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Test for bug 509244

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This commit is contained in:
Karl Tomlinson 2009-11-02 16:35:20 +13:00
parent 5b37c7cce2
commit 7efb83c660
1 changed files with 49 additions and 0 deletions
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gfx/thebes/mochitest/test_bug509244.html Normal file
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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=509244
-->
<head>
<title>Test for Bug 509244</title>
<script type="application/javascript" src="/MochiKit/packed.js"></script>
<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=509244">Mozilla Bug 509244</a>
<p id="display">A</p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 509244 **/
function flush() { document.documentElement.offsetHeight; }
var text = document.getElementById("display");
// layout text, caching monospace font
text.style.fontFamily = "monospace";
flush();
// relayout text so that monospace font is no longer used (but cached)
text.style.fontFamily = "sans-serif";
flush();
// flush cache
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
os.notifyObservers(null, "memory-pressure", "heap-minimize");
// reuse font that was flushed from cache
text.style.fontFamily = "monospace";
flush();
ok(true, "not crashed");
</script>
</pre>
</body>
</html>