gfx/tests/mochitest/test_bug509244.html
author ffxbld <ffxbld@mozilla.com>
Thu, 20 Jan 2022 08:14:07 +0000
changeset 675145 01f44eb7977ceb241941e1226014f12e51c071b4
parent 531524 c9c0c6f2eed54a187e124942e53c3660b4cf17d8
permissions -rw-r--r--
No Bug, mozilla-release repo-update remote-settings - a=repo-update r=RyanVM Differential Revision: https://phabricator.services.mozilla.com/D136456

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=509244
-->
<head>
  <title>Test for Bug 509244</title>
  <script 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
SpecialPowers.Services.obs.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>