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60 lines
2.0 KiB
HTML
60 lines
2.0 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=517056
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-->
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<head>
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<title>Test for Bug 517056</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=517056">Mozilla Bug 517056</a>
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<p id="display">
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<canvas id="c" width="1" height="1"></canvas>
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</p>
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<div id="content" style="display: none">
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</div>
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<pre id="test">
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<script type="application/javascript">
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/** Test for Bug 517056 **/
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var ctx = $("c").getContext('2d');
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ctx.fillStyle = "black";
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ctx.fillRect(0, 0, 1, 1);
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var data = ctx.getImageData(0, 0, 1, 1).data;
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is(data[0], 0, "Red channel of black should be 0");
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is(data[1], 0, "Green channel of black should be 0");
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is(data[2], 0, "Blue channel of black should be 0")
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is(data[3], 255, "Alpha channel of black should be opaque");
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var img = new Image();
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// Force a new URI every time, so that we don't run into stupid caching issues.
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img.src = "image_green-1x1.png?" + (new Date + 0) + Math.random();
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// This shouldn't throw
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ctx.drawImage(img, 0, 0);
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var data = ctx.getImageData(0, 0, 1, 1).data;
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is(data[0], 0, "Red channel of black should be 0 and image should have been ignored");
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is(data[1], 0, "Green channel of black should be 0 and image should have been ignored");
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is(data[2], 0, "Blue channel of black should be 0 and image should have been ignored")
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is(data[3], 255, "Alpha channel of black should be opaque and image should have been ignored");
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SimpleTest.waitForExplicitFinish();
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img.onload = function() {
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ctx.drawImage(img, 0, 0);
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var data = ctx.getImageData(0, 0, 1, 1).data;
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is(data[0], 0, "Red channel of green should be 0");
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is(data[1], 255, "Green channel of green should be 255");
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is(data[2], 0, "Blue channel of green should be 0")
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is(data[3], 255, "Alpha channel of green should be opaque");
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SimpleTest.finish();
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}
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</script>
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</pre>
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</body>
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</html>
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