michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: function test() {
michael@0:   waitForExplicitFinish();
michael@0:   BrowserOpenTab();
michael@0: 
michael@0:   let tab = gBrowser.selectedTab;
michael@0:   let browser = tab.linkedBrowser;
michael@0: 
michael@0:   registerCleanupFunction(function () { gBrowser.removeTab(tab); });
michael@0: 
michael@0:   whenBrowserLoaded(browser, function () {
michael@0:     browser.loadURI("http://example.com/");
michael@0: 
michael@0:     whenBrowserLoaded(browser, function () {
michael@0:       ok(!gBrowser.canGoBack, "about:newtab wasn't added to the session history");
michael@0:       finish();
michael@0:     });
michael@0:   });
michael@0: }
michael@0: 
michael@0: function whenBrowserLoaded(aBrowser, aCallback) {
michael@0:   if (aBrowser.contentDocument.readyState == "complete") {
michael@0:     executeSoon(aCallback);
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   aBrowser.addEventListener("load", function onLoad() {
michael@0:     aBrowser.removeEventListener("load", onLoad, true);
michael@0:     executeSoon(aCallback);
michael@0:   }, true);
michael@0: }