gecko-dev/layout/style/test/test_priority_preservation.html

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HTML

<!DOCTYPE HTML>
<html>
<head>
<title>Test for property priority preservation</title>
<script type="application/javascript" src="/MochiKit/MochiKit.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>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/**
* Test that priorities are preserved correctly when setProperty is
* called, and during declaration block expansion/compression when other
* properties are manipulated.
*/
var div = document.getElementById("content");
var s = div.style;
s.setProperty("text-decoration", "underline", "");
is(s.getPropertyValue("text-decoration"), "underline",
"text-decoration stored");
is(s.getPropertyPriority("text-decoration"), "",
"text-decoration priority stored");
s.setProperty("z-index", "7", "important");
is(s.getPropertyValue("z-index"), "7",
"z-index stored");
is(s.getPropertyPriority("z-index"), "important",
"z-index priority stored");
s.setProperty("z-index", "3", "");
is(s.getPropertyValue("z-index"), "7",
"z-index not overridden by setting non-important");
is(s.getPropertyPriority("z-index"), "important",
"z-index priority not overridden by setting non-important");
is(s.getPropertyValue("text-decoration"), "underline",
"text-decoration still stored");
is(s.getPropertyPriority("text-decoration"), "",
"text-decoration priority still stored");
s.setProperty("text-decoration", "overline", "");
is(s.getPropertyValue("text-decoration"), "overline",
"text-decoration stored");
is(s.getPropertyPriority("text-decoration"), "",
"text-decoration priority stored");
is(s.getPropertyValue("z-index"), "7",
"z-index still stored");
is(s.getPropertyPriority("z-index"), "important",
"z-index priority still stored");
s.setProperty("text-decoration", "line-through", "important");
is(s.getPropertyValue("text-decoration"), "line-through",
"text-decoration stored at new priority");
is(s.getPropertyPriority("text-decoration"), "important",
"text-decoration priority overridden");
is(s.getPropertyValue("z-index"), "7",
"z-index still stored");
is(s.getPropertyPriority("z-index"), "important",
"z-index priority still stored");
</script>
</pre>
</body>
</html>