Cache force-installed apps/extensions in device-local accounts

chrome/browser/chromeos/policy/device_local_account_policy_service_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 "chrome/browser/chromeos/policy/device_local_account_policy_service.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
+#include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "base/files/scoped_temp_dir.h"
+#include "base/path_service.h"
+#include "base/run_loop.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/stringprintf.h"
+#include "base/test/scoped_path_override.h"
+#include "base/test/test_simple_task_runner.h"
 #include "chrome/browser/chromeos/policy/device_local_account.h"
 #include "chrome/browser/chromeos/policy/device_local_account_policy_provider.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
 #include "chrome/browser/chromeos/settings/device_settings_test_helper.h"
 #include "chrome/browser/policy/cloud/cloud_policy_client.h"
 #include "chrome/browser/policy/cloud/cloud_policy_constants.h"
 #include "chrome/browser/policy/cloud/cloud_policy_service.h"
 #include "chrome/browser/policy/cloud/mock_device_management_service.h"
 #include "chrome/browser/policy/cloud/policy_builder.h"
 #include "chrome/browser/policy/external_data_fetcher.h"
 #include "chrome/browser/policy/mock_configuration_policy_provider.h"
 #include "chrome/browser/policy/proto/chromeos/chrome_device_policy.pb.h"
+#include "chrome/common/chrome_paths.h"
+#include "chromeos/chromeos_paths.h"
 #include "chromeos/dbus/power_policy_controller.h"
 #include "policy/policy_constants.h"
+#include "policy/proto/cloud_policy.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::AnyNumber;
 using testing::AtLeast;
 using testing::Mock;
 using testing::SaveArg;
 using testing::_;
 
 namespace em = enterprise_management;
 
 namespace policy {
 
+namespace {
+
+const char kAccount1[] = "account1@localhost";
+const char kAccount2[] = "account2@localhost";
+const char kAccount3[] = "account3@localhost";
+
+const char kExtensionID[] = "kbmnembihfiondgfjekmnmcbddelicoi";
+const char kExtensionVersion[] = "1.0.0.0";
+const char kExtensionCRXPath[] = "extensions/hosted_app.crx";
+const char kUpdateURL[] = "https://clients2.google.com/service/update2/crx";
+
+}  // namespace
+
 class MockDeviceLocalAccountPolicyServiceObserver
     : public DeviceLocalAccountPolicyService::Observer {
  public:
   MOCK_METHOD1(OnPolicyUpdated, void(const std::string&));
   MOCK_METHOD0(OnDeviceLocalAccountsChanged, void(void));
 };
 
-class DeviceLocalAccountPolicyServiceTest
+class DeviceLocalAccountPolicyServiceTestBase
     : public chromeos::DeviceSettingsTestBase {
  public:
-  DeviceLocalAccountPolicyServiceTest()
-      : public_session_user_id_(GenerateDeviceLocalAccountUserId(
-            PolicyBuilder::kFakeUsername,
-            DeviceLocalAccount::TYPE_PUBLIC_SESSION)),
-        cros_settings_(&device_settings_service_),
-        service_(&device_settings_test_helper_,
-                 &device_settings_service_,
-                 &cros_settings_) {}
-
-  virtual void SetUp() OVERRIDE {
-    DeviceSettingsTestBase::SetUp();
-
-    // Values implicitly enforced for public accounts.
-    expected_policy_map_.Set(key::kLidCloseAction,
-                             POLICY_LEVEL_MANDATORY,
-                             POLICY_SCOPE_USER,
-                             base::Value::CreateIntegerValue(
-                                 chromeos::PowerPolicyController::
-                                     ACTION_STOP_SESSION),
-                             NULL);
-    expected_policy_map_.Set(key::kShelfAutoHideBehavior,
-                             POLICY_LEVEL_MANDATORY,
-                             POLICY_SCOPE_USER,
-                             Value::CreateStringValue("Never"),
-                             NULL);
-    expected_policy_map_.Set(key::kShowLogoutButtonInTray,
-                             POLICY_LEVEL_MANDATORY,
-                             POLICY_SCOPE_USER,
-                             Value::CreateBooleanValue(true),
-                             NULL);
-    expected_policy_map_.Set(key::kFullscreenAllowed,
-                             POLICY_LEVEL_MANDATORY,
-                             POLICY_SCOPE_USER,
-                             Value::CreateBooleanValue(false),
-                             NULL);
-
-    // Explicitly set value.
-    expected_policy_map_.Set(key::kDisableSpdy,
-                             POLICY_LEVEL_MANDATORY,
-                             POLICY_SCOPE_USER,
-                             Value::CreateBooleanValue(true),
-                             NULL);
-
-    device_local_account_policy_.payload().mutable_disablespdy()->set_value(
-        true);
-    device_local_account_policy_.policy_data().set_policy_type(
-        dm_protocol::kChromePublicAccountPolicyType);
-    device_local_account_policy_.policy_data().set_settings_entity_id(
-        PolicyBuilder::kFakeUsername);
-    device_local_account_policy_.Build();
-
-    em::DeviceLocalAccountInfoProto* account =
-        device_policy_.payload().mutable_device_local_accounts()->add_account();
-    account->set_account_id(PolicyBuilder::kFakeUsername);
-    account->set_type(
-        em::DeviceLocalAccountInfoProto::ACCOUNT_TYPE_PUBLIC_SESSION);
-    device_policy_.Build();
-
-    service_.AddObserver(&service_observer_);
-  }
-
-  virtual void TearDown() OVERRIDE {
-    service_.RemoveObserver(&service_observer_);
-
-    DeviceSettingsTestBase::TearDown();
-  }
-
-  void InstallDevicePolicy() {
-    EXPECT_CALL(service_observer_, OnDeviceLocalAccountsChanged());
-    device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-    ReloadDeviceSettings();
-    Mock::VerifyAndClearExpectations(&service_observer_);
-  }
-
-  MOCK_METHOD1(OnRefreshDone, void(bool));
-
-  const std::string public_session_user_id_;
+  DeviceLocalAccountPolicyServiceTestBase();
+
+  virtual void SetUp() OVERRIDE;
+
+  void CreatePolicyService();
+
+  void InstallDeviceLocalAccountPolicy(const std::string& account_id);
+  void AddDeviceLocalAccountToPolicy(const std::string& account_id);
+  virtual void InstallDevicePolicy();
+
+  const std::string account_1_user_id_;
+  const std::string account_2_user_id_;
 
   PolicyMap expected_policy_map_;
   UserPolicyBuilder device_local_account_policy_;
   chromeos::CrosSettings cros_settings_;
+  scoped_refptr<base::TestSimpleTaskRunner> extension_cache_task_runner_;
+  MockDeviceManagementService mock_device_management_service_;
+  scoped_ptr<DeviceLocalAccountPolicyService> service_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountPolicyServiceTestBase);
+};
+
+class DeviceLocalAccountPolicyServiceTest
+    : public DeviceLocalAccountPolicyServiceTestBase {
+ public:
+  MOCK_METHOD1(OnRefreshDone, void(bool));
+
+ protected:
+  DeviceLocalAccountPolicyServiceTest();
+
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+
+  void InstallDevicePolicy() OVERRIDE;
+
   MockDeviceLocalAccountPolicyServiceObserver service_observer_;
-  MockDeviceManagementService mock_device_management_service_;
-  DeviceLocalAccountPolicyService service_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountPolicyServiceTest);
 };
 
+DeviceLocalAccountPolicyServiceTestBase::
+    DeviceLocalAccountPolicyServiceTestBase()
+    : account_1_user_id_(GenerateDeviceLocalAccountUserId(
+          kAccount1,
+          DeviceLocalAccount::TYPE_PUBLIC_SESSION)),
+      account_2_user_id_(GenerateDeviceLocalAccountUserId(
+          kAccount2,
+          DeviceLocalAccount::TYPE_PUBLIC_SESSION)),
+      cros_settings_(&device_settings_service_),
+      extension_cache_task_runner_(new base::TestSimpleTaskRunner) {
+}
+
+void DeviceLocalAccountPolicyServiceTestBase::SetUp() {
+  chromeos::DeviceSettingsTestBase::SetUp();
+
+  // Values implicitly enforced for public accounts.
+  expected_policy_map_.Set(key::kLidCloseAction,
+                           POLICY_LEVEL_MANDATORY,
+                           POLICY_SCOPE_USER,
+                           base::Value::CreateIntegerValue(
+                               chromeos::PowerPolicyController::
+                                   ACTION_STOP_SESSION),
+                           NULL);
+  expected_policy_map_.Set(key::kShelfAutoHideBehavior,
+                           POLICY_LEVEL_MANDATORY,
+                           POLICY_SCOPE_USER,
+                           Value::CreateStringValue("Never"),
+                           NULL);
+  expected_policy_map_.Set(key::kShowLogoutButtonInTray,
+                           POLICY_LEVEL_MANDATORY,
+                           POLICY_SCOPE_USER,
+                           Value::CreateBooleanValue(true),
+                           NULL);
+  expected_policy_map_.Set(key::kFullscreenAllowed,
+                           POLICY_LEVEL_MANDATORY,
+                           POLICY_SCOPE_USER,
+                           Value::CreateBooleanValue(false),
+                           NULL);
+
+  // Explicitly set value.
+  expected_policy_map_.Set(key::kDisableSpdy,
+                           POLICY_LEVEL_MANDATORY,
+                           POLICY_SCOPE_USER,
+                           Value::CreateBooleanValue(true),
+                           NULL);
+
+  device_local_account_policy_.payload().mutable_disablespdy()->set_value(
+      true);
+  device_local_account_policy_.policy_data().set_policy_type(
+      dm_protocol::kChromePublicAccountPolicyType);
+}
+
+void DeviceLocalAccountPolicyServiceTestBase::CreatePolicyService() {
+  service_.reset(new DeviceLocalAccountPolicyService(
+      &device_settings_test_helper_,
+      &device_settings_service_,
+      &cros_settings_,
+      extension_cache_task_runner_));
+}
+
+void DeviceLocalAccountPolicyServiceTestBase::
+    InstallDeviceLocalAccountPolicy(const std::string& account_id) {
+  device_local_account_policy_.policy_data().set_settings_entity_id(account_id);
+  device_local_account_policy_.policy_data().set_username(account_id);
+  device_local_account_policy_.Build();
+  device_settings_test_helper_.set_device_local_account_policy_blob(
+      account_id, device_local_account_policy_.GetBlob());
+}
+
+void DeviceLocalAccountPolicyServiceTestBase::AddDeviceLocalAccountToPolicy(
+    const std::string& account_id) {
+  em::DeviceLocalAccountInfoProto* account =
+      device_policy_.payload().mutable_device_local_accounts()->add_account();
+  account->set_account_id(account_id);
+  account->set_type(
+      em::DeviceLocalAccountInfoProto::ACCOUNT_TYPE_PUBLIC_SESSION);
+}
+
+void DeviceLocalAccountPolicyServiceTestBase::InstallDevicePolicy() {
+  device_policy_.Build();
+  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
+  ReloadDeviceSettings();
+}
+
+DeviceLocalAccountPolicyServiceTest::DeviceLocalAccountPolicyServiceTest() {
+  CreatePolicyService();
+}
+
+void DeviceLocalAccountPolicyServiceTest::SetUp() {
+  DeviceLocalAccountPolicyServiceTestBase::SetUp();
+  service_->AddObserver(&service_observer_);
+}
+
+void DeviceLocalAccountPolicyServiceTest::TearDown() {
+  service_->RemoveObserver(&service_observer_);
+  DeviceLocalAccountPolicyServiceTestBase::TearDown();
+}
+
+void DeviceLocalAccountPolicyServiceTest::InstallDevicePolicy() {
+  EXPECT_CALL(service_observer_, OnDeviceLocalAccountsChanged());
+  DeviceLocalAccountPolicyServiceTestBase::InstallDevicePolicy();
+  Mock::VerifyAndClearExpectations(&service_observer_);
+}
+
 TEST_F(DeviceLocalAccountPolicyServiceTest, NoAccounts) {
-  EXPECT_FALSE(service_.GetBrokerForUser(public_session_user_id_));
+  EXPECT_FALSE(service_->GetBrokerForUser(account_1_user_id_));
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, GetBroker) {
-  InstallDevicePolicy();
-
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-  EXPECT_EQ(public_session_user_id_, broker->user_id());
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_EQ(account_1_user_id_, broker->user_id());
   ASSERT_TRUE(broker->core()->store());
   EXPECT_EQ(CloudPolicyStore::STATUS_OK, broker->core()->store()->status());
   EXPECT_FALSE(broker->core()->client());
-  EXPECT_TRUE(broker->core()->store()->policy_map().empty());
+  EXPECT_FALSE(broker->core()->store()->policy_map().empty());
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, LoadNoPolicy) {
-  InstallDevicePolicy();
-
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-  FlushDeviceSettings();
-  Mock::VerifyAndClearExpectations(&service_observer_);
-
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_EQ(account_1_user_id_, broker->user_id());
   ASSERT_TRUE(broker->core()->store());
   EXPECT_EQ(CloudPolicyStore::STATUS_LOAD_ERROR,
             broker->core()->store()->status());
   EXPECT_TRUE(broker->core()->store()->policy_map().empty());
-  EXPECT_FALSE(service_.IsPolicyAvailableForUser(public_session_user_id_));
+  EXPECT_FALSE(service_->IsPolicyAvailableForUser(account_1_user_id_));
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, LoadValidationFailure) {
   device_local_account_policy_.policy_data().set_policy_type(
       dm_protocol::kChromeUserPolicyType);
-  device_local_account_policy_.Build();
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  InstallDevicePolicy();
-
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-  FlushDeviceSettings();
-  Mock::VerifyAndClearExpectations(&service_observer_);
-
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_EQ(account_1_user_id_, broker->user_id());
   ASSERT_TRUE(broker->core()->store());
   EXPECT_EQ(CloudPolicyStore::STATUS_VALIDATION_ERROR,
             broker->core()->store()->status());
   EXPECT_TRUE(broker->core()->store()->policy_map().empty());
-  EXPECT_FALSE(service_.IsPolicyAvailableForUser(public_session_user_id_));
+  EXPECT_FALSE(service_->IsPolicyAvailableForUser(account_1_user_id_));
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, LoadPolicy) {
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  InstallDevicePolicy();
-
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-  FlushDeviceSettings();
-  Mock::VerifyAndClearExpectations(&service_observer_);
-
-  ASSERT_TRUE(broker->core()->store());
-  EXPECT_EQ(CloudPolicyStore::STATUS_OK,
-            broker->core()->store()->status());
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_EQ(account_1_user_id_, broker->user_id());
+  ASSERT_TRUE(broker->core()->store());
+  EXPECT_EQ(CloudPolicyStore::STATUS_OK, broker->core()->store()->status());
   ASSERT_TRUE(broker->core()->store()->policy());
   EXPECT_EQ(device_local_account_policy_.policy_data().SerializeAsString(),
             broker->core()->store()->policy()->SerializeAsString());
   EXPECT_TRUE(expected_policy_map_.Equals(
       broker->core()->store()->policy_map()));
-  EXPECT_TRUE(service_.IsPolicyAvailableForUser(public_session_user_id_));
+  EXPECT_TRUE(service_->IsPolicyAvailableForUser(account_1_user_id_));
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, StoreValidationFailure) {
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+  Mock::VerifyAndClearExpectations(&service_observer_);
+
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_EQ(account_1_user_id_, broker->user_id());
+  ASSERT_TRUE(broker->core()->store());
+
   device_local_account_policy_.policy_data().set_policy_type(
       dm_protocol::kChromeUserPolicyType);
   device_local_account_policy_.Build();
-  InstallDevicePolicy();
-
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-  ASSERT_TRUE(broker->core()->store());
   broker->core()->store()->Store(device_local_account_policy_.policy());
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
   FlushDeviceSettings();
-  Mock::VerifyAndClearExpectations(&service_observer_);
-
-  ASSERT_TRUE(broker->core()->store());
+
   EXPECT_EQ(CloudPolicyStore::STATUS_VALIDATION_ERROR,
             broker->core()->store()->status());
   EXPECT_EQ(CloudPolicyValidatorBase::VALIDATION_WRONG_POLICY_TYPE,
             broker->core()->store()->validation_status());
-  EXPECT_FALSE(service_.IsPolicyAvailableForUser(public_session_user_id_));
+  EXPECT_FALSE(service_->IsPolicyAvailableForUser(account_1_user_id_));
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, StorePolicy) {
-  InstallDevicePolicy();
-
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-  ASSERT_TRUE(broker->core()->store());
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+  Mock::VerifyAndClearExpectations(&service_observer_);
+
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_EQ(account_1_user_id_, broker->user_id());
+  ASSERT_TRUE(broker->core()->store());
+
+  device_local_account_policy_.policy_data().set_settings_entity_id(kAccount1);
+  device_local_account_policy_.policy_data().set_username(kAccount1);
+  device_local_account_policy_.Build();
   broker->core()->store()->Store(device_local_account_policy_.policy());
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
   FlushDeviceSettings();
+
+  EXPECT_EQ(CloudPolicyStore::STATUS_OK, broker->core()->store()->status());
+  ASSERT_TRUE(broker->core()->store()->policy());
+  EXPECT_EQ(device_local_account_policy_.policy_data().SerializeAsString(),
+            broker->core()->store()->policy()->SerializeAsString());
+  EXPECT_TRUE(expected_policy_map_.Equals(
+      broker->core()->store()->policy_map()));
+  EXPECT_TRUE(service_->IsPolicyAvailableForUser(account_1_user_id_));
+}
+
+TEST_F(DeviceLocalAccountPolicyServiceTest, DevicePolicyChange) {
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+
+  device_policy_.payload().mutable_device_local_accounts()->clear_account();
+  InstallDevicePolicy();
+
+  EXPECT_FALSE(service_->GetBrokerForUser(account_1_user_id_));
+}
+
+TEST_F(DeviceLocalAccountPolicyServiceTest, DuplicateAccounts) {
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
   Mock::VerifyAndClearExpectations(&service_observer_);
 
-  EXPECT_EQ(device_local_account_policy_.GetBlob(),
-            device_settings_test_helper_.device_local_account_policy_blob(
-                PolicyBuilder::kFakeUsername));
-  EXPECT_TRUE(service_.IsPolicyAvailableForUser(public_session_user_id_));
-}
-
-TEST_F(DeviceLocalAccountPolicyServiceTest, DevicePolicyChange) {
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  InstallDevicePolicy();
-
-  EXPECT_CALL(service_observer_, OnDeviceLocalAccountsChanged());
-  device_policy_.payload().mutable_device_local_accounts()->clear_account();
-  device_policy_.Build();
-  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-  device_settings_service_.PropertyChangeComplete(true);
-  FlushDeviceSettings();
-  EXPECT_FALSE(service_.GetBrokerForUser(public_session_user_id_));
-  Mock::VerifyAndClearExpectations(&service_observer_);
-}
-
-TEST_F(DeviceLocalAccountPolicyServiceTest, DuplicateAccounts) {
-  InstallDevicePolicy();
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-
   // Add a second entry with a duplicate account name to device policy.
-  em::DeviceLocalAccountInfoProto* account =
-      device_policy_.payload().mutable_device_local_accounts()->add_account();
-  account->set_account_id(PolicyBuilder::kFakeUsername);
-  account->set_type(
-      em::DeviceLocalAccountInfoProto::ACCOUNT_TYPE_PUBLIC_SESSION);
-  device_policy_.Build();
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-
-  EXPECT_CALL(service_observer_, OnDeviceLocalAccountsChanged());
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
-  device_settings_service_.PropertyChangeComplete(true);
-  FlushDeviceSettings();
-  Mock::VerifyAndClearExpectations(&service_observer_);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
 
   // Make sure the broker is accessible and policy got loaded.
-  broker = service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-  EXPECT_EQ(public_session_user_id_, broker->user_id());
-  EXPECT_TRUE(broker->core()->store()->policy());
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_EQ(account_1_user_id_, broker->user_id());
+  ASSERT_TRUE(broker->core()->store());
+  EXPECT_EQ(CloudPolicyStore::STATUS_OK, broker->core()->store()->status());
+  ASSERT_TRUE(broker->core()->store()->policy());
+  EXPECT_EQ(device_local_account_policy_.policy_data().SerializeAsString(),
+            broker->core()->store()->policy()->SerializeAsString());
+  EXPECT_TRUE(expected_policy_map_.Equals(
+      broker->core()->store()->policy_map()));
+  EXPECT_TRUE(service_->IsPolicyAvailableForUser(account_1_user_id_));
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, FetchPolicy) {
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  InstallDevicePolicy();
-
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
-  ASSERT_TRUE(broker);
-
-  service_.Connect(&mock_device_management_service_);
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
+  InstallDevicePolicy();
+
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+
+  service_->Connect(&mock_device_management_service_);
   EXPECT_TRUE(broker->core()->client());
 
   em::DeviceManagementRequest request;
   em::DeviceManagementResponse response;
   response.mutable_policy_response()->add_response()->CopyFrom(
       device_local_account_policy_.policy());
   EXPECT_CALL(mock_device_management_service_,
               CreateJob(DeviceManagementRequestJob::TYPE_POLICY_FETCH))
       .WillOnce(mock_device_management_service_.SucceedJob(response));
   EXPECT_CALL(mock_device_management_service_,
               StartJob(dm_protocol::kValueRequestPolicy,
                        std::string(), std::string(),
                        device_policy_.policy_data().request_token(),
                        dm_protocol::kValueUserAffiliationManaged,
                        device_policy_.policy_data().device_id(),
                        _))
       .WillOnce(SaveArg<6>(&request));
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
   broker->core()->client()->FetchPolicy();
   FlushDeviceSettings();
   Mock::VerifyAndClearExpectations(&service_observer_);
   Mock::VerifyAndClearExpectations(&mock_device_management_service_);
   EXPECT_TRUE(request.has_policy_request());
   EXPECT_EQ(1, request.policy_request().request_size());
   EXPECT_EQ(dm_protocol::kChromePublicAccountPolicyType,
             request.policy_request().request(0).policy_type());
   EXPECT_FALSE(request.policy_request().request(0).has_machine_id());
-  EXPECT_EQ(PolicyBuilder::kFakeUsername,
+  EXPECT_EQ(kAccount1,
             request.policy_request().request(0).settings_entity_id());
 
   ASSERT_TRUE(broker->core()->store());
   EXPECT_EQ(CloudPolicyStore::STATUS_OK,
             broker->core()->store()->status());
   ASSERT_TRUE(broker->core()->store()->policy());
   EXPECT_EQ(device_local_account_policy_.policy_data().SerializeAsString(),
             broker->core()->store()->policy()->SerializeAsString());
   EXPECT_TRUE(expected_policy_map_.Equals(
       broker->core()->store()->policy_map()));
-  EXPECT_TRUE(service_.IsPolicyAvailableForUser(public_session_user_id_));
+  EXPECT_TRUE(service_->IsPolicyAvailableForUser(account_1_user_id_));
 
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_))
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_))
       .Times(0);
-  service_.Disconnect();
+  service_->Disconnect();
   EXPECT_FALSE(broker->core()->client());
   Mock::VerifyAndClearExpectations(&service_observer_);
-  EXPECT_TRUE(service_.IsPolicyAvailableForUser(public_session_user_id_));
+  EXPECT_TRUE(service_->IsPolicyAvailableForUser(account_1_user_id_));
 }
 
 TEST_F(DeviceLocalAccountPolicyServiceTest, RefreshPolicy) {
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
   InstallDevicePolicy();
 
   DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
+      service_->GetBrokerForUser(account_1_user_id_);
   ASSERT_TRUE(broker);
 
-  service_.Connect(&mock_device_management_service_);
+  service_->Connect(&mock_device_management_service_);
   ASSERT_TRUE(broker->core()->service());
 
   em::DeviceManagementResponse response;
   response.mutable_policy_response()->add_response()->CopyFrom(
       device_local_account_policy_.policy());
   EXPECT_CALL(mock_device_management_service_, CreateJob(_))
       .WillOnce(mock_device_management_service_.SucceedJob(response));
   EXPECT_CALL(mock_device_management_service_, StartJob(_, _, _, _, _, _, _));
   EXPECT_CALL(*this, OnRefreshDone(true)).Times(1);
-  EXPECT_CALL(service_observer_, OnPolicyUpdated(public_session_user_id_));
+  EXPECT_CALL(service_observer_, OnPolicyUpdated(account_1_user_id_));
   broker->core()->service()->RefreshPolicy(
       base::Bind(&DeviceLocalAccountPolicyServiceTest::OnRefreshDone,
                  base::Unretained(this)));
   FlushDeviceSettings();
   Mock::VerifyAndClearExpectations(&service_observer_);
   Mock::VerifyAndClearExpectations(this);
   Mock::VerifyAndClearExpectations(&mock_device_management_service_);
 
   ASSERT_TRUE(broker->core()->store());
   EXPECT_EQ(CloudPolicyStore::STATUS_OK,
             broker->core()->store()->status());
   EXPECT_TRUE(expected_policy_map_.Equals(
       broker->core()->store()->policy_map()));
-  EXPECT_TRUE(service_.IsPolicyAvailableForUser(public_session_user_id_));
+  EXPECT_TRUE(service_->IsPolicyAvailableForUser(account_1_user_id_));
+}
+
+class DeviceLocalAccountPolicyExtensionCacheTest
+    : public DeviceLocalAccountPolicyServiceTestBase {
+ protected:
+  DeviceLocalAccountPolicyExtensionCacheTest();
+
+  virtual void SetUp() OVERRIDE;
+
+  base::FilePath GetCacheDirectoryForAccountID(const std::string& account_id);
+
+  base::ScopedTempDir cache_root_dir_;
+  scoped_ptr<base::ScopedPathOverride> cache_root_dir_override_;
+
+  base::FilePath cache_dir_1_;
+  base::FilePath cache_dir_2_;
+  base::FilePath cache_dir_3_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountPolicyExtensionCacheTest);
+};
+
+DeviceLocalAccountPolicyExtensionCacheTest::
+    DeviceLocalAccountPolicyExtensionCacheTest() {
+}
+
+void DeviceLocalAccountPolicyExtensionCacheTest::SetUp() {
+  DeviceLocalAccountPolicyServiceTestBase::SetUp();
+  ASSERT_TRUE(cache_root_dir_.CreateUniqueTempDir());
+  cache_root_dir_override_.reset(new base::ScopedPathOverride(
+      chromeos::DIR_DEVICE_LOCAL_ACCOUNT_CACHE,
+      cache_root_dir_.path()));
+
+  cache_dir_1_ = GetCacheDirectoryForAccountID(kAccount1);
+  cache_dir_2_ = GetCacheDirectoryForAccountID(kAccount2);
+  cache_dir_3_ = GetCacheDirectoryForAccountID(kAccount3);
+
+  em::StringList* forcelist = device_local_account_policy_.payload()
+      .mutable_extensioninstallforcelist()->mutable_value();
+  forcelist->add_entries(base::StringPrintf("%s;%s", kExtensionID, kUpdateURL));
+}
+
+base::FilePath DeviceLocalAccountPolicyExtensionCacheTest::
+    GetCacheDirectoryForAccountID(const std::string& account_id) {
+  return cache_root_dir_.path().Append(base::HexEncode(account_id.c_str(),
+                                                       account_id.size()));
+}
+
+// Verifies that during startup, orphaned cache directories are deleted,
+// cache directories belonging to an existing account are preserved and missing
+// cache directories are created. Also verifies that when startup is complete,
+// the caches for all existing accounts are running.
+TEST_F(DeviceLocalAccountPolicyExtensionCacheTest, Startup) {
+  base::FilePath test_data_dir;
+  ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir));
+  const base::FilePath source_crx_file =
+      test_data_dir.Append(kExtensionCRXPath);
+  const std::string target_crx_file_name =
+      base::StringPrintf("%s-%s.crx", kExtensionID, kExtensionVersion);
+
+  // Create and pre-populate a cache directory for account 1.
+  EXPECT_TRUE(file_util::CreateDirectory(cache_dir_1_));
+  EXPECT_TRUE(CopyFile(source_crx_file,
+                       cache_dir_1_.Append(target_crx_file_name)));
+
+  // Create and pre-populate a cache directory for account 3.
+  EXPECT_TRUE(file_util::CreateDirectory(cache_dir_3_));
+  EXPECT_TRUE(CopyFile(source_crx_file,
+                       cache_dir_3_.Append(target_crx_file_name)));
+
+  // Add accounts 1 and 2 to device policy.
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  InstallDeviceLocalAccountPolicy(kAccount2);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount2);
+  InstallDevicePolicy();
+
+  // Create the DeviceLocalAccountPolicyService, allowing it to finish the
+  // deletion of orphaned cache directories.
+  CreatePolicyService();
+  FlushDeviceSettings();
+  extension_cache_task_runner_->RunUntilIdle();
+
+  // Verify that the cache directory for account 1 and its contents still exist.
+  EXPECT_TRUE(base::DirectoryExists(cache_dir_1_));
+  EXPECT_TRUE(ContentsEqual(source_crx_file,
+                            cache_dir_1_.Append(target_crx_file_name)));
+
+  // Verify that a cache directory for account 2 was created.
+  EXPECT_TRUE(base::DirectoryExists(cache_dir_2_));
+
+  // Verify that the cache directory for account 3 was deleted.
+  EXPECT_FALSE(base::DirectoryExists(cache_dir_3_));
+
+  // Verify that the cache for account 1 has been started.
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_TRUE(broker->extension_loader()->IsCacheRunning());
+
+  // Verify that the cache for account 2 has been started.
+  broker = service_->GetBrokerForUser(account_2_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_TRUE(broker->extension_loader()->IsCacheRunning());
+}
+
+// Verifies that while the deletion of orphaned cache directories is in
+// progress, the caches for accounts which existed before the deletion started
+// are running but caches for newly added accounts are not started.
+TEST_F(DeviceLocalAccountPolicyExtensionCacheTest, RaceAgainstOrphanDeletion) {
+  // Add account 1 to device policy.
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+
+  // Create the DeviceLocalAccountPolicyService, triggering the deletion of
+  // orphaned cache directories.
+  CreatePolicyService();
+  FlushDeviceSettings();
+
+  // Verify that the cache for account 1 has been started as it is unaffected by
+  // the orphan deletion.
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_TRUE(broker->extension_loader()->IsCacheRunning());
+
+  // Add account 2 to device policy.
+  InstallDeviceLocalAccountPolicy(kAccount2);
+  AddDeviceLocalAccountToPolicy(kAccount2);
+  InstallDevicePolicy();
+
+  // Verify that the cache for account 2 has not been started yet as the orphan
+  // deletion is still in progress.
+  broker = service_->GetBrokerForUser(account_2_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_FALSE(broker->extension_loader()->IsCacheRunning());
+
+  // Allow the orphan deletion to finish.
+  extension_cache_task_runner_->RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
+
+  // Verify that the cache for account 2 has been started.
+  EXPECT_TRUE(broker->extension_loader()->IsCacheRunning());
+}
+
+// Verifies that while the shutdown of a cache is in progress, no new cache is
+// started if an account with the same ID is re-added.
+TEST_F(DeviceLocalAccountPolicyExtensionCacheTest, RaceAgainstCacheShutdown) {
+  // Add account 1 to device policy.
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+
+  // Create the DeviceLocalAccountPolicyService, allowing it to finish the
+  // deletion of orphaned cache directories.
+  CreatePolicyService();
+  FlushDeviceSettings();
+  extension_cache_task_runner_->RunUntilIdle();
+
+  // Remove account 1 from device policy, triggering a shutdown of its cache.
+  device_policy_.payload().mutable_device_local_accounts()->clear_account();
+  InstallDevicePolicy();
+
+  // Re-add account 1 to device policy.
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+
+  // Verify that the cache for account 1 has not been started yet as the
+  // shutdown of a previous cache for this account ID is still in progress.
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_FALSE(broker->extension_loader()->IsCacheRunning());
+
+  // Allow the cache shutdown to finish.
+  extension_cache_task_runner_->RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
+
+  // Verify that the cache directory for account 1 still exists.
+  EXPECT_TRUE(base::DirectoryExists(cache_dir_1_));
+
+  // Verify that the cache for account 1 has been started, reusing the existing
+  // cache directory.
+  EXPECT_TRUE(broker->extension_loader()->IsCacheRunning());
+}
+
+// Verifies that while the deletion of an obsolete cache directory is in
+// progress, no new cache is started if an account with the same ID is re-added.
+TEST_F(DeviceLocalAccountPolicyExtensionCacheTest,
+       RaceAgainstObsoleteDeletion) {
+  // Add account 1 to device policy.
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+
+  // Create the DeviceLocalAccountPolicyService, allowing it to finish the
+  // deletion of orphaned cache directories.
+  CreatePolicyService();
+  FlushDeviceSettings();
+  extension_cache_task_runner_->RunUntilIdle();
+
+  // Remove account 1 from device policy, allowing the shutdown of its cache to
+  // finish and the deletion of its now obsolete cache directory to begin.
+  device_policy_.payload().mutable_device_local_accounts()->clear_account();
+  InstallDevicePolicy();
+  extension_cache_task_runner_->RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
+
+  // Re-add account 1 to device policy.
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+
+  // Verify that the cache for account 1 has not been started yet as the
+  // deletion of the cache directory for this account ID is still in progress.
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_FALSE(broker->extension_loader()->IsCacheRunning());
+
+  // Allow the deletion to finish.
+  extension_cache_task_runner_->RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
+
+  // Verify that the cache directory for account 1 was deleted.
+  EXPECT_FALSE(base::DirectoryExists(cache_dir_1_));
+
+  // Verify that the cache for account 1 has been started.
+  EXPECT_TRUE(broker->extension_loader()->IsCacheRunning());
+}
+
+// Verifies that when an account is added and no deletion of cache directories
+// affecting this account is in progress, its cache is started immediately.
+TEST_F(DeviceLocalAccountPolicyExtensionCacheTest, AddAccount) {
+  // Create the DeviceLocalAccountPolicyService, allowing it to finish the
+  // deletion of orphaned cache directories.
+  InstallDevicePolicy();
+  CreatePolicyService();
+  FlushDeviceSettings();
+  extension_cache_task_runner_->RunUntilIdle();
+
+  // Add account 1 to device policy.
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+
+  // Verify that the cache for account 1 has been started.
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
+  ASSERT_TRUE(broker);
+  EXPECT_TRUE(broker->extension_loader()->IsCacheRunning());
+}
+
+// Verifies that when an account is removed, its cache directory is deleted.
+TEST_F(DeviceLocalAccountPolicyExtensionCacheTest, RemoveAccount) {
+  // Add account 1 to device policy.
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+
+  // Create the DeviceLocalAccountPolicyService, allowing it to finish the
+  // deletion of orphaned cache directories.
+  CreatePolicyService();
+  FlushDeviceSettings();
+  extension_cache_task_runner_->RunUntilIdle();
+
+  // Verify that a cache directory has been created for account 1.
+  EXPECT_TRUE(base::DirectoryExists(cache_dir_1_));
+
+  // Remove account 1 from device policy, allowing the deletion of its now
+  // obsolete cache directory to finish.
+  device_policy_.payload().mutable_device_local_accounts()->clear_account();
+  InstallDevicePolicy();
+  extension_cache_task_runner_->RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
+  extension_cache_task_runner_->RunUntilIdle();
+
+  // Verify that the cache directory for account 1 was deleted.
+  EXPECT_FALSE(base::DirectoryExists(cache_dir_1_));
 }
 
 class DeviceLocalAccountPolicyProviderTest
-    : public DeviceLocalAccountPolicyServiceTest {
+    : public DeviceLocalAccountPolicyServiceTestBase {
  protected:
-  DeviceLocalAccountPolicyProviderTest()
-      : provider_(
-            GenerateDeviceLocalAccountUserId(
-                PolicyBuilder::kFakeUsername,
-                DeviceLocalAccount::TYPE_PUBLIC_SESSION),
-            &service_) {}
-
-  virtual void SetUp() OVERRIDE {
-    DeviceLocalAccountPolicyServiceTest::SetUp();
-    provider_.Init();
-    provider_.AddObserver(&provider_observer_);
-
-    EXPECT_CALL(service_observer_, OnPolicyUpdated(_)).Times(AnyNumber());
-    EXPECT_CALL(service_observer_, OnDeviceLocalAccountsChanged())
-        .Times(AnyNumber());
-  }
-
-  virtual void TearDown() OVERRIDE {
-    provider_.RemoveObserver(&provider_observer_);
-    provider_.Shutdown();
-    DeviceLocalAccountPolicyServiceTest::TearDown();
-  }
-
-  DeviceLocalAccountPolicyProvider provider_;
+  DeviceLocalAccountPolicyProviderTest();
+
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+
+  scoped_ptr<DeviceLocalAccountPolicyProvider> provider_;
   MockConfigurationPolicyObserver provider_observer_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountPolicyProviderTest);
 };
 
+DeviceLocalAccountPolicyProviderTest::DeviceLocalAccountPolicyProviderTest() {
+  CreatePolicyService();
+  provider_.reset(new DeviceLocalAccountPolicyProvider(
+      GenerateDeviceLocalAccountUserId(kAccount1,
+                                       DeviceLocalAccount::TYPE_PUBLIC_SESSION),
+      service_.get()));
+}
+
+void DeviceLocalAccountPolicyProviderTest::SetUp() {
+  DeviceLocalAccountPolicyServiceTestBase::SetUp();
+  provider_->Init();
+  provider_->AddObserver(&provider_observer_);
+}
+
+void DeviceLocalAccountPolicyProviderTest::TearDown() {
+  provider_->RemoveObserver(&provider_observer_);
+  provider_->Shutdown();
+  DeviceLocalAccountPolicyServiceTestBase::TearDown();
+}
+
 TEST_F(DeviceLocalAccountPolicyProviderTest, Initialization) {
-  EXPECT_FALSE(provider_.IsInitializationComplete(POLICY_DOMAIN_CHROME));
+  EXPECT_FALSE(provider_->IsInitializationComplete(POLICY_DOMAIN_CHROME));
 
   // Policy change should complete initialization.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_)).Times(AtLeast(1));
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-  ReloadDeviceSettings();
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
+      .Times(AtLeast(1));
+  InstallDevicePolicy();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 
-  EXPECT_TRUE(provider_.IsInitializationComplete(POLICY_DOMAIN_CHROME));
+  EXPECT_TRUE(provider_->IsInitializationComplete(POLICY_DOMAIN_CHROME));
 
   // The account disappearing should *not* flip the initialization flag back.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_))
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
       .Times(AnyNumber());
   device_policy_.payload().mutable_device_local_accounts()->clear_account();
-  device_policy_.Build();
-  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-  ReloadDeviceSettings();
+  InstallDevicePolicy();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 
-  EXPECT_TRUE(provider_.IsInitializationComplete(POLICY_DOMAIN_CHROME));
+  EXPECT_TRUE(provider_->IsInitializationComplete(POLICY_DOMAIN_CHROME));
 }
 
 TEST_F(DeviceLocalAccountPolicyProviderTest, Policy) {
   // Policy should load successfully.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_)).Times(AtLeast(1));
-  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  ReloadDeviceSettings();
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
+      .Times(AtLeast(1));
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 
   PolicyBundle expected_policy_bundle;
   expected_policy_bundle.Get(PolicyNamespace(
       POLICY_DOMAIN_CHROME, std::string())).CopyFrom(expected_policy_map_);
-  EXPECT_TRUE(expected_policy_bundle.Equals(provider_.policies()));
+  EXPECT_TRUE(expected_policy_bundle.Equals(provider_->policies()));
 
   // Policy change should be reported.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_)).Times(AtLeast(1));
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
+      .Times(AtLeast(1));
   device_local_account_policy_.payload().mutable_disablespdy()->set_value(
       false);
-  device_local_account_policy_.Build();
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
-  DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
+  InstallDeviceLocalAccountPolicy(kAccount1);
+  DeviceLocalAccountPolicyBroker* broker =
+      service_->GetBrokerForUser(account_1_user_id_);
   ASSERT_TRUE(broker);
   broker->core()->store()->Load();
   FlushDeviceSettings();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 
   expected_policy_bundle.Get(
       PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))
       .Set(key::kDisableSpdy,
            POLICY_LEVEL_MANDATORY,
            POLICY_SCOPE_USER,
            Value::CreateBooleanValue(false),
            NULL);
-  EXPECT_TRUE(expected_policy_bundle.Equals(provider_.policies()));
+  EXPECT_TRUE(expected_policy_bundle.Equals(provider_->policies()));
 
   // Any values set for the |ShelfAutoHideBehavior|, |ShowLogoutButtonInTray|
   // and |ExtensionAllowedTypes| policies should be overridden.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_)).Times(AtLeast(1));
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
+      .Times(AtLeast(1));
   device_local_account_policy_.payload().mutable_shelfautohidebehavior()->
       set_value("Always");
   device_local_account_policy_.payload().mutable_showlogoutbuttonintray()->
       set_value(false);
-  device_local_account_policy_.Build();
-  device_settings_test_helper_.set_device_local_account_policy_blob(
-      PolicyBuilder::kFakeUsername, device_local_account_policy_.GetBlob());
+  InstallDeviceLocalAccountPolicy(kAccount1);
   broker->core()->store()->Load();
   FlushDeviceSettings();
   Mock::VerifyAndClearExpectations(&provider_observer_);
-  EXPECT_TRUE(expected_policy_bundle.Equals(provider_.policies()));
+  EXPECT_TRUE(expected_policy_bundle.Equals(provider_->policies()));
 
   // Account disappears, policy should stay in effect.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_))
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
       .Times(AnyNumber());
   device_policy_.payload().mutable_device_local_accounts()->clear_account();
-  device_policy_.Build();
-  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-  ReloadDeviceSettings();
+  InstallDevicePolicy();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 
-  EXPECT_TRUE(expected_policy_bundle.Equals(provider_.policies()));
+  EXPECT_TRUE(expected_policy_bundle.Equals(provider_->policies()));
 }
 
 TEST_F(DeviceLocalAccountPolicyProviderTest, RefreshPolicies) {
   // If there's no device policy, the refresh completes immediately.
-  EXPECT_FALSE(service_.GetBrokerForUser(public_session_user_id_));
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_)).Times(AtLeast(1));
-  provider_.RefreshPolicies();
+  EXPECT_FALSE(service_->GetBrokerForUser(account_1_user_id_));
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
+      .Times(AtLeast(1));
+  provider_->RefreshPolicies();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 
   // Make device settings appear.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_))
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
       .Times(AnyNumber());
-  device_settings_test_helper_.set_policy_blob(device_policy_.GetBlob());
-  ReloadDeviceSettings();
-  Mock::VerifyAndClearExpectations(&provider_observer_);
-  EXPECT_TRUE(service_.GetBrokerForUser(public_session_user_id_));
+  AddDeviceLocalAccountToPolicy(kAccount1);
+  InstallDevicePolicy();
+  EXPECT_TRUE(service_->GetBrokerForUser(account_1_user_id_));
 
   // If there's no cloud connection, refreshes are still immediate.
   DeviceLocalAccountPolicyBroker* broker =
-      service_.GetBrokerForUser(public_session_user_id_);
+      service_->GetBrokerForUser(account_1_user_id_);
   ASSERT_TRUE(broker);
   EXPECT_FALSE(broker->core()->client());
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_)).Times(AtLeast(1));
-  provider_.RefreshPolicies();
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
+      .Times(AtLeast(1));
+  provider_->RefreshPolicies();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 
   // Bring up the cloud connection. The refresh scheduler may fire refreshes at
   // this point which are not relevant for the test.
   EXPECT_CALL(mock_device_management_service_, CreateJob(_))
       .WillRepeatedly(
           mock_device_management_service_.FailJob(DM_STATUS_REQUEST_FAILED));
   EXPECT_CALL(mock_device_management_service_, StartJob(_, _, _, _, _, _, _))
       .Times(AnyNumber());
-  service_.Connect(&mock_device_management_service_);
+  service_->Connect(&mock_device_management_service_);
   FlushDeviceSettings();
   Mock::VerifyAndClearExpectations(&mock_device_management_service_);
 
   // No callbacks until the refresh completes.
   EXPECT_CALL(provider_observer_, OnUpdatePolicy(_)).Times(0);
   MockDeviceManagementJob* request_job;
   EXPECT_CALL(mock_device_management_service_, CreateJob(_))
       .WillOnce(mock_device_management_service_.CreateAsyncJob(&request_job));
   EXPECT_CALL(mock_device_management_service_, StartJob(_, _, _, _, _, _, _));
-  provider_.RefreshPolicies();
+  provider_->RefreshPolicies();
   ReloadDeviceSettings();
   Mock::VerifyAndClearExpectations(&provider_observer_);
   Mock::VerifyAndClearExpectations(&mock_device_management_service_);
-  EXPECT_TRUE(provider_.IsInitializationComplete(POLICY_DOMAIN_CHROME));
+  EXPECT_TRUE(provider_->IsInitializationComplete(POLICY_DOMAIN_CHROME));
 
   // When the response comes in, it should propagate and fire the notification.
-  EXPECT_CALL(provider_observer_, OnUpdatePolicy(&provider_)).Times(AtLeast(1));
+  EXPECT_CALL(provider_observer_, OnUpdatePolicy(provider_.get()))
+      .Times(AtLeast(1));
   ASSERT_TRUE(request_job);
   em::DeviceManagementResponse response;
+  device_local_account_policy_.Build();
   response.mutable_policy_response()->add_response()->CopyFrom(
       device_local_account_policy_.policy());
   request_job->SendResponse(DM_STATUS_SUCCESS, response);
   FlushDeviceSettings();
   Mock::VerifyAndClearExpectations(&provider_observer_);
 }
 
 }  // namespace policy