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

61 lines
1.9 KiB
HTML

<!DOCTYPE HTML>
<html>
<!--
Test that frames playing audio get BACKGROUND_PERCEIVABLE priority.
-->
<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();
function runTest() {
var iframe = document.createElement('iframe');
iframe.setAttribute('mozbrowser', true);
iframe.src = 'file_Audio.html';
var childID = null;
expectOnlyOneProcessCreated().then(function(chid) {
childID = chid;
return Promise.all(
[expectPriorityChange(childID, 'FOREGROUND'),
expectMozbrowserEvent(iframe, 'loadend'),
expectMozbrowserEvent(iframe, 'showmodalprompt').then(function(e) {
is(e.detail.message, 'onplay', 'showmodalprompt message');
})]
);
}).then(function() {
// Send the child process into the background. Because it's playing audio,
// it should get priority BACKGROUND_PERCEIVABLE, not vanilla BACKGROUND.
var p = expectPriorityChange(childID, 'BACKGROUND_PERCEIVABLE');
iframe.setVisible(false);
return p;
}).then(function() {
var p = expectPriorityChange(childID, 'FOREGROUND');
iframe.setVisible(true);
return p;
}).then(SimpleTest.finish);
document.body.appendChild(iframe);
}
// This test relies on <audio> elements interacting with the audio channel
// service. This is controled by the media.useAudioChannelService pref.
addEventListener('testready', function() {
SpecialPowers.pushPrefEnv({set: [['media.useAudioChannelService', true]]},
runTest);
});
</script>
</body>
</html>