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Test Info:
const PAGE = GetTestWebBasedURL("file_mediaPlayback2.html");
const FRAME = GetTestWebBasedURL("file_mediaPlaybackFrame2.html");
function wait_for_event(browser, event) {
return BrowserTestUtils.waitForEvent(browser, event, false, e => {
is(
e.originalTarget,
browser,
"Event must be dispatched to correct browser."
);
return true;
});
}
function test_audio_in_browser() {
function get_audio_element() {
var doc = content.document;
var list = doc.getElementsByTagName("audio");
if (list.length == 1) {
return list[0];
}
// iframe?
list = doc.getElementsByTagName("iframe");
var iframe = list[0];
list = iframe.contentDocument.getElementsByTagName("audio");
return list[0];
}
var audio = get_audio_element();
return {
computedVolume: audio.computedVolume,
computedMuted: audio.computedMuted,
};
}
async function test_on_browser(url, browser) {
BrowserTestUtils.startLoadingURIString(browser, url);
await wait_for_event(browser, "DOMAudioPlaybackStarted");
var result = await SpecialPowers.spawn(browser, [], test_audio_in_browser);
is(result.computedVolume, 1, "Audio volume is 1");
is(result.computedMuted, false, "Audio is not muted");
ok(!browser.audioMuted, "Audio should not be muted by default");
browser.mute();
ok(browser.audioMuted, "Audio should be muted now");
await wait_for_event(browser, "DOMAudioPlaybackStopped");
result = await SpecialPowers.spawn(browser, [], test_audio_in_browser);
is(result.computedVolume, 0, "Audio volume is 0 when muted");
is(result.computedMuted, true, "Audio is muted");
}
async function test_visibility(url, browser) {
BrowserTestUtils.startLoadingURIString(browser, url);
await wait_for_event(browser, "DOMAudioPlaybackStarted");
var result = await SpecialPowers.spawn(browser, [], test_audio_in_browser);
is(result.computedVolume, 1, "Audio volume is 1");
is(result.computedMuted, false, "Audio is not muted");
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: "about:blank",
},
function () {}
);
ok(!browser.audioMuted, "Audio should not be muted by default");
browser.mute();
ok(browser.audioMuted, "Audio should be muted now");
await wait_for_event(browser, "DOMAudioPlaybackStopped");
result = await SpecialPowers.spawn(browser, [], test_audio_in_browser);
is(result.computedVolume, 0, "Audio volume is 0 when muted");
is(result.computedMuted, true, "Audio is muted");
}
add_task(async function () {
await SpecialPowers.pushPrefEnv({
set: [["media.useAudioChannelService.testing", true]],
});
});
add_task(async function test_page() {
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: "about:blank",
},
test_on_browser.bind(undefined, PAGE)
);
});
add_task(async function test_frame() {
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: "about:blank",
},
test_on_browser.bind(undefined, FRAME)
);
});
add_task(async function test_frame() {
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: "about:blank",
},
test_visibility.bind(undefined, PAGE)
);
});