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<!DOCTYPE HTML>
<html>
<head>
<title>Test that preffed off properties do not appear in computed style</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=919594">Mozilla Bug 919594</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/** Test that preffed off properties do not appear in computed style **/
function testWithAllPrefsDisabled() {
let exposedProperties = Object.keys(gCS).map(i => gCS[i]);
// Store the number of properties for later tests to use.
gLengthWithAllPrefsDisabled = gCS.length;
// Check that all of the properties behind the prefs are not exposed.
for (let pref in gProps) {
for (let prop of gProps[pref]) {
ok(!exposedProperties.includes(prop), prop + " not exposed when prefs are false");
}
}
}
function testWithOnePrefEnabled(aPref) {
let exposedProperties = Object.keys(gCS).map(i => gCS[i]);
// Check that the number of properties on the object is as expected.
is(gCS.length, gLengthWithAllPrefsDisabled + gProps[aPref].length, "length when " + aPref + " is true");
// Check that the properties corresponding to aPref are exposed.
for (let prop of gProps[aPref]) {
ok(exposedProperties.includes(prop), prop + " exposed when " + aPref + " is true");
}
}
function step() {
if (gTestIndex == gTests.length) {
// Reached the end of the tests.
SimpleTest.finish();
return;
}
if (gPrefsPushed) {
// We've just finished running one tests. Pop the prefs and go on to
// the next test.
gTestIndex++;
gPrefsPushed = false;
SpecialPowers.popPrefEnv(step);
return;
}
// About to run one test. Push the prefs and run it.
let fn = gTests[gTestIndex].fn;
gPrefsPushed = true;
SpecialPowers.pushPrefEnv(gTests[gTestIndex].settings,
function() { fn(); SimpleTest.executeSoon(step); });
}
// ----
var gProps = {
"layout.css.backdrop-filter.enabled": ["backdrop-filter"],
};
var gCS = getComputedStyle(document.body, "");
var gLengthWithAllPrefsDisabled;
var gTestIndex = 0;
var gPrefsPushed = false;
var gTests = [
// First, test when all of the prefs are disabled.
{ settings: { set: Object.keys(gProps).map(x => [x, false]) },
fn: testWithAllPrefsDisabled },
// Then, test each pref enabled individually.
...Object.keys(gProps).map(p =>
({ settings: { set: Object.keys(gProps).map(x => [x, x == p]) },
fn: testWithOnePrefEnabled.bind(null, p) }))
];
SimpleTest.waitForExplicitFinish();
step();
</script>
</pre>
</body>
</html>
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