diff -r 000000000000 -r 6474c204b198 dom/plugins/test/unit/test_bug471245.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/plugins/test/unit/test_bug471245.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+/* 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/.
+ */
+
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+function run_test() {
+  do_get_profile_startup();
+
+  var plugin = get_test_plugintag();
+  do_check_true(plugin == null);
+
+  // Initialises a profile folder
+  do_get_profile();
+
+  var plugin = get_test_plugintag();
+  do_check_false(plugin == null);
+
+  // Clean up
+  Services.prefs.clearUserPref("plugin.importedState");
+}