Add AffiliatedInvalidationServiceProvider

chrome/browser/chromeos/policy/affiliated_invalidation_service_provider_unittest.cc

+// 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 "chrome/browser/chromeos/policy/affiliated_invalidation_service_provider.h"
+
+#include <string>
+
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/chromeos/login/users/fake_user_manager.h"
+#include "chrome/browser/chromeos/login/users/scoped_user_manager_enabler.h"
+#include "chrome/browser/chromeos/policy/stub_enterprise_install_attributes.h"
+#include "chrome/browser/chromeos/settings/cros_settings.h"
+#include "chrome/browser/chromeos/settings/device_oauth2_token_service_factory.h"
+#include "chrome/browser/chromeos/settings/device_settings_service.h"
+#include "chrome/browser/invalidation/fake_invalidation_service.h"
+#include "chrome/browser/invalidation/profile_invalidation_provider_factory.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/test/base/testing_browser_process.h"
+#include "chrome/test/base/testing_profile_manager.h"
+#include "chromeos/cryptohome/system_salt_getter.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+#include "components/invalidation/invalidation_service.h"
+#include "components/invalidation/invalidator_state.h"
+#include "components/invalidation/profile_invalidation_provider.h"
+#include "components/invalidation/ticl_invalidation_service.h"
+#include "components/keyed_service/core/keyed_service.h"
+#include "components/policy/core/common/cloud/cloud_policy_constants.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::Mock;
+using testing::StrictMock;
+
+namespace policy {
+
+namespace {
+
+const char kAffiliatedUserID1[] = "test_1@example.com";
+const char kAffiliatedUserID2[] = "test_2@example.com";
+const char kUnaffiliatedUserID[] = "test@other_domain.test";
+
+KeyedService* BuildProfileInvalidationProvider(
+    content::BrowserContext* context) {
+  scoped_ptr<invalidation::FakeInvalidationService> invalidation_service(
+      new invalidation::FakeInvalidationService);
+  invalidation_service->SetInvalidatorState(
+      syncer::TRANSIENT_INVALIDATION_ERROR);
+  return new invalidation::ProfileInvalidationProvider(
+      invalidation_service.Pass());
+}
+
+}  // namespace
+
+class MockConsumer : public AffiliatedInvalidationServiceProvider::Consumer {
+ public:
+  MockConsumer();
+  ~MockConsumer() override;
+
+  MOCK_METHOD1(OnInvalidationServiceSet,
+               void(invalidation::InvalidationService*));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockConsumer);
+};
+
+class AffiliatedInvalidationServiceProviderTest : public testing::Test {
+ public:
+  AffiliatedInvalidationServiceProviderTest();
+
+  // testing::Test:
+  virtual void SetUp() override;
+  virtual void TearDown() override;
+
+  // Ownership is not passed. The Profile is owned by the global ProfileManager.
+  Profile* LogInAndReturnProfile(const std::string& user_id);
+
+  // Logs in as an affiliated user and indicates that the per-profile
+  // invalidation service for this user connected. Verifies that this
+  // invalidation service is made available to the |consumer_| and the
+  // device-global invalidation service is destroyed.
+  void LogInAsAffiliatedUserAndConnectInvalidationService();
+
+  // Logs in as an unaffiliated user and indicates that the per-profile
+  // invalidation service for this user connected. Verifies that this
+  // invalidation service is ignored and the device-global invalidation service
+  // is not destroyed.
+  void LogInAsUnaffiliatedUserAndConnectInvalidationService();
+
+  // Indicates that the device-global invalidation service connected. Verifies
+  // that the |consumer_| is informed about this.
+  void ConnectDeviceGlobalInvalidationService();
+
+  // Indicates that the logged-in user's per-profile invalidation service
+  // disconnected. Verifies that the |consumer_| is informed about this and a
+  // device-global invalidation service is created.
+  void DisconnectPerProfileInvalidationService();
+
+  invalidation::FakeInvalidationService* GetProfileInvalidationService(
+      Profile* profile);
+
+ protected:
+  scoped_ptr<AffiliatedInvalidationServiceProvider> provider_;
+  StrictMock<MockConsumer> consumer_;
+  invalidation::TiclInvalidationService* device_invalidation_service_;
+  invalidation::FakeInvalidationService* profile_invalidation_service_;
+
+ private:
+  content::TestBrowserThreadBundle thread_bundle_;
+  chromeos::FakeUserManager* fake_user_manager_;
+  chromeos::ScopedUserManagerEnabler user_manager_enabler_;
+  ScopedStubEnterpriseInstallAttributes install_attributes_;
+  scoped_ptr<chromeos::ScopedTestDeviceSettingsService>
+      test_device_settings_service_;
+  scoped_ptr<chromeos::ScopedTestCrosSettings> test_cros_settings_;
+  TestingProfileManager profile_manager_;
+};
+
+MockConsumer::MockConsumer() {
+}
+
+MockConsumer::~MockConsumer() {
+}
+
+AffiliatedInvalidationServiceProviderTest::
+AffiliatedInvalidationServiceProviderTest()
+    : device_invalidation_service_(nullptr),
+      profile_invalidation_service_(nullptr),
+      fake_user_manager_(new chromeos::FakeUserManager),
+      user_manager_enabler_(fake_user_manager_),
+      install_attributes_("example.com",
+                          "user@example.com",
+                          "device_id",
+                          DEVICE_MODE_ENTERPRISE),
+      profile_manager_(TestingBrowserProcess::GetGlobal()) {
+}
+
+void AffiliatedInvalidationServiceProviderTest::SetUp() {
+  chromeos::SystemSaltGetter::Initialize();
+  chromeos::DBusThreadManager::Initialize();
+  chromeos::DeviceOAuth2TokenServiceFactory::Initialize();
+  ASSERT_TRUE(profile_manager_.SetUp());
+
+  test_device_settings_service_.reset(new
+      chromeos::ScopedTestDeviceSettingsService);
+  test_cros_settings_.reset(new chromeos::ScopedTestCrosSettings);
+
+  invalidation::ProfileInvalidationProviderFactory::GetInstance()->
+      RegisterTestingFactory(BuildProfileInvalidationProvider);
+
+  provider_.reset(new AffiliatedInvalidationServiceProvider);
+}
+
+void AffiliatedInvalidationServiceProviderTest::TearDown() {
+  provider_.reset();
+
+  invalidation::ProfileInvalidationProviderFactory::GetInstance()->
+      RegisterTestingFactory(nullptr);
+  chromeos::DeviceOAuth2TokenServiceFactory::Shutdown();
+  chromeos::DBusThreadManager::Shutdown();
+  chromeos::SystemSaltGetter::Shutdown();
+}
+
+Profile* AffiliatedInvalidationServiceProviderTest::LogInAndReturnProfile(
+    const std::string& user_id) {
+  fake_user_manager_->AddUser(user_id);
+  Profile* profile = profile_manager_.CreateTestingProfile(user_id);
+  content::NotificationService::current()->Notify(
+      chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
+      content::NotificationService::AllSources(),
+      content::Details<Profile>(profile));
+  return profile;
+}
+
+void AffiliatedInvalidationServiceProviderTest::
+    LogInAsAffiliatedUserAndConnectInvalidationService() {
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Log in as an affiliated user.
+  Profile* profile = LogInAndReturnProfile(kAffiliatedUserID1);
+  EXPECT_TRUE(profile);
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Verify that a per-profile invalidation service has been created.
+  profile_invalidation_service_ = GetProfileInvalidationService(profile);
+  ASSERT_TRUE(profile_invalidation_service_);
+
+  // Verify that the device-global invalidation service still exists.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Indicate that the per-profile invalidation service has connected. Verify
+  // that the consumer is informed about this.
+  EXPECT_CALL(consumer_,
+              OnInvalidationServiceSet(profile_invalidation_service_)).Times(1);
+  profile_invalidation_service_->SetInvalidatorState(
+      syncer::INVALIDATIONS_ENABLED);
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Verify that the device-global invalidation service has been destroyed.
+  EXPECT_FALSE(provider_->GetDeviceInvalidationServiceForTest());
+
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+void AffiliatedInvalidationServiceProviderTest::
+    LogInAsUnaffiliatedUserAndConnectInvalidationService() {
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Log in as an unaffiliated user.
+  Profile* profile = LogInAndReturnProfile(kUnaffiliatedUserID);
+  EXPECT_TRUE(profile);
+
+  // Verify that a per-profile invalidation service has been created.
+  profile_invalidation_service_ = GetProfileInvalidationService(profile);
+  ASSERT_TRUE(profile_invalidation_service_);
+
+  // Verify that the device-global invalidation service still exists.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Indicate that the per-profile invalidation service has connected. Verify
+  // that the consumer is not called back.
+  profile_invalidation_service_->SetInvalidatorState(
+      syncer::INVALIDATIONS_ENABLED);
+
+  // Verify that the device-global invalidation service still exists.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+void AffiliatedInvalidationServiceProviderTest::
+    ConnectDeviceGlobalInvalidationService() {
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Verify that a device-global invalidation service has been created.
+  device_invalidation_service_ =
+      provider_->GetDeviceInvalidationServiceForTest();
+  ASSERT_TRUE(device_invalidation_service_);
+
+  // Indicate that the device-global invalidation service has connected. Verify
+  // that the consumer is informed about this.
+  EXPECT_CALL(consumer_, OnInvalidationServiceSet(device_invalidation_service_))
+      .Times(1);
+  device_invalidation_service_->OnInvalidatorStateChange(
+      syncer::INVALIDATIONS_ENABLED);
+
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+void AffiliatedInvalidationServiceProviderTest::
+    DisconnectPerProfileInvalidationService() {
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  ASSERT_TRUE(profile_invalidation_service_);
+
+  // Indicate that the per-profile invalidation service has disconnected. Verify
+  // that the consumer is informed about this.
+  EXPECT_CALL(consumer_, OnInvalidationServiceSet(nullptr)).Times(1);
+  profile_invalidation_service_->SetInvalidatorState(
+      syncer::INVALIDATION_CREDENTIALS_REJECTED);
+
+  // Verify that a device-global invalidation service has been created.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+invalidation::FakeInvalidationService*
+AffiliatedInvalidationServiceProviderTest::GetProfileInvalidationService(
+    Profile* profile) {
+  invalidation::ProfileInvalidationProvider* invalidation_provider =
+      static_cast<invalidation::ProfileInvalidationProvider*>(
+          invalidation::ProfileInvalidationProviderFactory::GetInstance()->
+              GetServiceForBrowserContext(profile, false));
+  if (!invalidation_provider)
+    return nullptr;
+  return static_cast<invalidation::FakeInvalidationService*>(
+      invalidation_provider->GetInvalidationService());
+}
+
+// No consumers are registered with the AffiliatedInvalidationServiceProvider.
+// Verifies that no device-global invalidation service is created, whether an
+// affiliated user is logged in or not.
+TEST_F(AffiliatedInvalidationServiceProviderTest, NoConsumers) {
+  // Verify that no device-global invalidation service has been created.
+  EXPECT_FALSE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Log in as an affiliated user.
+  EXPECT_TRUE(LogInAndReturnProfile(kAffiliatedUserID1));
+
+  // Verify that no device-global invalidation service has been created.
+  EXPECT_FALSE(provider_->GetDeviceInvalidationServiceForTest());
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider.
+// Verifies that when no per-profile invalidation service belonging to an
+// affiliated user is available, a device-global invalidation service is
+// created. Further verifies that when the device-global invalidation service
+// connects, it is made available to the consumer.
+TEST_F(AffiliatedInvalidationServiceProviderTest,
+       UseDeviceInvalidationService) {
+  // Register a consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Indicate that the device-global invalidation service connected. Verify that
+  // that the consumer is informed about this.
+  ConnectDeviceGlobalInvalidationService();
+
+  // Indicate that the device-global invalidation service has disconnected.
+  // Verify that the consumer is informed about this.
+  EXPECT_CALL(consumer_, OnInvalidationServiceSet(nullptr)).Times(1);
+  device_invalidation_service_->OnInvalidatorStateChange(
+      syncer::INVALIDATION_CREDENTIALS_REJECTED);
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Verify that the device-global invalidation service still exists.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Unregister the consumer.
+  provider_->UnregisterConsumer(&consumer_);
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider.
+// Verifies that when a per-profile invalidation service belonging to an
+// affiliated user connects, it is made available to the consumer.
+TEST_F(AffiliatedInvalidationServiceProviderTest,
+       UseAffiliatedProfileInvalidationService) {
+  // Register a consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Verify that a device-global invalidation service has been created.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Log in as an affiliated user and indicate that the per-profile invalidation
+  // service for this user connected. Verify that this invalidation service is
+  // made available to the |consumer_| and the device-global invalidation
+  // service is destroyed.
+  LogInAsAffiliatedUserAndConnectInvalidationService();
+
+  // Indicate that the logged-in user's per-profile invalidation service
+  // disconnected. Verify that the consumer is informed about this and a
+  // device-global invalidation service is created.
+  DisconnectPerProfileInvalidationService();
+
+  // Unregister the consumer.
+  provider_->UnregisterConsumer(&consumer_);
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider.
+// Verifies that when a per-profile invalidation service belonging to an
+// unaffiliated user connects, it is ignored.
+TEST_F(AffiliatedInvalidationServiceProviderTest,
+       DoNotUseUnaffiliatedProfileInvalidationService) {
+  // Register a consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Verify that a device-global invalidation service has been created.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Log in as an unaffiliated user and indicate that the per-profile
+  // invalidation service for this user connected. Verify that this invalidation
+  // service is ignored and the device-global invalidation service is not
+  // destroyed.
+  LogInAsUnaffiliatedUserAndConnectInvalidationService();
+
+  // Unregister the consumer.
+  provider_->UnregisterConsumer(&consumer_);
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider. A
+// device-global invalidation service exists, is connected and is made available
+// to the consumer. Verifies that when a per-profile invalidation service
+// belonging to an affiliated user connects, it is made available to the
+// consumer instead and the device-global invalidation service is destroyed.
+TEST_F(AffiliatedInvalidationServiceProviderTest,
+       SwitchToAffiliatedProfileInvalidationService) {
+  // Register a consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Indicate that the device-global invalidation service connected. Verify that
+  // that the consumer is informed about this.
+  ConnectDeviceGlobalInvalidationService();
+
+  // Log in as an affiliated user and indicate that the per-profile invalidation
+  // service for this user connected. Verify that this invalidation service is
+  // made available to the |consumer_| and the device-global invalidation
+  // service is destroyed.
+  LogInAsAffiliatedUserAndConnectInvalidationService();
+
+  // Unregister the consumer.
+  provider_->UnregisterConsumer(&consumer_);
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider. A
+// device-global invalidation service exists, is connected and is made available
+// to the consumer. Verifies that when a per-profile invalidation service
+// belonging to an unaffiliated user connects, it is ignored and the
+// device-global invalidation service continues to be made available to the
+// consumer.
+TEST_F(AffiliatedInvalidationServiceProviderTest,
+       DoNotSwitchToUnaffiliatedProfileInvalidationService) {
+  // Register a consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Indicate that the device-global invalidation service connected. Verify that
+  // that the consumer is informed about this.
+  ConnectDeviceGlobalInvalidationService();
+
+  // Log in as an unaffiliated user and indicate that the per-profile
+  // invalidation service for this user connected. Verify that this invalidation
+  // service is ignored and the device-global invalidation service is not
+  // destroyed.
+  LogInAsUnaffiliatedUserAndConnectInvalidationService();
+
+  // Unregister the consumer.
+  provider_->UnregisterConsumer(&consumer_);
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider. A
+// per-profile invalidation service belonging to an affiliated user exists, is
+// connected and is made available to the consumer. Verifies that when the
+// per-profile invalidation service disconnects, a device-global invalidation
+// service is created. Further verifies that when the device-global invalidation
+// service connects, it is made available to the consumer.
+TEST_F(AffiliatedInvalidationServiceProviderTest,
+       SwitchToDeviceInvalidationService) {
+  // Register a consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Verify that a device-global invalidation service has been created.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Log in as an affiliated user and indicate that the per-profile invalidation
+  // service for this user connected. Verify that this invalidation service is
+  // made available to the |consumer_| and the device-global invalidation
+  // service is destroyed.
+  LogInAsAffiliatedUserAndConnectInvalidationService();
+
+  // Indicate that the logged-in user's per-profile invalidation service
+  // disconnected. Verify that the consumer is informed about this and a
+  // device-global invalidation service is created.
+  DisconnectPerProfileInvalidationService();
+
+  // Indicate that the device-global invalidation service connected. Verify that
+  // that the consumer is informed about this.
+  ConnectDeviceGlobalInvalidationService();
+
+  // Unregister the consumer.
+  provider_->UnregisterConsumer(&consumer_);
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider. A
+// per-profile invalidation service belonging to a first affiliated user exists,
+// is connected and is made available to the consumer. A per-profile
+// invalidation service belonging to a second affiliated user also exists and is
+// connected. Verifies that when the per-profile invalidation service belonging
+// to the first user disconnects, the per-profile invalidation service belonging
+// to the second user is made available to the consumer instead.
+TEST_F(AffiliatedInvalidationServiceProviderTest,
+       SwitchBetweenAffiliatedProfileInvalidationServices) {
+  // Register a consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Verify that a device-global invalidation service has been created.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Log in as a first affiliated user and indicate that the per-profile
+  // invalidation service for this user connected. Verify that this invalidation
+  // service is made available to the |consumer_| and the device-global
+  // invalidation service is destroyed.
+  LogInAsAffiliatedUserAndConnectInvalidationService();
+
+  // Log in as a second affiliated user.
+  Profile* second_profile = LogInAndReturnProfile(kAffiliatedUserID2);
+  EXPECT_TRUE(second_profile);
+
+  // Verify that the device-global invalidation service still does not exist.
+  EXPECT_FALSE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Verify that a per-profile invalidation service for the second user has been
+  // created.
+  invalidation::FakeInvalidationService* second_profile_invalidation_service =
+      GetProfileInvalidationService(second_profile);
+  ASSERT_TRUE(second_profile_invalidation_service);
+
+  // Indicate that the second user's per-profile invalidation service has
+  // connected. Verify that the consumer is not called back.
+  second_profile_invalidation_service->SetInvalidatorState(
+      syncer::INVALIDATIONS_ENABLED);
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Indicate that the first user's per-profile invalidation service has
+  // disconnected. Verify that the consumer is informed that the second user's
+  // per-profile invalidation service should be used instead of the first
+  // user's.
+  EXPECT_CALL(consumer_,
+              OnInvalidationServiceSet(second_profile_invalidation_service))
+      .Times(1);
+  profile_invalidation_service_->SetInvalidatorState(
+      syncer::INVALIDATION_CREDENTIALS_REJECTED);
+  Mock::VerifyAndClearExpectations(&consumer_);
+
+  // Verify that the device-global invalidation service still does not exist.
+  EXPECT_FALSE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Unregister the consumer.
+  provider_->UnregisterConsumer(&consumer_);
+  Mock::VerifyAndClearExpectations(&consumer_);
+}
+
+// A consumer is registered with the AffiliatedInvalidationServiceProvider. A
+// device-global invalidation service exists, is connected and is made available
+// to the consumer. Verifies that when a second consumer registers, the
+// device-global invalidation service is made available to it as well. Further
+// verifies that when the first consumer unregisters, the device-global
+// invalidation service is not destroyed and remains available to the second
+// consumer. Further verifies that when the second consumer also unregisters,
+// the device-global invalidation service is destroyed.
+TEST_F(AffiliatedInvalidationServiceProviderTest, MultipleConsumers) {
+  // Register a first consumer. Verify that the consumer is not called back
+  // immediately as no connected invalidation service exists yet.
+  provider_->RegisterConsumer(&consumer_);
+
+  // Indicate that the device-global invalidation service connected. Verify that
+  // that the consumer is informed about this.
+  ConnectDeviceGlobalInvalidationService();
+
+  // Register a second consumer. Verify that the consumer is called back
+  // immediately as a connected invalidation service is available.
+  StrictMock<MockConsumer> second_consumer;
+  EXPECT_CALL(second_consumer,
+              OnInvalidationServiceSet(device_invalidation_service_)).Times(1);
+  provider_->RegisterConsumer(&second_consumer);
+  Mock::VerifyAndClearExpectations(&second_consumer);
+
+  // Unregister the first consumer.
+  provider_->UnregisterConsumer(&consumer_);
+
+  // Verify that the device-global invalidation service still exists.
+  EXPECT_TRUE(provider_->GetDeviceInvalidationServiceForTest());
+
+  // Unregister the second consumer.
+  provider_->UnregisterConsumer(&second_consumer);
+
+  // Verify that the device-global invalidation service has been destroyed.
+  EXPECT_FALSE(provider_->GetDeviceInvalidationServiceForTest());
+  Mock::VerifyAndClearExpectations(&consumer_);
+  Mock::VerifyAndClearExpectations(&second_consumer);
+}
+
+}  // namespace policy