diff -r 000000000000 -r 6474c204b198 tools/profiler/tests/test_shared_library.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/profiler/tests/test_shared_library.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+/* 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() {
+  // If we can't get the profiler component then assume gecko was
+  // built without it and pass all the tests
+  var profilerCc = Cc["@mozilla.org/tools/profiler;1"];
+  if (!profilerCc)
+    return;
+
+  var profiler = Cc["@mozilla.org/tools/profiler;1"].getService(Ci.nsIProfiler);
+  if (!profiler)
+    return;
+
+  var sharedStr = profiler.getSharedLibraryInformation();
+  sharedStr = sharedStr.toLowerCase();
+
+  // Let's not hardcode anything too specific
+  // just some sanity checks.
+  do_check_neq(sharedStr, null);
+  do_check_neq(sharedStr, "");
+}