Rename GDataCache* to DriveCache*

chrome/browser/chromeos/gdata/gdata_file_system_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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
 #include "base/stringprintf.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/gdata/drive.pb.h"
 #include "chrome/browser/chromeos/gdata/drive_api_parser.h"
 #include "chrome/browser/chromeos/gdata/drive_webapps_registry.h"
 #include "chrome/browser/chromeos/gdata/gdata_file_system.h"
 #include "chrome/browser/chromeos/gdata/gdata_test_util.h"
 #include "chrome/browser/chromeos/gdata/gdata_uploader.h"
 #include "chrome/browser/chromeos/gdata/gdata_util.h"
 #include "chrome/browser/chromeos/gdata/mock_directory_change_observer.h"
+#include "chrome/browser/chromeos/gdata/mock_drive_cache_observer.h"
 #include "chrome/browser/chromeos/gdata/mock_drive_service.h"
-#include "chrome/browser/chromeos/gdata/mock_gdata_cache_observer.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::AtLeast;
 using ::testing::Eq;
 using ::testing::NotNull;
@@ skipping 167 matching lines @@
   GDataFileSystemTest()
       : ui_thread_(content::BrowserThread::UI, &message_loop_),
         io_thread_(content::BrowserThread::IO),
         cache_(NULL),
         file_system_(NULL),
         mock_drive_service_(NULL),
         mock_webapps_registry_(NULL),
         num_callback_invocations_(0),
         expected_error_(GDATA_FILE_OK),
         expected_cache_state_(0),
-        expected_sub_dir_type_(GDataCache::CACHE_TYPE_META),
+        expected_sub_dir_type_(DriveCache::CACHE_TYPE_META),
         expected_success_(true),
         expect_outgoing_symlink_(false),
         root_feed_changestamp_(0) {
   }
 
   virtual void SetUp() OVERRIDE {
     chromeos::CrosLibrary::Initialize(true /* use_stub */);
     io_thread_.StartIOThread();
 
     profile_.reset(new TestingProfile);
 
     callback_helper_ = new CallbackHelper;
 
     // Allocate and keep a pointer to the mock, and inject it into the
     // GDataFileSystem object, which will own the mock object.
     mock_drive_service_ = new StrictMock<MockDriveService>;
 
     EXPECT_CALL(*mock_drive_service_, Initialize(profile_.get())).Times(1);
 
     // Likewise, this will be owned by GDataFileSystem.
     mock_free_disk_space_checker_ = new StrictMock<MockFreeDiskSpaceGetter>;
     SetFreeDiskSpaceGetterForTesting(mock_free_disk_space_checker_);
 
     scoped_refptr<base::SequencedWorkerPool> pool =
         content::BrowserThread::GetBlockingPool();
     blocking_task_runner_ =
         pool->GetSequencedTaskRunner(pool->GetSequenceToken());
 
-    cache_ = GDataCache::CreateGDataCacheOnUIThread(
-        GDataCache::GetCacheRootPath(profile_.get()), blocking_task_runner_);
+    cache_ = DriveCache::CreateDriveCacheOnUIThread(
+        DriveCache::GetCacheRootPath(profile_.get()), blocking_task_runner_);
 
     mock_uploader_.reset(new StrictMock<MockGDataUploader>);
     mock_webapps_registry_.reset(new StrictMock<MockDriveWebAppsRegistry>);
 
     ASSERT_FALSE(file_system_);
     file_system_ = new GDataFileSystem(profile_.get(),
                                        cache_,
                                        mock_drive_service_,
                                        mock_uploader_.get(),
                                        mock_webapps_registry_.get(),
                                        blocking_task_runner_);
 
-    mock_cache_observer_.reset(new StrictMock<MockGDataCacheObserver>);
+    mock_cache_observer_.reset(new StrictMock<MockDriveCacheObserver>);
     cache_->AddObserver(mock_cache_observer_.get());
 
     mock_directory_observer_.reset(new StrictMock<MockDirectoryChangeObserver>);
     file_system_->AddObserver(mock_directory_observer_.get());
 
     file_system_->Initialize();
     cache_->RequestInitializeOnUIThreadForTesting();
     test_util::RunBlockingPoolTask();
   }
 
@@ skipping 73 matching lines @@
 
   bool RemoveEntry(const FilePath& file_path) {
     return file_system_->RemoveEntryAndCacheLocally(file_path) ==
         GDATA_FILE_OK;
   }
 
   FilePath GetCachePathForFile(const std::string& resource_id,
                                const std::string& md5) {
     return cache_->GetCacheFilePath(resource_id,
                                     md5,
-                                    GDataCache::CACHE_TYPE_TMP,
-                                    GDataCache::CACHED_FILE_FROM_SERVER);
+                                    DriveCache::CACHE_TYPE_TMP,
+                                    DriveCache::CACHED_FILE_FROM_SERVER);
   }
 
   // Gets entry info by path synchronously.
   scoped_ptr<DriveEntryProto> GetEntryInfoByPathSync(
       const FilePath& file_path) {
     file_system_->GetEntryInfoByPath(
         file_path,
         base::Bind(&CallbackHelper::GetEntryInfoCallback,
                    callback_helper_.get()));
     test_util::RunBlockingPoolTask();
@@ skipping 61 matching lines @@
     DriveCacheEntry cache_entry;
     return GetCacheEntryFromOriginThread(resource_id, md5, &cache_entry);
   }
 
   // Returns true if the cache file exists for the given resource ID and MD5.
   bool CacheFileExists(const std::string& resource_id,
                        const std::string& md5) {
     const FilePath file_path = cache_->GetCacheFilePath(
         resource_id,
         md5,
-        GDataCache::CACHE_TYPE_TMP,
-        GDataCache::CACHED_FILE_FROM_SERVER);
+        DriveCache::CACHE_TYPE_TMP,
+        DriveCache::CACHED_FILE_FROM_SERVER);
     return file_util::PathExists(file_path);
   }
 
   void TestStoreToCache(
       const std::string& resource_id,
       const std::string& md5,
       const FilePath& source_path,
       GDataFileError expected_error,
       int expected_cache_state,
-      GDataCache::CacheSubDirectoryType expected_sub_dir_type) {
+      DriveCache::CacheSubDirectoryType expected_sub_dir_type) {
     expected_error_ = expected_error;
     expected_cache_state_ = expected_cache_state;
     expected_sub_dir_type_ = expected_sub_dir_type;
 
     cache_->StoreOnUIThread(
         resource_id, md5, source_path,
-        GDataCache::FILE_OPERATION_COPY,
+        DriveCache::FILE_OPERATION_COPY,
         base::Bind(&GDataFileSystemTest::VerifyCacheFileState,
                    base::Unretained(this)));
 
     test_util::RunBlockingPoolTask();
   }
 
   void TestPin(
       const std::string& resource_id,
       const std::string& md5,
       GDataFileError expected_error,
       int expected_cache_state,
-      GDataCache::CacheSubDirectoryType expected_sub_dir_type) {
+      DriveCache::CacheSubDirectoryType expected_sub_dir_type) {
     expected_error_ = expected_error;
     expected_cache_state_ = expected_cache_state;
     expected_sub_dir_type_ = expected_sub_dir_type;
 
     cache_->PinOnUIThread(
         resource_id, md5,
         base::Bind(&GDataFileSystemTest::VerifyCacheFileState,
                    base::Unretained(this)));
 
     test_util::RunBlockingPoolTask();
   }
 
   void TestMarkDirty(
       const std::string& resource_id,
       const std::string& md5,
       GDataFileError expected_error,
       int expected_cache_state,
-      GDataCache::CacheSubDirectoryType expected_sub_dir_type) {
+      DriveCache::CacheSubDirectoryType expected_sub_dir_type) {
     expected_error_ = expected_error;
     expected_cache_state_ = expected_cache_state;
     expected_sub_dir_type_ = expected_sub_dir_type;
     expect_outgoing_symlink_ = false;
 
     cache_->MarkDirtyOnUIThread(
         resource_id, md5,
         base::Bind(&GDataFileSystemTest::VerifyMarkDirty,
                    base::Unretained(this)));
 
@@ skipping 16 matching lines @@
     } else {
       EXPECT_TRUE(cache_file_path.empty());
     }
   }
 
   void TestCommitDirty(
       const std::string& resource_id,
       const std::string& md5,
       GDataFileError expected_error,
       int expected_cache_state,
-      GDataCache::CacheSubDirectoryType expected_sub_dir_type) {
+      DriveCache::CacheSubDirectoryType expected_sub_dir_type) {
     expected_error_ = expected_error;
     expected_cache_state_ = expected_cache_state;
     expected_sub_dir_type_ = expected_sub_dir_type;
     expect_outgoing_symlink_ = true;
 
     cache_->CommitDirtyOnUIThread(
         resource_id, md5,
         base::Bind(&GDataFileSystemTest::VerifyCacheFileState,
                    base::Unretained(this)));
 
     test_util::RunBlockingPoolTask();
   }
 
   // Verify the file identified by |resource_id| and |md5| is in the expected
   // cache state after |OpenFile|, that is, marked dirty and has no outgoing
   // symlink, etc.
   void VerifyCacheStateAfterOpenFile(GDataFileError error,
                                      const std::string& resource_id,
                                      const std::string& md5,
                                      const FilePath& cache_file_path) {
     expected_error_ = GDATA_FILE_OK;
     expected_cache_state_ = (test_util::TEST_CACHE_STATE_PRESENT |
                              test_util::TEST_CACHE_STATE_DIRTY |
                              test_util::TEST_CACHE_STATE_PERSISTENT);
-    expected_sub_dir_type_ = GDataCache::CACHE_TYPE_PERSISTENT;
+    expected_sub_dir_type_ = DriveCache::CACHE_TYPE_PERSISTENT;
     expect_outgoing_symlink_ = false;
     VerifyMarkDirty(error, resource_id, md5, cache_file_path);
   }
 
   // Verify the file identified by |resource_id| and |md5| is in the expected
   // cache state after |CloseFile|, that is, marked dirty and has an outgoing
   // symlink, etc.
   void VerifyCacheStateAfterCloseFile(GDataFileError error,
                                       const std::string& resource_id,
                                       const std::string& md5) {
     expected_error_ = GDATA_FILE_OK;
     expected_cache_state_ = (test_util::TEST_CACHE_STATE_PRESENT |
                              test_util::TEST_CACHE_STATE_DIRTY |
                              test_util::TEST_CACHE_STATE_PERSISTENT);
-    expected_sub_dir_type_ = GDataCache::CACHE_TYPE_PERSISTENT;
+    expected_sub_dir_type_ = DriveCache::CACHE_TYPE_PERSISTENT;
     expect_outgoing_symlink_ = true;
     VerifyCacheFileState(error, resource_id, md5);
   }
 
   void VerifyCacheFileState(GDataFileError error,
                             const std::string& resource_id,
                             const std::string& md5) {
     ++num_callback_invocations_;
 
     EXPECT_EQ(expected_error_, error);
 
     // Verify cache map.
     DriveCacheEntry cache_entry;
     const bool cache_entry_found =
         GetCacheEntryFromOriginThread(resource_id, md5, &cache_entry);
     if (test_util::ToCacheEntry(expected_cache_state_).is_present() ||
         test_util::ToCacheEntry(expected_cache_state_).is_pinned()) {
       ASSERT_TRUE(cache_entry_found);
       EXPECT_TRUE(test_util::CacheStatesEqual(
           test_util::ToCacheEntry(expected_cache_state_),
           cache_entry));
       EXPECT_EQ(expected_sub_dir_type_,
-                GDataCache::GetSubDirectoryType(cache_entry));
+                DriveCache::GetSubDirectoryType(cache_entry));
     } else {
       EXPECT_FALSE(cache_entry_found);
     }
 
     // Verify actual cache file.
     FilePath dest_path = cache_->GetCacheFilePath(
         resource_id,
         md5,
         test_util::ToCacheEntry(expected_cache_state_).is_pinned() ||
         test_util::ToCacheEntry(expected_cache_state_).is_dirty() ?
-                GDataCache::CACHE_TYPE_PERSISTENT :
-                GDataCache::CACHE_TYPE_TMP,
+                DriveCache::CACHE_TYPE_PERSISTENT :
+                DriveCache::CACHE_TYPE_TMP,
         test_util::ToCacheEntry(expected_cache_state_).is_dirty() ?
-            GDataCache::CACHED_FILE_LOCALLY_MODIFIED :
-            GDataCache::CACHED_FILE_FROM_SERVER);
+            DriveCache::CACHED_FILE_LOCALLY_MODIFIED :
+            DriveCache::CACHED_FILE_FROM_SERVER);
     bool exists = file_util::PathExists(dest_path);
     if (test_util::ToCacheEntry(expected_cache_state_).is_present())
       EXPECT_TRUE(exists);
     else
       EXPECT_FALSE(exists);
 
     // Verify symlink in pinned dir.
     FilePath symlink_path = cache_->GetCacheFilePath(
         resource_id,
         std::string(),
-        GDataCache::CACHE_TYPE_PINNED,
-        GDataCache::CACHED_FILE_FROM_SERVER);
+        DriveCache::CACHE_TYPE_PINNED,
+        DriveCache::CACHED_FILE_FROM_SERVER);
     // Check that pin symlink exists, without dereferencing to target path.
     exists = file_util::IsLink(symlink_path);
     if (test_util::ToCacheEntry(expected_cache_state_).is_pinned()) {
       EXPECT_TRUE(exists);
       FilePath target_path;
       EXPECT_TRUE(file_util::ReadSymbolicLink(symlink_path, &target_path));
       if (test_util::ToCacheEntry(expected_cache_state_).is_present())
         EXPECT_EQ(dest_path, target_path);
       else
         EXPECT_EQ(kSymLinkToDevNull, target_path.value());
     } else {
       EXPECT_FALSE(exists);
     }
 
     // Verify symlink in outgoing dir.
     symlink_path = cache_->GetCacheFilePath(
         resource_id,
         std::string(),
-        GDataCache::CACHE_TYPE_OUTGOING,
-        GDataCache::CACHED_FILE_FROM_SERVER);
+        DriveCache::CACHE_TYPE_OUTGOING,
+        DriveCache::CACHED_FILE_FROM_SERVER);
     // Check that outgoing symlink exists, without dereferencing to target path.
     exists = file_util::IsLink(symlink_path);
     if (expect_outgoing_symlink_ &&
         test_util::ToCacheEntry(expected_cache_state_).is_dirty()) {
       EXPECT_TRUE(exists);
       FilePath target_path;
       EXPECT_TRUE(file_util::ReadSymbolicLink(symlink_path, &target_path));
       EXPECT_TRUE(target_path.value() != kSymLinkToDevNull);
       if (test_util::ToCacheEntry(expected_cache_state_).is_present())
         EXPECT_EQ(dest_path, target_path);
@@ skipping 196 matching lines @@
   };
 
   MessageLoopForUI message_loop_;
   // The order of the test threads is important, do not change the order.
   // See also content/browser/browser_thread_impl.cc.
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread io_thread_;
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
   scoped_ptr<TestingProfile> profile_;
   scoped_refptr<CallbackHelper> callback_helper_;
-  GDataCache* cache_;
+  DriveCache* cache_;
   scoped_ptr<StrictMock<MockGDataUploader> > mock_uploader_;
   GDataFileSystem* file_system_;
   StrictMock<MockDriveService>* mock_drive_service_;
   scoped_ptr<StrictMock<MockDriveWebAppsRegistry> > mock_webapps_registry_;
   StrictMock<MockFreeDiskSpaceGetter>* mock_free_disk_space_checker_;
-  scoped_ptr<StrictMock<MockGDataCacheObserver> > mock_cache_observer_;
+  scoped_ptr<StrictMock<MockDriveCacheObserver> > mock_cache_observer_;
   scoped_ptr<StrictMock<MockDirectoryChangeObserver> > mock_directory_observer_;
 
   int num_callback_invocations_;
   GDataFileError expected_error_;
   int expected_cache_state_;
-  GDataCache::CacheSubDirectoryType expected_sub_dir_type_;
+  DriveCache::CacheSubDirectoryType expected_sub_dir_type_;
   bool expected_success_;
   bool expect_outgoing_symlink_;
   std::string expected_file_extension_;
   int root_feed_changestamp_;
   static bool cros_initialized_;
 };
 
 bool GDataFileSystemTest::cros_initialized_ = false;
 
 void AsyncInitializationCallback(
@@ skipping 1192 matching lines @@
       .WillOnce(Return(0))
       .WillOnce(Return(file_size + kMinFreeSpace))
       .WillOnce(Return(file_size + kMinFreeSpace));
 
   // Store something in the temporary cache directory.
   TestStoreToCache("<resource_id>",
                    "<md5>",
                    GetTestFilePath("root_feed.json"),
                    GDATA_FILE_OK,
                    test_util::TEST_CACHE_STATE_PRESENT,
-                   GDataCache::CACHE_TYPE_TMP);
+                   DriveCache::CACHE_TYPE_TMP);
   ASSERT_TRUE(CacheEntryExists("<resource_id>", "<md5>"));
   ASSERT_TRUE(CacheFileExists("<resource_id>", "<md5>"));
 
   // Before Download starts metadata from server will be fetched.
   // We will read content url from the result.
   scoped_ptr<base::Value> document(LoadJSONFile("document_to_download.json"));
   SetExpectationsForGetDocumentEntry(&document, "file:2_file_resource_id");
 
   // The file is obtained with the mock DriveService, because of we freed up the
   // space.
@@ skipping 78 matching lines @@
   FilePath downloaded_file = GetCachePathForFile(
       entry_proto->resource_id(),
       entry_proto->file_specific_info().file_md5());
 
   // Store something as cached version of this file.
   TestStoreToCache(entry_proto->resource_id(),
                    entry_proto->file_specific_info().file_md5(),
                    GetTestFilePath("root_feed.json"),
                    GDATA_FILE_OK,
                    test_util::TEST_CACHE_STATE_PRESENT,
-                   GDataCache::CACHE_TYPE_TMP);
+                   DriveCache::CACHE_TYPE_TMP);
 
   // Make sure we don't fetch metadata for downloading file.
   EXPECT_CALL(*mock_drive_service_, GetDocumentEntry(_, _)).Times(0);
 
   // Make sure we don't call downloads at all.
   EXPECT_CALL(*mock_drive_service_,
               DownloadFile(file_in_root,
                            downloaded_file,
                            GURL("https://file_content_url_changed/"),
                            _, _))
@@ skipping 87 matching lines @@
   FilePath downloaded_file = GetCachePathForFile(
       entry_proto->resource_id(),
       entry_proto->file_specific_info().file_md5());
 
   // Store something as cached version of this file.
   TestStoreToCache(entry_proto->resource_id(),
                    entry_proto->file_specific_info().file_md5(),
                    GetTestFilePath("root_feed.json"),
                    GDATA_FILE_OK,
                    test_util::TEST_CACHE_STATE_PRESENT,
-                   GDataCache::CACHE_TYPE_TMP);
+                   DriveCache::CACHE_TYPE_TMP);
 
   // The file is obtained from the cache.
   // Make sure we don't call downloads at all.
   EXPECT_CALL(*mock_drive_service_, DownloadFile(_, _, _, _, _))
       .Times(0);
 
   file_system_->GetFileByResourceId(entry_proto->resource_id(),
                                     callback,
                                     GetContentCallback());
   test_util::RunBlockingPoolTask();
@@ skipping 13 matching lines @@
   const FilePath kFilePath(FILE_PATH_LITERAL("drive/File 1.txt"));
   const std::string kResourceId("file:2_file_resource_id");
   const std::string kMd5("3b4382ebefec6e743578c76bbd0575ce");
 
   // Pin the file so it'll be store in "persistent" directory.
   EXPECT_CALL(*mock_cache_observer_, OnCachePinned(kResourceId, kMd5)).Times(1);
   TestPin(kResourceId,
           kMd5,
           GDATA_FILE_OK,
           test_util::TEST_CACHE_STATE_PINNED,
-          GDataCache::CACHE_TYPE_TMP);
+          DriveCache::CACHE_TYPE_TMP);
 
   // First store a file to cache. A cache file will be created at:
   // GCache/v1/persistent/<kResourceId>.<kMd5>
   const FilePath original_cache_file_path =
-      GDataCache::GetCacheRootPath(profile_.get())
+      DriveCache::GetCacheRootPath(profile_.get())
       .AppendASCII("persistent")
       .AppendASCII(kResourceId + "." + kMd5);
   TestStoreToCache(kResourceId,
                    kMd5,
                    GetTestFilePath("root_feed.json"),  // Anything works.
                    GDATA_FILE_OK,
                    test_util::TEST_CACHE_STATE_PRESENT |
                    test_util::TEST_CACHE_STATE_PINNED |
                    test_util::TEST_CACHE_STATE_PERSISTENT,
-                   GDataCache::CACHE_TYPE_PERSISTENT);
+                   DriveCache::CACHE_TYPE_PERSISTENT);
   ASSERT_TRUE(file_util::PathExists(original_cache_file_path));
 
   // Add the dirty bit. The cache file will be renamed to
   // GCache/v1/persistent/<kResourceId>.local
   TestMarkDirty(kResourceId,
                 kMd5,
                 GDATA_FILE_OK,
                 test_util::TEST_CACHE_STATE_PRESENT |
                 test_util::TEST_CACHE_STATE_PINNED |
                 test_util::TEST_CACHE_STATE_DIRTY |
                 test_util::TEST_CACHE_STATE_PERSISTENT,
-                GDataCache::CACHE_TYPE_PERSISTENT);
+                DriveCache::CACHE_TYPE_PERSISTENT);
   const FilePath dirty_cache_file_path =
-      GDataCache::GetCacheRootPath(profile_.get())
+      DriveCache::GetCacheRootPath(profile_.get())
       .AppendASCII("persistent")
       .AppendASCII(kResourceId + ".local");
   ASSERT_FALSE(file_util::PathExists(original_cache_file_path));
   ASSERT_TRUE(file_util::PathExists(dirty_cache_file_path));
 
   // Modify the cached file.
   const std::string kDummyCacheContent("modification to the cache");
   ASSERT_TRUE(file_util::WriteFile(dirty_cache_file_path,
                                    kDummyCacheContent.c_str(),
                                    kDummyCacheContent.size()));
 
   // Commit the dirty bit. The cache file name remains the same
   // but a symlink will be created at:
   // GCache/v1/outgoing/<kResourceId>
   EXPECT_CALL(*mock_cache_observer_, OnCacheCommitted(kResourceId)).Times(1);
   TestCommitDirty(kResourceId,
                   kMd5,
                   GDATA_FILE_OK,
                   test_util::TEST_CACHE_STATE_PRESENT |
                   test_util::TEST_CACHE_STATE_PINNED |
                   test_util::TEST_CACHE_STATE_DIRTY |
                   test_util::TEST_CACHE_STATE_PERSISTENT,
-                  GDataCache::CACHE_TYPE_PERSISTENT);
+                  DriveCache::CACHE_TYPE_PERSISTENT);
   const FilePath outgoing_symlink_path =
-      GDataCache::GetCacheRootPath(profile_.get())
+      DriveCache::GetCacheRootPath(profile_.get())
       .AppendASCII("outgoing")
       .AppendASCII(kResourceId);
   ASSERT_TRUE(file_util::PathExists(dirty_cache_file_path));
   ASSERT_TRUE(file_util::PathExists(outgoing_symlink_path));
 
   // Create a DocumentEntry, which is needed to mock
   // GDataUploaderInterface::UploadExistingFile().
   // TODO(satorux): This should be cleaned up. crbug.com/134240.
   DocumentEntry* document_entry = NULL;
   scoped_ptr<base::Value> value(LoadJSONFile("root_feed.json"));
@@ skipping 260 matching lines @@
 
   // Try to close the same file twice.
   file_system_->CloseFile(kFileInRoot, close_file_callback);
   message_loop_.Run();
 
   // It must fail.
   EXPECT_EQ(GDATA_FILE_ERROR_NOT_FOUND, callback_helper_->last_error_);
 }
 
 }   // namespace gdata