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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=478160
-->
<head>
<title>Test for Bug 478160</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style id="style" type="text/css"></style>
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<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=478160">Mozilla Bug 478160</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 478160 **/
var style_element = document.getElementById("style");
var style_text = document.createTextNode("");
style_element.appendChild(style_text);
function test_at_rule(str) {
style_text.data = str;
is(style_element.sheet.cssRules.length, 1,
"should have one rule from " + str);
var ser1 = style_element.sheet.cssRules[0].cssText;
isnot(ser1, "", "should have non-empty rule from " + str);
style_text.data = ser1;
var ser2 = style_element.sheet.cssRules[0].cssText;
is(ser2, ser1, "parse+serialize should be idempotent for " + str);
}
test_at_rule("@namespace 'a b'");
</script>
</pre>
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</html>