diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_bug406216.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_bug406216.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,54 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * "TabClose" event is possibly used for closing related tabs of the current.
+ * "removeTab" method should work correctly even if the number of tabs are
+ * changed while "TabClose" event.
+ */
+
+var count = 0;
+const URIS = ["about:config",
+              "about:plugins",
+              "about:buildconfig",
+              "data:text/html,<title>OK</title>"];
+
+function test() {
+  waitForExplicitFinish();
+  URIS.forEach(addTab);
+}
+
+function addTab(aURI, aIndex) {
+  var tab = gBrowser.addTab(aURI);
+  if (aIndex == 0)
+    gBrowser.removeTab(gBrowser.tabs[0]);
+
+  tab.linkedBrowser.addEventListener("load", function (event) {
+    event.currentTarget.removeEventListener("load", arguments.callee, true);
+    if (++count == URIS.length)
+      executeSoon(doTabsTest);
+  }, true);
+}
+
+function doTabsTest() {
+  is(gBrowser.tabs.length, URIS.length, "Correctly opened all expected tabs");
+
+  // sample of "close related tabs" feature
+  gBrowser.tabContainer.addEventListener("TabClose", function (event) {
+    event.currentTarget.removeEventListener("TabClose", arguments.callee, true);
+    var closedTab = event.originalTarget;
+    var scheme = closedTab.linkedBrowser.currentURI.scheme;
+    Array.slice(gBrowser.tabs).forEach(function (aTab) {
+      if (aTab != closedTab && aTab.linkedBrowser.currentURI.scheme == scheme)
+        gBrowser.removeTab(aTab);
+    });
+  }, true);
+
+  gBrowser.removeTab(gBrowser.tabs[0]);
+  is(gBrowser.tabs.length, 1, "Related tabs are not closed unexpectedly");
+
+  gBrowser.addTab("about:blank");
+  gBrowser.removeTab(gBrowser.tabs[0]);
+  finish();
+}