diff --git a/mozilla/toolkit/components/places/tests/unit/test_isvisited.js b/mozilla/toolkit/components/places/tests/unit/test_isvisited.js
new file mode 100644
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+++ b/mozilla/toolkit/components/places/tests/unit/test_isvisited.js
@@ -0,0 +1,87 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Google Inc.
+ * Portions created by the Initial Developer are Copyright (C) 2005
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *  Darin Fisher <darin@meer.net>
+ *  Dietrich Ayala <dietrich@mozilla.com>
+ *  Dan Mills <thunder@mozilla.com>
+ *  Seth Spitzer <sspitzer@mozilla.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// Get history service
+try {
+  var gh = Cc["@mozilla.org/browser/global-history;2"].
+           getService(Ci.nsIGlobalHistory2);
+} catch(ex) {
+  do_throw("Could not get the global history service\n");
+} 
+
+function add_uri_to_history(aURI) {
+  var referrer = uri("about:blank");
+  gh.addURI(aURI,
+            false, // not redirect
+            true, // top level 
+            referrer);
+}
+
+// main
+function run_test() {
+  // add a http:// uri 
+  var uri1 = uri("http://mozilla.com");
+  add_uri_to_history(uri1);
+  do_check_true(gh.isVisited(uri1));
+ 
+  // add a https:// uri
+  var uri2 = uri("https://etrade.com");
+  add_uri_to_history(uri2);
+  do_check_true(gh.isVisited(uri2));
+
+  // add a ftp:// uri
+  var uri3 = uri("ftp://ftp.mozilla.org");
+  add_uri_to_history(uri3);
+  do_check_true(gh.isVisited(uri3));
+
+  // check if a non-existant uri is visited
+  var uri4 = uri("http://foobarcheese.com");
+  do_check_false(gh.isVisited(uri4));
+
+  // will fail until we fix bug #408790
+  // check that certain schemes never show up as visited
+  // even if we visit them
+  //var cantAddUri = uri("about:config");
+  //add_uri_to_history(cantAddUri);
+  //do_check_false(gh.isVisited(cantAddUri));
+  //todo, test imap, news, mailbox, moz-anno, view-source, chrome, data
+  //see CanAddURI() in nsNavHistory.cpp
+}