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Test Info:
const PAGE =
add_task(async function setup_test_preference() {
await SpecialPowers.pushPrefEnv({
set: [
["media.useAudioChannelService.testing", true],
["media.block-autoplay-until-in-foreground", true],
],
});
});
/**
* When media starts in an unvisited tab, we would delay its playback and resume
* media playback when the tab goes to foreground first time. There are two test
* cases are used to check different situations.
*
* The first one is used to check if the delayed media has been paused before
* the tab goes to foreground. Then, when the tab goes to foreground, media
* should still be paused.
*
* The second one is used to check if the delayed media has been paused, but
* it eventually was started again before the tab goes to foreground. Then, when
* the tab goes to foreground, media should be resumed.
*/
add_task(async function testShouldNotResumePausedMedia() {
info("- open new background tab and wait until it finishes loading -");
const tab = BrowserTestUtils.addTab(window.gBrowser, PAGE);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
info("- play media and then immediately pause it -");
await doPlayThenPauseOnMedia(tab);
info("- show delay media playback icon on tab -");
await waitForTabBlockEvent(tab, true);
info("- selecting tab as foreground tab would resume the tab -");
await BrowserTestUtils.switchTab(window.gBrowser, tab);
info("- resuming tab should dismiss delay autoplay icon -");
await waitForTabBlockEvent(tab, false);
info("- paused media should still be paused -");
await checkAudioPauseState(tab, true /* should be paused */);
info("- paused media won't generate tab playing icon -");
await waitForTabPlayingEvent(tab, false);
info("- remove tab -");
BrowserTestUtils.removeTab(tab);
});
add_task(async function testShouldResumePlayedMedia() {
info("- open new background tab and wait until it finishes loading -");
const tab = BrowserTestUtils.addTab(window.gBrowser, PAGE);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
info("- play media, pause it, then play it again -");
await doPlayPauseThenPlayOnMedia(tab);
info("- show delay media playback icon on tab -");
await waitForTabBlockEvent(tab, true);
info("- select tab as foreground tab -");
await BrowserTestUtils.switchTab(window.gBrowser, tab);
info("- resuming tab should dismiss delay autoplay icon -");
await waitForTabBlockEvent(tab, false);
info("- played media should still be played -");
await checkAudioPauseState(tab, false /* should be played */);
info("- played media would generate tab playing icon -");
await waitForTabPlayingEvent(tab, true);
info("- remove tab -");
BrowserTestUtils.removeTab(tab);
});
/**
* Helper functions.
*/
async function checkAudioPauseState(tab, expectedPaused) {
await SpecialPowers.spawn(
tab.linkedBrowser,
[expectedPaused],
expectedPaused => {
const audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
is(audio.paused, expectedPaused, "The pause state of audio is corret.");
}
);
}
async function doPlayThenPauseOnMedia(tab) {
await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
const audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
audio.play();
audio.pause();
});
}
async function doPlayPauseThenPlayOnMedia(tab) {
await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
const audio = content.document.getElementById("testAudio");
if (!audio) {
ok(false, "Can't get the audio element!");
}
audio.play();
audio.pause();
audio.play();
});
}