[Sync] Avoid unregistering object IDs on shutdown

sync/notifier/invalidation_notifier_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/notifier/invalidation_notifier.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "jingle/notifier/base/fake_base_task.h"
 #include "jingle/notifier/base/notifier_options.h"
@@ skipping 15 matching lines @@
 using ::testing::InSequence;
 using ::testing::StrictMock;
 
 class InvalidationNotifierTest : public testing::Test {
  protected:
   virtual void TearDown() {
     if (invalidation_notifier_.get())
       ResetNotifier();
   }
 
-  // Constructs an InvalidationNotifier, places it in
-  // |invalidation_notifier_|, and adds |mock_observer_| as an observer. This
-  // remains in place until either TearDown (automatic) or ResetNotifier
-  // (manual) is called.
-  void CreateAndObserveNotifier(
+  // Constructs an InvalidationNotifier, places it in |invalidation_notifier_|,
+  // and registers |mock_observer_| as a handler. This remains in place until
+  // either TearDown (automatic) or ResetNotifier (manual) is called.
+  void CreateNotifier(
       const std::string& initial_invalidation_state) {
     notifier::NotifierOptions notifier_options;
     // Note: URLRequestContextGetters are ref-counted.
     notifier_options.request_context_getter =
         new TestURLRequestContextGetter(message_loop_.message_loop_proxy());
     invalidation_notifier_.reset(
         new InvalidationNotifier(
             scoped_ptr<notifier::PushClient>(new notifier::FakePushClient()),
             InvalidationVersionMap(),
             initial_invalidation_state,
             MakeWeakHandle(fake_tracker_.AsWeakPtr()),
             "fake_client_info"));
+    invalidation_notifier_->RegisterHandler(&mock_observer_);
   }
 
   void ResetNotifier() {
-    invalidation_notifier_->UpdateRegisteredIds(&mock_observer_, ObjectIdSet());
+    invalidation_notifier_->UnregisterHandler(&mock_observer_);
     // Stopping the invalidation notifier stops its scheduler, which deletes any
     // pending tasks without running them.  Some tasks "run and delete" another
     // task, so they must be run in order to avoid leaking the inner task.
     // Stopping does not schedule any tasks, so it's both necessary and
     // sufficient to drain the task queue before stopping the notifier.
     message_loop_.RunAllPending();
     invalidation_notifier_.reset();
   }
 
   void SetStateDeprecated(const std::string& new_state) {
     invalidation_notifier_->SetStateDeprecated(new_state);
     message_loop_.RunAllPending();
   }
 
  private:
   MessageLoopForIO message_loop_;
   notifier::FakeBaseTask fake_base_task_;
 
  protected:
   scoped_ptr<InvalidationNotifier> invalidation_notifier_;
   FakeInvalidationStateTracker fake_tracker_;
   StrictMock<MockSyncNotifierObserver> mock_observer_;
 };
 
 TEST_F(InvalidationNotifierTest, Basic) {
-  CreateAndObserveNotifier("fake_state");
   InSequence dummy;
 
-  ModelTypeSet models(PREFERENCES, BOOKMARKS, AUTOFILL);
-  invalidation_notifier_->UpdateRegisteredIds(
-      &mock_observer_, ModelTypeSetToObjectIdSet(models));
+  CreateNotifier("fake_state");
 
+  const ModelTypeSet models(PREFERENCES, BOOKMARKS, AUTOFILL);
   const ModelTypePayloadMap& type_payloads =
       ModelTypePayloadMapFromEnumSet(models, "payload");
   EXPECT_CALL(mock_observer_, OnNotificationsEnabled());
   EXPECT_CALL(mock_observer_, OnIncomingNotification(
       ModelTypePayloadMapToObjectIdPayloadMap(type_payloads),
       REMOTE_NOTIFICATION));
   EXPECT_CALL(mock_observer_,
               OnNotificationsDisabled(TRANSIENT_NOTIFICATION_ERROR));
   EXPECT_CALL(mock_observer_,
               OnNotificationsDisabled(NOTIFICATION_CREDENTIALS_REJECTED));
 
+  invalidation_notifier_->UpdateRegisteredIds(
+      &mock_observer_, ModelTypeSetToObjectIdSet(models));
+
   // TODO(tim): This call should be a no-op, Remove once bug 124140 and
   // associated issues are fixed.
   invalidation_notifier_->SetStateDeprecated("fake_state");
   // We don't expect |fake_tracker_|'s state to change, as we
   // initialized with non-empty initial_invalidation_state above.
   EXPECT_TRUE(fake_tracker_.GetInvalidationState().empty());
   invalidation_notifier_->SetUniqueId("fake_id");
   invalidation_notifier_->UpdateCredentials("foo@bar.com", "fake_token");
 
   invalidation_notifier_->OnNotificationsEnabled();
 
   invalidation_notifier_->OnInvalidate(
       ModelTypePayloadMapToObjectIdPayloadMap(type_payloads));
 
   invalidation_notifier_->OnNotificationsDisabled(
       TRANSIENT_NOTIFICATION_ERROR);
   invalidation_notifier_->OnNotificationsDisabled(
       NOTIFICATION_CREDENTIALS_REJECTED);
 }
 
 TEST_F(InvalidationNotifierTest, MigrateState) {
-  CreateAndObserveNotifier(std::string());
+  CreateNotifier(std::string());
 
   SetStateDeprecated("fake_state");
   EXPECT_EQ("fake_state", fake_tracker_.GetInvalidationState());
 
   // Should do nothing.
   SetStateDeprecated("spurious_fake_state");
   EXPECT_EQ("fake_state", fake_tracker_.GetInvalidationState());
 
   // Pretend Chrome shut down.
   ResetNotifier();
 
-  CreateAndObserveNotifier("fake_state");
+  CreateNotifier("fake_state");
   // Should do nothing.
   SetStateDeprecated("more_spurious_fake_state");
   EXPECT_EQ("fake_state", fake_tracker_.GetInvalidationState());
 }
 
 }  // namespace
 
 }  // namespace syncer