[Sync] Componentize local_device_info_provider_impl and test

chrome/browser/sync/glue/local_device_info_provider_unittest.cc

-// 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/bind.h"
-#include "base/message_loop/message_loop.h"
-#include "base/run_loop.h"
-#include "chrome/browser/sync/glue/local_device_info_provider_impl.h"
-#include "sync/util/get_session_name.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using sync_driver::DeviceInfo;
-using sync_driver::LocalDeviceInfoProvider;
-
-namespace browser_sync {
-
-const char kLocalDeviceGuid[] = "foo";
-const char kSigninScopedDeviceId[] = "device_id";
-
-class LocalDeviceInfoProviderTest : public testing::Test {
- public:
-  LocalDeviceInfoProviderTest()
-    : called_back_(false) {}
-  ~LocalDeviceInfoProviderTest() override {}
-
-  void SetUp() override { provider_.reset(new LocalDeviceInfoProviderImpl()); }
-
-  void TearDown() override {
-    provider_.reset();
-    called_back_ = false;
-  }
-
- protected:
-  void InitializeProvider() {
-    // Start initialization.
-    provider_->Initialize(kLocalDeviceGuid, kSigninScopedDeviceId);
-
-    // Subscribe to the notification and wait until the callback
-    // is called. The callback will quit the loop.
-    base::RunLoop run_loop;
-    scoped_ptr<LocalDeviceInfoProvider::Subscription> subscription(
-        provider_->RegisterOnInitializedCallback(
-            base::Bind(&LocalDeviceInfoProviderTest::QuitLoopOnInitialized,
-                       base::Unretained(this), &run_loop)));
-    run_loop.Run();
-  }
-
-  void QuitLoopOnInitialized(base::RunLoop* loop) {
-    called_back_ = true;
-    loop->Quit();
-  }
-
-  scoped_ptr<LocalDeviceInfoProviderImpl> provider_;
-
-  bool called_back_;
-
- private:
-  base::MessageLoop message_loop_;
-};
-
-TEST_F(LocalDeviceInfoProviderTest, OnInitializedCallback) {
-  ASSERT_FALSE(called_back_);
-
-  InitializeProvider();
-  EXPECT_TRUE(called_back_);
-}
-
-TEST_F(LocalDeviceInfoProviderTest, GetLocalDeviceInfo) {
-  ASSERT_EQ(NULL, provider_->GetLocalDeviceInfo());
-
-  InitializeProvider();
-
-  const DeviceInfo* local_device_info = provider_->GetLocalDeviceInfo();
-  EXPECT_TRUE(local_device_info);
-  EXPECT_EQ(std::string(kLocalDeviceGuid), local_device_info->guid());
-  EXPECT_EQ(std::string(kSigninScopedDeviceId),
-            local_device_info->signin_scoped_device_id());
-  EXPECT_EQ(syncer::GetSessionNameSynchronouslyForTesting(),
-            local_device_info->client_name());
-
-  EXPECT_EQ(provider_->GetSyncUserAgent(),
-            local_device_info->sync_user_agent());
-}
-
-TEST_F(LocalDeviceInfoProviderTest, GetLocalSyncCacheGUID) {
-  ASSERT_EQ(std::string(), provider_->GetLocalSyncCacheGUID());
-
-  InitializeProvider();
-
-  EXPECT_EQ(std::string(kLocalDeviceGuid), provider_->GetLocalSyncCacheGUID());
-}
-
-}  // namespace browser_sync