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Test Info:
"use strict";
/**
* This test aims to ensure that the MFCDM process won't be recovered once the
* amount of crashes has exceeded the amount of value which we tolerate.
*/
add_task(async function setupTestingPref() {
await SpecialPowers.pushPrefEnv({
set: [
["media.wmf.media-engine.enabled", 1],
["media.wmf.media-engine.channel-decoder.enabled", true],
],
});
});
const VIDEO_PAGE = GetTestWebBasedURL("file_video.html");
add_task(async function testPlaybackRecoveryFromCrash() {
const maxCrashes = Services.prefs.getIntPref(
"media.wmf.media-engine.max-crashes"
);
info(`The amount of tolerable crashes=${maxCrashes}`);
info(`Create a tab and load test page`);
let tab = await BrowserTestUtils.openNewForegroundTab(
window.gBrowser,
"about:blank"
);
BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, VIDEO_PAGE);
await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
await playVideo(tab);
info("Ensure video is running via the media engine framework");
await assertRunningProcessAndDecoderName(tab, {
expectedProcess: "Utility MF Media Engine CDM",
expectedDecoder: "media engine video stream",
});
let pidBeforeCrash, pidAfterCrash;
for (let idx = 0; idx < maxCrashes; idx++) {
pidBeforeCrash = await getMFCDMProcessId();
await crashUtilityProcess(pidBeforeCrash);
info("The CDM process should be recreated which makes media keep playing");
await assertRunningProcessAndDecoderName(tab, {
expectedProcess: "Utility MF Media Engine CDM",
expectedDecoder: "media engine video stream",
});
pidAfterCrash = await getMFCDMProcessId();
isnot(
pidBeforeCrash,
pidAfterCrash,
`new process ${pidAfterCrash} is not previous crashed one ${pidBeforeCrash}`
);
}
info("This crash should result in not spawning MFCDM process again");
pidBeforeCrash = await getMFCDMProcessId();
await crashUtilityProcess(pidBeforeCrash);
await assertNotEqualRunningProcessAndDecoderName(tab, {
givenProcess: "Utility MF Media Engine CDM",
givenDecoder: "media engine video stream",
});
BrowserTestUtils.removeTab(tab);
});