test_bug573255.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=573255

-->

<head>

  <title>Test for Bug 573255</title>

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

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

  <style type="text/css">

  #display:not(.hasSummary) { visibility: hidden }

  </style>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=573255">Mozilla Bug 573255</a>

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

<pre id="test">

<script type="application/javascript">

var p = document.getElementById("display");

var cs = getComputedStyle(p, "");

is(cs.visibility, "hidden", "should be visibility:none since it has no class");

p.className = "hasSummary";

is(cs.visibility, "visible", "changing class attribute should remove visibility:hidden");

</script>

</pre>

</body>

</html>