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const PAGE =
"https://example.com/browser/toolkit/content/tests/browser/file_nonAutoplayAudio.html";
function wait_for_event(browser, event) {
return BrowserTestUtils.waitForEvent(browser, event, false, event => {
is(
event.originalTarget,
browser,
"Event must be dispatched to correct browser."
);
return true;
});
}
function check_audio_volume_and_mute(expectedMute) {
var audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
let expectedVolume = expectedMute ? 0.0 : 1.0;
is(expectedVolume, audio.computedVolume, "Audio's volume is correct!");
is(expectedMute, audio.computedMuted, "Audio's mute state is correct!");
}
function check_audio_pause_state(expectedPauseState) {
var audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
is(audio.paused, expectedPauseState, "Audio is paused.");
}
function play_audio() {
var audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
audio.play();
ok(audio.paused, "Can't play audio, because the tab was still blocked.");
}
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 unblock_icon_should_disapear_after_resume_tab() {
info("- open new background tab -");
let tab = BrowserTestUtils.addTab(window.gBrowser, PAGE);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
info("- audio doesn't be started in beginning -");
await SpecialPowers.spawn(tab.linkedBrowser, [true], check_audio_pause_state);
info("- audio shouldn't be muted -");
await SpecialPowers.spawn(
tab.linkedBrowser,
[false],
check_audio_volume_and_mute
);
info("- tab shouldn't display unblocking icon -");
await waitForTabBlockEvent(tab, false);
info("- mute tab -");
tab.linkedBrowser.mute();
ok(tab.linkedBrowser.audioMuted, "Audio should be muted now");
info("- try to start audio in background tab -");
await SpecialPowers.spawn(tab.linkedBrowser, [], play_audio);
info("- tab should display unblocking icon -");
await waitForTabBlockEvent(tab, true);
info("- select tab as foreground tab -");
await BrowserTestUtils.switchTab(window.gBrowser, tab);
info("- audio shoule be muted, but not be blocked -");
await SpecialPowers.spawn(
tab.linkedBrowser,
[true],
check_audio_volume_and_mute
);
info("- tab should not display unblocking icon -");
await waitForTabBlockEvent(tab, false);
info("- remove tab -");
BrowserTestUtils.removeTab(tab);
});
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