fune/toolkit/content/tests/browser/browser_autoplay_policy_webRTC_permission.js

/**
 * This test is used to ensure site which has granted 'camera' or 'microphone'
 * or 'screen' permission could be allowed to autoplay.
 */
"use strict";

ChromeUtils.import("resource:///modules/SitePermissions.jsm", this);
const VIDEO_PAGE = "https://example.com/browser/toolkit/content/tests/browser/file_empty.html";

add_task(() => {
  return SpecialPowers.pushPrefEnv({"set": [
    ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
    ["media.autoplay.enabled.user-gestures-needed", true],
    ["media.autoplay.block-event.enabled", true],
  ]});
});

async function testAutoplayWebRTCPermission(args) {
  info(`- Starting ${args.name} -`);
  await BrowserTestUtils.withNewTab({
    gBrowser,
    url: VIDEO_PAGE,
  }, async (browser) => {
    SitePermissions.set(browser.currentURI, args.permission, SitePermissions.ALLOW);

    await loadAutoplayVideo(browser, args);
    await checkVideoDidPlay(browser, args);

    // Reset permission.
    SitePermissions.remove(browser.currentURI, args.permission);

    info(`- Finished ${args.name} -`);
  });
}

add_task(async function start_test() {
  await testAutoplayWebRTCPermission({
    name: "Site with camera permission",
    permission: "camera",
    shouldPlay: true,
    mode: "call play",
  });
  await testAutoplayWebRTCPermission({
    name: "Site with microphone permission",
    permission: "microphone",
    shouldPlay: true,
    mode: "call play",
  });
  await testAutoplayWebRTCPermission({
    name: "Site with screen permission",
    permission: "screen",
    shouldPlay: true,
    mode: "call play",
  });
});