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36 lines
1.4 KiB
HTML
36 lines
1.4 KiB
HTML
<!DOCTYPE HTML>
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<title>Canvas test: 2d.composite.globalAlpha.invalid</title>
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<script src="/MochiKit/MochiKit.js"></script>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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<body>
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<canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
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<script>
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SimpleTest.waitForExplicitFinish();
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MochiKit.DOM.addLoadEvent(function () {
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var canvas = document.getElementById('c');
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var ctx = canvas.getContext('2d');
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ctx.globalAlpha = 0.5;
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var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons
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var _thrown = undefined; try {
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ctx.globalAlpha = Infinity;
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} catch (e) { _thrown = e }; todo(_thrown && _thrown.code == DOMException.NOT_SUPPORTED_ERR, "should throw NOT_SUPPORTED_ERR");
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ok(ctx.globalAlpha == a, "ctx.globalAlpha == a");
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var _thrown = undefined; try {
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ctx.globalAlpha = -Infinity;
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} catch (e) { _thrown = e }; todo(_thrown && _thrown.code == DOMException.NOT_SUPPORTED_ERR, "should throw NOT_SUPPORTED_ERR");
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ok(ctx.globalAlpha == a, "ctx.globalAlpha == a");
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var _thrown = undefined; try {
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ctx.globalAlpha = NaN;
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} catch (e) { _thrown = e }; todo(_thrown && _thrown.code == DOMException.NOT_SUPPORTED_ERR, "should throw NOT_SUPPORTED_ERR");
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ok(ctx.globalAlpha == a, "ctx.globalAlpha == a");
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SimpleTest.finish();
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});
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</script>
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