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:   newWindowWithTabView(testTopOfStack, loadTabs);
michael@0: }
michael@0: 
michael@0: function loadTabs (win) {
michael@0:   for (let i = 0; i < 4; i++)
michael@0:     win.gBrowser.loadOneTab('about:blank', {inBackground: false});
michael@0:   win.gBrowser.selectedTab = win.gBrowser.tabs[2];
michael@0: }
michael@0: 
michael@0: function testTopOfStack(win) {
michael@0:   registerCleanupFunction(function () { win.close(); });
michael@0:   let cw = win.TabView.getContentWindow();
michael@0:   let groupItem = cw.GroupItems.getActiveGroupItem();
michael@0:   ok(!groupItem.isStacked(), 'groupItem is not stacked');
michael@0:   groupItem.setSize(150, 150);
michael@0:   groupItem.setUserSize();
michael@0:   ok(groupItem.isStacked(), 'groupItem is now stacked');
michael@0:   ok(groupItem.isTopOfStack(groupItem.getChild(2)),
michael@0:     'the third tab is on top of stack');
michael@0:   finish();
michael@0: }
michael@0: