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Test Info:

<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<title>Test for Bug 475214</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=475214">Mozilla Bug 475214</a>
<p id="display"></p>
<div id="content">
</div>
<pre id="test">
<script type="application/javascript">
/* Helper copied from property_database.js */
function IsCSSPropertyPrefEnabled(prefName)
{
try {
if (SpecialPowers.getBoolPref(prefName)) {
return true;
}
} catch (ex) {
ok(false, "Failed to look up property-controlling pref '" +
prefName + "' (" + ex + ")");
}
return false;
}
/** Test for Bug 475214 **/
var e = document.getElementById("content");
var s = e.style;
e.style.font = "menu";
is(e.style.cssText, "font: menu;", "serialize system font alone");
is(e.style.font, "menu", "font getter returns value");
e.style.fontFamily = "inherit";
is(e.style.font, "", "font getter should be empty");
e.style.font = "message-box";
is(e.style.cssText, "font: message-box;", "serialize system font alone");
is(e.style.font, "message-box", "font getter returns value");
e.setAttribute("style", "font-weight:bold;font:caption;line-height:3;");
is(e.style.font, "", "font getter should be empty");
e.setAttribute("style", "font: menu; font-weight: -moz-use-system-font");
is(e.style.cssText, "font: menu;", "serialize system font alone");
is(e.style.font, "menu", "font getter returns value");
e.setAttribute("style", "font: inherit; font-family: Helvetica;");
EXPECTED_DECLS = [
"font-family: Helvetica;",
"font-feature-settings: inherit;",
"font-kerning: inherit;",
"font-language-override: inherit;",
"font-size-adjust: inherit;",
"font-size: inherit;",
"font-stretch: inherit;",
"font-style: inherit;",
"font-variant: inherit;",
"font-weight: inherit;",
"line-height: inherit;",
];
if (IsCSSPropertyPrefEnabled("layout.css.font-variations.enabled")) {
EXPECTED_DECLS.push("font-optical-sizing: inherit;");
EXPECTED_DECLS.push("font-variation-settings: inherit;");
}
EXPECTED_DECLS = EXPECTED_DECLS.sort().join(" ");
let sortedDecls = e.style.cssText.split(/ (?=font-|line-)/).sort().join(" ");
is(sortedDecls, EXPECTED_DECLS, "don't serialize system font for font:inherit");
is(e.style.font, "", "font getter returns nothing");
</script>
</pre>
</body>
</html>