LayoutTests/fast/canvas/canvas-large-pattern.html - Issue 57643005: [2D Canvas] Fix crash in createPattern method when using invalid canvas as source.

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Side by Side Diff: LayoutTests/fast/canvas/canvas-large-pattern.html

Issue 57643005: [2D Canvas] Fix crash in createPattern method when using invalid canvas as source. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 7 years, 1 month ago

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	1 <!DOCTYPE HTML>

	2 <html>

	3 <body>

	4 <script src="../js/resources/js-test-pre.js"></script>

	5 <script type="text/javascript">

	6

	7 description("Verifies createPattern using a source image that is a canva s 40k pixels wide.");

	8 // This test does not currently succeed because skia does not handle

	9 // canvases more than 32k pixels wide. For now, this test serves the

	10 // purpose of verifying that this use case does not crash the browser.

	11 // Crasher bug: crbug.com/281504

	12

	13 var canvas = document.createElement('canvas');

	14 canvas.width = 40000;

	15 var context = canvas.getContext('2d');

	16 context.fillStyle = '#0f0';

	17 context.fillRect(0, 0, 1, 1);

	18

	19 var dstCanvas = document.createElement('canvas');

	20 var dstContext = dstCanvas.getContext('2d');

	21 var pattern = dstContext.createPattern(canvas, 'repeat');

	22 dstContext.fillStyle = pattern;

	23 dstContext.fillRect(0, 0, dstCanvas.width, dstCanvas.height);

	24

	25 var imageData = dstContext.getImageData(0, 0, 1, 1);

	26 var imgdata = imageData.data;

	27 shouldBe("imgdata[0]", "0");

	28 shouldBe("imgdata[1]", "255");

	29 shouldBe("imgdata[2]", "0");

	30 shouldBe("imgdata[3]", "255");

	31

	32 imageData = dstContext.getImageData(1, 0, 1, 1);

	33 imgdata = imageData.data;

	34 shouldBe("imgdata[0]", "0");

	35 shouldBe("imgdata[1]", "0");

	36 shouldBe("imgdata[2]", "0");

	37 shouldBe("imgdata[3]", "0");

	38

	39 imageData = dstContext.getImageData(0, 1, 1, 1);

	40 imgdata = imageData.data;

	41 shouldBe("imgdata[0]", "0");

	42 shouldBe("imgdata[1]", "0");

	43 shouldBe("imgdata[2]", "0");

	44 shouldBe("imgdata[3]", "0");

	45 </script>

	46 <script src="../js/resources/js-test-post.js"></script>

	47 </body>

	48 </html>

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