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Test Info:
const PAGE =
function check_audio_pause_state(expectPause) {
var audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
is(audio.paused, expectPause, "The pause state of audio is corret.");
}
function play_audio() {
var audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
audio.play();
return new Promise(resolve => {
audio.onplay = function () {
audio.onplay = null;
ok(true, "Audio starts playing.");
resolve();
};
});
}
add_task(async function setup_test_preference() {
await SpecialPowers.pushPrefEnv({
set: [
["media.useAudioChannelService.testing", true],
["media.block-autoplay-until-in-foreground", true],
],
});
});
/**
* This test is used for testing the visible tab which was not resumed yet.
* If the tab doesn't have any media component, it won't be resumed even it
* has already gone to foreground until we start audio.
*/
add_task(async function media_should_be_able_to_play_in_visible_tab() {
info("- open new background tab, and check tab's media pause state -");
let tab = BrowserTestUtils.addTab(window.gBrowser, PAGE);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
await SpecialPowers.spawn(tab.linkedBrowser, [true], check_audio_pause_state);
info(
"- select tab as foreground tab, and tab's media should still be paused -"
);
await BrowserTestUtils.switchTab(window.gBrowser, tab);
await SpecialPowers.spawn(tab.linkedBrowser, [true], check_audio_pause_state);
info("- start audio in tab -");
await SpecialPowers.spawn(tab.linkedBrowser, [], play_audio);
info("- audio should be playing -");
await waitForTabBlockEvent(tab, false);
await SpecialPowers.spawn(
tab.linkedBrowser,
[false],
check_audio_pause_state
);
info("- remove tab -");
BrowserTestUtils.removeTab(tab);
});