gecko-dev/content/base/test/test_bug338679.html

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<!DOCTYPE html>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=338679
-->
<head>
<title>Testcase bug 338679</title>
<script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=338679">Mozilla Bug 338679</a>
<div >
<dl>
<dt>Actual result:</dt>
<dd>
<pre id="out" style="width: 20em">
</pre>
</dd>
<dt>Expected result:</dt>
<dd>
<pre>
Previous: width: 20em;
New: width: auto;
</pre>
</dd>
</dl>
</div>
<pre id="test">
<script>
/* This is our event handler function */
function attr_modified(ev) {
$("out").textContent = "Previous:\t" + ev.prevValue + "\nNew:\t\t" + ev.newValue;
is(ev.newValue, "width: auto;", "DOMAttrModified event reports correct newValue");
todo(ev.prevValue == "width: 20em;", "DOMAttrModified event reports correct prevValue");
SimpleTest.finish(); // trigger the end of our test sequence
}
/* Call this to tell SimpleTest to wait for SimpleTest.finish() */
SimpleTest.waitForExplicitFinish();
$("out").addEventListener("DOMAttrModified", attr_modified, false);
$("out").style.width = "auto";
/* End of script, but SimpleTest will keep listening because
we called waitForExplicitFinish() */
</script>
</pre>
</body>
</html>