<html>
<head>
<style>
.fail { color: red; font-weight: bold;}
.pass { color: green; font-weight: bold;}
</style>
<script type="text/javascript">
failed = false;

function debug(msg) {
    var span = document.createElement("span");
    span.innerHTML = msg + '<br>';
    document.getElementById("console").appendChild(span);
}

function pass(msg) {
    debug('<span class="pass">PASS</span> ' + msg + '</span>');
}

function fail(msg) {
    debug('<span class="fail">FAIL</span> ' + msg + '</span>');
    failed = true;
}

function runTest() {
    var canvas = document.getElementById("test");
    var context = canvas.getContext("2d");
    context.fillStyle = '#f00';
    context.fillRect(0, 0, canvas.width, canvas.height);
    try {
        context.fillRect(0, 0, 0, 0);
        pass("called fillRect 0*0 fillRect without throwing an exception.");
    } catch (e) {
        fail("threw exception code " + e.code + " with 0*0 fillRect");       
    }
    try {
        context.fillRect(0, 0, 0.0/1.0, 0.0/1.0);
        pass("called fillRect with Infinity*Infinity fillRect without throwing an exception.");
    } catch (e) {
        fail("threw exception code " + e.code + " with Infinity*Infinity fillRect");       
    }
    try {
        context.fillRect(0, 0, NaN, NaN);
        pass("did not throw exception with NaN*NaN fillRect.");
    } catch (e) {
        fail("threw exception code " + e.code + " on NaN*NaN fillRect.");       
    }
    try {
        context.clearRect(0, 0, 0, 0);
        pass("called clearRect 0*0 clearRect without throwing an exception.");
    } catch (e) {
        fail("threw exception code " + e.code + " with 0*0 clearRect.");       
    }
    try {
        context.clearRect(0, 0, 0.0/1.0, 0.0/1.0);
        pass("called clearRect with Infinity*Infinity clearRect without throwing an exception.");
    } catch (e) {
        fail("threw exception code " + e.code + " with Infinity*Infinity clearRect.");       
    }
    try {
        context.clearRect(0, 0, NaN, NaN);
        pass("did not throw exception with NaN*NaN clearRect.");
    } catch (e) {
        fail("threw exception code " + e.code + " on NaN*NaN clearRect.");       
    }
    try {
        context.rect(0, 0, 0, 0);
        pass("called rect 0*0 rect without throwing an exception.");
    } catch (e) {
        fail("threw exception code " + e.code + " with 0*0 rect.");       
    }
    try {
        context.rect(0, 0, 0.0/1.0, 0.0/1.0);
        pass("called rect with Infinity*Infinity rect without throwing an exception.");
    } catch (e) {
        fail("threw exception code " + e.code + " with Infinity*Infinity rect.");       
    }
    try {
        context.rect(0, 0, NaN, NaN);
        pass("did not throw exception with NaN*NaN rect.");
    } catch (e) {
        fail("threw exception code " + e.code + " on NaN*NaN rect.");       
    }
    try {
        context.fill();
        pass("called fill with an empty path without throwing an exception.");
    } catch (e) {
        fail("threw exception code " + e.code + " on fill with no path.");       
    }
    try {
        context.arc(2, 2, 0, 0, 90, true);
        pass("did not throw exception on arc with zero-length radius");
    } catch (e) {
        fail("threw exception code " + e.code + " on arc with zero-length radius");    
    }
    try {
        context.arc(2, 2, -10, 0, 90, true);
        fail("did not throw exception on arc with negative-length radius");
    } catch (e) {
        pass("threw exception code " + e.code + " on arc with negative-length radius");    
    }
    try {
        context.arc(2, 2, Infinity, 0, 90, true);
        pass("did not throw exception on arc with infinite radius");
    } catch (e) {
        fail("threw exception code " + e.code + " on arc with infinite radius");    
    }
    try {
        context.arc(2, 2, NaN, 0, 90, true);
        pass("did not throw exception on arc with NaN-length radius");
    } catch (e) {
        fail("threw exception code " + e.code + " on arc with NaN-length radius");    
    }
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.arcTo(2, 2, 4, 4, 0);
        pass("did not throw exception on arcTo with zero-length radius");
    } catch (e) {
        fail("threw exception code " + e.code + " on arcTo with zero-length radius");    
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.arcTo(2, 2, 4, 4, -10);
        fail("did not throw exception on arcTo with negative-length radius");
    } catch (e) {
        pass("threw exception code " + e.code + " on arcTo with negative-length radius");    
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.arcTo(2, 2, 4, 4, Infinity);
        pass("did not throw exception on arcTo with infinite radius");
    } catch (e) {
        fail("threw exception code " + e.code + " on arcTo with infinite radius");    
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.arcTo(2, 2, 4, 4, NaN);
        pass("did not throw exception on arcTo with NaN-length radius");
    } catch (e) {
        fail("threw exception code " + e.code + " on arcTo with NaN-length radius");    
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.lineTo(Infinity, Infinity);
        pass("did not throw exception on lineTo(Infinity, Infinity).");
    } catch (e) {
        fail("threw exception code " + e.code + " on lineTo(Infinity, Infinity).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.lineTo(Infinity, 20);
        pass("did not throw exception on lineTo(Infinity, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on lineTo(Infinity, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.lineTo(20, Infinity);
        pass("did not throw exception on lineTo(20, Infinity).");
    } catch (e) {
        fail("threw exception code " + e.code + " on lineTo(20, Infinity).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.lineTo(NaN, NaN);
        pass("did not throw exception on lineTo(NaN, NaN).");
    } catch (e) {
        fail("threw exception code " + e.code + " on lineTo(NaN, NaN).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.lineTo(20, NaN);
        pass("did not throw exception on lineTo(20, NaN).");
    } catch (e) {
        fail("threw exception code " + e.code + " on lineTo(20, NaN).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.lineTo(NaN, 20);
        pass("did not throw exception on lineTo(NaN, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on lineTo(NaN, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, 20, Infinity, Infinity);
        pass("did not throw exception on quadraticCurveTo(20, 20, Infinity, Infinity).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, 20, Infinity, Infinity).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(Infinity, Infinity, 20, 20);
        pass("did not throw exception on quadraticCurveTo(Infinity, Infinity, 20, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(Infinity, Infinity, 20, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(Infinity, 20, 20, 20);
        pass("did not throw exception on quadraticCurveTo(Infinity, 20, 20, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(Infinity, 20, 20, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, Infinity, 20, 20);
        pass("did not throw exception on quadraticCurveTo(20, Infinity, 20, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, Infinity, 20, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, 20, Infinity, 20);
        pass("did not throw exception on quadraticCurveTo(20, 20, Infinity, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, 20, Infinity, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, 20, 20, Infinity);
        pass("did not throw exception on quadraticCurveTo(20, 20, 20, Infinity).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, 20, 20, Infinity).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, 20, NaN, NaN);
        pass("did not throw exception on quadraticCurveTo(20, 20, NaN, NaN).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, 20, NaN, NaN).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(NaN, NaN, 20, 20);
        pass("did not throw exception on quadraticCurveTo(NaN, NaN, 20, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(NaN, NaN, 20, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(NaN, 20, 20, 20);
        pass("did not throw exception on quadraticCurveTo(NaN, 20, 20, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(NaN, 20, 20, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, NaN, 20, 20);
        pass("did not throw exception on quadraticCurveTo(20, NaN, 20, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, NaN, 20, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, 20, NaN, 20);
        pass("did not throw exception on quadraticCurveTo(20, 20, Nan, 20).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, 20, NaN, 20).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.quadraticCurveTo(20, 20, 20, NaN);
        pass("did not throw exception on quadraticCurveTo(20, 20, 20, NaN).");
    } catch (e) {
        fail("threw exception code " + e.code + " on quadraticCurveTo(20, 20, 20, NaN).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, 30, Infinity, Infinity);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, 30, Infinity, Infinity).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, 30, Infinity, Infinity).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, 30, 30, Infinity);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, 30, 30, Infinity).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, 30, 30, Infinity).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, 30, Infinity, 30);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, 30, Infinity, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, 30, Infinity, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, Infinity, Infinity, 30, 30);
        pass("did not throw exception on bezierCurveTo(20, 20, Infinity, Infinity, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, Infinity, Infinity, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, Infinity, 30, 30);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, Infinity, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, Infinity, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, Infinity, 30, 30, 30);
        pass("did not throw exception on bezierCurveTo(20, 20, Infinity, 30, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, Infinity, 30, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(Infinity, Infinity, 20, 20, 30, 30);
        pass("did not throw exception on bezierCurveTo(Infinity, Infinity, 20, 20, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(Infinity, Infinity, 20, 20, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(30, Infinity, 20, 20, 30, 30);
        pass("did not throw exception on bezierCurveTo(30, Infinity, 20, 20, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(30, Infinity, 20, 20, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(Infinity, 30, 20, 20, 30, 30);
        pass("did not throw exception on bezierCurveTo(Infinity, 30, 20, 20, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(Infinity, 30, 20, 20, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, 30, NaN, NaN);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, 30, NaN, NaN).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, 30, NaN, NaN).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, 30, 0, NaN);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, 30, 0, NaN).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, 30, 0, NaN).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, 30, NaN, 0);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, 30, NaN, 0).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, 30, NaN, 0).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, NaN, NaN, 30, 30);
        pass("did not throw exception on bezierCurveTo(20, 20, NaN, NaN, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, NaN, NaN, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, 30, NaN, 30, 30);
        pass("did not throw exception on bezierCurveTo(20, 20, 30, NaN, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, 30, NaN, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, 20, NaN, 30, 30, 30);
        pass("did not throw exception on bezierCurveTo(20, 20, NaN, 30, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, 20, NaN, 30, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(NaN, NaN, 20, 20, 30, 30);
        pass("did not throw exception on bezierCurveTo(NaN, NaN, 20, 20, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(NaN, NaN, 20, 20, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(20, NaN, 20, 20, 30, 30);
        pass("did not throw exception on bezierCurveTo(20, NaN, 20, 20, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(20, NaN, 20, 20, 30, 30).");       
    }
    context.closePath();
    context.beginPath();
    try {
        context.moveTo(10, 10);
        context.bezierCurveTo(NaN, 20, 20, 20, 30, 30);
        pass("did not throw exception on bezierCurveTo(NaN, 20, 20, 20, 30, 30).");
    } catch (e) {
        fail("threw exception code " + e.code + " on bezierCurveTo(NaN, 20, 20, 20, 30, 30).");       
    }
    context.closePath();

    var canvas2 = document.createElement('canvas');
    canvas2.width = 0;
    canvas2.height = 0;
    try {
        var pattern = ctx.createPattern(canvas2, 'repeat');
        fail("did not throw exception on createPattern with 0x0 canvas.")
    } catch (e) {
        pass("threw exception code " + e.code + " on createPattern with 0x0 canvas.")
    }
    if (!failed) {
        context.fillStyle = '#0f0';
        context.fillRect(0, 0, canvas.width, canvas.height);
    }
    if (window.testRunner)
        testRunner.dumpAsText();
}
</script>
<title>Canvas test of doom</title>
</head>
<body onload="runTest()">
<canvas id="test" width="100" height="100"></canvas><br />
<pre id="console">
This tests the behaviour of a number of the DOM Canvas drawing methods when
given 0, Infinity, or NaN as parameters.

</pre>

</body>
</html>