gfx/tests/mochitest/test_bug509244.html@6474c204b198 (annotated)
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.
| michael@0 | 1 | <!DOCTYPE HTML> |
| michael@0 | 2 | <html> |
| michael@0 | 3 | <!-- |
| michael@0 | 4 | https://bugzilla.mozilla.org/show_bug.cgi?id=509244 |
| michael@0 | 5 | --> |
| michael@0 | 6 | <head> |
| michael@0 | 7 | <title>Test for Bug 509244</title> |
| michael@0 | 8 | <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> |
| michael@0 | 9 | <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> |
| michael@0 | 10 | </head> |
| michael@0 | 11 | <body> |
| michael@0 | 12 | <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=509244">Mozilla Bug 509244</a> |
| michael@0 | 13 | <p id="display">A</p> |
| michael@0 | 14 | <div id="content" style="display: none"> |
| michael@0 | 15 | |
| michael@0 | 16 | </div> |
| michael@0 | 17 | <pre id="test"> |
| michael@0 | 18 | <script type="application/javascript"> |
| michael@0 | 19 | |
| michael@0 | 20 | /** Test for Bug 509244 **/ |
| michael@0 | 21 | |
| michael@0 | 22 | function flush() { document.documentElement.offsetHeight; } |
| michael@0 | 23 | |
| michael@0 | 24 | var text = document.getElementById("display"); |
| michael@0 | 25 | |
| michael@0 | 26 | // layout text, caching monospace font |
| michael@0 | 27 | text.style.fontFamily = "monospace"; |
| michael@0 | 28 | flush(); |
| michael@0 | 29 | // relayout text so that monospace font is no longer used (but cached) |
| michael@0 | 30 | text.style.fontFamily = "sans-serif"; |
| michael@0 | 31 | flush(); |
| michael@0 | 32 | |
| michael@0 | 33 | // flush cache |
| michael@0 | 34 | var os = SpecialPowers.Cc["@mozilla.org/observer-service;1"] |
| michael@0 | 35 | .getService(SpecialPowers.Ci.nsIObserverService); |
| michael@0 | 36 | os.notifyObservers(null, "memory-pressure", "heap-minimize"); |
| michael@0 | 37 | |
| michael@0 | 38 | // reuse font that was flushed from cache |
| michael@0 | 39 | text.style.fontFamily = "monospace"; |
| michael@0 | 40 | flush(); |
| michael@0 | 41 | |
| michael@0 | 42 | ok(true, "not crashed"); |
| michael@0 | 43 | |
| michael@0 | 44 | </script> |
| michael@0 | 45 | </pre> |
| michael@0 | 46 | </body> |
| michael@0 | 47 | </html> |
