LayoutTests/fast/canvas/script-tests/canvas-strokeRect.js

description("Series of tests to ensure correct behaviour of canvas.strokeRect()");
var ctx = document.createElement('canvas').getContext('2d');

// stroke rect with solid green
debug("Test canvas.strokeRect() with solid green.");
ctx.beginPath();
ctx.strokeStyle = 'green';
ctx.strokeRect(50, 0, 100, 100, 100);

var imageData = ctx.getImageData(1, 1, 98, 98);
var imgdata = imageData.data;
shouldBe("imgdata[4]", "0");
shouldBe("imgdata[5]", "128");
shouldBe("imgdata[6]", "0");

ctx.clearRect(0, 0, 100, 100);

// stroke rect with a pattern
debug("Test canvas.strokeRect() with a pattern.");
var canvas2 = document.createElement('canvas');
canvas2.width = 100;
canvas2.height = 100;
var ctx2 = canvas2.getContext('2d');
ctx2.fillStyle = 'green';
ctx2.fillRect(0, 0, 100, 100);
var pattern = ctx.createPattern(canvas2, 'repeat');
ctx.strokeStyle = 'pattern';
ctx.strokeRect(50, 0, 100, 100, 100);

imageData = ctx.getImageData(1, 1, 98, 98);
imgdata = imageData.data;
shouldBe("imgdata[4]", "0");
shouldBe("imgdata[5]", "128");
shouldBe("imgdata[6]", "0");

ctx.clearRect(0, 0, 100, 100);

// stroke rect with gradient
debug("Test canvas.strokeRect() with a gradient.");
var gradient = ctx.createLinearGradient(0, 0, 0, 100);
gradient.addColorStop(0, "green");
gradient.addColorStop(1, "green");
ctx.strokeStyle = 'gradient';
ctx.strokeRect(50, 0, 100, 100, 100);

imageData = ctx.getImageData(1, 1, 98, 98);
imgdata = imageData.data;
shouldBe("imgdata[4]", "0");
shouldBe("imgdata[5]", "128");
shouldBe("imgdata[6]", "0");

ctx.clearRect(0, 0, 100, 100);

// stroke rect with height = width = 0 and lineWidth = 2.
debug("Test canvas.strokeRect() with height = width = 0 and lineWidth = 2.");
ctx.strokeStyle = 'red';
ctx.lineWidth = 2;
ctx.strokeRect(0, 0, 0, 0);
imageData = ctx.getImageData(0, 0, 1, 1);
imgdata = imageData.data;
shouldBe("imgdata[0]", "0");
shouldBe("imgdata[1]", "0");
shouldBe("imgdata[2]", "0");

// stroke rect with height = width = 0, lineWidth = 2, and shadow.
debug("Test canvas.strokeRect() with height = width = 0, lineWidth = 2, and shadow.");
ctx.shadowOffsetX = 5;
ctx.shadowOffsetY = 5;
ctx.shadowColor = 'blue';
ctx.strokeStyle = 'red';
ctx.lineWidth = 2;
ctx.strokeRect(0, 0, 0, 0);
imageData = ctx.getImageData(0, 0, 1, 1);
imgdata = imageData.data;
shouldBe("imgdata[0]", "0");
shouldBe("imgdata[1]", "0");
shouldBe("imgdata[2]", "0");