctx.lineTo(30, 40);
    ctx.stroke();
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(60, 20);
    ctx.lineTo(80, 20);
    ctx.lineTo(80, 40);
    ctx.stroke();
    ctx.fillRect(60, 10, 30, 20);
    ctx.fillRect(70, 10, 20, 30);
    @assert pixel 38,12 == 0,255,0,255;
    @assert pixel 39,11 == 0,255,0,255;
    @assert pixel 40,10 == 0,255,0,255;
    @assert pixel 41,9 == 0,255,0,255;
    @assert pixel 42,8 == 0,255,0,255;
    @assert pixel 88,12 == 0,255,0,255;
    @assert pixel 89,11 == 0,255,0,255;
    @assert pixel 90,10 == 0,255,0,255;
    @assert pixel 91,9 == 0,255,0,255;
    @assert pixel 92,8 == 0,255,0,255;

- name: 2d.line.join.open
  desc: Line joins are not drawn at the corner of an unclosed rectangle
  testing:
    - 2d.lineJoin.joins
  code: |
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineJoin = 'miter';
    ctx.lineWidth = 200;
    ctx.beginPath();
    ctx.moveTo(100, 50);
    ctx.lineTo(100, 1000);
    ctx.lineTo(1000, 1000);
    ctx.lineTo(1000, 50);
    ctx.lineTo(100, 50);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.join.closed
  desc: Line joins are drawn at the corner of a closed rectangle
  testing:
    - 2d.lineJoin.joinclosed
  code: |
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineJoin = 'miter';
    ctx.lineWidth = 200;
    ctx.beginPath();
    ctx.moveTo(100, 50);
    ctx.lineTo(100, 1000);
    ctx.lineTo(1000, 1000);
    ctx.lineTo(1000, 50);
    ctx.closePath();
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.join.parallel
  desc: Line joins are drawn at 180-degree joins
  testing:
    - 2d.lineJoin.joins
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 300;
    ctx.lineJoin = 'round';
    ctx.beginPath();
    ctx.moveTo(-100, 25);
    ctx.lineTo(0, 25);
    ctx.lineTo(-100, 25);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.join.valid
  desc: Setting lineJoin to valid values works
  testing:
    - 2d.lineJoin.set
    - 2d.lineJoin.get
  code: |
    ctx.lineJoin = 'bevel'
    @assert ctx.lineJoin === 'bevel';
    ctx.lineJoin = 'round';
    @assert ctx.lineJoin === 'round';
    ctx.lineJoin = 'miter';
    @assert ctx.lineJoin === 'miter';

- name: 2d.line.join.invalid
  desc: Setting lineJoin to invalid values is ignored
  testing:
    - 2d.lineJoin.invalid
  code: |
    ctx.lineJoin = 'bevel'
    @assert ctx.lineJoin === 'bevel';
    ctx.lineJoin = 'bevel';
    ctx.lineJoin = 'invalid';
    @assert ctx.lineJoin === 'bevel';
    ctx.lineJoin = 'bevel';
    ctx.lineJoin = 'ROUND';
    @assert ctx.lineJoin === 'bevel';
    ctx.lineJoin = 'bevel';
    ctx.lineJoin = 'round\0';
    @assert ctx.lineJoin === 'bevel';
    ctx.lineJoin = 'bevel';
    ctx.lineJoin = 'round ';
    @assert ctx.lineJoin === 'bevel';
    ctx.lineJoin = 'bevel';
    ctx.lineJoin = "";
    @assert ctx.lineJoin === 'bevel';
    ctx.lineJoin = 'bevel';
    ctx.lineJoin = 'butt';
    @assert ctx.lineJoin === 'bevel';

- name: 2d.line.miter.exceeded
  desc: Miter joins are not drawn when the miter limit is exceeded
  testing:
    - 2d.lineJoin.miterLimit
    - 2d.lineJoin.miter
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 400;
    ctx.lineJoin = 'miter';
    ctx.strokeStyle = '#f00';
    ctx.miterLimit = 1.414;
    ctx.beginPath();
    ctx.moveTo(200, 1000);
    ctx.lineTo(200, 200);
    ctx.lineTo(1000, 201); // slightly non-right-angle to avoid being a special case
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.miter.acute
  desc: Miter joins are drawn correctly with acute angles
  testing:
    - 2d.lineJoin.miterLimit
    - 2d.lineJoin.miter
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 200;
    ctx.lineJoin = 'miter';
    ctx.strokeStyle = '#0f0';
    ctx.miterLimit = 2.614;
    ctx.beginPath();
    ctx.moveTo(100, 1000);
    ctx.lineTo(100, 100);
    ctx.lineTo(1000, 1000);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.miterLimit = 2.613;
    ctx.beginPath();
    ctx.moveTo(100, 1000);
    ctx.lineTo(100, 100);
    ctx.lineTo(1000, 1000);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.miter.obtuse
  desc: Miter joins are drawn correctly with obtuse angles
  testing:
    - 2d.lineJoin.miterLimit
    - 2d.lineJoin.miter
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 1600;
    ctx.lineJoin = 'miter';
    ctx.strokeStyle = '#0f0';
    ctx.miterLimit = 1.083;
    ctx.beginPath();
    ctx.moveTo(800, 10000);
    ctx.lineTo(800, 300);
    ctx.lineTo(10000, -8900);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.miterLimit = 1.082;
    ctx.beginPath();
    ctx.moveTo(800, 10000);
    ctx.lineTo(800, 300);
    ctx.lineTo(10000, -8900);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.miter.rightangle
  desc: Miter joins are not drawn when the miter limit is exceeded, on exact right angles
  testing:
    - 2d.lineJoin.miter
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 400;
    ctx.lineJoin = 'miter';
    ctx.strokeStyle = '#f00';
    ctx.miterLimit = 1.414;
    ctx.beginPath();
    ctx.moveTo(200, 1000);
    ctx.lineTo(200, 200);
    ctx.lineTo(1000, 200);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.miter.lineedge
  desc: Miter joins are not drawn when the miter limit is exceeded at the corners of a zero-height rectangle
  testing:
    - 2d.lineJoin.miter
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 200;
    ctx.lineJoin = 'miter';
    ctx.strokeStyle = '#f00';
    ctx.miterLimit = 1.414;
    ctx.beginPath();
    ctx.strokeRect(100, 25, 200, 0);
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.miter.within
  desc: Miter joins are drawn when the miter limit is not quite exceeded
  testing:
    - 2d.lineJoin.miter
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 400;
    ctx.lineJoin = 'miter';
    ctx.strokeStyle = '#0f0';
    ctx.miterLimit = 1.416;
    ctx.beginPath();
    ctx.moveTo(200, 1000);
    ctx.lineTo(200, 200);
    ctx.lineTo(1000, 201);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.miter.valid
  desc: Setting miterLimit to valid values works
  testing:
    - 2d.miterLimit.set
    - 2d.miterLimit.get
  code: |
    ctx.miterLimit = 1.5;
    @assert ctx.miterLimit === 1.5;
    ctx.miterLimit = "1e1";
    @assert ctx.miterLimit === 10;
    ctx.miterLimit = 1/1024;
    @assert ctx.miterLimit === 1/1024;
    ctx.miterLimit = 1000;
    @assert ctx.miterLimit === 1000;

- name: 2d.line.miter.invalid
  desc: Setting miterLimit to invalid values is ignored
  testing:
    - 2d.miterLimit.invalid
  code: |
    ctx.miterLimit = 1.5;
    @assert ctx.miterLimit === 1.5;
    ctx.miterLimit = 1.5;
    ctx.miterLimit = 0;
    @assert ctx.miterLimit === 1.5;
    ctx.miterLimit = 1.5;
    ctx.miterLimit = -1;
    @assert ctx.miterLimit === 1.5;
    ctx.miterLimit = 1.5;
    ctx.miterLimit = Infinity;
    @assert ctx.miterLimit === 1.5;
    ctx.miterLimit = 1.5;
    ctx.miterLimit = -Infinity;
    @assert ctx.miterLimit === 1.5;
    ctx.miterLimit = 1.5;
    ctx.miterLimit = NaN;
    @assert ctx.miterLimit === 1.5;

- name: 2d.line.cross
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 200;
    ctx.lineJoin = 'bevel';
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(110, 50);
    ctx.lineTo(110, 60);
    ctx.lineTo(100, 60);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;

- name: 2d.line.union
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 100;
    ctx.lineCap = 'round';
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 24);
    ctx.lineTo(100, 25);
    ctx.lineTo(0, 26);
    ctx.closePath();
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 25,1 == 0,255,0,255;
    @assert pixel 48,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 25,1 == 0,255,0,255;
    @assert pixel 48,48 == 0,255,0,255;

- name: 2d.path.initial
  testing:
    - 2d.path.initial
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.closePath();
    ctx.fillStyle = '#f00';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.beginPath
  testing:
    - 2d.path.beginPath
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.fillStyle = '#f00';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.moveTo.basic
  testing:
    - 2d.path.moveTo
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.rect(0, 0, 10, 50);
    ctx.moveTo(100, 0);
    ctx.lineTo(10, 0);
    ctx.lineTo(10, 50);
    ctx.lineTo(100, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 90,25 == 0,255,0,255;

- name: 2d.path.moveTo.newsubpath
  testing:
    - 2d.path.moveTo
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.moveTo(0, 0);
    ctx.moveTo(100, 0);
    ctx.moveTo(100, 50);
    ctx.moveTo(0, 50);
    ctx.fillStyle = '#f00';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.moveTo.multiple
  testing:
    - 2d.path.moveTo
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.moveTo(0, 25);
    ctx.moveTo(100, 25);
    ctx.moveTo(0, 25);
    ctx.lineTo(100, 25);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.moveTo.nonfinite
  desc: moveTo() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    @nonfinite ctx.moveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.closePath.empty
  testing:
    - 2d.path.closePath.empty
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.closePath();
    ctx.fillStyle = '#f00';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.closePath.newline
  testing:
    - 2d.path.closePath.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.moveTo(-100, 25);
    ctx.lineTo(-100, -100);
    ctx.lineTo(200, -100);
    ctx.lineTo(200, 25);
    ctx.closePath();
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.closePath.nextpoint
  testing:
    - 2d.path.closePath.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.moveTo(-100, 25);
    ctx.lineTo(-100, -1000);
    ctx.closePath();
    ctx.lineTo(1000, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.lineTo.ensuresubpath.1
  desc: If there is no subpath, the point is added and nothing is drawn
  testing:
    - 2d.path.lineTo.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.lineTo(100, 50);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.lineTo.ensuresubpath.2
  desc: If there is no subpath, the point is added and used for subsequent drawing
  testing:
    - 2d.path.lineTo.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.lineTo(0, 25);
    ctx.lineTo(100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.lineTo.basic
  testing:
    - 2d.path.lineTo.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.lineTo(100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.lineTo.nextpoint
  testing:
    - 2d.path.lineTo.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.moveTo(-100, -100);
    ctx.lineTo(0, 25);
    ctx.lineTo(100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.lineTo.nonfinite
  desc: lineTo() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    @nonfinite ctx.lineTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 90,45 == 0,255,0,255;

- name: 2d.path.lineTo.nonfinite.details
  desc: lineTo() with Infinity/NaN for first arg still converts the second arg
  testing:
    - 2d.nonfinite
  code: |
    for (var arg1 of [Infinity, -Infinity, NaN]) {
      var converted = false;
      ctx.lineTo(arg1, { valueOf: function() { converted = true; return 0; } });
      @assert converted;
    }

- name: 2d.path.quadraticCurveTo.ensuresubpath.1
  desc: If there is no subpath, the first control point is added (and nothing is drawn up to it)
  testing:
    - 2d.path.quadratic.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.quadraticCurveTo(100, 50, 200, 50);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 95,45 == 0,255,0,255; @moz-todo

- name: 2d.path.quadraticCurveTo.ensuresubpath.2
  desc: If there is no subpath, the first control point is added
  testing:
    - 2d.path.quadratic.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.quadraticCurveTo(0, 25, 100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 5,45 == 0,255,0,255; @moz-todo

- name: 2d.path.quadraticCurveTo.basic
  testing:
    - 2d.path.quadratic.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.quadraticCurveTo(100, 25, 100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.quadraticCurveTo.shape
  testing:
    - 2d.path.quadratic.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 55;
    ctx.beginPath();
    ctx.moveTo(-1000, 1050);
    ctx.quadraticCurveTo(0, -1000, 1200, 1050);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.quadraticCurveTo.scaled
  testing:
    - 2d.path.quadratic.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(1000, 1000);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 0.055;
    ctx.beginPath();
    ctx.moveTo(-1, 1.05);
    ctx.quadraticCurveTo(0, -1, 1.2, 1.05);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.quadraticCurveTo.nonfinite
  desc: quadraticCurveTo() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    @nonfinite ctx.quadraticCurveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 90,45 == 0,255,0,255;

- name: 2d.path.bezierCurveTo.ensuresubpath.1
  desc: If there is no subpath, the first control point is added (and nothing is drawn up to it)
  testing:
    - 2d.path.bezier.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.bezierCurveTo(100, 50, 200, 50, 200, 50);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 95,45 == 0,255,0,255;

- name: 2d.path.bezierCurveTo.ensuresubpath.2
  desc: If there is no subpath, the first control point is added
  testing:
    - 2d.path.bezier.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.bezierCurveTo(0, 25, 100, 25, 100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 5,45 == 0,255,0,255;

- name: 2d.path.bezierCurveTo.basic
  testing:
    - 2d.path.bezier.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.bezierCurveTo(100, 25, 100, 25, 100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.bezierCurveTo.shape
  testing:
    - 2d.path.bezier.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 55;
    ctx.beginPath();
    ctx.moveTo(-2000, 3100);
    ctx.bezierCurveTo(-2000, -1000, 2100, -1000, 2100, 3100);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.bezierCurveTo.scaled
  testing:
    - 2d.path.bezier.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(1000, 1000);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 0.055;
    ctx.beginPath();
    ctx.moveTo(-2, 3.1);
    ctx.bezierCurveTo(-2, -1, 2.1, -1, 2.1, 3.1);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.bezierCurveTo.nonfinite
  desc: bezierCurveTo() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    @nonfinite ctx.bezierCurveTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 90,45 == 0,255,0,255;

- name: 2d.path.arcTo.ensuresubpath.1
  desc: If there is no subpath, the first control point is added (and nothing is drawn up to it)
  testing:
    - 2d.path.arcTo.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.arcTo(100, 50, 200, 50, 0.1);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.ensuresubpath.2
  desc: If there is no subpath, the first control point is added
  testing:
    - 2d.path.arcTo.empty
    - 2d.path.ensure
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.arcTo(0, 25, 50, 250, 0.1); // adds (x1,y1), draws nothing
    ctx.lineTo(100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.coincide.1
  desc: arcTo() has no effect if P0 = P1
  testing:
    - 2d.path.arcTo.coincide.01
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(0, 25, 50, 1000, 1);
    ctx.lineTo(100, 25);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.arcTo(50, 25, 100, 25, 1);
    ctx.stroke();
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;

- name: 2d.path.arcTo.coincide.2
  desc: arcTo() draws a straight line to P1 if P1 = P2
  testing:
    - 2d.path.arcTo.coincide.12
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(100, 25, 100, 25, 1);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.collinear.1
  desc: arcTo() with all points on a line, and P1 between P0/P2, draws a straight line to P1
  testing:
    - 2d.path.arcTo.collinear
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(100, 25, 200, 25, 1);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(-100, 25);
    ctx.arcTo(0, 25, 100, 25, 1);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.collinear.2
  desc: arcTo() with all points on a line, and P2 between P0/P1, draws a straight line to P1
  testing:
    - 2d.path.arcTo.collinear
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(100, 25, 10, 25, 1);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 25);
    ctx.arcTo(200, 25, 110, 25, 1);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.collinear.3
  desc: arcTo() with all points on a line, and P0 between P1/P2, draws a straight line to P1
  testing:
    - 2d.path.arcTo.collinear
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(100, 25, -100, 25, 1);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 25);
    ctx.arcTo(200, 25, 0, 25, 1);
    ctx.stroke();
    ctx.beginPath();
    ctx.moveTo(-100, 25);
    ctx.arcTo(0, 25, -200, 25, 1);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.shape.curve1
  desc: arcTo() curves in the right kind of shape
  testing:
    - 2d.path.arcTo.shape
  code: |
    var tol = 1.5; // tolerance to avoid antialiasing artifacts
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 10;
    ctx.beginPath();
    ctx.moveTo(10, 25);
    ctx.arcTo(75, 25, 75, 60, 20);
    ctx.stroke();
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.rect(10, 20, 45, 10);
    ctx.moveTo(80, 45);
    ctx.arc(55, 45, 25+tol, 0, -Math.PI/2, true);
    ctx.arc(55, 45, 15-tol, -Math.PI/2, 0, false);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 55,19 == 0,255,0,255;
    @assert pixel 55,20 == 0,255,0,255;
    @assert pixel 55,21 == 0,255,0,255;
    @assert pixel 64,22 == 0,255,0,255;
    @assert pixel 65,21 == 0,255,0,255;
    @assert pixel 72,28 == 0,255,0,255;
    @assert pixel 73,27 == 0,255,0,255;
    @assert pixel 78,36 == 0,255,0,255;
    @assert pixel 79,35 == 0,255,0,255;
    @assert pixel 80,44 == 0,255,0,255;
    @assert pixel 80,45 == 0,255,0,255;
    @assert pixel 80,46 == 0,255,0,255;
    @assert pixel 65,45 == 0,255,0,255;

- name: 2d.path.arcTo.shape.curve2
  desc: arcTo() curves in the right kind of shape
  testing:
    - 2d.path.arcTo.shape
  code: |
    var tol = 1.5; // tolerance to avoid antialiasing artifacts
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.rect(10, 20, 45, 10);
    ctx.moveTo(80, 45);
    ctx.arc(55, 45, 25-tol, 0, -Math.PI/2, true);
    ctx.arc(55, 45, 15+tol, -Math.PI/2, 0, false);
    ctx.fill();
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 10;
    ctx.beginPath();
    ctx.moveTo(10, 25);
    ctx.arcTo(75, 25, 75, 60, 20);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 55,19 == 0,255,0,255;
    @assert pixel 55,20 == 0,255,0,255;
    @assert pixel 55,21 == 0,255,0,255;
    @assert pixel 64,22 == 0,255,0,255;
    @assert pixel 65,21 == 0,255,0,255;
    @assert pixel 72,28 == 0,255,0,255;
    @assert pixel 73,27 == 0,255,0,255;
    @assert pixel 78,36 == 0,255,0,255;
    @assert pixel 79,35 == 0,255,0,255;
    @assert pixel 80,44 == 0,255,0,255;
    @assert pixel 80,45 == 0,255,0,255;
    @assert pixel 80,46 == 0,255,0,255;

- name: 2d.path.arcTo.shape.start
  desc: arcTo() draws a straight line from P0 to P1
  testing:
    - 2d.path.arcTo.shape
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(200, 25, 200, 50, 10);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arcTo.shape.end
  desc: arcTo() does not draw anything from P1 to P2
  testing:
    - 2d.path.arcTo.shape
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.beginPath();
    ctx.moveTo(-100, -100);
    ctx.arcTo(-100, 25, 200, 25, 10);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arcTo.negative
  desc: arcTo() with negative radius throws an exception
  testing:
    - 2d.path.arcTo.negative
  code: |
    @assert throws INDEX_SIZE_ERR ctx.arcTo(0, 0, 0, 0, -1);

- name: 2d.path.arcTo.zero.1
  desc: arcTo() with zero radius draws a straight line from P0 to P1
  testing:
    - 2d.path.arcTo.zeroradius
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(100, 25, 100, 100, 0);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(0, -25);
    ctx.arcTo(50, -25, 50, 50, 0);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.zero.2
  desc: arcTo() with zero radius draws a straight line from P0 to P1, even when all points are collinear
  testing:
    - 2d.path.arcTo.zeroradius
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arcTo(100, 25, -100, 25, 0);
    ctx.stroke();
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 25);
    ctx.arcTo(200, 25, 50, 25, 0);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arcTo.transformation
  desc: arcTo joins up to the last subpath point correctly
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 50);
    ctx.translate(100, 0);
    ctx.arcTo(50, 50, 50, 0, 50);
    ctx.lineTo(-100, 0);
    ctx.fill();
    @assert pixel 0,0 == 0,255,0,255;
    @assert pixel 50,0 == 0,255,0,255;
    @assert pixel 99,0 == 0,255,0,255;
    @assert pixel 0,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 99,25 == 0,255,0,255;
    @assert pixel 0,49 == 0,255,0,255;
    @assert pixel 50,49 == 0,255,0,255;
    @assert pixel 99,49 == 0,255,0,255;

- name: 2d.path.arcTo.scale
  desc: arcTo scales the curve, not just the control points
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 50);
    ctx.translate(100, 0);
    ctx.scale(0.1, 1);
    ctx.arcTo(50, 50, 50, 0, 50);
    ctx.lineTo(-1000, 0);
    ctx.fill();
    @assert pixel 0,0 == 0,255,0,255;
    @assert pixel 50,0 == 0,255,0,255;
    @assert pixel 99,0 == 0,255,0,255;
    @assert pixel 0,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 99,25 == 0,255,0,255;
    @assert pixel 0,49 == 0,255,0,255;
    @assert pixel 50,49 == 0,255,0,255;
    @assert pixel 99,49 == 0,255,0,255;

- name: 2d.path.arcTo.nonfinite
  desc: arcTo() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    @nonfinite ctx.arcTo(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 90,45 == 0,255,0,255;


- name: 2d.path.arc.empty
  desc: arc() with an empty path does not draw a straight line to the start point
  testing:
    - 2d.path.arc.nonempty
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.arc(200, 25, 5, 0, 2*Math.PI, true);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.nonempty
  desc: arc() with a non-empty path does draw a straight line to the start point
  testing:
    - 2d.path.arc.nonempty
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arc(200, 25, 5, 0, 2*Math.PI, true);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.end
  desc: arc() adds the end point of the arc to the subpath
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(-100, 0);
    ctx.arc(-100, 0, 25, -Math.PI/2, Math.PI/2, true);
    ctx.lineTo(100, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.default
  desc: arc() with missing last argument defaults to clockwise
  testing:
    - 2d.path.arc.omitted
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 0);
    ctx.arc(100, 0, 150, -Math.PI, Math.PI/2);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.angle.1
  desc: arc() draws pi/2 .. -pi anticlockwise correctly
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 0);
    ctx.arc(100, 0, 150, Math.PI/2, -Math.PI, true);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.angle.2
  desc: arc() draws -3pi/2 .. -pi anticlockwise correctly
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 0);
    ctx.arc(100, 0, 150, -3*Math.PI/2, -Math.PI, true);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.angle.3
  desc: arc() wraps angles mod 2pi when anticlockwise and end > start+2pi
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 0);
    ctx.arc(100, 0, 150, (512+1/2)*Math.PI, (1024-1)*Math.PI, true);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.angle.4
  desc: arc() draws a full circle when clockwise and end > start+2pi
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.arc(50, 25, 60, (512+1/2)*Math.PI, (1024-1)*Math.PI, false);
    ctx.fill();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.angle.5
  desc: arc() wraps angles mod 2pi when clockwise and start > end+2pi
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(100, 0);
    ctx.arc(100, 0, 150, (1024-1)*Math.PI, (512+1/2)*Math.PI, false);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.angle.6
  desc: arc() draws a full circle when anticlockwise and start > end+2pi
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.arc(50, 25, 60, (1024-1)*Math.PI, (512+1/2)*Math.PI, true);
    ctx.fill();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.zero.1
  desc: arc() draws nothing when startAngle = endAngle and anticlockwise
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.arc(50, 25, 50, 0, 0, true);
    ctx.stroke();
    @assert pixel 50,20 == 0,255,0,255;

- name: 2d.path.arc.zero.2
  desc: arc() draws nothing when startAngle = endAngle and clockwise
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.arc(50, 25, 50, 0, 0, false);
    ctx.stroke();
    @assert pixel 50,20 == 0,255,0,255;

- name: 2d.path.arc.twopie.1
  desc: arc() draws nothing when end = start + 2pi-e and anticlockwise
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, true);
    ctx.stroke();
    @assert pixel 50,20 == 0,255,0,255;

- name: 2d.path.arc.twopie.2
  desc: arc() draws a full circle when end = start + 2pi-e and clockwise
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.arc(50, 25, 50, 0, 2*Math.PI - 1e-4, false);
    ctx.stroke();
    @assert pixel 50,20 == 0,255,0,255;

- name: 2d.path.arc.twopie.3
  desc: arc() draws a full circle when end = start + 2pi+e and anticlockwise
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, true);
    ctx.stroke();
    @assert pixel 50,20 == 0,255,0,255;

- name: 2d.path.arc.twopie.4
  desc: arc() draws nothing when end = start + 2pi+e and clockwise
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.arc(50, 25, 50, 0, 2*Math.PI + 1e-4, false);
    ctx.stroke();
    @assert pixel 50,20 == 0,255,0,255;

- name: 2d.path.arc.shape.1
  desc: arc() from 0 to pi does not draw anything in the wrong half
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.arc(50, 50, 50, 0, Math.PI, false);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 20,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.shape.2
  desc: arc() from 0 to pi draws stuff in the right half
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 100;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.arc(50, 50, 50, 0, Math.PI, true);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 20,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.shape.3
  desc: arc() from 0 to -pi/2 does not draw anything in the wrong quadrant
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 100;
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.arc(0, 50, 50, 0, -Math.PI/2, false);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255; @moz-todo
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.shape.4
  desc: arc() from 0 to -pi/2 draws stuff in the right quadrant
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 150;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.arc(-50, 50, 100, 0, -Math.PI/2, true);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.shape.5
  desc: arc() from 0 to 5pi does not draw crazy things
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 200;
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.arc(300, 0, 100, 0, 5*Math.PI, false);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.selfintersect.1
  desc: arc() with lineWidth > 2*radius is drawn sensibly
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 200;
    ctx.strokeStyle = '#f00';
    ctx.beginPath();
    ctx.arc(100, 50, 25, 0, -Math.PI/2, true);
    ctx.stroke();
    ctx.beginPath();
    ctx.arc(0, 0, 25, 0, -Math.PI/2, true);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255; @moz-todo
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.selfintersect.2
  desc: arc() with lineWidth > 2*radius is drawn sensibly
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 180;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.arc(-50, 50, 25, 0, -Math.PI/2, true);
    ctx.stroke();
    ctx.beginPath();
    ctx.arc(100, 0, 25, 0, -Math.PI/2, true);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 90,10 == 0,255,0,255;
    @assert pixel 97,1 == 0,255,0,255;
    @assert pixel 97,2 == 0,255,0,255;
    @assert pixel 97,3 == 0,255,0,255;
    @assert pixel 2,48 == 0,255,0,255;

- name: 2d.path.arc.negative
  desc: arc() with negative radius throws INDEX_SIZE_ERR
  testing:
    - 2d.path.arc.negative
  code: |
    @assert throws INDEX_SIZE_ERR ctx.arc(0, 0, -1, 0, 0, true);

- name: 2d.path.arc.zeroradius
  desc: arc() with zero radius draws a line to the start point
  testing:
    - 2d.path.arc.zero
  code: |
    ctx.fillStyle = '#f00'
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.strokeStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 25);
    ctx.arc(200, 25, 0, 0, Math.PI, true);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.arc.scale.1
  desc: Non-uniformly scaled arcs are the right shape
  testing:
    - 2d.path.transformation
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(2, 0.5);
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.arc(25, 50, 56, 0, 2*Math.PI, false);
    ctx.fill();
    ctx.fillStyle = '#f00';
    ctx.beginPath();
    ctx.moveTo(-25, 50);
    ctx.arc(-25, 50, 24, 0, 2*Math.PI, false);
    ctx.moveTo(75, 50);
    ctx.arc(75, 50, 24, 0, 2*Math.PI, false);
    ctx.moveTo(25, -25);
    ctx.arc(25, -25, 24, 0, 2*Math.PI, false);
    ctx.moveTo(25, 125);
    ctx.arc(25, 125, 24, 0, 2*Math.PI, false);
    ctx.fill();
    @assert pixel 0,0 == 0,255,0,255;
    @assert pixel 50,0 == 0,255,0,255;
    @assert pixel 99,0 == 0,255,0,255;
    @assert pixel 0,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 99,25 == 0,255,0,255;
    @assert pixel 0,49 == 0,255,0,255;
    @assert pixel 50,49 == 0,255,0,255;
    @assert pixel 99,49 == 0,255,0,255;

- name: 2d.path.arc.scale.2
  desc: Highly scaled arcs are the right shape
  testing:
    - 2d.path.arc.draw
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.scale(100, 100);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 1.2;
    ctx.beginPath();
    ctx.arc(0, 0, 0.6, 0, Math.PI/2, false);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 50,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 98,25 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 50,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.arc.nonfinite
  desc: arc() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    @nonfinite ctx.arc(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <2*Math.PI Infinity -Infinity NaN>, <true>);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 90,45 == 0,255,0,255;


- name: 2d.path.rect.basic
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.rect(0, 0, 100, 50);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.newsubpath
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.moveTo(-100, 25);
    ctx.lineTo(-50, 25);
    ctx.rect(200, 25, 1, 1);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.closed
  testing:
    - 2d.path.rect.closed
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 200;
    ctx.lineJoin = 'miter';
    ctx.rect(100, 50, 100, 100);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.end.1
  testing:
    - 2d.path.rect.newsubpath
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 100;
    ctx.rect(200, 100, 400, 1000);
    ctx.lineTo(-2000, -1000);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.end.2
  testing:
    - 2d.path.rect.newsubpath
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 450;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'bevel';
    ctx.rect(150, 150, 2000, 2000);
    ctx.lineTo(160, 160);
    ctx.stroke();
    @assert pixel 1,1 == 0,255,0,255;
    @assert pixel 98,1 == 0,255,0,255;
    @assert pixel 1,48 == 0,255,0,255;
    @assert pixel 98,48 == 0,255,0,255;

- name: 2d.path.rect.zero.1
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.rect(0, 50, 100, 0);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.zero.2
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.rect(50, -100, 0, 250);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.zero.3
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.beginPath();
    ctx.rect(50, 25, 0, 0);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.zero.4
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 50;
    ctx.rect(100, 25, 0, 0);
    ctx.lineTo(0, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.zero.5
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.moveTo(0, 0);
    ctx.rect(100, 25, 0, 0);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.rect.zero.6
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineJoin = 'miter';
    ctx.miterLimit = 1.5;
    ctx.lineWidth = 200;
    ctx.beginPath();
    ctx.rect(100, 25, 1000, 0);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255; @moz-todo

- name: 2d.path.rect.negative
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.fillStyle = '#0f0';
    ctx.rect(0, 0, 50, 25);
    ctx.rect(100, 0, -50, 25);
    ctx.rect(0, 50, 50, -25);
    ctx.rect(100, 50, -50, -25);
    ctx.fill();
    @assert pixel 25,12 == 0,255,0,255;
    @assert pixel 75,12 == 0,255,0,255;
    @assert pixel 25,37 == 0,255,0,255;
    @assert pixel 75,37 == 0,255,0,255;

- name: 2d.path.rect.winding
  testing:
    - 2d.path.rect.subpath
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.fillStyle = '#f00';
    ctx.rect(0, 0, 50, 50);
    ctx.rect(100, 50, -50, -50);
    ctx.rect(0, 25, 100, -25);
    ctx.rect(100, 25, -100, 25);
    ctx.fill();
    @assert pixel 25,12 == 0,255,0,255;
    @assert pixel 75,12 == 0,255,0,255;
    @assert pixel 25,37 == 0,255,0,255;
    @assert pixel 75,37 == 0,255,0,255;

- name: 2d.path.rect.selfintersect
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 90;
    ctx.beginPath();
    ctx.rect(45, 20, 10, 10);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255; @moz-todo

- name: 2d.path.rect.nonfinite
  desc: rect() with Infinity/NaN is ignored
  testing:
    - 2d.nonfinite
  code: |
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    @nonfinite ctx.rect(<0 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>, <1 Infinity -Infinity NaN>);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 90,45 == 0,255,0,255;

- name: 2d.path.fill.overlap
  testing:
    - 2d.path.fill.basic
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
    ctx.rect(0, 0, 100, 50);
    ctx.closePath();
    ctx.rect(10, 10, 80, 30);
    ctx.fill();
    @assert pixel 50,25 ==~ 0,127,0,255 +/- 1;

- name: 2d.path.fill.winding.add
  testing:
    - 2d.path.fill.basic
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.moveTo(-10, -10);
    ctx.lineTo(110, -10);
    ctx.lineTo(110, 60);
    ctx.lineTo(-10, 60);
    ctx.lineTo(-10, -10);
    ctx.lineTo(0, 0);
    ctx.lineTo(100, 0);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.fill.winding.subtract.1
  testing:
    - 2d.path.fill.basic
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.moveTo(-10, -10);
    ctx.lineTo(110, -10);
    ctx.lineTo(110, 60);
    ctx.lineTo(-10, 60);
    ctx.lineTo(-10, -10);
    ctx.lineTo(0, 0);
    ctx.lineTo(0, 50);
    ctx.lineTo(100, 50);
    ctx.lineTo(100, 0);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.fill.winding.subtract.2
  testing:
    - 2d.path.fill.basic
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.moveTo(-10, -10);
    ctx.lineTo(110, -10);
    ctx.lineTo(110, 60);
    ctx.lineTo(-10, 60);
    ctx.moveTo(0, 0);
    ctx.lineTo(0, 50);
    ctx.lineTo(100, 50);
    ctx.lineTo(100, 0);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.fill.winding.subtract.3
  testing:
    - 2d.path.fill.basic
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.moveTo(-10, -10);
    ctx.lineTo(110, -10);
    ctx.lineTo(110, 60);
    ctx.lineTo(-10, 60);
    ctx.lineTo(-10, -10);
    ctx.lineTo(-20, -20);
    ctx.lineTo(120, -20);
    ctx.lineTo(120, 70);
    ctx.lineTo(-20, 70);
    ctx.lineTo(-20, -20);
    ctx.lineTo(0, 0);
    ctx.lineTo(0, 50);
    ctx.lineTo(100, 50);
    ctx.lineTo(100, 0);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.fill.closed.basic
  testing:
    - 2d.path.fill.closed
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.fill.closed.unaffected
  testing:
    - 2d.path.fill.closed
  code: |
    ctx.fillStyle = '#00f';
    ctx.fillRect(0, 0, 100, 50);
    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);
    ctx.lineTo(100, 50);
    ctx.fillStyle = '#f00';
    ctx.fill();
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 90,10 == 0,255,0,255;
    @assert pixel 10,40 == 0,255,0,255;

- name: 2d.path.stroke.overlap
  desc: Stroked subpaths are combined before being drawn
  testing:
    - 2d.path.stroke.basic
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = 'rgba(0, 255, 0, 0.5)';
    ctx.lineWidth = 50;
    ctx.moveTo(0, 20);
    ctx.lineTo(100, 20);
    ctx.moveTo(0, 30);
    ctx.lineTo(100, 30);
    ctx.stroke();
    @assert pixel 50,25 ==~ 0,127,0,255 +/- 1;

- name: 2d.path.stroke.union
  desc: Strokes in opposite directions are unioned, not subtracted
  testing:
    - 2d.path.stroke.basic
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 40;
    ctx.moveTo(0, 10);
    ctx.lineTo(100, 10);
    ctx.moveTo(100, 40);
    ctx.lineTo(0, 40);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.stroke.unaffected
  desc: Stroking does not start a new path or subpath
  testing:
    - 2d.path.stroke.basic
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.lineWidth = 50;
    ctx.moveTo(-100, 25);
    ctx.lineTo(-100, -100);
    ctx.lineTo(200, -100);
    ctx.lineTo(200, 25);
    ctx.strokeStyle = '#f00';
    ctx.stroke();
    ctx.closePath();
    ctx.strokeStyle = '#0f0';
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.stroke.scale1
  desc: Stroke line widths are scaled by the current transformation matrix
  testing:
    - 2d.path.transformation
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(25, 12.5, 50, 25);
    ctx.save();
    ctx.scale(50, 25);
    ctx.strokeStyle = '#0f0';
    ctx.stroke();
    ctx.restore();
    ctx.beginPath();
    ctx.rect(-25, -12.5, 150, 75);
    ctx.save();
    ctx.scale(50, 25);
    ctx.strokeStyle = '#f00';
    ctx.stroke();
    ctx.restore();
    @assert pixel 0,0 == 0,255,0,255;
    @assert pixel 50,0 == 0,255,0,255;
    @assert pixel 99,0 == 0,255,0,255;
    @assert pixel 0,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 99,25 == 0,255,0,255;
    @assert pixel 0,49 == 0,255,0,255;
    @assert pixel 50,49 == 0,255,0,255;
    @assert pixel 99,49 == 0,255,0,255;

- name: 2d.path.stroke.scale2
  desc: Stroke line widths are scaled by the current transformation matrix
  testing:
    - 2d.path.transformation
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(25, 12.5, 50, 25);
    ctx.save();
    ctx.rotate(Math.PI/2);
    ctx.scale(25, 50);
    ctx.strokeStyle = '#0f0';
    ctx.stroke();
    ctx.restore();
    ctx.beginPath();
    ctx.rect(-25, -12.5, 150, 75);
    ctx.save();
    ctx.rotate(Math.PI/2);
    ctx.scale(25, 50);
    ctx.strokeStyle = '#f00';
    ctx.stroke();
    ctx.restore();
    @assert pixel 0,0 == 0,255,0,255;
    @assert pixel 50,0 == 0,255,0,255;
    @assert pixel 99,0 == 0,255,0,255;
    @assert pixel 0,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 99,25 == 0,255,0,255;
    @assert pixel 0,49 == 0,255,0,255;
    @assert pixel 50,49 == 0,255,0,255;
    @assert pixel 99,49 == 0,255,0,255;

- name: 2d.path.stroke.skew
  desc: Strokes lines are skewed by the current transformation matrix
  testing:
    - 2d.path.transformation
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.save();
    ctx.beginPath();
    ctx.moveTo(49, -50);
    ctx.lineTo(201, -50);
    ctx.rotate(Math.PI/4);
    ctx.scale(1, 283);
    ctx.strokeStyle = '#0f0';
    ctx.stroke();
    ctx.restore();
    ctx.save();
    ctx.beginPath();
    ctx.translate(-150, 0);
    ctx.moveTo(49, -50);
    ctx.lineTo(199, -50);
    ctx.rotate(Math.PI/4);
    ctx.scale(1, 142);
    ctx.strokeStyle = '#f00';
    ctx.stroke();
    ctx.restore();
    ctx.save();
    ctx.beginPath();
    ctx.translate(-150, 0);
    ctx.moveTo(49, -50);
    ctx.lineTo(199, -50);
    ctx.rotate(Math.PI/4);
    ctx.scale(1, 142);
    ctx.strokeStyle = '#f00';
    ctx.stroke();
    ctx.restore();
    @assert pixel 0,0 == 0,255,0,255;
    @assert pixel 50,0 == 0,255,0,255;
    @assert pixel 99,0 == 0,255,0,255;
    @assert pixel 0,25 == 0,255,0,255;
    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 99,25 == 0,255,0,255;
    @assert pixel 0,49 == 0,255,0,255;
    @assert pixel 50,49 == 0,255,0,255;
    @assert pixel 99,49 == 0,255,0,255;

- name: 2d.path.stroke.empty
  desc: Empty subpaths are not stroked
  testing:
    - 2d.path.stroke.empty
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'round';
    ctx.beginPath();
    ctx.moveTo(40, 25);
    ctx.moveTo(60, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.stroke.prune.line
  desc: Zero-length line segments from lineTo are removed before stroking
  testing:
    - 2d.path.stroke.prune
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'round';
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.lineTo(50, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255; @moz-todo

- name: 2d.path.stroke.prune.closed
  desc: Zero-length line segments from closed paths are removed before stroking
  testing:
    - 2d.path.stroke.prune
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'round';
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.lineTo(50, 25);
    ctx.closePath();
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255; @moz-todo

- name: 2d.path.stroke.prune.curve
  desc: Zero-length line segments from quadraticCurveTo and bezierCurveTo are removed before stroking
  testing:
    - 2d.path.stroke.prune
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'round';
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.quadraticCurveTo(50, 25, 50, 25);
    ctx.stroke();
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.bezierCurveTo(50, 25, 50, 25, 50, 25);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255; @moz-todo

- name: 2d.path.stroke.prune.arc
  desc: Zero-length line segments from arcTo and arc are removed before stroking
  testing:
    - 2d.path.stroke.prune
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'round';
    ctx.beginPath();
    ctx.moveTo(50, 25);
    ctx.arcTo(50, 25, 150, 25, 10);
    ctx.stroke();
    ctx.beginPath();
    ctx.moveTo(60, 25);
    ctx.arc(50, 25, 10, 0, 0, false);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255; @moz-todo

- name: 2d.path.stroke.prune.rect
  desc: Zero-length line segments from rect and strokeRect are removed before stroking
  testing:
    - 2d.path.stroke.prune
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 100;
    ctx.lineCap = 'round';
    ctx.lineJoin = 'round';
    ctx.beginPath();
    ctx.rect(50, 25, 0, 0);
    ctx.stroke();
    ctx.strokeRect(50, 25, 0, 0);
    @assert pixel 50,25 == 0,255,0,255; @moz-todo

- name: 2d.path.stroke.prune.corner
  desc: Zero-length line segments are removed before stroking with miters
  testing:
    - 2d.path.stroke.prune
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 400;
    ctx.lineJoin = 'miter';
    ctx.miterLimit = 1.4;
    ctx.beginPath();
    ctx.moveTo(-1000, 200);
    ctx.lineTo(-100, 200);
    ctx.lineTo(-100, 200);
    ctx.lineTo(-100, 200);
    ctx.lineTo(-100, 1000);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.transformation.basic
  testing:
    - 2d.path.transformation
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.translate(-100, 0);
    ctx.rect(100, 0, 100, 50);
    ctx.translate(0, -100);
    ctx.fillStyle = '#0f0';
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.transformation.multiple
  desc: Transformations are applied while building paths, not when drawing
  testing:
    - 2d.path.transformation
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.translate(-100, 0);
    ctx.rect(0, 0, 100, 50);
    ctx.fill();
    ctx.translate(100, 0);
    ctx.fill();
    ctx.beginPath();
    ctx.strokeStyle = '#f00';
    ctx.lineWidth = 50;
    ctx.translate(0, -50);
    ctx.moveTo(0, 25);
    ctx.lineTo(100, 25);
    ctx.stroke();
    ctx.translate(0, 50);
    ctx.stroke();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.transformation.changing
  desc: Transformations are applied while building paths, not when drawing
  testing:
    - 2d.path.transformation
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.moveTo(0, 0);
    ctx.translate(100, 0);
    ctx.lineTo(0, 0);
    ctx.translate(0, 50);
    ctx.lineTo(0, 0);
    ctx.translate(-100, 0);
    ctx.lineTo(0, 0);
    ctx.translate(1000, 1000);
    ctx.rotate(Math.PI/2);
    ctx.scale(0.1, 0.1);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.clip.empty
  testing:
    - 2d.path.clip.basic
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.clip.basic.1
  testing:
    - 2d.path.clip.basic
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(0, 0, 100, 50);
    ctx.clip();
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.clip.basic.2
  testing:
    - 2d.path.clip.basic
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(-100, 0, 100, 50);
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.clip.intersect
  testing:
    - 2d.path.clip.basic
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.rect(0, 0, 50, 50);
    ctx.clip();
    ctx.beginPath();
    ctx.rect(50, 0, 50, 50)
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.clip.winding.1
  testing:
    - 2d.path.clip.basic
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.moveTo(-10, -10);
    ctx.lineTo(110, -10);
    ctx.lineTo(110, 60);
    ctx.lineTo(-10, 60);
    ctx.lineTo(-10, -10);
    ctx.lineTo(0, 0);
    ctx.lineTo(0, 50);
    ctx.lineTo(100, 50);
    ctx.lineTo(100, 0);
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.clip.winding.2
  testing:
    - 2d.path.clip.basic
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.beginPath();
    ctx.moveTo(-10, -10);
    ctx.lineTo(110, -10);
    ctx.lineTo(110, 60);
    ctx.lineTo(-10, 60);
    ctx.lineTo(-10, -10);
    ctx.clip();
    ctx.beginPath();
    ctx.moveTo(0, 0);
    ctx.lineTo(0, 50);
    ctx.lineTo(100, 50);
    ctx.lineTo(100, 0);
    ctx.lineTo(0, 0);
    ctx.clip();
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.clip.unaffected
  testing:
    - 2d.path.clip.closed
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.beginPath();
    ctx.moveTo(0, 0);
    ctx.lineTo(0, 50);
    ctx.lineTo(100, 50);
    ctx.lineTo(100, 0);
    ctx.clip();
    ctx.lineTo(0, 0);
    ctx.fill();
    @assert pixel 50,25 == 0,255,0,255;

- name: 2d.path.isPointInPath.basic.1
  desc: isPointInPath() detects whether the point is inside the path
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.rect(0, 0, 20, 20);
    @assert ctx.isPointInPath(10, 10) === true;
    @assert ctx.isPointInPath(30, 10) === false;

- name: 2d.path.isPointInPath.basic.2
  desc: isPointInPath() detects whether the point is inside the path
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.rect(20, 0, 20, 20);
    @assert ctx.isPointInPath(10, 10) === false;
    @assert ctx.isPointInPath(30, 10) === true;

- name: 2d.path.isPointInPath.edge
  desc: isPointInPath() counts points on the path as being inside
  testing:
    - 2d.path.isPointInPath.edge
  code: |
    ctx.rect(0, 0, 20, 20);
    @assert ctx.isPointInPath(0, 0) === true;
    @assert ctx.isPointInPath(10, 0) === true;
    @assert ctx.isPointInPath(20, 0) === true;
    @assert ctx.isPointInPath(20, 10) === true;
    @assert ctx.isPointInPath(20, 20) === true;
    @assert ctx.isPointInPath(10, 20) === true;
    @assert ctx.isPointInPath(0, 20) === true;
    @assert ctx.isPointInPath(0, 10) === true;
    @assert ctx.isPointInPath(10, -0.01) === false;
    @assert ctx.isPointInPath(10, 20.01) === false;
    @assert ctx.isPointInPath(-0.01, 10) === false;
    @assert ctx.isPointInPath(20.01, 10) === false;

- name: 2d.path.isPointInPath.empty
  desc: isPointInPath() works when there is no path
  testing:
    - 2d.path.isPointInPath
  code: |
    @assert ctx.isPointInPath(0, 0) === false;

- name: 2d.path.isPointInPath.subpath
  desc: isPointInPath() uses the current path, not just the subpath
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.rect(0, 0, 20, 20);
    ctx.beginPath();
    ctx.rect(20, 0, 20, 20);
    ctx.closePath();
    ctx.rect(40, 0, 20, 20);
    @assert ctx.isPointInPath(10, 10) === false;
    @assert ctx.isPointInPath(30, 10) === true;
    @assert ctx.isPointInPath(50, 10) === true;

- name: 2d.path.isPointInPath.outside
  desc: isPointInPath() works on paths outside the canvas
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.rect(0, -100, 20, 20);
    ctx.rect(20, -10, 20, 20);
    @assert ctx.isPointInPath(10, -110) === false;
    @assert ctx.isPointInPath(10, -90) === true;
    @assert ctx.isPointInPath(10, -70) === false;
    @assert ctx.isPointInPath(30, -20) === false;
    @assert ctx.isPointInPath(30, 0) === true;
    @assert ctx.isPointInPath(30, 20) === false;

- name: 2d.path.isPointInPath.unclosed
  desc: isPointInPath() works on unclosed subpaths
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.moveTo(0, 0);
    ctx.lineTo(20, 0);
    ctx.lineTo(20, 20);
    ctx.lineTo(0, 20);
    @assert ctx.isPointInPath(10, 10) === true;
    @assert ctx.isPointInPath(30, 10) === false;

- name: 2d.path.isPointInPath.arc
  desc: isPointInPath() works on arcs
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.arc(50, 25, 10, 0, Math.PI, false);
    @assert ctx.isPointInPath(50, 10) === false;
    @assert ctx.isPointInPath(50, 20) === false;
    @assert ctx.isPointInPath(50, 30) === true;
    @assert ctx.isPointInPath(50, 40) === false;
    @assert ctx.isPointInPath(30, 20) === false;
    @assert ctx.isPointInPath(70, 20) === false;
    @assert ctx.isPointInPath(30, 30) === false;
    @assert ctx.isPointInPath(70, 30) === false;

- name: 2d.path.isPointInPath.bigarc
  desc: isPointInPath() works on unclosed arcs larger than 2pi
  opera: { bug: 320937 }
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.arc(50, 25, 10, 0, 7, false);
    @assert ctx.isPointInPath(50, 10) === false;
    @assert ctx.isPointInPath(50, 20) === true;
    @assert ctx.isPointInPath(50, 30) === true;
    @assert ctx.isPointInPath(50, 40) === false;
    @assert ctx.isPointInPath(30, 20) === false;
    @assert ctx.isPointInPath(70, 20) === false;
    @assert ctx.isPointInPath(30, 30) === false;
    @assert ctx.isPointInPath(70, 30) === false;

- name: 2d.path.isPointInPath.bezier
  desc: isPointInPath() works on Bezier curves
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.moveTo(25, 25);
    ctx.bezierCurveTo(50, -50, 50, 100, 75, 25);
    @assert ctx.isPointInPath(25, 20) === false;
    @assert ctx.isPointInPath(25, 30) === false;
    @assert ctx.isPointInPath(30, 20) === true;
    @assert ctx.isPointInPath(30, 30) === false;
    @assert ctx.isPointInPath(40, 2) === false;
    @assert ctx.isPointInPath(40, 20) === true;
    @assert ctx.isPointInPath(40, 30) === false;
    @assert ctx.isPointInPath(40, 47) === false;
    @assert ctx.isPointInPath(45, 20) === true;
    @assert ctx.isPointInPath(45, 30) === false;
    @assert ctx.isPointInPath(55, 20) === false;
    @assert ctx.isPointInPath(55, 30) === true;
    @assert ctx.isPointInPath(60, 2) === false;
    @assert ctx.isPointInPath(60, 20) === false;
    @assert ctx.isPointInPath(60, 30) === true;
    @assert ctx.isPointInPath(60, 47) === false;
    @assert ctx.isPointInPath(70, 20) === false;
    @assert ctx.isPointInPath(70, 30) === true;
    @assert ctx.isPointInPath(75, 20) === false;
    @assert ctx.isPointInPath(75, 30) === false;

- name: 2d.path.isPointInPath.winding
  desc: isPointInPath() uses the non-zero winding number rule
  testing:
    - 2d.path.isPointInPath
  code: |
    // Create a square ring, using opposite windings to make a hole in the centre
    ctx.moveTo(0, 0);
    ctx.lineTo(50, 0);
    ctx.lineTo(50, 50);
    ctx.lineTo(0, 50);
    ctx.lineTo(0, 0);
    ctx.lineTo(10, 10);
    ctx.lineTo(10, 40);
    ctx.lineTo(40, 40);
    ctx.lineTo(40, 10);
    ctx.lineTo(10, 10);
    @assert ctx.isPointInPath(5, 5) === true;
    @assert ctx.isPointInPath(25, 5) === true;
    @assert ctx.isPointInPath(45, 5) === true;
    @assert ctx.isPointInPath(5, 25) === true;
    @assert ctx.isPointInPath(25, 25) === false;
    @assert ctx.isPointInPath(45, 25) === true;
    @assert ctx.isPointInPath(5, 45) === true;
    @assert ctx.isPointInPath(25, 45) === true;
    @assert ctx.isPointInPath(45, 45) === true;

- name: 2d.path.isPointInPath.transform.1
  desc: isPointInPath() handles transformations correctly
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.translate(50, 0);
    ctx.rect(0, 0, 20, 20);
    @assert ctx.isPointInPath(-40, 10) === false;
    @assert ctx.isPointInPath(10, 10) === false;
    @assert ctx.isPointInPath(49, 10) === false;
    @assert ctx.isPointInPath(51, 10) === true;
    @assert ctx.isPointInPath(69, 10) === true;
    @assert ctx.isPointInPath(71, 10) === false;

- name: 2d.path.isPointInPath.transform.2
  desc: isPointInPath() handles transformations correctly
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.rect(50, 0, 20, 20);
    ctx.translate(50, 0);
    @assert ctx.isPointInPath(-40, 10) === false;
    @assert ctx.isPointInPath(10, 10) === false;
    @assert ctx.isPointInPath(49, 10) === false;
    @assert ctx.isPointInPath(51, 10) === true;
    @assert ctx.isPointInPath(69, 10) === true;
    @assert ctx.isPointInPath(71, 10) === false;

- name: 2d.path.isPointInPath.transform.3
  desc: isPointInPath() handles transformations correctly
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.scale(-1, 1);
    ctx.rect(-70, 0, 20, 20);
    @assert ctx.isPointInPath(-40, 10) === false;
    @assert ctx.isPointInPath(10, 10) === false;
    @assert ctx.isPointInPath(49, 10) === false;
    @assert ctx.isPointInPath(51, 10) === true;
    @assert ctx.isPointInPath(69, 10) === true;
    @assert ctx.isPointInPath(71, 10) === false;

- name: 2d.path.isPointInPath.transform.4
  desc: isPointInPath() handles transformations correctly
  testing:
    - 2d.path.isPointInPath
  code: |
    ctx.translate(50, 0);
    ctx.rect(50, 0, 20, 20);
    ctx.translate(0, 50);
    @assert ctx.isPointInPath(60, 10) === false;
    @assert ctx.isPointInPath(110, 10) === true;
    @assert ctx.isPointInPath(110, 60) === false;

- name: 2d.path.isPointInPath.nonfinite
  desc: isPointInPath() returns false for non-finite arguments
  testing:
    - 2d.path.isPointInPath.nonfinite
  code: |
    ctx.rect(-100, -50, 200, 100);
    @assert ctx.isPointInPath(Infinity, 0) === false;
    @assert ctx.isPointInPath(-Infinity, 0) === false;
    @assert ctx.isPointInPath(NaN, 0) === false;
    @assert ctx.isPointInPath(0, Infinity) === false;
    @assert ctx.isPointInPath(0, -Infinity) === false;
    @assert ctx.isPointInPath(0, NaN) === false;
    @assert ctx.isPointInPath(NaN, NaN) === false;

- name: 2d.coordinatespace
  desc: Coordinate space goes from top-left to bottom-right
  notes: This should not be upside down.
  testing:
    - 2d.coordinatespace
  code: |
    ctx.fillStyle = '#00f';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0ff';
    ctx.fillRect(0, 0, 50, 25);
    @assert pixel 25,12 == 0,255,255,255;
    @assert pixel 75,12 == 0,0,255,255;
    @assert pixel 25,37 == 0,0,255,255;
    @assert pixel 75,37 == 0,0,255,255;

- name: 2d.missingargs
  desc: Missing arguments cause TypeError
  code: |
    @assert throws TypeError ctx.scale();
    @assert throws TypeError ctx.scale(1);
    @assert throws TypeError ctx.rotate();
    @assert throws TypeError ctx.translate();
    @assert throws TypeError ctx.translate(0);
    if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
        @assert throws TypeError ctx.transform();
        @assert throws TypeError ctx.transform(1);
        @assert throws TypeError ctx.transform(1, 0);
        @assert throws TypeError ctx.transform(1, 0, 0);
        @assert throws TypeError ctx.transform(1, 0, 0, 1);
        @assert throws TypeError ctx.transform(1, 0, 0, 1, 0);
    }
    if (ctx.setTransform) {
        @assert throws TypeError ctx.setTransform();
        @assert throws TypeError ctx.setTransform(1);
        @assert throws TypeError ctx.setTransform(1, 0);
        @assert throws TypeError ctx.setTransform(1, 0, 0);
        @assert throws TypeError ctx.setTransform(1, 0, 0, 1);
        @assert throws TypeError ctx.setTransform(1, 0, 0, 1, 0);
    }
    @assert throws TypeError ctx.createLinearGradient();
    @assert throws TypeError ctx.createLinearGradient(0);
    @assert throws TypeError ctx.createLinearGradient(0, 0);
    @assert throws TypeError ctx.createLinearGradient(0, 0, 1);
    @assert throws TypeError ctx.createRadialGradient();
    @assert throws TypeError ctx.createRadialGradient(0);
    @assert throws TypeError ctx.createRadialGradient(0, 0);
    @assert throws TypeError ctx.createRadialGradient(0, 0, 1);
    @assert throws TypeError ctx.createRadialGradient(0, 0, 1, 0);
    @assert throws TypeError ctx.createRadialGradient(0, 0, 1, 0, 0);
    @assert throws TypeError ctx.createPattern(offscreenCanvas);
    @assert throws TypeError ctx.clearRect();
    @assert throws TypeError ctx.clearRect(0);
    @assert throws TypeError ctx.clearRect(0, 0);
    @assert throws TypeError ctx.clearRect(0, 0, 0);
    @assert throws TypeError ctx.fillRect();
    @assert throws TypeError ctx.fillRect(0);
    @assert throws TypeError ctx.fillRect(0, 0);
    @assert throws TypeError ctx.fillRect(0, 0, 0);
    @assert throws TypeError ctx.strokeRect();
    @assert throws TypeError ctx.strokeRect(0);
    @assert throws TypeError ctx.strokeRect(0, 0);
    @assert throws TypeError ctx.strokeRect(0, 0, 0);
    @assert throws TypeError ctx.moveTo();
    @assert throws TypeError ctx.moveTo(0);
    @assert throws TypeError ctx.lineTo();
    @assert throws TypeError ctx.lineTo(0);
    @assert throws TypeError ctx.quadraticCurveTo();
    @assert throws TypeError ctx.quadraticCurveTo(0);
    @assert throws TypeError ctx.quadraticCurveTo(0, 0);
    @assert throws TypeError ctx.quadraticCurveTo(0, 0, 0);
    @assert throws TypeError ctx.bezierCurveTo();
    @assert throws TypeError ctx.bezierCurveTo(0);
    @assert throws TypeError ctx.bezierCurveTo(0, 0);
    @assert throws TypeError ctx.bezierCurveTo(0, 0, 0);
    @assert throws TypeError ctx.bezierCurveTo(0, 0, 0, 0);
    @assert throws TypeError ctx.bezierCurveTo(0, 0, 0, 0, 0);
    @assert throws TypeError ctx.arcTo();
    @assert throws TypeError ctx.arcTo(0);
    @assert throws TypeError ctx.arcTo(0, 0);
    @assert throws TypeError ctx.arcTo(0, 0, 0);
    @assert throws TypeError ctx.arcTo(0, 0, 0, 0);
    @assert throws TypeError ctx.rect();
    @assert throws TypeError ctx.rect(0);
    @assert throws TypeError ctx.rect(0, 0);
    @assert throws TypeError ctx.rect(0, 0, 0);
    @assert throws TypeError ctx.arc();
    @assert throws TypeError ctx.arc(0);
    @assert throws TypeError ctx.arc(0, 0);
    @assert throws TypeError ctx.arc(0, 0, 1);
    @assert throws TypeError ctx.arc(0, 0, 1, 0);
    @assert throws TypeError ctx.drawImage();
    @assert throws TypeError ctx.drawImage(offscreenCanvas);
    @assert throws TypeError ctx.drawImage(offscreenCanvas, 0);
    // TODO: n >= 3 args on drawImage could be either a valid overload,
    // or too few for another overload, or too many for another
    // overload - what should happen?
    if (ctx.createImageData) {
        @assert throws TypeError ctx.createImageData();
        @assert throws TypeError ctx.createImageData(1);
    }
    if (ctx.getImageData) {
        @assert throws TypeError ctx.getImageData();
        @assert throws TypeError ctx.getImageData(0);
        @assert throws TypeError ctx.getImageData(0, 0);
        @assert throws TypeError ctx.getImageData(0, 0, 1);
    }
    if (ctx.putImageData) {
        var imgdata = ctx.getImageData(0, 0, 1, 1);
        @assert throws TypeError ctx.putImageData();
        @assert throws TypeError ctx.putImageData(imgdata);
        @assert throws TypeError ctx.putImageData(imgdata, 0);
    }
    var g = ctx.createLinearGradient(0, 0, 0, 0);
    @assert throws TypeError g.addColorStop(); @moz-todo
    @assert throws TypeError g.addColorStop(0); @moz-todo

- name: 2d.voidreturn
  desc: void methods return undefined
  code: |
    @assert ctx.save() === undefined;
    @assert ctx.restore() === undefined;
    @assert ctx.scale(1, 1) === undefined;
    @assert ctx.rotate(0) === undefined;
    @assert ctx.translate(0, 0) === undefined;
    if (ctx.transform) { // (avoid spurious failures, since the aim here is not to test that all features are supported)
        @assert ctx.transform(1, 0, 0, 1, 0, 0) === undefined;
    }
    if (ctx.setTransform) {
        @assert ctx.setTransform(1, 0, 0, 1, 0, 0) === undefined;
    }
    @assert ctx.clearRect(0, 0, 0, 0) === undefined;
    @assert ctx.fillRect(0, 0, 0, 0) === undefined;
    @assert ctx.strokeRect(0, 0, 0, 0) === undefined;
    @assert ctx.beginPath() === undefined;
    @assert ctx.closePath() === undefined;
    @assert ctx.moveTo(0, 0) === undefined;
    @assert ctx.lineTo(0, 0) === undefined;
    @assert ctx.quadraticCurveTo(0, 0, 0, 0) === undefined;
    @assert ctx.bezierCurveTo(0, 0, 0, 0, 0, 0) === undefined;
    @assert ctx.arcTo(0, 0, 0, 0, 1) === undefined;
    @assert ctx.rect(0, 0, 0, 0) === undefined;
    @assert ctx.arc(0, 0, 1, 0, 0, true) === undefined;
    @assert ctx.fill() === undefined;
    @assert ctx.stroke() === undefined;
    @assert ctx.clip() === undefined;
    if (ctx.putImageData) {
        @assert ctx.putImageData(ctx.getImageData(0, 0, 1, 1), 0, 0) === undefined;
    }
    @assert ctx.drawImage(offscreenCanvas, 0, 0, 1, 1, 0, 0, 0, 0) === undefined;
    @assert ctx.createLinearGradient(0, 0, 0, 0).addColorStop(0, 'white') === undefined;

- name: 2d.canvas.reference
  desc: canvas refers back to its canvas
  testing:
    - 2d.canvas
  code: |
    @assert ctx.canvas === offscreenCanvas;

- name: 2d.canvas.readonly
  desc: canvas is readonly
  testing:
    - 2d.canvas.attribute
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    var d = ctx.canvas;
    @assert offscreenCanvas2 !== d;
    ctx.canvas = offscreenCanvas2;
    @assert ctx.canvas === d;

- name: 2d.getcontext.exists
  desc: The 2D context is implemented
  testing:
    - context.2d
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert offscreenCanvas2.getContext('2d') !== null;

- name: 2d.getcontext.extraargs
  desc: The 2D context ignores extra getContext arguments
  testing:
    - context.2d.extraargs
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert offscreenCanvas2.getContext('2d', false, {}, [], 1, "2") !== null;

- name: 2d.getcontext.unique
  desc: getContext('2d') returns the same object
  testing:
    - context.unique
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert offscreenCanvas2.getContext('2d') === offscreenCanvas2.getContext('2d');

- name: 2d.getcontext.shared
  desc: getContext('2d') returns objects which share canvas state
  testing:
    - context.unique
  code: |
    var ctx2 = offscreenCanvas.getContext('2d');
    ctx.fillStyle = '#f00';
    ctx2.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: context.emptystring
  desc: getContext with empty string returns null
  testing:
    - context.unrecognised
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert throws TypeError offscreenCanvas2.getContext("");

- name: context.unrecognised.badname
  desc: getContext with unrecognised context name returns null
  testing:
    - context.unrecognised
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert throws TypeError offscreenCanvas2.getContext('This is not an implemented context in any real browser');

- name: context.unrecognised.badsuffix
  desc: Context name "2d" plus a suffix is unrecognised
  testing:
    - context.unrecognised
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert throws TypeError offscreenCanvas2.getContext("2d#");

- name: context.unrecognised.nullsuffix
  desc: Context name "2d" plus a "\0" suffix is unrecognised
  testing:
    - context.unrecognised
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert throws TypeError offscreenCanvas2.getContext("2d\0");

- name: context.unrecognised.unicode
  desc: Context name which kind of looks like "2d" is unrecognised
  testing:
    - context.unrecognised
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert throws TypeError offscreenCanvas2.getContext("2\uFF44");

- name: context.casesensitive
  desc: Context name "2D" is unrecognised; matching is case sensitive
  testing:
    - context.unrecognised
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert throws TypeError offscreenCanvas2.getContext('2D');

- name: context.arguments.missing
  testing:
    - canvas.getContext
  code: |
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    @assert throws TypeError offscreenCanvas2.getContext(); @moz-todo


- name: initial.colour
  desc: Initial state is transparent black
  testing:
    - initial.colour
  code: |
    @assert pixel 20,20 == 0,0,0,0;

- name: initial.reset.different
  desc: Changing size resets canvas to transparent black
  testing:
    - initial.reset
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    @assert pixel 20,20 == 255,0,0,255;
    offscreenCanvas.width = 50;
    @assert pixel 20,20 == 0,0,0,0;

- name: initial.reset.same
  desc: Setting size (not changing the value) resets canvas to transparent black
  testing:
    - initial.reset
  code: |
    offscreenCanvas.width = 100;
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    @assert pixel 20,20 == 255,0,0,255;
    offscreenCanvas.width = 100;
    @assert pixel 20,20 == 0,0,0,0;

- name: initial.reset.path
  desc: Resetting the canvas state resets the current path
  testing:
    - initial.reset
  code: |
    offscreenCanvas.width = 100;
    ctx.rect(0, 0, 100, 50);
    offscreenCanvas.width = 100;
    ctx.fillStyle = '#f00';
    ctx.fill();
    @assert pixel 20,20 == 0,0,0,0;

- name: initial.reset.clip
  desc: Resetting the canvas state resets the current clip region
  testing:
    - initial.reset
  code: |
    offscreenCanvas.width = 100;
    ctx.rect(0, 0, 1, 1);
    ctx.clip();
    offscreenCanvas.width = 100;
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 20,20 == 0,255,0,255;

- name: initial.reset.transform
  desc: Resetting the canvas state resets the current transformation matrix
  testing:
    - initial.reset
  code: |
    offscreenCanvas.width = 100;
    ctx.scale(0.1, 0.1);
    offscreenCanvas.width = 100;
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 20,20 == 0,255,0,255;

- name: initial.reset.gradient
  desc: Resetting the canvas state does not invalidate any existing gradients
  testing:
    - initial.reset
  code: |
    offscreenCanvas.width = 50;
    var g = ctx.createLinearGradient(0, 0, 100, 0);
    g.addColorStop(0, '#0f0');
    g.addColorStop(1, '#0f0');
    offscreenCanvas.width = 100;
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: initial.reset.pattern
  desc: Resetting the canvas state does not invalidate any existing patterns
  testing:
    - initial.reset
  code: |
    offscreenCanvas.width = 30;
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 30, 50);
    var p = ctx.createPattern(offscreenCanvas, 'repeat-x');
    offscreenCanvas.width = 100;
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = p;
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;

- name: size.attributes.idl.set.zero
  desc: Setting width/height IDL attributes to 0
  testing:
    - size.width
    - size.height
  code: |
    offscreenCanvas.width = 0;
    offscreenCanvas.height = 0;
    @assert offscreenCanvas.width === 0;
    @assert offscreenCanvas.height === 0;

- name: size.attributes.idl
  desc: Getting/setting width/height IDL attributes
  testing:
    - size.width
    - size.height
  webidl:
    - es-unsigned-long
  code: |
    offscreenCanvas.width = "100";
    offscreenCanvas.height = "100";
    @assert offscreenCanvas.width === 100;
    @assert offscreenCanvas.height === 100;
    offscreenCanvas.width = "+1.5e2";
    offscreenCanvas.height = "0x96";
    @assert offscreenCanvas.width === 150;
    @assert offscreenCanvas.height === 150;
    offscreenCanvas.width = 301.999;
    offscreenCanvas.height = 301.001;
    @assert offscreenCanvas.width === 301;
    @assert offscreenCanvas.height === 301;
    offscreenCanvas.width = "400x";
    offscreenCanvas.height = "foo";
    @assert offscreenCanvas.width === 0;
    @assert offscreenCanvas.height === 0;

- name: size.attributes.default
  desc: Default width/height when attributes are missing
  testing:
    - size.default
    - size.missing
  code: |
    @assert offscreenCanvas.width === 100;
    @assert offscreenCanvas.height === 50;

- name: size.attributes.reflect.setidl
  desc: Setting IDL attributes updates IDL and content attributes
  testing:
    - size.reflect
  code: |
    offscreenCanvas.width = 120;
    offscreenCanvas.height = 60;
    @assert offscreenCanvas.width === 120;
    @assert offscreenCanvas.height === 60;

- name: size.attributes.reflect.setidlzero
  desc: Setting IDL attributes to 0 updates IDL and content attributes
  testing:
    - size.reflect
  code: |
    offscreenCanvas.width = 0;
    offscreenCanvas.height = 0;
    @assert offscreenCanvas.width === 0;
    @assert offscreenCanvas.height === 0;

- meta: |
    cases = [
        ("zero", "0", 0),
        ("empty", "", None),
        ("onlyspace", "  ", None),
        ("space", "  100", 100),
        ("whitespace", "\t\f100", 100),
        ("plus", "+100", 100),
        ("minus", "-100", None),
        ("octal", "0100", 100),
        ("hex", "0x100", 0x100),
        ("exp", "100e1", 100e1),
        ("decimal", "100.999", 100),
        ("percent", "100%", 100),
        ("em", "100em", 100),
        ("junk", "#!?", None),
        ("trailingjunk", "100#!?", 100),
    ]
    def gen(name, string, exp, code):
        testing = ["size.nonnegativeinteger"]
        if exp is None:
            testing.append("size.error")
            code += "offscreenCanvas.width = '%s';\noffscreenCanvas.height = '%s';\n" % (string, string)
            code += "@assert offscreenCanvas.width === 100;\n@assert offscreenCanvas.height === 50;\n"
            expected = None
        else:
            code += "offscreenCanvas.width = '%s';\noffscreenCanvas.height = '%s';\n" % (string, string)
            code += "@assert offscreenCanvas.width === %s;\n@assert offscreenCanvas.height === %s;\n" % (exp, exp)
            expected = None

        if exp == 0:
            expected = None # can't generate zero-sized PNGs for the expected image

        return code, testing, expected

    for name, string, exp in cases:
        code = ""
        code, testing, expected = gen(name, string, exp, code)
        tests.append( {
            "name": "size.attributes.parse.%s" % name,
            "desc": "Parsing of non-negative integers",
            "testing": testing,
            "code": code,
        } )

- name: size.large
  testing:
    - size.width
    - size.height
  notes: Not sure how reasonable this is, but the spec doesn't say there's an upper limit on the size.
  code: |
    var n = 2147483647; // 2^31 - 1, which should be supported by any sensible definition of "long"
    offscreenCanvas.width = n;
    offscreenCanvas.height = n;
    @assert offscreenCanvas.width === n;
    @assert offscreenCanvas.height === n;

- name: 2d.text.font.parse.basic
  testing:
    - 2d.text.font.parse
    - 2d.text.font.get
  code: |
    ctx.font = '20px serif';
    @assert ctx.font === '20px serif';

    ctx.font = '20PX   SERIF';
    @assert ctx.font === '20px serif'; @moz-todo

- name: 2d.text.font.parse.tiny
  testing:
    - 2d.text.font.parse
    - 2d.text.font.get
  code: |
    ctx.font = '1px sans-serif';
    @assert ctx.font === '1px sans-serif';

- name: 2d.text.font.parse.complex
  testing:
    - 2d.text.font.parse
    - 2d.text.font.get
    - 2d.text.font.lineheight
  code: |
    ctx.font = 'small-caps italic 400 12px/2 Unknown Font, sans-serif';
    @assert ctx.font === 'italic small-caps 12px "Unknown Font", sans-serif'; @moz-todo

  # TODO:
  #   2d.text.font.parse.size.absolute
  #     xx-small x-small small medium large x-large xx-large
  #   2d.text.font.parse.size.relative
  #     smaller larger
  #   2d.text.font.parse.size.length.relative
  #     em ex px
  #   2d.text.font.parse.size.length.absolute
  #     in cm mm pt pc

- name: 2d.text.font.parse.system
  desc: System fonts must be computed to explicit values
  testing:
    - 2d.text.font.parse
    - 2d.text.font.get
    - 2d.text.font.systemfonts
  code: |
    ctx.font = 'message-box';
    @assert ctx.font !== 'message-box';

- name: 2d.text.font.parse.invalid
  testing:
    - 2d.text.font.invalid
  code: |
    ctx.font = '20px serif';
    @assert ctx.font === '20px serif';

    ctx.font = '20px serif';
    ctx.font = 'bogus';
    @assert ctx.font === '20px serif';

    ctx.font = '20px serif';
    ctx.font = 'inherit';
    @assert ctx.font === '20px serif';

    ctx.font = '20px serif';
    ctx.font = '10px {bogus}';
    @assert ctx.font === '20px serif';

    ctx.font = '20px serif';
    ctx.font = '10px initial';
    @assert ctx.font === '20px serif'; @moz-todo

    ctx.font = '20px serif';
    ctx.font = '10px default';
    @assert ctx.font === '20px serif'; @moz-todo

    ctx.font = '20px serif';
    ctx.font = '10px inherit';
    @assert ctx.font === '20px serif';

    ctx.font = '20px serif';
    ctx.font = '1em serif; background: green; margin: 10px';
    @assert ctx.font === '20px serif';

- name: 2d.text.font.default
  testing:
    - 2d.text.font.default
  code: |
    @assert ctx.font === '10px sans-serif';


- name: 2d.text.align.valid
  testing:
    - 2d.text.align.get
    - 2d.text.align.set
  code: |
    ctx.textAlign = 'start';
    @assert ctx.textAlign === 'start';

    ctx.textAlign = 'end';
    @assert ctx.textAlign === 'end';

    ctx.textAlign = 'left';
    @assert ctx.textAlign === 'left';

    ctx.textAlign = 'right';
    @assert ctx.textAlign === 'right';

    ctx.textAlign = 'center';
    @assert ctx.textAlign === 'center';

- name: 2d.text.align.invalid
  testing:
    - 2d.text.align.invalid
  code: |
    ctx.textAlign = 'start';
    ctx.textAlign = 'bogus';
    @assert ctx.textAlign === 'start';

    ctx.textAlign = 'start';
    ctx.textAlign = 'END';
    @assert ctx.textAlign === 'start';

    ctx.textAlign = 'start';
    ctx.textAlign = 'end ';
    @assert ctx.textAlign === 'start';

    ctx.textAlign = 'start';
    ctx.textAlign = 'end\0';
    @assert ctx.textAlign === 'start';

- name: 2d.text.align.default
  testing:
    - 2d.text.align.default
  code: |
    @assert ctx.textAlign === 'start';


- name: 2d.text.baseline.valid
  testing:
    - 2d.text.baseline.get
    - 2d.text.baseline.set
  code: |
    ctx.textBaseline = 'top';
    @assert ctx.textBaseline === 'top';

    ctx.textBaseline = 'hanging';
    @assert ctx.textBaseline === 'hanging';

    ctx.textBaseline = 'middle';
    @assert ctx.textBaseline === 'middle';

    ctx.textBaseline = 'alphabetic';
    @assert ctx.textBaseline === 'alphabetic';

    ctx.textBaseline = 'ideographic';
    @assert ctx.textBaseline === 'ideographic';

    ctx.textBaseline = 'bottom';
    @assert ctx.textBaseline === 'bottom';

- name: 2d.text.baseline.invalid
  testing:
    - 2d.text.baseline.invalid
  code: |
    ctx.textBaseline = 'top';
    ctx.textBaseline = 'bogus';
    @assert ctx.textBaseline === 'top';

    ctx.textBaseline = 'top';
    ctx.textBaseline = 'MIDDLE';
    @assert ctx.textBaseline === 'top';

    ctx.textBaseline = 'top';
    ctx.textBaseline = 'middle ';
    @assert ctx.textBaseline === 'top';

    ctx.textBaseline = 'top';
    ctx.textBaseline = 'middle\0';
    @assert ctx.textBaseline === 'top';

- name: 2d.text.baseline.default
  testing:
    - 2d.text.baseline.default
  code: |
    @assert ctx.textBaseline === 'alphabetic';

- name: 2d.text.draw.fill.basic
  desc: fillText draws filled text
  manual:
  testing:
    - 2d.text.draw
    - 2d.text.draw.fill
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('PASS', 5, 35);
  expected: &passfill |
    size 100 50
    cr.set_source_rgb(0, 0, 0)
    cr.rectangle(0, 0, 100, 50)
    cr.fill()
    cr.set_source_rgb(0, 1, 0)
    cr.select_font_face("Arial")
    cr.set_font_size(35)
    cr.translate(5, 35)
    cr.text_path("PASS")
    cr.fill()

- name: 2d.text.draw.fill.unaffected
  desc: fillText does not start a new path or subpath
  testing:
    - 2d.text.draw.fill
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);

    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);

    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('FAIL', 5, 35);

    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();

    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 5,45 == 0,255,0,255;
  expected: green

- name: 2d.text.draw.fill.rtl
  desc: fillText respects Right-To-Left Override characters
  manual:
  testing:
    - 2d.text.draw
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.strokeStyle = '#f00';
    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('\u202eFAIL \xa0 \xa0 SSAP', 5, 35);
  expected: *passfill

- name: 2d.text.draw.fill.maxWidth.large
  desc: fillText handles maxWidth correctly
  manual:
  testing:
    - 2d.text.draw.maxwidth
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#0f0';
    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('PASS', 5, 35, 200);
  expected: *passfill

- name: 2d.text.draw.fill.maxWidth.small
  desc: fillText handles maxWidth correctly
  testing:
    - 2d.text.draw.maxwidth
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('fail fail fail fail fail', -100, 35, 90);
    _assertGreen(ctx, 100, 50);
  expected: green

- name: 2d.text.draw.fill.maxWidth.zero
  desc: fillText handles maxWidth correctly
  testing:
    - 2d.text.draw.maxwidth
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('fail fail fail fail fail', 5, 35, 0);
    _assertGreen(ctx, 100, 50);
  expected: green

- name: 2d.text.draw.fill.maxWidth.negative
  desc: fillText handles maxWidth correctly
  testing:
    - 2d.text.draw.maxwidth
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('fail fail fail fail fail', 5, 35, -1);
    _assertGreen(ctx, 100, 50);
  expected: green

- name: 2d.text.draw.fill.maxWidth.NaN
  desc: fillText handles maxWidth correctly
  testing:
    - 2d.text.draw.maxwidth
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.font = '35px Arial, sans-serif';
    ctx.fillText('fail fail fail fail fail', 5, 35, NaN);
    _assertGreen(ctx, 100, 50);
  expected: green

- name: 2d.text.draw.stroke.basic
  desc: strokeText draws stroked text
  manual:
  testing:
    - 2d.text.draw
    - 2d.text.draw.stroke
  code: |
    ctx.fillStyle = '#000';
    ctx.fillRect(0, 0, 100, 50);
    ctx.strokeStyle = '#0f0';
    ctx.fillStyle = '#f00';
    ctx.lineWidth = 1;
    ctx.font = '35px Arial, sans-serif';
    ctx.strokeText('PASS', 5, 35);
  expected: |
    size 100 50
    cr.set_source_rgb(0, 0, 0)
    cr.rectangle(0, 0, 100, 50)
    cr.fill()
    cr.set_source_rgb(0, 1, 0)
    cr.select_font_face("Arial")
    cr.set_font_size(35)
    cr.set_line_width(1)
    cr.translate(5, 35)
    cr.text_path("PASS")
    cr.stroke()

- name: 2d.text.draw.stroke.unaffected
  desc: strokeText does not start a new path or subpath
  testing:
    - 2d.text.draw.stroke
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);

    ctx.moveTo(0, 0);
    ctx.lineTo(100, 0);

    ctx.font = '35px Arial, sans-serif';
    ctx.strokeStyle = '#f00';
    ctx.strokeText('FAIL', 5, 35);

    ctx.lineTo(100, 50);
    ctx.lineTo(0, 50);
    ctx.fillStyle = '#0f0';
    ctx.fill();

    @assert pixel 50,25 == 0,255,0,255;
    @assert pixel 5,45 == 0,255,0,255;
  expected: green

- name: 2d.text.draw.kern.consistent
  desc: Stroked and filled text should have exactly the same kerning so it overlaps
  manual:
  testing:
    - 2d.text.draw
  code: |
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.fillStyle = '#f00';
    ctx.strokeStyle = '#0f0';
    ctx.lineWidth = 3;
    ctx.font = '20px Arial, sans-serif';
    ctx.fillText('VAVAVAVAVAVAVA', -50, 25);
    ctx.fillText('ToToToToToToTo', -50, 45);
    ctx.strokeText('VAVAVAVAVAVAVA', -50, 25);
    ctx.strokeText('ToToToToToToTo', -50, 45);
  expected: green

# CanvasTest is:
#   A = (0, 0) to (1em, 0.75em)       (above baseline)
#   B = (0, 0) to (1em, -0.25em)      (below baseline)
#   C = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs above and below
#   D = (0, -0.25em) to (1em, 0.75em) (the em square) plus some Xs left and right
#   E = (0, -0.25em) to (1em, 0.75em) (the em square)
#   space = empty, 1em wide
#
# At 50px, "E" will fill the canvas vertically
# At 67px, "A" will fill the canvas vertically
#
# Ideographic baseline  is 0.125em above alphabetic
# Mathematical baseline is 0.375em above alphabetic
# Hanging baseline      is 0.500em above alphabetic

- name: 2d.text.draw.fill.maxWidth.fontface
  desc: fillText works on @font-face fonts
  testing:
    - 2d.text.draw.maxwidth
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#0f0';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#f00';
        ctx.fillText('EEEE', -50, 37.5, 40);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.fill.maxWidth.bound
  desc: fillText handles maxWidth based on line size, not bounding box size
  testing:
    - 2d.text.draw.maxwidth
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText('DD', 0, 37.5, 100);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.fontface
  testing:
    - 2d.text.font.fontface
  fonts:
    - CanvasTest
  code: |
    ctx.font = '67px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText('AA', 0, 50);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.fontface.repeat
  desc: Draw with the font immediately, then wait a bit until and draw again. (This crashes some version of WebKit.)
  testing:
    - 2d.text.font.fontface
  fonts:
    - CanvasTest
  fonthack: 0
  code: |
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 100, 50);
    ctx.font = '67px CanvasTest';
    ctx.fillStyle = '#0f0';
    ctx.fillText('AA', 0, 50);
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillText('AA', 0, 50);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.fontface.notinpage
  desc: "@font-face fonts should work even if they are not used in the page"
  testing:
    - 2d.text.font.fontface
  fonts:
    - CanvasTest
  fonthack: 0
  code: |
    ctx.font = '67px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText('AA', 0, 50);
        @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
        @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
    }), 500);
  expected: green

- name: 2d.text.draw.baseline.top
  desc: textBaseline top is the top of the em square (not the bounding box)
  testing:
    - 2d.text.baseline.top
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textBaseline = 'top';
        ctx.fillText('CC', 0, 0);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.baseline.bottom
  desc: textBaseline bottom is the bottom of the em square (not the bounding box)
  testing:
    - 2d.text.baseline.bottom
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textBaseline = 'bottom';
        ctx.fillText('CC', 0, 50);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.baseline.middle
  desc: textBaseline middle is the middle of the em square (not the bounding box)
  testing:
    - 2d.text.baseline.middle
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textBaseline = 'middle';
        ctx.fillText('CC', 0, 25);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.baseline.alphabetic
  testing:
    - 2d.text.baseline.alphabetic
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textBaseline = 'alphabetic';
        ctx.fillText('CC', 0, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.baseline.ideographic
  testing:
    - 2d.text.baseline.ideographic
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textBaseline = 'ideographic';
        ctx.fillText('CC', 0, 31.25);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255; @moz-todo
        @assert pixel 95,45 ==~ 0,255,0,255; @moz-todo
    }), 500);
  expected: green

- name: 2d.text.draw.baseline.hanging
  testing:
    - 2d.text.baseline.hanging
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textBaseline = 'hanging';
        ctx.fillText('CC', 0, 12.5);
        @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
        @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.align.left
  desc: textAlign left is the left of the first em square (not the bounding box)
  testing:
    - 2d.text.align.left
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'left';
        ctx.fillText('DD', 0, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.align.right
  desc: textAlign right is the right of the last em square (not the bounding box)
  testing:
    - 2d.text.align.right
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'right';
        ctx.fillText('DD', 100, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.align.start.ltr
  desc: textAlign start with ltr is the left edge
  testing:
    - 2d.text.align.left
  fonts:
    - CanvasTest
  canvas: width="100" height="50" dir="ltr"
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'start';
        ctx.fillText('DD', 0, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.align.start.rtl
  desc: textAlign start with rtl is the right edge
  testing:
    - 2d.text.align.right
    - 2d.text.draw.direction
  fonts:
    - CanvasTest
  canvas: width="100" height="50" dir="rtl"
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'start';
        ctx.fillText('DD', 100, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.align.end.ltr
  desc: textAlign end with ltr is the right edge
  testing:
    - 2d.text.align.right
  fonts:
    - CanvasTest
  canvas: width="100" height="50" dir="ltr"
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'end';
        ctx.fillText('DD', 100, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.align.end.rtl
  desc: textAlign end with rtl is the left edge
  testing:
    - 2d.text.align.left
    - 2d.text.draw.direction
  fonts:
    - CanvasTest
  canvas: width="100" height="50" dir="rtl"
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'end';
        ctx.fillText('DD', 0, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.align.center
  desc: textAlign center is the center of the em squares (not the bounding box)
  testing:
    - 2d.text.align.center
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'center';
        ctx.fillText('DD', 50, 37.5);
        @assert pixel 5,5 ==~ 0,255,0,255;
        @assert pixel 95,5 ==~ 0,255,0,255;
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
        @assert pixel 5,45 ==~ 0,255,0,255;
        @assert pixel 95,45 ==~ 0,255,0,255;
    }), 500);
  expected: green


- name: 2d.text.draw.space.basic
  desc: U+0020 is rendered the correct size (1em wide)
  testing:
    - 2d.text.draw.spaces
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText('E EE', -100, 37.5);
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.space.collapse.space
  desc: Space characters are converted to U+0020, and collapsed (per CSS)
  testing:
    - 2d.text.draw.spaces
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText('E  EE', -100, 37.5);
        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.space.collapse.other
  desc: Space characters are converted to U+0020, and collapsed (per CSS)
  testing:
    - 2d.text.draw.spaces
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText('E \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dEE', -100, 37.5);
        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
    }), 500);
  expected: green

- name: 2d.text.draw.space.collapse.nonspace
  desc: Non-space characters are not converted to U+0020 and collapsed
  testing:
    - 2d.text.draw.spaces
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText('E\x0b EE', -150, 37.5);
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.space.collapse.start
  desc: Space characters at the start of a line are collapsed (per CSS)
  testing:
    - 2d.text.draw.spaces
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.fillText(' EE', 0, 37.5);
        @assert pixel 25,25 ==~ 0,255,0,255; @moz-todo
        @assert pixel 75,25 ==~ 0,255,0,255;
    }), 500);
  expected: green

- name: 2d.text.draw.space.collapse.end
  desc: Space characters at the end of a line are collapsed (per CSS)
  testing:
    - 2d.text.draw.spaces
  fonts:
    - CanvasTest
  code: |
    ctx.font = '50px CanvasTest';
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.fillStyle = '#f00';
        ctx.fillRect(0, 0, 100, 50);
        ctx.fillStyle = '#0f0';
        ctx.textAlign = 'right';
        ctx.fillText('EE ', 100, 37.5);
        @assert pixel 25,25 ==~ 0,255,0,255;
        @assert pixel 75,25 ==~ 0,255,0,255; @moz-todo
    }), 500);
  expected: green

- name: 2d.text.measure.width.basic
  testing:
    - 2d.text.measure
  fonts:
    - CanvasTest
  code: |
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.font = '50px CanvasTest';
        @assert ctx.measureText('A').width === 50;
        @assert ctx.measureText('AA').width === 100;
        @assert ctx.measureText('ABCD').width === 200;

        ctx.font = '100px CanvasTest';
        @assert ctx.measureText('A').width === 100;
    }), 500);

- name: 2d.text.measure.width.empty
  desc: The empty string has zero width
  testing:
    - 2d.text.measure
  fonts:
    - CanvasTest
  code: |
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.font = '50px CanvasTest';
        @assert ctx.measureText("").width === 0;
    }), 500);

- name: 2d.text.measure.width.space
  desc: Space characters are converted to U+0020 and collapsed (per CSS)
  testing:
    - 2d.text.measure.spaces
  fonts:
    - CanvasTest
  code: |
    deferTest();
    step_timeout(t.step_func_done(function () {
        ctx.font = '50px CanvasTest';
        @assert ctx.measureText('A B').width === 150;
        @assert ctx.measureText('A  B').width === 150; @moz-todo
        @assert ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width === 150; @moz-todo
        @assert ctx.measureText('A \x0b B').width >= 200;

        @assert ctx.measureText(' AB').width === 100; @moz-todo
        @assert ctx.measureText('AB ').width === 100; @moz-todo
    }), 500);

# TODO: shadows, alpha, composite, clip