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Test Info:
/* eslint-disable mozilla/no-arbitrary-setTimeout */
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_not_in_tree_audio() {
var audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
content.document.body.removeChild(audio);
// Add timeout to ensure the audio is removed from DOM tree.
content.setTimeout(function () {
info("Prepare to start playing audio.");
audio.play();
}, 1000);
}
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_not_in_tree_media() {
info("- open new background tab -");
let tab = BrowserTestUtils.addTab(window.gBrowser, PAGE);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
info("- tab should not be blocked -");
await waitForTabBlockEvent(tab, false);
info("- check audio's playing state -");
await SpecialPowers.spawn(tab.linkedBrowser, [true], check_audio_pause_state);
info("- playing audio -");
await SpecialPowers.spawn(tab.linkedBrowser, [], play_not_in_tree_audio);
info("- tab should be blocked -");
await waitForTabBlockEvent(tab, true);
info("- switch tab -");
await BrowserTestUtils.switchTab(window.gBrowser, tab);
info("- tab should be resumed -");
await waitForTabBlockEvent(tab, false);
info("- tab should be audible -");
await waitForTabPlayingEvent(tab, true);
info("- remove tab -");
BrowserTestUtils.removeTab(tab);
});