// 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 "components/browser_sync/profile_sync_service.h"

#include <utility>

#include "base/callback.h"
#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/run_loop.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/scoped_task_environment.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/values.h"
#include "components/browser_sync/browser_sync_switches.h"
#include "components/browser_sync/profile_sync_test_util.h"
#include "components/invalidation/impl/profile_invalidation_provider.h"
#include "components/invalidation/public/invalidation_service.h"
#include "components/signin/core/browser/account_tracker_service.h"
#include "components/signin/core/browser/fake_signin_manager.h"
#include "components/sync/base/pref_names.h"
#include "components/sync/driver/fake_data_type_controller.h"
#include "components/sync/driver/sync_api_component_factory_mock.h"
#include "components/sync/driver/sync_driver_switches.h"
#include "components/sync/driver/sync_service_observer.h"
#include "components/sync/driver/sync_util.h"
#include "components/sync/engine/fake_sync_engine.h"
#include "components/sync/model/model_type_store_test_util.h"
#include "components/sync_preferences/testing_pref_service_syncable.h"
#include "components/version_info/version_info_values.h"
#include "google_apis/gaia/gaia_constants.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"

using syncer::DataTypeController;
using syncer::FakeSyncEngine;
using syncer::ModelTypeSet;
using syncer::SyncMergeResult;
using testing::Return;

namespace browser_sync {

namespace {

const char kGaiaId[] = "12345";
const char kEmail[] = "test_user@gmail.com";

class FakeDataTypeManager : public syncer::DataTypeManager {
 public:
  using ConfigureCalled = base::Callback<void(syncer::ConfigureReason)>;

  explicit FakeDataTypeManager(const ConfigureCalled& configure_called)
      : configure_called_(configure_called) {}

  ~FakeDataTypeManager() override {}

  void Configure(syncer::ModelTypeSet desired_types,
                 syncer::ConfigureReason reason) override {
    DCHECK(!configure_called_.is_null());
    configure_called_.Run(reason);
  }

  void ReenableType(syncer::ModelType type) override {}
  void ResetDataTypeErrors() override {}
  void PurgeForMigration(syncer::ModelTypeSet undesired_types,
                         syncer::ConfigureReason reason) override {}
  void Stop() override {}
  ModelTypeSet GetActiveDataTypes() const override { return ModelTypeSet(); }
  bool IsNigoriEnabled() const override { return true; }
  State state() const override { return syncer::DataTypeManager::CONFIGURED; }

 private:
  ConfigureCalled configure_called_;
};

ACTION_P(ReturnNewDataTypeManager, configure_called) {
  return new FakeDataTypeManager(configure_called);
}

using testing::Return;
using testing::StrictMock;
using testing::_;

class TestSyncServiceObserver : public syncer::SyncServiceObserver {
 public:
  explicit TestSyncServiceObserver(ProfileSyncService* service)
      : service_(service), setup_in_progress_(false) {}
  void OnStateChanged(syncer::SyncService* sync) override {
    setup_in_progress_ = service_->IsSetupInProgress();
  }
  bool setup_in_progress() const { return setup_in_progress_; }

 private:
  ProfileSyncService* service_;
  bool setup_in_progress_;
};

// A variant of the FakeSyncEngine that won't automatically call back when asked
// to initialized. Allows us to test things that could happen while backend init
// is in progress.
class SyncEngineNoReturn : public FakeSyncEngine {
  void Initialize(InitParams params) override {}
};

class FakeSyncEngineCollectDeleteDirParam : public FakeSyncEngine {
 public:
  explicit FakeSyncEngineCollectDeleteDirParam(
      std::vector<bool>* delete_dir_param)
      : delete_dir_param_(delete_dir_param) {}

  void Initialize(InitParams params) override {
    delete_dir_param_->push_back(params.delete_sync_data_folder);
    FakeSyncEngine::Initialize(std::move(params));
  }

 private:
  std::vector<bool>* delete_dir_param_;
};

// FakeSyncEngine that calls an external callback when ClearServerData is
// called.
class SyncEngineCaptureClearServerData : public FakeSyncEngine {
 public:
  using ClearServerDataCalled = base::Callback<void(const base::Closure&)>;
  explicit SyncEngineCaptureClearServerData(
      const ClearServerDataCalled& clear_server_data_called)
      : clear_server_data_called_(clear_server_data_called) {}

  void ClearServerData(const base::Closure& callback) override {
    clear_server_data_called_.Run(callback);
  }

 private:
  ClearServerDataCalled clear_server_data_called_;
};

ACTION(ReturnNewFakeSyncEngine) {
  return new FakeSyncEngine();
}

ACTION(ReturnNewSyncEngineNoReturn) {
  return new SyncEngineNoReturn();
}

ACTION_P(ReturnNewMockHostCollectDeleteDirParam, delete_dir_param) {
  return new FakeSyncEngineCollectDeleteDirParam(delete_dir_param);
}

void OnClearServerDataCalled(base::Closure* captured_callback,
                             const base::Closure& callback) {
  *captured_callback = callback;
}

ACTION_P(ReturnNewMockHostCaptureClearServerData, captured_callback) {
  return new SyncEngineCaptureClearServerData(base::Bind(
      &OnClearServerDataCalled, base::Unretained(captured_callback)));
}

void DoNothing(DataTypeController::ConfigureResult ignored1,
               const SyncMergeResult& ignored2,
               const SyncMergeResult& ignored3) {}

// A test harness that uses a real ProfileSyncService and in most cases a
// MockSyncEngine.
//
// This is useful if we want to test the ProfileSyncService and don't care about
// testing the SyncEngine.
class ProfileSyncServiceTest : public ::testing::Test {
 protected:
  ProfileSyncServiceTest() : component_factory_(nullptr) {}
  ~ProfileSyncServiceTest() override {}

  void SetUp() override {
    base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
        switches::kSyncDeferredStartupTimeoutSeconds, "0");
  }

  void TearDown() override {
    // Kill the service before the profile.
    if (service_)
      service_->Shutdown();

    service_.reset();
  }

  void IssueTestTokens() {
    std::string account_id =
        account_tracker()->SeedAccountInfo(kGaiaId, kEmail);
    auth_service()->UpdateCredentials(account_id, "oauth2_login_token");
  }

  void CreateService(ProfileSyncService::StartBehavior behavior) {
    signin_manager()->SetAuthenticatedAccountInfo(kGaiaId, kEmail);
    component_factory_ = profile_sync_service_bundle_.component_factory();
    ProfileSyncServiceBundle::SyncClientBuilder builder(
        &profile_sync_service_bundle_);
    ProfileSyncService::InitParams init_params =
        profile_sync_service_bundle_.CreateBasicInitParams(behavior,
                                                           builder.Build());
    init_params.model_type_store_factory =
        syncer::ModelTypeStoreTestUtil::FactoryForInMemoryStoreForTest();

    service_ = std::make_unique<ProfileSyncService>(std::move(init_params));
    service_->RegisterDataTypeController(
        std::make_unique<syncer::FakeDataTypeController>(syncer::BOOKMARKS));
  }

  void CreateServiceWithLocalSyncBackend() {
    component_factory_ = profile_sync_service_bundle_.component_factory();
    ProfileSyncServiceBundle::SyncClientBuilder builder(
        &profile_sync_service_bundle_);
    ProfileSyncService::InitParams init_params =
        profile_sync_service_bundle_.CreateBasicInitParams(
            ProfileSyncService::AUTO_START, builder.Build());

    prefs()->SetBoolean(syncer::prefs::kEnableLocalSyncBackend, true);
    init_params.oauth2_token_service = nullptr;
    init_params.gaia_cookie_manager_service = nullptr;
    init_params.signin_wrapper.reset();

    service_ = std::make_unique<ProfileSyncService>(std::move(init_params));
    service_->RegisterDataTypeController(
        std::make_unique<syncer::FakeDataTypeController>(syncer::BOOKMARKS));
  }

  void ShutdownAndDeleteService() {
    if (service_)
      service_->Shutdown();
    service_.reset();
  }

  void InitializeForNthSync() {
    // Set first sync time before initialize to simulate a complete sync setup.
    syncer::SyncPrefs sync_prefs(prefs());
    sync_prefs.SetFirstSyncTime(base::Time::Now());
    sync_prefs.SetFirstSetupComplete();
    sync_prefs.SetKeepEverythingSynced(true);
    service_->Initialize();
  }

  void InitializeForFirstSync() { service_->Initialize(); }

  void TriggerPassphraseRequired() {
    service_->GetEncryptionObserverForTest()->OnPassphraseRequired(
        syncer::REASON_DECRYPTION, sync_pb::EncryptedData());
  }

  void TriggerDataTypeStartRequest() {
    service_->OnDataTypeRequestsSyncStartup(syncer::BOOKMARKS);
  }

  void OnConfigureCalled(syncer::ConfigureReason configure_reason) {
    syncer::DataTypeManager::ConfigureResult result;
    result.status = syncer::DataTypeManager::OK;
    if (configure_reason == syncer::CONFIGURE_REASON_CATCH_UP)
      result.was_catch_up_configure = true;
    service()->OnConfigureDone(result);
  }

  FakeDataTypeManager::ConfigureCalled GetDefaultConfigureCalledCallback() {
    return base::Bind(&ProfileSyncServiceTest::OnConfigureCalled,
                      base::Unretained(this));
  }

  void OnConfigureCalledRecordReason(syncer::ConfigureReason* reason_dest,
                                     syncer::ConfigureReason reason) {
    DCHECK(reason_dest);
    *reason_dest = reason;
  }

  FakeDataTypeManager::ConfigureCalled GetRecordingConfigureCalledCallback(
      syncer::ConfigureReason* reason) {
    return base::Bind(&ProfileSyncServiceTest::OnConfigureCalledRecordReason,
                      base::Unretained(this), reason);
  }

  void ExpectDataTypeManagerCreation(
      int times,
      const FakeDataTypeManager::ConfigureCalled& callback) {
    EXPECT_CALL(*component_factory_, CreateDataTypeManager(_, _, _, _, _, _))
        .Times(times)
        .WillRepeatedly(ReturnNewDataTypeManager(callback));
  }

  void ExpectSyncEngineCreation(int times) {
    EXPECT_CALL(*component_factory_, CreateSyncEngine(_, _, _, _))
        .Times(times)
        .WillRepeatedly(ReturnNewFakeSyncEngine());
  }

  void ExpectSyncEngineCreationCollectDeleteDir(
      int times,
      std::vector<bool>* delete_dir_param) {
    EXPECT_CALL(*component_factory_, CreateSyncEngine(_, _, _, _))
        .Times(times)
        .WillRepeatedly(
            ReturnNewMockHostCollectDeleteDirParam(delete_dir_param));
  }

  void ExpectSyncEngineCreationCaptureClearServerData(
      base::Closure* captured_callback) {
    EXPECT_CALL(*component_factory_, CreateSyncEngine(_, _, _, _))
        .Times(1)
        .WillOnce(ReturnNewMockHostCaptureClearServerData(captured_callback));
  }

  void PrepareDelayedInitSyncEngine() {
    EXPECT_CALL(*component_factory_, CreateSyncEngine(_, _, _, _))
        .WillOnce(ReturnNewSyncEngineNoReturn());
  }

  AccountTrackerService* account_tracker() {
    return profile_sync_service_bundle_.account_tracker();
  }

#if defined(OS_CHROMEOS)
  SigninManagerBase* signin_manager()
#else
  SigninManager* signin_manager()
#endif
  // Opening brace is outside of macro to avoid confusing lint.
  {
    return profile_sync_service_bundle_.signin_manager();
  }

  ProfileOAuth2TokenService* auth_service() {
    return profile_sync_service_bundle_.auth_service();
  }

  ProfileSyncService* service() { return service_.get(); }

  sync_preferences::TestingPrefServiceSyncable* prefs() {
    return profile_sync_service_bundle_.pref_service();
  }

  syncer::SyncApiComponentFactoryMock* component_factory() {
    return component_factory_;
  }

 protected:
  void PumpLoop() {
    base::RunLoop run_loop;
    base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
                                                  run_loop.QuitClosure());
    run_loop.Run();
  }

 private:
  base::test::ScopedTaskEnvironment scoped_task_environment_;
  ProfileSyncServiceBundle profile_sync_service_bundle_;
  std::unique_ptr<ProfileSyncService> service_;

  // The current component factory used by sync. May be null if the server
  // hasn't been created yet.
  syncer::SyncApiComponentFactoryMock* component_factory_;
};

// Verify that the server URLs are sane.
TEST_F(ProfileSyncServiceTest, InitialState) {
  CreateService(ProfileSyncService::AUTO_START);
  InitializeForNthSync();
  const std::string& url = service()->sync_service_url().spec();
  EXPECT_TRUE(url == syncer::internal::kSyncServerUrl ||
              url == syncer::internal::kSyncDevServerUrl);
}

// Verify a successful initialization.
TEST_F(ProfileSyncServiceTest, SuccessfulInitialization) {
  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(false));
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();
  EXPECT_FALSE(service()->IsManaged());
  EXPECT_TRUE(service()->IsSyncActive());
}

// Verify a successful initialization.
TEST_F(ProfileSyncServiceTest, SuccessfulLocalBackendInitialization) {
  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(false));
  CreateServiceWithLocalSyncBackend();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();
  EXPECT_FALSE(service()->IsManaged());
  EXPECT_TRUE(service()->IsSyncActive());
  EXPECT_FALSE(service()->IsSyncConfirmationNeeded());
}

// Verify that an initialization where first setup is not complete does not
// start up the backend.
TEST_F(ProfileSyncServiceTest, NeedsConfirmation) {
  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(false));
  IssueTestTokens();
  CreateService(ProfileSyncService::MANUAL_START);

  syncer::SyncPrefs sync_prefs(prefs());
  base::Time now = base::Time::Now();
  sync_prefs.SetLastSyncedTime(now);
  sync_prefs.SetKeepEverythingSynced(true);
  service()->Initialize();
  EXPECT_FALSE(service()->IsSyncActive());
  EXPECT_TRUE(service()->IsSyncConfirmationNeeded());

  // The last sync time shouldn't be cleared.
  // TODO(zea): figure out a way to check that the directory itself wasn't
  // cleared.
  EXPECT_EQ(now, sync_prefs.GetLastSyncedTime());
}

// Verify that the SetSetupInProgress function call updates state
// and notifies observers.
TEST_F(ProfileSyncServiceTest, SetupInProgress) {
  CreateService(ProfileSyncService::AUTO_START);
  InitializeForFirstSync();

  TestSyncServiceObserver observer(service());
  service()->AddObserver(&observer);

  auto sync_blocker = service()->GetSetupInProgressHandle();
  EXPECT_TRUE(observer.setup_in_progress());
  sync_blocker.reset();
  EXPECT_FALSE(observer.setup_in_progress());

  service()->RemoveObserver(&observer);
}

// Verify that disable by enterprise policy works.
TEST_F(ProfileSyncServiceTest, DisabledByPolicyBeforeInit) {
  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(true));
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  InitializeForNthSync();
  EXPECT_TRUE(service()->IsManaged());
  EXPECT_FALSE(service()->IsSyncActive());
}

// Verify that disable by enterprise policy works even after the backend has
// been initialized.
TEST_F(ProfileSyncServiceTest, DisabledByPolicyAfterInit) {
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();

  EXPECT_FALSE(service()->IsManaged());
  EXPECT_TRUE(service()->IsSyncActive());

  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(true));

  EXPECT_TRUE(service()->IsManaged());
  EXPECT_FALSE(service()->IsSyncActive());
}

// Exercies the ProfileSyncService's code paths related to getting shut down
// before the backend initialize call returns.
TEST_F(ProfileSyncServiceTest, AbortedByShutdown) {
  CreateService(ProfileSyncService::AUTO_START);
  PrepareDelayedInitSyncEngine();

  IssueTestTokens();
  InitializeForNthSync();
  EXPECT_FALSE(service()->IsSyncActive());

  ShutdownAndDeleteService();
}

// Test RequestStop() before we've initialized the backend.
TEST_F(ProfileSyncServiceTest, EarlyRequestStop) {
  CreateService(ProfileSyncService::AUTO_START);
  IssueTestTokens();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);

  service()->RequestStop(ProfileSyncService::KEEP_DATA);
  EXPECT_FALSE(service()->IsSyncRequested());

  // Because sync is not requested, this should fail.
  InitializeForNthSync();
  EXPECT_FALSE(service()->IsSyncRequested());
  EXPECT_FALSE(service()->IsSyncActive());

  // Request start. This should be enough to allow init to happen.
  service()->RequestStart();
  EXPECT_TRUE(service()->IsSyncRequested());
  EXPECT_TRUE(service()->IsSyncActive());
}

// Test RequestStop() after we've initialized the backend.
TEST_F(ProfileSyncServiceTest, DisableAndEnableSyncTemporarily) {
  CreateService(ProfileSyncService::AUTO_START);
  IssueTestTokens();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();

  EXPECT_TRUE(service()->IsSyncActive());
  EXPECT_FALSE(prefs()->GetBoolean(syncer::prefs::kSyncSuppressStart));

  testing::Mock::VerifyAndClearExpectations(component_factory());

  service()->RequestStop(ProfileSyncService::KEEP_DATA);
  EXPECT_FALSE(service()->IsSyncActive());
  EXPECT_TRUE(prefs()->GetBoolean(syncer::prefs::kSyncSuppressStart));

  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);

  service()->RequestStart();
  EXPECT_TRUE(service()->IsSyncActive());
  EXPECT_FALSE(prefs()->GetBoolean(syncer::prefs::kSyncSuppressStart));
}

// Certain ProfileSyncService tests don't apply to Chrome OS, for example
// things that deal with concepts like "signing out" and policy.
#if !defined(OS_CHROMEOS)
TEST_F(ProfileSyncServiceTest, EnableSyncAndSignOut) {
  CreateService(ProfileSyncService::AUTO_START);
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  IssueTestTokens();
  InitializeForNthSync();

  EXPECT_TRUE(service()->IsSyncActive());
  EXPECT_FALSE(prefs()->GetBoolean(syncer::prefs::kSyncSuppressStart));

  signin_manager()->SignOut(signin_metrics::SIGNOUT_TEST,
                            signin_metrics::SignoutDelete::IGNORE_METRIC);
  EXPECT_FALSE(service()->IsSyncActive());
}
#endif  // !defined(OS_CHROMEOS)

TEST_F(ProfileSyncServiceTest, GetSyncTokenStatus) {
  CreateService(ProfileSyncService::AUTO_START);
  IssueTestTokens();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();

  // Initial status.
  ProfileSyncService::SyncTokenStatus token_status =
      service()->GetSyncTokenStatus();
  EXPECT_EQ(syncer::CONNECTION_NOT_ATTEMPTED, token_status.connection_status);
  EXPECT_TRUE(token_status.connection_status_update_time.is_null());
  EXPECT_TRUE(token_status.token_request_time.is_null());
  EXPECT_TRUE(token_status.token_receive_time.is_null());

  // Simulate an auth error.
  service()->OnConnectionStatusChange(syncer::CONNECTION_AUTH_ERROR);

  // The token request will take the form of a posted task.  Run it.
  base::RunLoop loop;
  loop.RunUntilIdle();

  token_status = service()->GetSyncTokenStatus();
  EXPECT_EQ(syncer::CONNECTION_AUTH_ERROR, token_status.connection_status);
  EXPECT_FALSE(token_status.connection_status_update_time.is_null());
  EXPECT_FALSE(token_status.token_request_time.is_null());
  EXPECT_FALSE(token_status.token_receive_time.is_null());
  EXPECT_EQ(GoogleServiceAuthError::AuthErrorNone(),
            token_status.last_get_token_error);
  EXPECT_TRUE(token_status.next_token_request_time.is_null());

  // Simulate successful connection.
  service()->OnConnectionStatusChange(syncer::CONNECTION_OK);
  token_status = service()->GetSyncTokenStatus();
  EXPECT_EQ(syncer::CONNECTION_OK, token_status.connection_status);
}

TEST_F(ProfileSyncServiceTest, RevokeAccessTokenFromTokenService) {
  CreateService(ProfileSyncService::AUTO_START);
  IssueTestTokens();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();
  EXPECT_TRUE(service()->IsSyncActive());

  std::string primary_account_id =
      signin_manager()->GetAuthenticatedAccountId();
  auth_service()->LoadCredentials(primary_account_id);
  base::RunLoop().RunUntilIdle();
  EXPECT_FALSE(service()->GetAccessTokenForTest().empty());

  std::string secondary_account_gaiaid = "1234567";
  std::string secondary_account_name = "test_user2@gmail.com";
  std::string secondary_account_id = account_tracker()->SeedAccountInfo(
      secondary_account_gaiaid, secondary_account_name);
  auth_service()->UpdateCredentials(secondary_account_id,
                                    "second_account_refresh_token");
  auth_service()->RevokeCredentials(secondary_account_id);
  EXPECT_FALSE(service()->GetAccessTokenForTest().empty());

  auth_service()->RevokeCredentials(primary_account_id);
  EXPECT_TRUE(service()->GetAccessTokenForTest().empty());
}

// CrOS does not support signout.
#if !defined(OS_CHROMEOS)
TEST_F(ProfileSyncServiceTest, SignOutRevokeAccessToken) {
  CreateService(ProfileSyncService::AUTO_START);
  IssueTestTokens();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();
  EXPECT_TRUE(service()->IsSyncActive());

  std::string primary_account_id =
      signin_manager()->GetAuthenticatedAccountId();
  auth_service()->LoadCredentials(primary_account_id);
  base::RunLoop().RunUntilIdle();
  EXPECT_FALSE(service()->GetAccessTokenForTest().empty());

  signin_manager()->SignOut(signin_metrics::SIGNOUT_TEST,
                            signin_metrics::SignoutDelete::IGNORE_METRIC);
  EXPECT_TRUE(service()->GetAccessTokenForTest().empty());
}
#endif

// Verify that LastSyncedTime and local DeviceInfo is cleared on sign out.
TEST_F(ProfileSyncServiceTest, ClearDataOnSignOut) {
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();
  EXPECT_TRUE(service()->IsSyncActive());
  EXPECT_LT(base::Time::Now() - service()->GetLastSyncedTime(),
            base::TimeDelta::FromMinutes(1));
  EXPECT_TRUE(service()->GetLocalDeviceInfoProvider()->GetLocalDeviceInfo());

  // Sign out.
  service()->RequestStop(ProfileSyncService::CLEAR_DATA);
  PumpLoop();

  EXPECT_TRUE(service()->GetLastSyncedTime().is_null());
  EXPECT_FALSE(service()->GetLocalDeviceInfoProvider()->GetLocalDeviceInfo());
}

// Verify that the disable sync flag disables sync.
TEST_F(ProfileSyncServiceTest, DisableSyncFlag) {
  base::CommandLine::ForCurrentProcess()->AppendSwitch(switches::kDisableSync);
  EXPECT_FALSE(ProfileSyncService::IsSyncAllowedByFlag());
}

// Verify that no disable sync flag enables sync.
TEST_F(ProfileSyncServiceTest, NoDisableSyncFlag) {
  EXPECT_TRUE(ProfileSyncService::IsSyncAllowedByFlag());
}

// Test Sync will stop after receive memory pressure
TEST_F(ProfileSyncServiceTest, MemoryPressureRecording) {
  CreateService(ProfileSyncService::AUTO_START);
  IssueTestTokens();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();

  EXPECT_TRUE(service()->IsSyncActive());
  EXPECT_FALSE(prefs()->GetBoolean(syncer::prefs::kSyncSuppressStart));

  testing::Mock::VerifyAndClearExpectations(component_factory());

  syncer::SyncPrefs sync_prefs(service()->GetSyncClient()->GetPrefService());

  EXPECT_EQ(prefs()->GetInteger(syncer::prefs::kSyncMemoryPressureWarningCount),
            0);
  EXPECT_FALSE(sync_prefs.DidSyncShutdownCleanly());

  // Simulate memory pressure notification.
  base::MemoryPressureListener::NotifyMemoryPressure(
      base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
  base::RunLoop().RunUntilIdle();

  // Verify memory pressure recorded.
  EXPECT_EQ(prefs()->GetInteger(syncer::prefs::kSyncMemoryPressureWarningCount),
            1);
  EXPECT_FALSE(sync_prefs.DidSyncShutdownCleanly());

  // Simulate memory pressure notification.
  base::MemoryPressureListener::NotifyMemoryPressure(
      base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
  base::RunLoop().RunUntilIdle();
  ShutdownAndDeleteService();

  // Verify memory pressure and shutdown recorded.
  EXPECT_EQ(prefs()->GetInteger(syncer::prefs::kSyncMemoryPressureWarningCount),
            2);
  EXPECT_TRUE(sync_prefs.DidSyncShutdownCleanly());
}

// Verify that OnLocalSetPassphraseEncryption triggers catch up configure sync
// cycle, calls ClearServerData, shuts down and restarts sync.
TEST_F(ProfileSyncServiceTest, OnLocalSetPassphraseEncryption) {
  base::test::ScopedFeatureList scoped_feature_list;
  scoped_feature_list.InitAndEnableFeature(
      switches::kSyncClearDataOnPassphraseEncryption);
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);

  base::Closure captured_callback;
  syncer::ConfigureReason configure_reason = syncer::CONFIGURE_REASON_UNKNOWN;

  // Initialize sync, ensure that both DataTypeManager and SyncEngine are
  // initialized and DTM::Configure is called with
  // CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE.
  ExpectSyncEngineCreationCaptureClearServerData(&captured_callback);
  ExpectDataTypeManagerCreation(
      1, GetRecordingConfigureCalledCallback(&configure_reason));
  InitializeForNthSync();
  EXPECT_TRUE(service()->IsSyncActive());
  testing::Mock::VerifyAndClearExpectations(component_factory());
  EXPECT_EQ(syncer::CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE, configure_reason);
  syncer::DataTypeManager::ConfigureResult result;
  result.status = syncer::DataTypeManager::OK;
  service()->OnConfigureDone(result);

  // Simulate user entering encryption passphrase. Ensure that catch up
  // configure cycle is started (DTM::Configure is called with
  // CONFIGURE_REASON_CATCH_UP).
  const syncer::SyncEncryptionHandler::NigoriState nigori_state;
  service()->GetEncryptionObserverForTest()->OnLocalSetPassphraseEncryption(
      nigori_state);
  EXPECT_EQ(syncer::CONFIGURE_REASON_CATCH_UP, configure_reason);
  EXPECT_TRUE(captured_callback.is_null());

  // Simulate configure successful. Ensure that SBH::ClearServerData is called.
  result.was_catch_up_configure = true;
  service()->OnConfigureDone(result);
  result.was_catch_up_configure = false;
  EXPECT_FALSE(captured_callback.is_null());

  // Once SBH::ClearServerData finishes successfully ensure that sync is
  // restarted.
  configure_reason = syncer::CONFIGURE_REASON_UNKNOWN;
  ExpectSyncEngineCreation(1);
  ExpectDataTypeManagerCreation(
      1, GetRecordingConfigureCalledCallback(&configure_reason));
  captured_callback.Run();
  testing::Mock::VerifyAndClearExpectations(component_factory());
  EXPECT_EQ(syncer::CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE, configure_reason);
  service()->OnConfigureDone(result);
}

// Verify that if after OnLocalSetPassphraseEncryption catch up configure sync
// cycle gets interrupted, it starts again after browser restart.
TEST_F(ProfileSyncServiceTest,
       OnLocalSetPassphraseEncryption_RestartDuringCatchUp) {
  syncer::ConfigureReason configure_reason = syncer::CONFIGURE_REASON_UNKNOWN;
  base::test::ScopedFeatureList scoped_feature_list;
  scoped_feature_list.InitAndEnableFeature(
      switches::kSyncClearDataOnPassphraseEncryption);
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  ExpectSyncEngineCreation(1);
  ExpectDataTypeManagerCreation(
      1, GetRecordingConfigureCalledCallback(&configure_reason));
  InitializeForNthSync();
  testing::Mock::VerifyAndClearExpectations(component_factory());
  EXPECT_EQ(syncer::CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE, configure_reason);
  syncer::DataTypeManager::ConfigureResult result;
  result.status = syncer::DataTypeManager::OK;
  service()->OnConfigureDone(result);

  // Simulate user entering encryption passphrase. Ensure Configure was called
  // but don't let it continue.
  const syncer::SyncEncryptionHandler::NigoriState nigori_state;
  service()->GetEncryptionObserverForTest()->OnLocalSetPassphraseEncryption(
      nigori_state);
  EXPECT_EQ(syncer::CONFIGURE_REASON_CATCH_UP, configure_reason);

  // Simulate browser restart. First configuration is a regular one.
  service()->Shutdown();
  base::Closure captured_callback;
  ExpectSyncEngineCreationCaptureClearServerData(&captured_callback);
  ExpectDataTypeManagerCreation(
      1, GetRecordingConfigureCalledCallback(&configure_reason));
  service()->RequestStart();
  testing::Mock::VerifyAndClearExpectations(component_factory());
  EXPECT_EQ(syncer::CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE, configure_reason);
  EXPECT_TRUE(captured_callback.is_null());

  // Simulate configure successful. This time it should be catch up.
  service()->OnConfigureDone(result);
  EXPECT_EQ(syncer::CONFIGURE_REASON_CATCH_UP, configure_reason);
  EXPECT_TRUE(captured_callback.is_null());

  // Simulate catch up configure successful. Ensure that SBH::ClearServerData is
  // called.
  result.was_catch_up_configure = true;
  service()->OnConfigureDone(result);
  result.was_catch_up_configure = false;
  EXPECT_FALSE(captured_callback.is_null());

  ExpectSyncEngineCreation(1);
  ExpectDataTypeManagerCreation(
      1, GetRecordingConfigureCalledCallback(&configure_reason));
  captured_callback.Run();
  testing::Mock::VerifyAndClearExpectations(component_factory());
  EXPECT_EQ(syncer::CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE, configure_reason);
}

// Verify that if after OnLocalSetPassphraseEncryption ClearServerData gets
// interrupted, transition again from catch up sync cycle after browser restart.
TEST_F(ProfileSyncServiceTest,
       OnLocalSetPassphraseEncryption_RestartDuringClearServerData) {
  base::Closure captured_callback;
  syncer::ConfigureReason configure_reason = syncer::CONFIGURE_REASON_UNKNOWN;
  base::test::ScopedFeatureList scoped_feature_list;
  scoped_feature_list.InitAndEnableFeature(
      switches::kSyncClearDataOnPassphraseEncryption);
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  ExpectSyncEngineCreationCaptureClearServerData(&captured_callback);
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  InitializeForNthSync();
  testing::Mock::VerifyAndClearExpectations(component_factory());

  // Simulate user entering encryption passphrase.
  const syncer::SyncEncryptionHandler::NigoriState nigori_state;
  service()->GetEncryptionObserverForTest()->OnLocalSetPassphraseEncryption(
      nigori_state);
  EXPECT_FALSE(captured_callback.is_null());
  captured_callback.Reset();

  // Simulate browser restart. First configuration is a regular one.
  service()->Shutdown();
  ExpectSyncEngineCreationCaptureClearServerData(&captured_callback);
  ExpectDataTypeManagerCreation(
      1, GetRecordingConfigureCalledCallback(&configure_reason));
  service()->RequestStart();
  testing::Mock::VerifyAndClearExpectations(component_factory());
  EXPECT_EQ(syncer::CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE, configure_reason);
  EXPECT_TRUE(captured_callback.is_null());

  // Simulate configure successful. This time it should be catch up.
  syncer::DataTypeManager::ConfigureResult result;
  result.status = syncer::DataTypeManager::OK;
  service()->OnConfigureDone(result);
  EXPECT_EQ(syncer::CONFIGURE_REASON_CATCH_UP, configure_reason);
  EXPECT_TRUE(captured_callback.is_null());

  // Simulate catch up configure successful. Ensure that SBH::ClearServerData is
  // called.
  result.was_catch_up_configure = true;
  service()->OnConfigureDone(result);
  result.was_catch_up_configure = false;
  EXPECT_FALSE(captured_callback.is_null());

  ExpectSyncEngineCreation(1);
  ExpectDataTypeManagerCreation(
      1, GetRecordingConfigureCalledCallback(&configure_reason));
  captured_callback.Run();
  testing::Mock::VerifyAndClearExpectations(component_factory());
  EXPECT_EQ(syncer::CONFIGURE_REASON_NEWLY_ENABLED_DATA_TYPE, configure_reason);
}

// Test that the passphrase prompt due to version change logic gets triggered
// on a datatype type requesting startup, but only happens once.
TEST_F(ProfileSyncServiceTest, PassphrasePromptDueToVersion) {
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();

  syncer::SyncPrefs sync_prefs(service()->GetSyncClient()->GetPrefService());
  EXPECT_EQ(PRODUCT_VERSION, sync_prefs.GetLastRunVersion());

  sync_prefs.SetPassphrasePrompted(true);

  // Until a datatype requests startup while a passphrase is required the
  // passphrase prompt bit should remain set.
  EXPECT_TRUE(sync_prefs.IsPassphrasePrompted());
  TriggerPassphraseRequired();
  EXPECT_TRUE(sync_prefs.IsPassphrasePrompted());

  // Because the last version was unset, this run should be treated as a new
  // version and force a prompt.
  TriggerDataTypeStartRequest();
  EXPECT_FALSE(sync_prefs.IsPassphrasePrompted());

  // At this point further datatype startup request should have no effect.
  sync_prefs.SetPassphrasePrompted(true);
  TriggerDataTypeStartRequest();
  EXPECT_TRUE(sync_prefs.IsPassphrasePrompted());
}

// Test that when ProfileSyncService receives actionable error
// RESET_LOCAL_SYNC_DATA it restarts sync.
TEST_F(ProfileSyncServiceTest, ResetSyncData) {
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  // Backend should get initialized two times: once during initialization and
  // once when handling actionable error.
  ExpectDataTypeManagerCreation(2, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(2);
  InitializeForNthSync();

  syncer::SyncProtocolError client_cmd;
  client_cmd.action = syncer::RESET_LOCAL_SYNC_DATA;
  service()->OnActionableError(client_cmd);
}

// Test that when ProfileSyncService receives actionable error
// DISABLE_SYNC_ON_CLIENT it disables sync and signs out.
TEST_F(ProfileSyncServiceTest, DisableSyncOnClient) {
  IssueTestTokens();
  CreateService(ProfileSyncService::AUTO_START);
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();

  EXPECT_TRUE(service()->IsSyncActive());
  EXPECT_LT(base::Time::Now() - service()->GetLastSyncedTime(),
            base::TimeDelta::FromMinutes(1));
  EXPECT_TRUE(service()->GetLocalDeviceInfoProvider()->GetLocalDeviceInfo());

  syncer::SyncProtocolError client_cmd;
  client_cmd.action = syncer::DISABLE_SYNC_ON_CLIENT;
  service()->OnActionableError(client_cmd);

// CrOS does not support signout.
#if !defined(OS_CHROMEOS)
  EXPECT_TRUE(signin_manager()->GetAuthenticatedAccountId().empty());
#else
  EXPECT_FALSE(signin_manager()->GetAuthenticatedAccountId().empty());
#endif

  EXPECT_FALSE(service()->IsSyncActive());
  EXPECT_TRUE(service()->GetLastSyncedTime().is_null());
  EXPECT_FALSE(service()->GetLocalDeviceInfoProvider()->GetLocalDeviceInfo());
}

// Verify a that local sync mode resumes after the policy is lifted.
TEST_F(ProfileSyncServiceTest, LocalBackendDisabledByPolicy) {
  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(false));
  CreateServiceWithLocalSyncBackend();
  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);
  InitializeForNthSync();
  EXPECT_FALSE(service()->IsManaged());
  EXPECT_TRUE(service()->IsSyncActive());

  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(true));

  EXPECT_TRUE(service()->IsManaged());
  EXPECT_FALSE(service()->IsSyncActive());

  prefs()->SetManagedPref(syncer::prefs::kSyncManaged,
                          std::make_unique<base::Value>(false));

  ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
  ExpectSyncEngineCreation(1);

  service()->RequestStart();
  EXPECT_FALSE(service()->IsManaged());
  EXPECT_TRUE(service()->IsSyncActive());
}

// Regression test for crbug/555434. The issue is that check for sessions DTC in
// OnSessionRestoreComplete was creating map entry with nullptr which later was
// dereferenced in OnSyncCycleCompleted. The fix is to use find() to check if
// entry for sessions exists in map.
TEST_F(ProfileSyncServiceTest, ValidPointersInDTCMap) {
  CreateService(ProfileSyncService::AUTO_START);
  service()->OnSessionRestoreComplete();
  service()->OnSyncCycleCompleted(syncer::SyncCycleSnapshot());
}

// The OpenTabsUIDelegate should only be accessable when PROXY_TABS is enabled.
TEST_F(ProfileSyncServiceTest, GetOpenTabsUIDelegate) {
  CreateService(ProfileSyncService::AUTO_START);
  InitializeForNthSync();
  EXPECT_EQ(nullptr, service()->GetOpenTabsUIDelegate());

  auto controller =
      std::make_unique<syncer::FakeDataTypeController>(syncer::PROXY_TABS);
  // Progress the controller to RUNNING first, which is how the service
  // determines whether a type is enabled.
  controller->StartAssociating(base::Bind(&DoNothing));
  controller->FinishStart(DataTypeController::OK_FIRST_RUN);
  service()->RegisterDataTypeController(std::move(controller));
  EXPECT_NE(nullptr, service()->GetOpenTabsUIDelegate());
}

}  // namespace
}  // namespace browser_sync