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37 lines
1.2 KiB
HTML
37 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
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<title>OffscreenCanvas test: 2d.imageData.object.readonly</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/canvas-tests.js"></script>
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<h1>2d.imageData.object.readonly</h1>
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<p class="desc">ImageData objects properties are read-only</p>
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<script>
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var t = async_test("ImageData objects properties are read-only");
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t.step(function() {
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var offscreenCanvas = new OffscreenCanvas(100, 50);
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var ctx = offscreenCanvas.getContext('2d');
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var imgdata = ctx.getImageData(0, 0, 10, 10);
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var w = imgdata.width;
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var h = imgdata.height;
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var d = imgdata.data;
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imgdata.width = 123;
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imgdata.height = 123;
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imgdata.data = [100,100,100,100];
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_assertSame(imgdata.width, w, "imgdata.width", "w");
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_assertSame(imgdata.height, h, "imgdata.height", "h");
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_assertSame(imgdata.data, d, "imgdata.data", "d");
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_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
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_assertSame(imgdata.data[1], 0, "imgdata.data[\""+(1)+"\"]", "0");
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_assertSame(imgdata.data[2], 0, "imgdata.data[\""+(2)+"\"]", "0");
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_assertSame(imgdata.data[3], 0, "imgdata.data[\""+(3)+"\"]", "0");
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t.done();
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});
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</script>
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