mozilla-central/dom/media/mediacontrol/tests/browser/browser_media_control_supported_keys.js (file symbol)

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Test Info: Warnings

const PAGE_NON_AUTOPLAY =
const testVideoId = "video";
const sDefaultSupportedKeys = ["focus", "play", "pause", "playpause", "stop"];
add_task(async function setupTestingPref() {
await SpecialPowers.pushPrefEnv({
set: [["media.mediacontrol.testingevents.enabled", true]],
});
});
/**
* Supported media keys are used for indicating what UI button should be shown
* on the virtual control interface. All supported media keys are listed in
* `MediaKey` in `MediaController.webidl`. Some media keys are defined as
* default media keys which are always supported. Otherwise, other media keys
* have to have corresponding action handler on the active media session in
* order to be added to the supported keys.
*/
add_task(async function testDefaultSupportedKeys() {
info(`open media page`);
const tab = await createLoadedTabWrapper(PAGE_NON_AUTOPLAY);
info(`start media`);
await playMedia(tab, testVideoId);
info(`should use default supported keys`);
await supportedKeysShouldEqualTo(tab, sDefaultSupportedKeys);
info(`remove tab`);
await tab.close();
});
add_task(async function testNoActionHandlerBeingSet() {
info(`open media page`);
const tab = await createLoadedTabWrapper(PAGE_NON_AUTOPLAY);
info(`start media`);
await playMedia(tab, testVideoId);
info(`create media session but not set any action handler`);
await setMediaSessionSupportedAction(tab, []);
info(
`should use default supported keys even if ` +
`media session doesn't have any action handler`
);
await supportedKeysShouldEqualTo(tab, sDefaultSupportedKeys);
info(`remove tab`);
await tab.close();
});
add_task(async function testSettingActionsWhichAreAlreadyDefaultKeys() {
info(`open media page`);
const tab = await createLoadedTabWrapper(PAGE_NON_AUTOPLAY);
info(`start media`);
await playMedia(tab, testVideoId);
info(`create media session but not set any action handler`);
await setMediaSessionSupportedAction(tab, ["play", "pause", "stop"]);
info(
`those actions has already been included in default supported keys, so ` +
`the result should still be default supported keys`
);
await supportedKeysShouldEqualTo(tab, sDefaultSupportedKeys);
info(`remove tab`);
await tab.close();
});
add_task(async function testSettingActionsWhichAreNotDefaultKeys() {
info(`open media page`);
const tab = await createLoadedTabWrapper(PAGE_NON_AUTOPLAY);
info(`start media`);
await playMedia(tab, testVideoId);
info(`create media session but not set any action handler`);
let nonDefaultActions = [
"seekbackward",
"seekforward",
"previoustrack",
"nexttrack",
];
await setMediaSessionSupportedAction(tab, nonDefaultActions);
info(
`supported keys should include those actions which are not default supported keys`
);
let expectedKeys = sDefaultSupportedKeys.concat(nonDefaultActions);
await supportedKeysShouldEqualTo(tab, expectedKeys);
info(`remove tab`);
await tab.close();
});
/**
* The following are helper functions.
*/
async function supportedKeysShouldEqualTo(tab, expectedKeys) {
const controller = tab.linkedBrowser.browsingContext.mediaController;
const supportedKeys = controller.supportedKeys;
while (JSON.stringify(expectedKeys) != JSON.stringify(supportedKeys)) {
await new Promise(r => (controller.onsupportedkeyschange = r));
}
for (let idx = 0; idx < expectedKeys.length; idx++) {
is(
supportedKeys[idx],
expectedKeys[idx],
`'${supportedKeys[idx]}' should equal to '${expectedKeys[idx]}'`
);
}
}
function setMediaSessionSupportedAction(tab, actions) {
return SpecialPowers.spawn(tab.linkedBrowser, [actions], actionArr => {
for (let action of actionArr) {
content.navigator.mediaSession.setActionHandler(action, () => {
info(`set '${action}' action handler`);
});
}
});
}