gecko/dom/browser-element/mochitest/priority/test_Preallocated.html

80 lines
2.0 KiB
HTML

<!DOCTYPE HTML>
<html>
<!--
Test that the preallocated process starts up with priority BACKGROUND.
-->
<head>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="../browserElementTestHelpers.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<script type="application/javascript;version=1.7">
"use strict";
SimpleTest.waitForExplicitFinish();
browserElementTestHelpers.setEnabledPref(true);
browserElementTestHelpers.addPermission();
browserElementTestHelpers.enableProcessPriorityManager();
var preallocationEnabledPref = null;
try {
preallocationEnabledPref = SpecialPowers.getBoolPref('dom.ipc.processPrelaunch.enabled');
}
catch(e) {
preallocationEnabledPref = null;
}
var childID = null;
var cleanedUp = false;
function cleanUp()
{
if (cleanedUp) {
return;
}
cleanedUp = true;
if (preallocationEnabledPref === null) {
SpecialPowers.clearUserPref('dom.ipc.processPrelaunch.enabled');
} else {
SpecialPowers.setBoolPref('dom.ipc.processPrelaunch.enabled',
preallocationEnabledPref);
}
}
// Even if this test times out, we still want to run cleanUp so as to set the
// pref back.
addEventListener('unload', cleanUp);
function runTest()
{
if (preallocationEnabledPref) {
ok(false, "dom.ipc.processPrelaunch.enabled must be " +
"false for this test to work.");
SimpleTest.finish();
return;
}
// Ensure that the preallocated process initially gets BACKGROUND priority.
// That's it.
expectProcessCreated('PREALLOC', 'CPU_LOW').then(function() {
// We need to set the pref asynchoronously or the preallocated process won't
// be shut down.
SimpleTest.executeSoon(function(){
cleanUp();
SimpleTest.finish();
});
});
// Setting this pref to true should cause us to prelaunch a process.
SpecialPowers.setBoolPref('dom.ipc.processPrelaunch.enabled', true);
}
addEventListener('testready', runTest);
</script>
</body>
</html>