gfx/tests/mochitest/test_bug509244.html@6474c204b198
gfx/tests/mochitest/test_bug509244.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 <!DOCTYPE HTML>
2 <html>
3 <!--
4 https://bugzilla.mozilla.org/show_bug.cgi?id=509244
5 -->
6 <head>
7 <title>Test for Bug 509244</title>
8 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
9 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
10 </head>
11 <body>
12 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=509244">Mozilla Bug 509244</a>
13 <p id="display">A</p>
14 <div id="content" style="display: none">
16 </div>
17 <pre id="test">
18 <script type="application/javascript">
20 /** Test for Bug 509244 **/
22 function flush() { document.documentElement.offsetHeight; }
24 var text = document.getElementById("display");
26 // layout text, caching monospace font
27 text.style.fontFamily = "monospace";
28 flush();
29 // relayout text so that monospace font is no longer used (but cached)
30 text.style.fontFamily = "sans-serif";
31 flush();
33 // flush cache
34 var os = SpecialPowers.Cc["@mozilla.org/observer-service;1"]
35 .getService(SpecialPowers.Ci.nsIObserverService);
36 os.notifyObservers(null, "memory-pressure", "heap-minimize");
38 // reuse font that was flushed from cache
39 text.style.fontFamily = "monospace";
40 flush();
42 ok(true, "not crashed");
44 </script>
45 </pre>
46 </body>
47 </html>
