diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_bug678374.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_bug678374.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const ICON_URL = "moz-anno:favicon:http://example.com/browser/browser/components/tabview/test/test_bug678374_icon16.png";
+const TEST_URL = "http://example.com/browser/browser/components/tabview/test/test_bug678374.html";
+
+function test() {
+  Services.prefs.setBoolPref("browser.chrome.favicons", false);
+
+  waitForExplicitFinish();
+
+  newWindowWithTabView(function(win) {
+    is(win.gBrowser.tabs.length, 3, "There are 3 tabs")
+
+    let newTabOne = win.gBrowser.tabs[1];
+    let newTabTwo = win.gBrowser.tabs[2];
+    let cw = win.TabView.getContentWindow();
+    let groupItem = cw.GroupItems.groupItems[0];
+
+    // test tab item
+    let newTabItemOne = newTabOne._tabViewTabItem;
+
+    newTabItemOne.addSubscriber("iconUpdated", function onIconUpdated() {
+      newTabItemOne.removeSubscriber("iconUpdated", onIconUpdated);
+      is(newTabItemOne.$favImage[0].src, ICON_URL, "The tab item is showing the right icon.");
+
+      // test pin tab
+      whenAppTabIconAdded(groupItem, function() {
+        let icon = cw.iQ(".appTabIcon", groupItem.$appTabTray)[0];
+        is(icon.src, ICON_URL, "The app tab is showing the right icon");
+
+        finish();
+      });
+      win.gBrowser.pinTab(newTabTwo);
+    });
+  }, function(win) {
+    registerCleanupFunction(function() { 
+      Services.prefs.clearUserPref("browser.chrome.favicons");
+      win.close(); 
+   });
+
+    win.gBrowser.loadOneTab(TEST_URL);
+    win.gBrowser.loadOneTab(TEST_URL);
+  });
+}