diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_bug669694.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_bug669694.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function test() {
+  waitForExplicitFinish();
+
+  function onLoad(win) {
+    registerCleanupFunction(function () win.close());
+
+    let tab = win.gBrowser.addTab();
+    win.gBrowser.pinTab(tab);
+  }
+
+  function onShow(win) {
+    let tabs = win.gBrowser.tabs;
+
+    // zoom into normal tab
+    zoomIn(tabs[1], function () {
+      is(win.gBrowser.selectedTab, tabs[1], "normal tab is selected");
+
+      // select app tab
+      win.gBrowser.selectedTab = tabs[0];
+
+      toggleTabView(win, function () {
+        is(win.gBrowser.selectedTab, tabs[0], "app tab is selected");
+        finish();
+      });
+    });
+  }
+
+  newWindowWithTabView(onShow, onLoad);
+}
+
+// ----------
+function zoomIn(tab, callback) {
+  whenTabViewIsHidden(function () {
+    executeSoon(callback);
+  }, tab.ownerDocument.defaultView);
+
+  tab._tabViewTabItem.zoomIn();
+}
+
+// ----------
+function toggleTabView(win, callback) {
+  showTabView(function () {
+    hideTabView(callback, win);
+  }, win);
+}