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:   test_tab("about:blank");
michael@0:   test_tab("about:license");
michael@0: }
michael@0: 
michael@0: function test_tab(url) {
michael@0:   let originalTab = gBrowser.selectedTab;
michael@0:   let newTab = gBrowser.addTab(url, {skipAnimation: true});
michael@0:   is(tabIsActive(newTab), false, "newly added " + url + " tab is not active");
michael@0:   is(tabIsActive(originalTab), true, "original tab is active initially");
michael@0: 
michael@0:   gBrowser.selectedTab = newTab;
michael@0:   is(tabIsActive(newTab), true, "newly added " + url + " tab is active after selection");
michael@0:   is(tabIsActive(originalTab), false, "original tab is not active while unselected");
michael@0: 
michael@0:   gBrowser.selectedTab = originalTab;
michael@0:   is(tabIsActive(newTab), false, "newly added " + url + " tab is not active after switch back");
michael@0:   is(tabIsActive(originalTab), true, "original tab is active again after switch back");
michael@0:   
michael@0:   gBrowser.removeTab(newTab);
michael@0: }
michael@0: 
michael@0: function tabIsActive(tab) {
michael@0:   let browser = tab.linkedBrowser;
michael@0:   return browser.docShell.isActive;
michael@0: }