diff -r 000000000000 -r 6474c204b198 toolkit/components/places/tests/unit/test_resolveNullBookmarkTitles.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/places/tests/unit/test_resolveNullBookmarkTitles.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* 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/. */
+
+function run_test() {
+  run_next_test();
+}
+
+add_test(function test_resolveNullBookmarkTitles() {
+  let uri1 = uri("http://foo.tld/");
+  let uri2 = uri("https://bar.tld/");
+
+  promiseAddVisits([
+    { uri: uri1, title: "foo title" },
+    { uri: uri2, title: "bar title" }
+  ]).then(function () {
+    PlacesUtils.bookmarks.insertBookmark(PlacesUtils.bookmarksMenuFolderId,
+                                         uri1,
+                                         PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                         null);
+    PlacesUtils.bookmarks.insertBookmark(PlacesUtils.bookmarksMenuFolderId,
+                                         uri2,
+                                         PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                         null);
+
+    PlacesUtils.tagging.tagURI(uri1, ["tag 1"]);
+    PlacesUtils.tagging.tagURI(uri2, ["tag 2"]);
+
+    let options = PlacesUtils.history.getNewQueryOptions();
+    options.queryType = Ci.nsINavHistoryQueryOptions.QUERY_TYPE_BOOKMARKS;
+    options.resultType = options.RESULTS_AS_TAG_CONTENTS;
+
+    let query = PlacesUtils.history.getNewQuery();
+    // if we don't set a tag folder, RESULTS_AS_TAG_CONTENTS will return all
+    // tagged URIs
+    let root = PlacesUtils.history.executeQuery(query, options).root;
+    root.containerOpen = true;
+    do_check_eq(root.childCount, 2);
+    // actually RESULTS_AS_TAG_CONTENTS return results ordered by place_id DESC
+    // so they are reversed
+    do_check_eq(root.getChild(0).title, "bar title");
+    do_check_eq(root.getChild(1).title, "foo title");
+    root.containerOpen = false;
+
+    run_next_test();
+  });
+});