Content - 980ef8380f8d7724c5c1cf0efcfe8fbbcdfdf4d7 - ef313da/2dcontext/compositing/2d.composite.globalAlpha.invalid.html

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Tip revision: dc4d765410fee7b5e4b0d638c12e881a806f55a8 authored by Anne van Kesteren on 05 April 2018, 13:53:52 UTC
add scenario from smaug

Tip revision: dc4d765

2d.composite.globalAlpha.invalid.html

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>Canvas test: 2d.composite.globalAlpha.invalid</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/canvas-tests.js"></script>
<link rel="stylesheet" href="/common/canvas-tests.css">
<body class="show_output">

<h1>2d.composite.globalAlpha.invalid</h1>
<p class="desc"></p>


<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>

<ul id="d"></ul>
<script>
var t = async_test("");
_addTest(function(canvas, ctx) {

ctx.globalAlpha = 0.5;
var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons
ctx.globalAlpha = Infinity;
_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
ctx.globalAlpha = -Infinity;
_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
ctx.globalAlpha = NaN;
_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");


});
</script>

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