content/canvas/test/test_canvas_strokeStyle_getter.html

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=587106
-->
<head>
  <title>Test for Bug 587106</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=587106">Mozilla Bug 587106</a>
<p id="display"><canvas id="c"><canvas></p>
<div id="content" style="display: none">
  
</div>
<pre id="test">
<script type="application/javascript">

/** Test for Bug 587106 **/
  var ctx=document.getElementById('c').getContext('2d');
  for (var i = 0; i < 100; ++i) {
    // Skip things that will give different alpha values depending on weird
    // rounding stuff.
    var tentativeAlpha = i / 100 * 255;
    if (Math.abs(tentativeAlpha.toFixed(1) - tentativeAlpha.toFixed(0)) == 0.5) {
      // Skip this one, please!
      continue;
    }
    ctx.strokeStyle = 'rgba(0, 0, 0, ' + (i/100) + ')';
    is(ctx.strokeStyle, 'rgba(0, 0, 0, ' + (i/100) + ')',
       'strokeStyle should match for opacity='+(i/100));
  }

</script>
</pre>
</body>
</html>