diff -r 000000000000 -r 6474c204b198 dom/bluetooth/tests/marionette/test_dom_BluetoothManager_enabled.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/bluetooth/tests/marionette/test_dom_BluetoothManager_enabled.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 sts=2 et filetype=javascript
+ * 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/. */
+
+MARIONETTE_TIMEOUT = 60000;
+MARIONETTE_HEAD_JS = 'head.js';
+
+function waitEitherEnabledOrDisabled() {
+  let deferred = Promise.defer();
+
+  function onEnabledDisabled(aEvent) {
+    bluetoothManager.removeEventListener("adapteradded", onEnabledDisabled);
+    bluetoothManager.removeEventListener("disabled", onEnabledDisabled);
+
+    ok(true, "Got event " + aEvent.type);
+    deferred.resolve(aEvent.type === "adapteradded");
+  }
+
+  // Listen 'adapteradded' rather than 'enabled' since the current API can't
+  // disable BT before the BT adapter is initialized.
+  // We should listen to 'enabled' when gecko can handle the case I mentioned
+  // above, please refer to the follow-up bug 973482.
+  bluetoothManager.addEventListener("adapteradded", onEnabledDisabled);
+  bluetoothManager.addEventListener("disabled", onEnabledDisabled);
+
+  return deferred.promise;
+}
+
+function test(aEnabled) {
+  log("Testing 'bluetooth.enabled' => " + aEnabled);
+
+  let deferred = Promise.defer();
+
+  // Ensures that we can always receive that "enabled"/"disabled" event by
+  // installing the event handler *before* we ever enable/disable Bluetooth. Or
+  // we might just miss those events and get a timeout error.
+  let promises = [];
+  promises.push(waitEitherEnabledOrDisabled());
+  promises.push(setBluetoothEnabled(aEnabled));
+  Promise.all(promises)
+    .then(function(aResults) {
+      /* aResults is an array of two elements:
+       *   [ <result of waitEitherEnabledOrDisabled>,
+       *     <result of setBluetoothEnabled>]
+       */
+      log("  Examine results " + JSON.stringify(aResults));
+
+      is(bluetoothManager.enabled, aEnabled, "bluetoothManager.enabled");
+      is(aResults[0], aEnabled, "'adapteradded' event received");
+
+      if (bluetoothManager.enabled === aEnabled && aResults[0] === aEnabled) {
+        deferred.resolve();
+      } else {
+        deferred.reject();
+      }
+    });
+
+  return deferred.promise;
+}
+
+startBluetoothTestBase(["settings-read", "settings-write"],
+                       function testCaseMain() {
+  return getBluetoothEnabled()
+    .then(function(aEnabled) {
+      log("Original 'bluetooth.enabled' is " + aEnabled);
+      // Set to !aEnabled and reset back to aEnabled.
+      return test(!aEnabled).then(test.bind(null, aEnabled));
+    });
+});