diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_bug633190.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_bug633190.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,86 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+let origTab = gBrowser.visibleTabs[0];
+let contentWindow;
+
+function test() {
+  waitForExplicitFinish();
+
+  test1();
+}
+
+// Open a new tab when the active tab item belongs to a group item.
+function test1() {
+  registerCleanupFunction(function () TabView.hide());
+
+  showTabView(function() {
+    ok(origTab._tabViewTabItem.parent, "The original tab belongs to a group");
+
+    contentWindow = TabView.getContentWindow();
+    contentWindow.UI.setActive(origTab._tabViewTabItem);
+
+    testCreateTabAndThen(test2);
+  });
+}
+
+// Open a new tab when the active tab item is nothing.
+function test2() {
+  showTabView(function() {
+    contentWindow.UI.setActive(null, { onlyRemoveActiveTab: true });
+
+    testCreateTabAndThen(test3);
+  });
+}
+
+// Open a new tab when the active tab item is an orphan tab.
+function test3() {
+  showTabView(function() {
+    let groupItem = origTab._tabViewTabItem.parent;
+    let tabItems = groupItem.getChildren();
+    is(tabItems.length, 3, "There are 3 tab items in the group");
+
+    let lastTabItem = tabItems[tabItems.length - 1];
+    groupItem.remove(lastTabItem);
+
+    let orphanedTabs = contentWindow.GroupItems.getOrphanedTabs();
+    is(orphanedTabs.length, 1, "There should be 1 orphan tab");
+    is(orphanedTabs[0], lastTabItem, "The tab item is the same as the orphan tab");
+
+    contentWindow.UI.setActive(lastTabItem);
+
+    testCreateTabAndThen(function() {
+      hideTabView(finish);
+    });
+  });
+}
+
+function testCreateTabAndThen(callback) {
+  ok(TabView.isVisible(), "Tab View is visible");
+
+  // detect tab open and zoomed in event.
+  let onTabOpen = function(event) {
+    gBrowser.tabContainer.removeEventListener("TabOpen", onTabOpen, false);
+
+    // ensure that the default tabview listener is called before so the 
+    // tab._tabViewTabItem exists
+    executeSoon(function() {
+      let tab = event.target;
+      tabItem = tab._tabViewTabItem;
+      ok(tabItem, "Tab item is available after tab open");
+
+      registerCleanupFunction(function () gBrowser.removeTab(tab))
+
+      tabItem.addSubscriber("zoomedIn", function onZoomedIn() {
+        tabItem.removeSubscriber("zoomedIn", onZoomedIn);
+
+        is(gBrowser.selectedTab, tab,
+          "The selected tab is the same as the newly opened tab");
+        executeSoon(callback);
+      });
+    });
+  }
+  gBrowser.tabContainer.addEventListener("TabOpen", onTabOpen, false);
+  // use the menu item (the same as pressing cmd/ctrl + t)
+  document.getElementById("menu_newNavigatorTab").doCommand();
+}