Introduce CryptAuthGCMManager, which handles GCM interactions for CryptAuth.

components/proximity_auth/cryptauth/cryptauth_gcm_manager_impl_unittest.cc

Index: components/proximity_auth/cryptauth/cryptauth_gcm_manager_impl_unittest.cc
diff --git a/components/proximity_auth/cryptauth/cryptauth_gcm_manager_impl_unittest.cc b/components/proximity_auth/cryptauth/cryptauth_gcm_manager_impl_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..02b35ac555b0af8c8f69f19c25e66442bc12cea4
--- /dev/null
+++ b/components/proximity_auth/cryptauth/cryptauth_gcm_manager_impl_unittest.cc
@@ -0,0 +1,197 @@
+// Copyright 2015 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 "components/proximity_auth/cryptauth/cryptauth_gcm_manager_impl.h"
+
+#include "base/prefs/testing_pref_service.h"
+#include "components/gcm_driver/fake_gcm_driver.h"
+#include "components/gcm_driver/gcm_client.h"
+#include "components/proximity_auth/cryptauth/pref_names.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::_;
+using ::testing::SaveArg;
+
+namespace proximity_auth {
+
+namespace {
+
+const char kCryptAuthGCMAppId[] = "com.google.chrome.cryptauth";
+const char kCryptAuthGCMSenderId[] = "381449029288";
+const char kExistingGCMRegistrationId[] = "cirrus";
+const char kNewGCMRegistrationId[] = "stratus";
+const char kCryptAuthMessageCollapseKey[] =
+    "collapse_cryptauth_sync_DEVICES_SYNC";
+
+// Mock GCMDriver implementation for testing.
+class MockGCMDriver : public gcm::FakeGCMDriver {
+ public:
+  MockGCMDriver() {}
+  ~MockGCMDriver() override {}
+
+  MOCK_METHOD2(AddAppHandler,
+               void(const std::string& app_id, gcm::GCMAppHandler* handler));
+
+  MOCK_METHOD2(RegisterImpl,
+               void(const std::string& app_id,
+                    const std::vector<std::string>& sender_ids));
+
+  using gcm::GCMDriver::RegisterFinished;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockGCMDriver);
+};
+
+}  // namespace
+
+class ProximityAuthCryptAuthGCMManagerImplTest
+    : public testing::Test,
+      public CryptAuthGCMManager::Observer {
+ protected:
+  ProximityAuthCryptAuthGCMManagerImplTest()
+      : gcm_manager_(&gcm_driver_, &pref_service_) {}
+
+  // testing::Test:
+  void SetUp() override {
+    CryptAuthGCMManager::RegisterPrefs(pref_service_.registry());
+    gcm_manager_.AddObserver(this);
+    EXPECT_CALL(gcm_driver_, AddAppHandler(kCryptAuthGCMAppId, &gcm_manager_));
+    gcm_manager_.StartListening();
+  }
+
+  void TearDown() override { gcm_manager_.RemoveObserver(this); }
+
+  void RegisterWithGCM(gcm::GCMClient::Result registration_result) {
+    std::vector<std::string> sender_ids;
+    EXPECT_CALL(gcm_driver_, RegisterImpl(kCryptAuthGCMAppId, _))
+        .WillOnce(SaveArg<1>(&sender_ids));
+    gcm_manager_.RegisterWithGCM();
+
+    ASSERT_EQ(1u, sender_ids.size());
+    EXPECT_EQ(kCryptAuthGCMSenderId, sender_ids[0]);
+
+    bool success = (registration_result == gcm::GCMClient::SUCCESS);
+    EXPECT_CALL(*this, OnGCMRegistrationResultProxy(success));
+    gcm_driver_.RegisterFinished(kCryptAuthGCMAppId, kNewGCMRegistrationId,
+                                 registration_result);
+  }
+
+  // CryptAuthGCMManager::Observer:
+  void OnGCMRegistrationResult(bool success) override {
+    OnGCMRegistrationResultProxy(success);
+  }
+
+  void OnReenrollMessage() override { OnReenrollMessageProxy(); }
+
+  void OnResyncMessage() override { OnResyncMessageProxy(); }
+
+  MOCK_METHOD1(OnGCMRegistrationResultProxy, void(bool));
+  MOCK_METHOD0(OnReenrollMessageProxy, void());
+  MOCK_METHOD0(OnResyncMessageProxy, void());
+
+  testing::StrictMock<MockGCMDriver> gcm_driver_;
+
+  TestingPrefServiceSimple pref_service_;
+
+  CryptAuthGCMManagerImpl gcm_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(ProximityAuthCryptAuthGCMManagerImplTest);
+};
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest, RegisterPrefs) {
+  TestingPrefServiceSimple pref_service;
+  CryptAuthGCMManager::RegisterPrefs(pref_service.registry());
+  EXPECT_TRUE(pref_service.FindPreference(prefs::kCryptAuthGCMRegistrationId));
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest, RegistrationSucceeds) {
+  EXPECT_EQ(std::string(), gcm_manager_.GetRegistrationId());
+  RegisterWithGCM(gcm::GCMClient::SUCCESS);
+  EXPECT_EQ(kNewGCMRegistrationId, gcm_manager_.GetRegistrationId());
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest,
+       RegistrationSucceedsWithExistingRegistration) {
+  pref_service_.SetString(prefs::kCryptAuthGCMRegistrationId,
+                          kExistingGCMRegistrationId);
+  EXPECT_EQ(kExistingGCMRegistrationId, gcm_manager_.GetRegistrationId());
+  RegisterWithGCM(gcm::GCMClient::SUCCESS);
+  EXPECT_EQ(kNewGCMRegistrationId, gcm_manager_.GetRegistrationId());
+  EXPECT_EQ(kNewGCMRegistrationId,
+            pref_service_.GetString(prefs::kCryptAuthGCMRegistrationId));
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest, RegisterWithGCMFails) {
+  EXPECT_EQ(std::string(), gcm_manager_.GetRegistrationId());
+  RegisterWithGCM(gcm::GCMClient::SERVER_ERROR);
+  EXPECT_EQ(std::string(), gcm_manager_.GetRegistrationId());
+  EXPECT_EQ(std::string(),
+            pref_service_.GetString(prefs::kCryptAuthGCMRegistrationId));
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest,
+       RegisterWithGCMFailsWithExistingRegistration) {
+  pref_service_.SetString(prefs::kCryptAuthGCMRegistrationId,
+                          kExistingGCMRegistrationId);
+  EXPECT_EQ(kExistingGCMRegistrationId, gcm_manager_.GetRegistrationId());
+  RegisterWithGCM(gcm::GCMClient::SERVER_ERROR);
+  EXPECT_EQ(kExistingGCMRegistrationId, gcm_manager_.GetRegistrationId());
+  EXPECT_EQ(kExistingGCMRegistrationId,
+            pref_service_.GetString(prefs::kCryptAuthGCMRegistrationId));
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest,
+       RegistrationFailsThenSucceeds) {
+  EXPECT_EQ(std::string(), gcm_manager_.GetRegistrationId());
+  RegisterWithGCM(gcm::GCMClient::NETWORK_ERROR);
+  EXPECT_EQ(std::string(), gcm_manager_.GetRegistrationId());
+  RegisterWithGCM(gcm::GCMClient::SUCCESS);
+  EXPECT_EQ(kNewGCMRegistrationId, gcm_manager_.GetRegistrationId());
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest, ConcurrentRegistrations) {
+  // If multiple RegisterWithGCM() calls are made concurrently, only one
+  // registration attempt should actually be made.
+  EXPECT_CALL(gcm_driver_, RegisterImpl(kCryptAuthGCMAppId, _));
+  gcm_manager_.RegisterWithGCM();
+  gcm_manager_.RegisterWithGCM();
+  gcm_manager_.RegisterWithGCM();
+
+  EXPECT_CALL(*this, OnGCMRegistrationResultProxy(true));
+  gcm_driver_.RegisterFinished(kCryptAuthGCMAppId, kNewGCMRegistrationId,
+                               gcm::GCMClient::SUCCESS);
+  EXPECT_EQ(kNewGCMRegistrationId, gcm_manager_.GetRegistrationId());
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest, ReenrollmentMessagesReceived) {
+  EXPECT_CALL(*this, OnReenrollMessageProxy()).Times(2);
+
+  gcm::GCMClient::IncomingMessage message;
+  message.data["registrationTickleType"] = "1";  // FORCE_ENROLLMENT
+  message.collapse_key = kCryptAuthMessageCollapseKey;
+  message.sender_id = kCryptAuthGCMSenderId;
+
+  gcm::GCMAppHandler* gcm_app_handler =
+      static_cast<gcm::GCMAppHandler*>(&gcm_manager_);
+  gcm_app_handler->OnMessage(kCryptAuthGCMAppId, message);
+  message.data["registrationTickleType"] = "2";  // UPDATE_ENROLLMENT
+  gcm_app_handler->OnMessage(kCryptAuthGCMAppId, message);
+}
+
+TEST_F(ProximityAuthCryptAuthGCMManagerImplTest, ResyncMessagesReceived) {
+  EXPECT_CALL(*this, OnResyncMessageProxy()).Times(2);
+
+  gcm::GCMClient::IncomingMessage message;
+  message.data["registrationTickleType"] = "3";  // DEVICES_SYNC
+  message.collapse_key = kCryptAuthMessageCollapseKey;
+  message.sender_id = kCryptAuthGCMSenderId;
+
+  gcm::GCMAppHandler* gcm_app_handler =
+      static_cast<gcm::GCMAppHandler*>(&gcm_manager_);
+  gcm_app_handler->OnMessage(kCryptAuthGCMAppId, message);
+  gcm_app_handler->OnMessage(kCryptAuthGCMAppId, message);
+}
+
+}  // namespace proximity_auth