diff -r 000000000000 -r 6474c204b198 toolkit/components/crashes/tests/xpcshell/test_crash_service.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/crashes/tests/xpcshell/test_crash_service.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
+
+Cu.import("resource://gre/modules/Services.jsm", this);
+Cu.import("resource://testing-common/AppData.jsm", this);
+let bsp = Cu.import("resource://gre/modules/CrashManager.jsm", this);
+
+function run_test() {
+  run_next_test();
+}
+
+add_task(function* test_instantiation() {
+  Assert.ok(!bsp.gCrashManager, "CrashManager global instance not initially defined.");
+
+  do_get_profile();
+  yield makeFakeAppDir();
+
+  // Fake profile creation.
+  Cc["@mozilla.org/crashservice;1"]
+    .getService(Ci.nsIObserver)
+    .observe(null, "profile-after-change", null);
+
+  Assert.ok(bsp.gCrashManager, "Profile creation makes it available.");
+  Assert.ok(Services.crashmanager, "CrashManager available via Services.");
+  Assert.strictEqual(bsp.gCrashManager, Services.crashmanager,
+                     "The objects are the same.");
+});