test_bug524175.html

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<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=524175

-->

<head>

  <title>Test for Bug 524175</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

  <style>

    span::before ::before {}

  </style>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=524175">Mozilla Bug 524175</a>

<p id="display"></p>

<div id="content" style="display: none">

</div>

<pre id="test">

<script type="application/javascript">

/** Test for Bug 524175 **/

is(document.styleSheets[1].cssRules.length, 0, "Shouldn't have parsed that rule");

</script>

</pre>

</body>

</html>