<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1121643
-->
<head>
<title>Test for Bug 1121643</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="/tests/SimpleTest/SpawnTask.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=1121643">Mozilla Bug 1121643</a>
<span id="mono" style="font-family: monospace; font-size: 64px;">M</span>
<span id="sans" style="font-family: sans-serif; font-size: 64px;">M</span>
<span id="serif" style="font-family: serif; font-size: 64px;">M</span>
<div id="content" style="display: none">
</div>
<script class="testbody" type="application/javascript;version=1.7">
/** Test for Bug 1121643 **/
const DOMUtils = SpecialPowers.Cc["@mozilla.org/inspector/dom-utils;1"]
.getService(SpecialPowers.Ci.inIDOMUtils);
// Given an element id, returns the first font face name encountered.
let fontUsed = id => {
let element = document.getElementById(id),
range = document.createRange();
range.selectNode(element);
return DOMUtils.getUsedFontFaces(range).item(0).CSSFamilyName;
}
// A map of the default mono, sans and serif fonts, obtained when
// whitelisting is disabled.
const fonts = { mono : fontUsed("mono"),
sans : fontUsed("sans"),
serif : fontUsed("serif") };
// Set the font whitelist to contain none, some, or all of the
// default mono, sans, and serif fonts. Check that the rendering
// of our three test elements uses only fonts present in the
// whitelist.
let testFontWhitelist = function* (useMono, useSans, useSerif) {
let whitelist = [];
if (useMono) {
whitelist.push(fonts.mono);
}
if (useSans) {
whitelist.push(fonts.sans);
}
if (useSerif) {
whitelist.push(fonts.serif);
}
yield SpecialPowers.pushPrefEnv({"set": [["font.system.whitelist",
whitelist.join(", ")]]});
// If whitelist is empty, then whitelisting is considered disabled
// and all fonts are allowed.
info("font whitelist: " + JSON.stringify(whitelist));
let whitelistEmpty = whitelist.length === 0;
is(useMono || whitelistEmpty, fontUsed("mono") === fonts.mono,
"Correct mono whitelisting state; got " + fontUsed("mono") + ", requested " + fonts.mono);
is(useSans || whitelistEmpty, fontUsed("sans") === fonts.sans,
"Correct sans whitelisting state; got " + fontUsed("sans") + ", requested " + fonts.sans);
is(useSerif || whitelistEmpty, fontUsed("serif") === fonts.serif,
"Correct serif whitelisting state; got " + fontUsed("serif") + ", requested " + fonts.serif);
}
// Run tests to confirm that only whitelisting fonts are present in a
// rendered page. Try turning mono, sans, and serif off and on in
// every combination.
add_task(function* () {
for (let useMono of [false, true]) {
for (let useSans of [false, true]) {
for (let useSerif of [false, true]) {
yield testFontWhitelist(useMono, useSans, useSerif);
}
}
}
});
</script>
</body>
</html>