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Test Info:
/* eslint-disable mozilla/no-arbitrary-setTimeout */
const PAGE =
function check_autoplay_audio_onplay() {
let autoPlay = content.document.getElementById("autoplay");
if (!autoPlay) {
ok(false, "Can't get the audio element!");
}
return new Promise((resolve, reject) => {
autoPlay.onplay = () => {
ok(false, "Should not receive play event!");
this.onplay = null;
reject();
};
autoPlay.pause();
autoPlay.play();
content.setTimeout(() => {
ok(true, "Doesn't receive play event when media was blocked.");
autoPlay.onplay = null;
resolve();
}, 1000);
});
}
function play_nonautoplay_audio_should_be_blocked() {
let nonAutoPlay = content.document.getElementById("nonautoplay");
if (!nonAutoPlay) {
ok(false, "Can't get the audio element!");
}
nonAutoPlay.play();
ok(nonAutoPlay.paused, "The blocked audio can't be playback.");
}
add_task(async function setup_test_preference() {
await SpecialPowers.pushPrefEnv({
set: [
["media.useAudioChannelService.testing", true],
["media.block-autoplay-until-in-foreground", true],
],
});
});
add_task(async function block_multiple_media() {
info("- open new background tab -");
let tab = BrowserTestUtils.addTab(window.gBrowser, "about:blank");
let browser = tab.linkedBrowser;
BrowserTestUtils.startLoadingURIString(browser, PAGE);
await BrowserTestUtils.browserLoaded(browser);
info("- tab should be blocked -");
await waitForTabBlockEvent(tab, true);
info("- autoplay media should be blocked -");
await SpecialPowers.spawn(browser, [], check_autoplay_audio_onplay);
info("- non-autoplay can't start playback when the tab is blocked -");
await SpecialPowers.spawn(
browser,
[],
play_nonautoplay_audio_should_be_blocked
);
info("- select tab as foreground tab -");
await BrowserTestUtils.switchTab(window.gBrowser, tab);
info("- tab should be resumed -");
await waitForTabPlayingEvent(tab, true);
await waitForTabBlockEvent(tab, false);
info("- remove tab -");
BrowserTestUtils.removeTab(tab);
});