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:   let assertNumberOfTabs = function (num, msg) {
michael@0:     is(gBrowser.tabs.length, num, msg);
michael@0:   }
michael@0: 
michael@0:   let assertNumberOfVisibleTabs = function (num, msg) {
michael@0:     is(gBrowser.visibleTabs.length, num, msg);
michael@0:   }
michael@0: 
michael@0:   let assertNumberOfPinnedTabs = function (num, msg) {
michael@0:     is(gBrowser._numPinnedTabs, num, msg);
michael@0:   }
michael@0: 
michael@0:   waitForExplicitFinish();
michael@0: 
michael@0:   // check prerequisites
michael@0:   assertNumberOfTabs(1, "we start off with one tab");
michael@0: 
michael@0:   // setup
michael@0:   let tab = gBrowser.addTab("about:mozilla");
michael@0: 
michael@0:   whenTabIsLoaded(tab, function () {
michael@0:     // hide the newly created tab
michael@0:     assertNumberOfVisibleTabs(2, "there are two visible tabs");
michael@0:     gBrowser.showOnlyTheseTabs([gBrowser.tabs[0]]);
michael@0:     assertNumberOfVisibleTabs(1, "there is one visible tab");
michael@0:     ok(tab.hidden, "newly created tab is now hidden");
michael@0: 
michael@0:     // close and restore hidden tab
michael@0:     gBrowser.removeTab(tab);
michael@0:     tab = ss.undoCloseTab(window, 0);
michael@0: 
michael@0:     // check that everything was restored correctly, clean up and finish
michael@0:     whenTabIsLoaded(tab, function () {
michael@0:       is(tab.linkedBrowser.currentURI.spec, "about:mozilla", "restored tab has correct url");
michael@0: 
michael@0:       gBrowser.removeTab(tab);
michael@0:       finish();
michael@0:     });
michael@0:   });
michael@0: }
michael@0: 
michael@0: function whenTabIsLoaded(tab, callback) {
michael@0:   tab.linkedBrowser.addEventListener("load", function onLoad() {
michael@0:     tab.linkedBrowser.removeEventListener("load", onLoad, true);
michael@0:     callback();
michael@0:   }, true);
michael@0: }