Refactor syncable DEVICE_INFO type from ChangeProcessor to SyncableService - Part 2

chrome/browser/sync/glue/device_info_sync_service_unittest.cc

Index: chrome/browser/sync/glue/device_info_sync_service_unittest.cc
diff --git a/chrome/browser/sync/glue/device_info_sync_service_unittest.cc b/chrome/browser/sync/glue/device_info_sync_service_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b3c691ef95ccafb5d82f8dc8f6a84eba29f3af34
--- /dev/null
+++ b/chrome/browser/sync/glue/device_info_sync_service_unittest.cc
@@ -0,0 +1,403 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/message_loop/message_loop.h"
+#include "chrome/browser/sync/glue/device_info_sync_service.h"
+#include "chrome/browser/sync/glue/local_device_info_provider_mock.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "sync/api/attachments/attachment_service_proxy_for_test.h"
+#include "sync/api/sync_change.h"
+#include "sync/api/sync_change_processor.h"
+#include "sync/api/sync_change_processor_wrapper_for_test.h"
+#include "sync/api/sync_error_factory_mock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using syncer::AttachmentIdList;
+using syncer::AttachmentServiceProxyForTest;
+using syncer::ModelType;
+using syncer::SyncChange;
+using syncer::SyncChangeList;
+using syncer::SyncChangeProcessor;
+using syncer::SyncChangeProcessorWrapperForTest;
+using syncer::SyncData;
+using syncer::SyncDataList;
+using syncer::SyncError;
+using syncer::SyncErrorFactory;
+using syncer::SyncErrorFactoryMock;
+using syncer::SyncMergeResult;
+
+namespace browser_sync {
+
+namespace {
+
+class TestChangeProcessor : public SyncChangeProcessor {
+ public:
+  TestChangeProcessor() {}
+  virtual ~TestChangeProcessor() {}
+
+  // SyncChangeProcessor implementation.
+  // Store a copy of all the changes passed in so we can examine them later.
+  virtual SyncError ProcessSyncChanges(
+      const tracked_objects::Location& from_here,
+      const SyncChangeList& change_list) OVERRIDE {
+    change_list_ = change_list;
+    return SyncError();
+  }
+
+  // This method isn't used in these tests.
+  virtual SyncDataList GetAllSyncData(ModelType type) const OVERRIDE {
+    return SyncDataList();
+  }
+
+  size_t change_list_size() const { return change_list_.size(); }
+
+  SyncChange::SyncChangeType change_type_at(size_t index) const {
+    CHECK_LT(index, change_list_size());
+    return change_list_[index].change_type();
+  }
+
+  const sync_pb::DeviceInfoSpecifics& device_info_at(size_t index) const {
+    CHECK_LT(index, change_list_size());
+    return change_list_[index].sync_data().GetSpecifics().device_info();
+  }
+
+  const std::string& cache_guid_at(size_t index) const {
+    return device_info_at(index).cache_guid();
+  }
+
+  const std::string& client_name_at(size_t index) const {
+    return device_info_at(index).client_name();
+  }
+
+ private:
+  SyncChangeList change_list_;
+};
+
+class DeviceInfoSyncServiceTest : public testing::Test,
+                                  public DeviceInfoTracker::Observer {
+ public:
+  DeviceInfoSyncServiceTest() : num_device_info_changed_callbacks_(0) {}
+  virtual ~DeviceInfoSyncServiceTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    local_device_.reset(new LocalDeviceInfoProviderMock(
+        "guid_1",
+        "client_1",
+        "Chromium 10k",
+        "Chrome 10k",
+        sync_pb::SyncEnums_DeviceType_TYPE_LINUX,
+        "device_id"));
+    sync_service_.reset(new DeviceInfoSyncService(local_device_.get()));
+    sync_processor_.reset(new TestChangeProcessor());
+    // Register observer
+    sync_service_->AddObserver(this);
+  }
+
+  virtual void TearDown() OVERRIDE {}
+
+  virtual void OnDeviceInfoChange() OVERRIDE {
+    num_device_info_changed_callbacks_++;
+  }
+
+  scoped_ptr<SyncChangeProcessor> PassProcessor() {
+    return scoped_ptr<SyncChangeProcessor>(
+        new SyncChangeProcessorWrapperForTest(sync_processor_.get()));
+  }
+
+  scoped_ptr<SyncErrorFactory> CreateAndPassSyncErrorFactory() {
+    return scoped_ptr<SyncErrorFactory>(new SyncErrorFactoryMock());
+  }
+
+  SyncData CreateRemoteData(const std::string& client_id,
+                            const std::string& client_name) {
+    sync_pb::EntitySpecifics entity;
+    sync_pb::DeviceInfoSpecifics& specifics = *entity.mutable_device_info();
+
+    specifics.set_cache_guid(client_id);
+    specifics.set_client_name(client_name);
+    specifics.set_chrome_version("Chromium 10k");
+    specifics.set_sync_user_agent("Chrome 10k");
+    specifics.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_LINUX);
+    specifics.set_signin_scoped_device_id("device_id");
+
+    return SyncData::CreateRemoteData(1,
+                                      entity,
+                                      base::Time(),
+                                      AttachmentIdList(),
+                                      AttachmentServiceProxyForTest::Create());
+  }
+
+  void AddInitialData(SyncDataList& sync_data_list,
+                      const std::string& client_id,
+                      const std::string& client_name) {
+    SyncData sync_data = CreateRemoteData(client_id, client_name);
+    sync_data_list.push_back(sync_data);
+  }
+
+  void AddChange(SyncChangeList& change_list,
+                 SyncChange::SyncChangeType change_type,
+                 const std::string& client_id,
+                 const std::string& client_name) {
+    SyncData sync_data = CreateRemoteData(client_id, client_name);
+    SyncChange sync_change(FROM_HERE, change_type, sync_data);
+    change_list.push_back(sync_change);
+  }
+
+ protected:
+  int num_device_info_changed_callbacks_;
+  scoped_ptr<LocalDeviceInfoProviderMock> local_device_;
+  scoped_ptr<DeviceInfoSyncService> sync_service_;
+  scoped_ptr<TestChangeProcessor> sync_processor_;
+  content::TestBrowserThreadBundle thread_bundle_;
+};
+
+// Sync with empty initial data.
+TEST_F(DeviceInfoSyncServiceTest, StartSyncEmptyInitialData) {
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              SyncDataList(),
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+
+  EXPECT_EQ(0, merge_result.num_items_added());
+  EXPECT_EQ(0, merge_result.num_items_modified());
+  EXPECT_EQ(0, merge_result.num_items_deleted());
+  EXPECT_EQ(1, merge_result.num_items_before_association());
+  EXPECT_EQ(1, merge_result.num_items_after_association());
+  EXPECT_EQ(SyncChange::ACTION_ADD, sync_processor_->change_type_at(0));
+
+  EXPECT_EQ(1U, sync_processor_->change_list_size());
+  EXPECT_EQ("guid_1", sync_processor_->cache_guid_at(0));
+
+  // Should have one device info corresponding to local device info.
+  EXPECT_EQ(1U, sync_service_->GetAllSyncData(syncer::DEVICE_INFO).size());
+  EXPECT_EQ(1U, sync_service_->GetAllDeviceInfo().size());
+  EXPECT_TRUE(sync_service_->GetDeviceInfo("guid_1"));
+  EXPECT_FALSE(sync_service_->GetDeviceInfo("guid_0"));
+}
+
+// Sync with initial data matching the local device data.
+TEST_F(DeviceInfoSyncServiceTest, StartSyncMatchingInitialData) {
+  SyncDataList sync_data;
+  AddInitialData(sync_data, "guid_1", "client_1");
+
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              sync_data,
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+  EXPECT_EQ(0, merge_result.num_items_added());
+  EXPECT_EQ(0, merge_result.num_items_modified());
+  EXPECT_EQ(0, merge_result.num_items_deleted());
+  EXPECT_EQ(1, merge_result.num_items_before_association());
+  EXPECT_EQ(1, merge_result.num_items_after_association());
+
+  // No changes expected because the device info matches.
+  EXPECT_EQ(0U, sync_processor_->change_list_size());
+
+  EXPECT_EQ(1U, sync_service_->GetAllSyncData(syncer::DEVICE_INFO).size());
+  EXPECT_EQ(1U, sync_service_->GetAllDeviceInfo().size());
+  EXPECT_TRUE(sync_service_->GetDeviceInfo("guid_1"));
+  EXPECT_FALSE(sync_service_->GetDeviceInfo("guid_0"));
+}
+
+// Sync with misc initial data.
+TEST_F(DeviceInfoSyncServiceTest, StartSync) {
+  SyncDataList sync_data;
+  AddInitialData(sync_data, "guid_2", "foo");
+  AddInitialData(sync_data, "guid_3", "bar");
+  // This guid matches the local device but the client name is different.
+  AddInitialData(sync_data, "guid_1", "baz");
+
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              sync_data,
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+
+  EXPECT_EQ(2, merge_result.num_items_added());
+  EXPECT_EQ(1, merge_result.num_items_modified());
+  EXPECT_EQ(0, merge_result.num_items_deleted());
+  EXPECT_EQ(1, merge_result.num_items_before_association());
+  EXPECT_EQ(3, merge_result.num_items_after_association());
+
+  EXPECT_EQ(1U, sync_processor_->change_list_size());
+  EXPECT_EQ(SyncChange::ACTION_UPDATE, sync_processor_->change_type_at(0));
+  EXPECT_EQ("client_1", sync_processor_->client_name_at(0));
+
+  EXPECT_EQ(3U, sync_service_->GetAllSyncData(syncer::DEVICE_INFO).size());
+  EXPECT_EQ(3U, sync_service_->GetAllDeviceInfo().size());
+  EXPECT_TRUE(sync_service_->GetDeviceInfo("guid_1"));
+  EXPECT_TRUE(sync_service_->GetDeviceInfo("guid_2"));
+  EXPECT_TRUE(sync_service_->GetDeviceInfo("guid_3"));
+  EXPECT_FALSE(sync_service_->GetDeviceInfo("guid_0"));
+}
+
+// Process sync change with ACTION_ADD.
+// Verify callback.
+TEST_F(DeviceInfoSyncServiceTest, ProcessAddChange) {
+  EXPECT_EQ(0, num_device_info_changed_callbacks_);
+
+  // Start with an empty initial data.
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              SyncDataList(),
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+  // There should be only one item corresponding to the local device
+  EXPECT_EQ(1, merge_result.num_items_after_association());
+  EXPECT_EQ(1, num_device_info_changed_callbacks_);
+
+  // Add a new device info with a non-matching guid.
+  SyncChangeList change_list;
+  AddChange(change_list, SyncChange::ACTION_ADD, "guid_2", "foo");
+
+  SyncError error = sync_service_->ProcessSyncChanges(FROM_HERE, change_list);
+  EXPECT_FALSE(error.IsSet());
+  EXPECT_EQ(2, num_device_info_changed_callbacks_);
+
+  EXPECT_EQ(2U, sync_service_->GetAllDeviceInfo().size());
+
+  EXPECT_TRUE(sync_service_->GetDeviceInfo("guid_1"));
+  EXPECT_TRUE(sync_service_->GetDeviceInfo("guid_2"));
+  EXPECT_FALSE(sync_service_->GetDeviceInfo("guid_0"));
+}
+
+// Process multiple sync change with ACTION_UPDATE and ACTION_ADD.
+// Verify that callback is called multiple times.
+TEST_F(DeviceInfoSyncServiceTest, ProcessMultipleChanges) {
+  SyncDataList sync_data;
+  AddInitialData(sync_data, "guid_2", "foo");
+  AddInitialData(sync_data, "guid_3", "bar");
+
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              sync_data,
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+  EXPECT_EQ(3, merge_result.num_items_after_association());
+  // reset callbacks counter
+  num_device_info_changed_callbacks_ = 0;
+
+  SyncChangeList change_list;
+  AddChange(change_list, SyncChange::ACTION_UPDATE, "guid_2", "foo_2");
+
+  SyncError error = sync_service_->ProcessSyncChanges(FROM_HERE, change_list);
+  EXPECT_FALSE(error.IsSet());
+
+  EXPECT_EQ(1, num_device_info_changed_callbacks_);
+  EXPECT_EQ(3U, sync_service_->GetAllDeviceInfo().size());
+  EXPECT_EQ("foo_2", sync_service_->GetDeviceInfo("guid_2")->client_name());
+
+  change_list.clear();
+  AddChange(change_list, SyncChange::ACTION_UPDATE, "guid_3", "bar_3");
+  AddChange(change_list, SyncChange::ACTION_ADD, "guid_4", "baz_4");
+
+  error = sync_service_->ProcessSyncChanges(FROM_HERE, change_list);
+  EXPECT_FALSE(error.IsSet());
+
+  EXPECT_EQ(2, num_device_info_changed_callbacks_);
+  EXPECT_EQ(4U, sync_service_->GetAllDeviceInfo().size());
+  EXPECT_EQ("bar_3", sync_service_->GetDeviceInfo("guid_3")->client_name());
+  EXPECT_EQ("baz_4", sync_service_->GetDeviceInfo("guid_4")->client_name());
+}
+
+// Process update to the local device info and verify that it is ignored.
+TEST_F(DeviceInfoSyncServiceTest, ProcessUpdateChangeMatchingLocalDevice) {
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              SyncDataList(),
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+  EXPECT_EQ(1, merge_result.num_items_after_association());
+  // reset callbacks counter
+  num_device_info_changed_callbacks_ = 0;
+
+  SyncChangeList change_list;
+  AddChange(change_list, SyncChange::ACTION_UPDATE, "guid_1", "foo_1");
+
+  SyncError error = sync_service_->ProcessSyncChanges(FROM_HERE, change_list);
+  EXPECT_FALSE(error.IsSet());
+  // Callback shouldn't be sent in this case.
+  EXPECT_EQ(0, num_device_info_changed_callbacks_);
+  // Should still have the old local device Info.
+  EXPECT_EQ(1U, sync_service_->GetAllDeviceInfo().size());
+  EXPECT_EQ("client_1", sync_service_->GetDeviceInfo("guid_1")->client_name());
+}
+
+// Process sync change with ACTION_DELETE.
+TEST_F(DeviceInfoSyncServiceTest, ProcessDeleteChange) {
+  SyncDataList sync_data;
+  AddInitialData(sync_data, "guid_2", "foo");
+  AddInitialData(sync_data, "guid_3", "bar");
+
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              sync_data,
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+  EXPECT_EQ(3, merge_result.num_items_after_association());
+  // reset callbacks counter
+  num_device_info_changed_callbacks_ = 0;
+
+  SyncChangeList change_list;
+  AddChange(change_list, SyncChange::ACTION_DELETE, "guid_2", "foo_2");
+
+  SyncError error = sync_service_->ProcessSyncChanges(FROM_HERE, change_list);
+  EXPECT_FALSE(error.IsSet());
+
+  EXPECT_EQ(1, num_device_info_changed_callbacks_);
+  EXPECT_EQ(2U, sync_service_->GetAllDeviceInfo().size());
+  EXPECT_FALSE(sync_service_->GetDeviceInfo("guid_2"));
+}
+
+// Process sync change with unexpected action.
+TEST_F(DeviceInfoSyncServiceTest, ProcessInvalidChange) {
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              SyncDataList(),
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+  EXPECT_EQ(1, merge_result.num_items_after_association());
+  // reset callbacks counter
+  num_device_info_changed_callbacks_ = 0;
+
+  SyncChangeList change_list;
+  AddChange(change_list, (SyncChange::SyncChangeType)100, "guid_2", "foo_2");
+
+  SyncError error = sync_service_->ProcessSyncChanges(FROM_HERE, change_list);
+  EXPECT_TRUE(error.IsSet());
+
+  // The number of callback should still be zero.
+  EXPECT_EQ(0, num_device_info_changed_callbacks_);
+  EXPECT_EQ(1U, sync_service_->GetAllDeviceInfo().size());
+}
+
+// Process sync change after unsubscribing from notifications.
+TEST_F(DeviceInfoSyncServiceTest, ProcessChangesAfterUnsubscribing) {
+  SyncMergeResult merge_result =
+      sync_service_->MergeDataAndStartSyncing(syncer::DEVICE_INFO,
+                                              SyncDataList(),
+                                              PassProcessor(),
+                                              CreateAndPassSyncErrorFactory());
+  EXPECT_EQ(1, merge_result.num_items_after_association());
+  // reset callbacks counter
+  num_device_info_changed_callbacks_ = 0;
+
+  SyncChangeList change_list;
+  AddChange(change_list, SyncChange::ACTION_ADD, "guid_2", "foo_2");
+
+  // Unsubscribe observer before processing changes.
+  sync_service_->RemoveObserver(this);
+
+  SyncError error = sync_service_->ProcessSyncChanges(FROM_HERE, change_list);
+  EXPECT_FALSE(error.IsSet());
+
+  // The number of callback should still be zero.
+  EXPECT_EQ(0, num_device_info_changed_callbacks_);
+}
+
+}  // namespace
+
+}  // namespace browser_sync