/* Any copyright is dedicated to the Public Domain. https://creativecommons.org/publicdomain/zero/1.0/ */ 'use strict'; add_task(async function test_Private_Mode() { await SpecialPowers.pushPrefEnv({ set: [['privacy.userContext.enabled', true]], }); let privateWindow = await BrowserTestUtils.openNewBrowserWindow({ private: true, }); await privateWindow.gZenWorkspaces.promiseInitialized; ok( privateWindow.document.documentElement.hasAttribute('zen-workspace-id'), 'Private window should have a zen-workspace-id attribute' ); await BrowserTestUtils.closeWindow(privateWindow); });