"use strict"; const PREF = "network.cookie.cookieBehavior"; const PAGE_URL = "http://mochi.test:8888/browser/" + "browser/components/sessionstore/test/browser_1234021_page.html"; const BEHAVIOR_REJECT = 2; add_task(function* test() { yield pushPrefs([PREF, BEHAVIOR_REJECT]); yield BrowserTestUtils.withNewTab({ gBrowser, url: PAGE_URL }, function* handler(aBrowser) { yield TabStateFlusher.flush(aBrowser); ok(true, "Flush didn't time out"); }); });