diff -r 000000000000 -r 6474c204b198 toolkit/components/places/tests/unit/test_preventive_maintenance_runTasks.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/places/tests/unit/test_preventive_maintenance_runTasks.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,46 @@
+/* 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/. */
+
+ /**
+  * Test preventive maintenance runTasks.
+  */
+
+// Include PlacesDBUtils module.
+Components.utils.import("resource://gre/modules/PlacesDBUtils.jsm");
+
+function run_test() {
+  do_test_pending();
+  PlacesDBUtils.runTasks([PlacesDBUtils.reindex], function(aLog) {
+    let sections = [];
+    let positives = [];
+    let negatives = [];
+    let infos = [];
+
+    aLog.forEach(function (aMsg) {
+      print (aMsg);
+      switch (aMsg.substr(0, 1)) {
+        case "+":
+          positives.push(aMsg);
+          break;
+        case "-":
+          negatives.push(aMsg);
+          break;
+        case ">":
+          sections.push(aMsg);
+          break;
+        default:
+          infos.push(aMsg);
+      }
+    });
+
+    print("Check that we have run all sections.");
+    do_check_eq(sections.length, 1);
+    print("Check that we have no negatives.");
+    do_check_false(!!negatives.length);
+    print("Check that we have positives.");
+    do_check_true(!!positives.length);
+
+    do_test_finished();
+  });
+}