const PAGE = "https://example.com/browser/toolkit/content/tests/browser/file_webAudio.html"; // The tab closing code leaves an uncaught rejection. This test has been // whitelisted until the issue is fixed. if (!gMultiProcessBrowser) { const { PromiseTestUtils } = ChromeUtils.importESModule( "resource://testing-common/PromiseTestUtils.sys.mjs" ); PromiseTestUtils.expectUncaughtRejection(/is no longer, usable/); } add_task(async function setup_test_preference() { await SpecialPowers.pushPrefEnv({ set: [ ["media.useAudioChannelService.testing", true], ["media.block-autoplay-until-in-foreground", true], ], }); }); add_task(async function block_web_audio() { info("- open new background tab -"); let tab = BrowserTestUtils.addTab(window.gBrowser, "about:blank"); BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, PAGE); await BrowserTestUtils.browserLoaded(tab.linkedBrowser); info("- tab should be blocked -"); await waitForTabBlockEvent(tab, true); info("- switch tab -"); await BrowserTestUtils.switchTab(window.gBrowser, tab); info("- tab should be resumed -"); await waitForTabBlockEvent(tab, false); info("- tab should be audible -"); await waitForTabPlayingEvent(tab, true); info("- remove tab -"); BrowserTestUtils.removeTab(tab); });