[Sync] Rework Invalidator-related unit tests

sync/notifier/fake_invalidator_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 "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "sync/notifier/fake_invalidator.h"
+#include "sync/notifier/invalidator_test_template.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace syncer {
+
+namespace {
+
+class FakeInvalidatorTestDelegate {
+ public:
+  FakeInvalidatorTestDelegate() {}
+
+  ~FakeInvalidatorTestDelegate() {
+    DestroyInvalidator();
+  }
+
+  void CreateInvalidator(
+      const std::string& initial_state,
+      const base::WeakPtr<InvalidationStateTracker>&
+          invalidation_state_tracker) {
+    DCHECK(!invalidator_.get());
+    invalidator_.reset(new FakeInvalidator());
+  }
+
+  FakeInvalidator* GetInvalidator() {
+    return invalidator_.get();
+  }
+
+  void DestroyInvalidator() {
+    invalidator_.reset();
+  }
+
+  void WaitForInvalidator() {
+    // Do Nothing.
+  }
+
+  void TriggerOnNotificationsEnabled() {
+    invalidator_->EmitOnNotificationsEnabled();
+  }
+
+  void TriggerOnIncomingNotification(const ObjectIdStateMap& id_state_map,
+                                     IncomingNotificationSource source) {
+    invalidator_->EmitOnIncomingNotification(id_state_map, source);
+  }
+
+  void TriggerOnNotificationsDisabled(NotificationsDisabledReason reason) {
+    invalidator_->EmitOnNotificationsDisabled(reason);
+  }
+
+  static bool InvalidatorHandlesDeprecatedState() {
+    return false;
+  }
+
+ private:
+  scoped_ptr<FakeInvalidator> invalidator_;
+};
+
+INSTANTIATE_TYPED_TEST_CASE_P(
+    FakeInvalidatorTest, InvalidatorTest,
+    FakeInvalidatorTestDelegate);
+
+}  // namespace
+
+}  // namespace syncer