diff -r 000000000000 -r 6474c204b198 browser/modules/test/unit/social/test_socialDisabledStartup.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/modules/test/unit/social/test_socialDisabledStartup.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,29 @@
+/* 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() {
+  // we are testing worker startup specifically
+  do_test_pending();
+  add_test(testStartupDisabled);
+  add_test(testEnableAfterStartup);
+  do_initialize_social(false, run_next_test);
+}
+
+function testStartupDisabled() {
+  // wait on startup before continuing
+  do_check_false(Social.enabled, "Social is disabled");
+  do_check_eq(Social.providers.length, 0, "zero social providers available");
+  run_next_test();
+}
+
+function testEnableAfterStartup() {
+  do_add_providers(function () {
+    do_check_true(Social.enabled, "Social is enabled");
+    do_check_eq(Social.providers.length, 2, "two social providers available");
+    do_check_true(Social.providers[0].enabled, "provider 0 is enabled");
+    do_check_true(Social.providers[1].enabled, "provider 1 is enabled");
+    do_test_finished();
+    run_next_test();
+  });
+}