Bug 1157712 - Fix multiple OS X notifications when someone joins a Loop room. Ensure we don't attempt to re-initialise twice. r=mikedeboer

browser/base/content/browser-loop.js

@@ -218,7 +218,15 @@ let LoopUI;
       // Add observer notifications before the service is initialized
       Services.obs.addObserver(this, "loop-status-changed", false);
 
-      this.MozLoopService.initialize();
+      // This is a promise for test purposes, but we don't want to be logging
+      // expected errors to the console, so we catch them here.
+      this.MozLoopService.initialize().catch(ex => {
+        if (!ex.message ||
+            (!ex.message.contains("not enabled") &&
+             !ex.message.contains("not needed"))) {
+          console.error(ex);
+        }
+      });
       this.updateToolbarState();
     },
 

browser/components/loop/modules/MozLoopService.jsm

@@ -1072,6 +1072,7 @@ let gInitializeTimerFunc = (deferredInitialization) => {
              MozLoopServiceInternal.initialRegistrationDelayMilliseconds);
 };
 
+let gServiceInitialized = false;
 
 /**
  * Public API
@@ -1089,10 +1090,21 @@ this.MozLoopService = {
     };
   },
 
+  /**
+   * Used to override the initalize timer function for test purposes.
+   */
   set initializeTimerFunc(value) {
     gInitializeTimerFunc = value;
   },
 
+  /**
+   * Used to reset if the service has been initialized or not - for test
+   * purposes.
+   */
+  resetServiceInitialized: function() {
+    gServiceInitialized = false;
+  },
+
   get roomsParticipantsCount() {
     return LoopRooms.participantsCount;
   },
@@ -1101,9 +1113,18 @@ this.MozLoopService = {
    * Initialized the loop service, and starts registration with the
    * push and loop servers.
    *
+   * Note: this returns a promise for unit test purposes.
+   *
    * @return {Promise}
    */
   initialize: Task.async(function*() {
+    // Ensure we don't setup things like listeners more than once.
+    if (gServiceInitialized) {
+      return Promise.resolve();
+    }
+
+    gServiceInitialized = true;
+
     // Do this here, rather than immediately after definition, so that we can
     // stub out API functions for unit testing
     Object.freeze(this);

browser/components/loop/test/xpcshell/test_loopservice_initialize.js

@@ -40,11 +40,19 @@ add_task(function test_initialize_no_guest_rooms() {
 add_task(function test_initialize_with_guest_rooms() {
   Services.prefs.setBoolPref("loop.createdRoom", true);
   startTimerCalled = false;
+  MozLoopService.resetServiceInitialized();
 
   MozLoopService.initialize();
 
   Assert.equal(startTimerCalled, true,
     "should start the timer when guest rooms have been created");
+
+  startTimerCalled = false;
+
+  MozLoopService.initialize();
+
+  Assert.equal(startTimerCalled, false,
+    "should not have initialized a second time");
 });
 
 function run_test() {

browser/components/loop/test/xpcshell/test_loopservice_restart.js

@@ -39,6 +39,7 @@ add_task(function* test_initialize_with_no_guest_rooms_and_no_auth_token() {
 add_task(function* test_initialize_with_created_room_and_no_auth_token() {
   Services.prefs.setBoolPref(LOOP_CREATED_ROOM_PREF, true);
   Services.prefs.clearUserPref(LOOP_FXA_TOKEN_PREF);
+  MozLoopService.resetServiceInitialized();
 
   loopServer.registerPathHandler("/registration", (request, response) => {
     response.setStatusLine(null, 200, "OK");
@@ -55,6 +56,7 @@ add_task(function* test_initialize_with_created_room_and_no_auth_token() {
 add_task(function* test_initialize_with_invalid_fxa_token() {
   Services.prefs.setCharPref(LOOP_FXA_PROFILE_PREF, FAKE_FXA_PROFILE);
   Services.prefs.setCharPref(LOOP_FXA_TOKEN_PREF, FAKE_FXA_TOKEN_DATA);
+  MozLoopService.resetServiceInitialized();
 
   // Only need to implement the FxA registration because the previous
   // test registered as a guest.
@@ -88,6 +90,7 @@ add_task(function* test_initialize_with_invalid_fxa_token() {
 add_task(function* test_initialize_with_fxa_token() {
   Services.prefs.setCharPref(LOOP_FXA_PROFILE_PREF, FAKE_FXA_PROFILE);
   Services.prefs.setCharPref(LOOP_FXA_TOKEN_PREF, FAKE_FXA_TOKEN_DATA);
+  MozLoopService.resetServiceInitialized();
 
   MozLoopService.errors.clear();