gecko-dev/layout/inspector/tests/test_bug557726.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=557726
-->
<head>
<title>Test for Bug 557726</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style id="pseudo-style">
#div1 {
color: blue;
}
#div1:first-letter {
font-weight: bold;
}
#div1:before {
content: '"';
}
#div1:after {
content: '"';
}
#div1:after, #div1:before {
color: red;
}
</style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=557726">Mozilla Bug 557726</a>
<div id="div1">
text with :before, :after, and :first-letter pseudo-elements
</div>
<script type="application/javascript">
/** Test for Bug 557726 **/
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
function getSelectors (rules) {
var styleElement = document.getElementById("pseudo-style");
var selectors = [];
for (var i = 0; i < rules.Count(); i++) {
var rule = rules.GetElementAt(i).QueryInterface(Components.interfaces.nsIDOMCSSStyleRule);
if (rule.parentStyleSheet.ownerNode == styleElement) // no user agent rules
selectors.push(rule.selectorText);
}
return selectors;
}
var domUtils = Components.classes["@mozilla.org/inspector/dom-utils;1"]
.getService(Components.interfaces.inIDOMUtils);
var div = document.getElementById("div1");
/* empty or missing pseudo-element argument */
var selectors = getSelectors(domUtils.getCSSStyleRules(div));
is(selectors.length, 1, "psuedo-element argument should be optional");
is(selectors[0], "#div1", "should only have the non-pseudo element rule");
selectors = getSelectors(domUtils.getCSSStyleRules(div, null));
is(selectors.length, 1, "pseudo-element argument can be null");
is(selectors[0], "#div1", "should only have the non pseudo-element rule");
selectors = getSelectors(domUtils.getCSSStyleRules(div, ""));
is(selectors.length, 1, "pseudo-element argument can be empty string");
is(selectors[0], "#div1", "should only have the non pseudo-element rule");
/* invalid pseudo-element argument */
var rules = domUtils.getCSSStyleRules(div, "not a valid pseudo element");
is(rules, null, "invalid pseudo-element returns no rules list");
/* valid pseudo-element argument */
selectors = getSelectors(domUtils.getCSSStyleRules(div, ":first-letter"));
is(selectors.length, 1, "pseudo-element argument can be used");
is(selectors[0], "#div1:first-letter", "should only have the :first-letter rule");
selectors = getSelectors(domUtils.getCSSStyleRules(div, ":before"));
is(selectors.length, 2, ":before pseudo-element has two matching rules");
isnot(selectors.indexOf("#div1:after, #div1:before"), -1, "fetched rule for :before")
isnot(selectors.indexOf("#div1:before"), -1, "fetched rule for :before")
selectors = getSelectors(domUtils.getCSSStyleRules(div, ":first-line"));
is(selectors.length, 0, "valid pseudo-element but no matching rules");
</script>
</pre>
</body>
</html>