src/chrome/browser/chromeos/drive/file_cache_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/drive/file_cache.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/callback_helpers.h"
  11 #include "base/files/file_enumerator.h"
  12 #include "base/files/file_util.h"
  13 #include "base/files/scoped_temp_dir.h"
  14 #include "base/md5.h"
  15 #include "base/path_service.h"
  16 #include "chrome/browser/chromeos/drive/drive.pb.h"
  17 #include "chrome/browser/chromeos/drive/fake_free_disk_space_getter.h"
  18 #include "chrome/browser/chromeos/drive/file_system_util.h"
  19 #include "chrome/browser/chromeos/drive/resource_metadata_storage.h"
  20 #include "chrome/browser/chromeos/drive/test_util.h"
  21 #include "content/public/test/test_browser_thread_bundle.h"
  22 #include "google_apis/drive/test_util.h"
  23 #include "testing/gtest/include/gtest/gtest.h"
  24
  25 namespace drive {
  26 namespace internal {
  27 namespace {
  28
  29 const char kCacheFileDirectory[] = "files";
  30
  31 }  // namespace
  32
  33 // Tests FileCache methods working with the blocking task runner.
  34 class FileCacheTest : public testing::Test {
  35  protected:
  36   virtual void SetUp() override {
  37     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
  38     const base::FilePath metadata_dir = temp_dir_.path().AppendASCII("meta");
  39     cache_files_dir_ = temp_dir_.path().AppendASCII(kCacheFileDirectory);
  40
  41     ASSERT_TRUE(base::CreateDirectory(metadata_dir));
  42     ASSERT_TRUE(base::CreateDirectory(cache_files_dir_));
  43
  44     fake_free_disk_space_getter_.reset(new FakeFreeDiskSpaceGetter);
  45
  46     metadata_storage_.reset(new ResourceMetadataStorage(
  47         metadata_dir,
  48         base::MessageLoopProxy::current().get()));
  49     ASSERT_TRUE(metadata_storage_->Initialize());
  50
  51     cache_.reset(new FileCache(
  52         metadata_storage_.get(),
  53         cache_files_dir_,
  54         base::MessageLoopProxy::current().get(),
  55         fake_free_disk_space_getter_.get()));
  56     ASSERT_TRUE(cache_->Initialize());
  57   }
  58
  59   static bool RenameCacheFilesToNewFormat(FileCache* cache) {
  60     return cache->RenameCacheFilesToNewFormat();
  61   }
  62
  63   content::TestBrowserThreadBundle thread_bundle_;
  64   base::ScopedTempDir temp_dir_;
  65   base::FilePath cache_files_dir_;
  66
  67   scoped_ptr<ResourceMetadataStorage, test_util::DestroyHelperForTests>
  68       metadata_storage_;
  69   scoped_ptr<FileCache, test_util::DestroyHelperForTests> cache_;
  70   scoped_ptr<FakeFreeDiskSpaceGetter> fake_free_disk_space_getter_;
  71 };
  72
  73 TEST_F(FileCacheTest, RecoverFilesFromCacheDirectory) {
  74   base::FilePath dir_source_root;
  75   EXPECT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &dir_source_root));
  76   const base::FilePath src_path =
  77       dir_source_root.AppendASCII("chrome/test/data/chromeos/drive/image.png");
  78
  79   // Store files. This file should not be moved.
  80   ResourceEntry entry;
  81   entry.set_local_id("id_foo");
  82   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
  83   EXPECT_EQ(FILE_ERROR_OK, cache_->Store("id_foo", "md5", src_path,
  84                                          FileCache::FILE_OPERATION_COPY));
  85
  86   // Set up files in the cache directory. These files should be moved.
  87   const base::FilePath file_directory =
  88       temp_dir_.path().AppendASCII(kCacheFileDirectory);
  89   ASSERT_TRUE(base::CopyFile(src_path, file_directory.AppendASCII("id_bar")));
  90   ASSERT_TRUE(base::CopyFile(src_path, file_directory.AppendASCII("id_baz")));
  91
  92   // Insert a dirty entry with "id_baz" to |recovered_cache_info|.
  93   // This should not prevent the file from being recovered.
  94   ResourceMetadataStorage::RecoveredCacheInfoMap recovered_cache_info;
  95   recovered_cache_info["id_baz"].is_dirty = true;
  96   recovered_cache_info["id_baz"].title = "baz.png";
  97
  98   // Recover files.
  99   const base::FilePath dest_directory = temp_dir_.path().AppendASCII("dest");
 100   EXPECT_TRUE(cache_->RecoverFilesFromCacheDirectory(dest_directory,
 101                                                      recovered_cache_info));
 102
 103   // Only two files should be recovered.
 104   EXPECT_TRUE(base::PathExists(dest_directory));
 105   // base::FileEnumerator does not guarantee the order.
 106   if (base::PathExists(dest_directory.AppendASCII("baz00000001.png"))) {
 107     EXPECT_TRUE(base::ContentsEqual(
 108         src_path,
 109         dest_directory.AppendASCII("baz00000001.png")));
 110     EXPECT_TRUE(base::ContentsEqual(
 111         src_path,
 112         dest_directory.AppendASCII("image00000002.png")));
 113   } else {
 114     EXPECT_TRUE(base::ContentsEqual(
 115         src_path,
 116         dest_directory.AppendASCII("image00000001.png")));
 117     EXPECT_TRUE(base::ContentsEqual(
 118         src_path,
 119         dest_directory.AppendASCII("baz00000002.png")));
 120   }
 121   EXPECT_FALSE(base::PathExists(
 122       dest_directory.AppendASCII("image00000003.png")));
 123 }
 124
 125 TEST_F(FileCacheTest, FreeDiskSpaceIfNeededFor) {
 126   base::FilePath src_file;
 127   ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(), &src_file));
 128
 129   // Store a file as a 'temporary' file and remember the path.
 130   const std::string id_tmp = "id_tmp", md5_tmp = "md5_tmp";
 131
 132   ResourceEntry entry;
 133   entry.set_local_id(id_tmp);
 134   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 135   ASSERT_EQ(FILE_ERROR_OK,
 136             cache_->Store(id_tmp, md5_tmp, src_file,
 137                           FileCache::FILE_OPERATION_COPY));
 138   base::FilePath tmp_path;
 139   ASSERT_EQ(FILE_ERROR_OK, cache_->GetFile(id_tmp, &tmp_path));
 140
 141   // Store a file as a pinned file and remember the path.
 142   const std::string id_pinned = "id_pinned", md5_pinned = "md5_pinned";
 143   entry.Clear();
 144   entry.set_local_id(id_pinned);
 145   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 146   ASSERT_EQ(FILE_ERROR_OK,
 147             cache_->Store(id_pinned, md5_pinned, src_file,
 148                           FileCache::FILE_OPERATION_COPY));
 149   ASSERT_EQ(FILE_ERROR_OK, cache_->Pin(id_pinned));
 150   base::FilePath pinned_path;
 151   ASSERT_EQ(FILE_ERROR_OK, cache_->GetFile(id_pinned, &pinned_path));
 152
 153   // Call FreeDiskSpaceIfNeededFor().
 154   fake_free_disk_space_getter_->set_default_value(test_util::kLotsOfSpace);
 155   fake_free_disk_space_getter_->PushFakeValue(0);
 156   const int64 kNeededBytes = 1;
 157   EXPECT_TRUE(cache_->FreeDiskSpaceIfNeededFor(kNeededBytes));
 158
 159   // Only 'temporary' file gets removed.
 160   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id_tmp, &entry));
 161   EXPECT_FALSE(entry.file_specific_info().cache_state().is_present());
 162   EXPECT_FALSE(base::PathExists(tmp_path));
 163
 164   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id_pinned, &entry));
 165   EXPECT_TRUE(entry.file_specific_info().cache_state().is_present());
 166   EXPECT_TRUE(base::PathExists(pinned_path));
 167
 168   // Returns false when disk space cannot be freed.
 169   fake_free_disk_space_getter_->set_default_value(0);
 170   EXPECT_FALSE(cache_->FreeDiskSpaceIfNeededFor(kNeededBytes));
 171 }
 172
 173 TEST_F(FileCacheTest, GetFile) {
 174   const base::FilePath src_file_path = temp_dir_.path().Append("test.dat");
 175   const std::string src_contents = "test";
 176   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(src_file_path,
 177                                                         src_contents));
 178   std::string id("id1");
 179   std::string md5(base::MD5String(src_contents));
 180
 181   const base::FilePath cache_file_directory =
 182       temp_dir_.path().AppendASCII(kCacheFileDirectory);
 183
 184   // Try to get an existing file from cache.
 185   ResourceEntry entry;
 186   entry.set_local_id(id);
 187   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 188   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(id, md5, src_file_path,
 189                                          FileCache::FILE_OPERATION_COPY));
 190   base::FilePath cache_file_path;
 191   EXPECT_EQ(FILE_ERROR_OK, cache_->GetFile(id, &cache_file_path));
 192   EXPECT_EQ(
 193       cache_file_directory.AppendASCII(util::EscapeCacheFileName(id)).value(),
 194       cache_file_path.value());
 195
 196   std::string contents;
 197   EXPECT_TRUE(base::ReadFileToString(cache_file_path, &contents));
 198   EXPECT_EQ(src_contents, contents);
 199
 200   // Get file from cache with different id.
 201   id = "id2";
 202   entry.Clear();
 203   entry.set_local_id(id);
 204   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 205   EXPECT_EQ(FILE_ERROR_NOT_FOUND, cache_->GetFile(id, &cache_file_path));
 206
 207   // Pin a non-existent file.
 208   EXPECT_EQ(FILE_ERROR_OK, cache_->Pin(id));
 209
 210   // Get the non-existent pinned file from cache.
 211   EXPECT_EQ(FILE_ERROR_NOT_FOUND, cache_->GetFile(id, &cache_file_path));
 212
 213   // Get a previously pinned and stored file from cache.
 214   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(id, md5, src_file_path,
 215                                          FileCache::FILE_OPERATION_COPY));
 216
 217   EXPECT_EQ(FILE_ERROR_OK, cache_->GetFile(id, &cache_file_path));
 218   EXPECT_EQ(
 219       cache_file_directory.AppendASCII(util::EscapeCacheFileName(id)).value(),
 220       cache_file_path.value());
 221
 222   contents.clear();
 223   EXPECT_TRUE(base::ReadFileToString(cache_file_path, &contents));
 224   EXPECT_EQ(src_contents, contents);
 225 }
 226
 227 TEST_F(FileCacheTest, Store) {
 228   const base::FilePath src_file_path = temp_dir_.path().Append("test.dat");
 229   const std::string src_contents = "test";
 230   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(src_file_path,
 231                                                         src_contents));
 232   std::string id("id");
 233   std::string md5(base::MD5String(src_contents));
 234
 235   // Store a file.
 236   ResourceEntry entry;
 237   entry.set_local_id(id);
 238   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 239   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(
 240       id, md5, src_file_path, FileCache::FILE_OPERATION_COPY));
 241
 242   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 243   EXPECT_TRUE(entry.file_specific_info().cache_state().is_present());
 244   EXPECT_EQ(md5, entry.file_specific_info().cache_state().md5());
 245
 246   base::FilePath cache_file_path;
 247   EXPECT_EQ(FILE_ERROR_OK, cache_->GetFile(id, &cache_file_path));
 248   EXPECT_TRUE(base::ContentsEqual(src_file_path, cache_file_path));
 249
 250   // Store a non-existent file.
 251   EXPECT_EQ(FILE_ERROR_FAILED, cache_->Store(
 252       id, md5, base::FilePath::FromUTF8Unsafe("non_existent_file"),
 253       FileCache::FILE_OPERATION_COPY));
 254
 255   // Passing empty MD5 marks the entry as dirty.
 256   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(
 257       id, std::string(), src_file_path, FileCache::FILE_OPERATION_COPY));
 258
 259   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 260   EXPECT_TRUE(entry.file_specific_info().cache_state().is_present());
 261   EXPECT_TRUE(entry.file_specific_info().cache_state().md5().empty());
 262   EXPECT_TRUE(entry.file_specific_info().cache_state().is_dirty());
 263
 264   // No free space available.
 265   fake_free_disk_space_getter_->set_default_value(0);
 266
 267   EXPECT_EQ(FILE_ERROR_NO_LOCAL_SPACE, cache_->Store(
 268       id, md5, src_file_path, FileCache::FILE_OPERATION_COPY));
 269 }
 270
 271 TEST_F(FileCacheTest, PinAndUnpin) {
 272   const base::FilePath src_file_path = temp_dir_.path().Append("test.dat");
 273   const std::string src_contents = "test";
 274   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(src_file_path,
 275                                                         src_contents));
 276   std::string id("id_present");
 277   std::string md5(base::MD5String(src_contents));
 278
 279   // Store a file.
 280   ResourceEntry entry;
 281   entry.set_local_id(id);
 282   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 283   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(
 284       id, md5, src_file_path, FileCache::FILE_OPERATION_COPY));
 285
 286   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 287   EXPECT_FALSE(entry.file_specific_info().cache_state().is_pinned());
 288
 289   // Pin the existing file.
 290   EXPECT_EQ(FILE_ERROR_OK, cache_->Pin(id));
 291
 292   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 293   EXPECT_TRUE(entry.file_specific_info().cache_state().is_pinned());
 294
 295   // Unpin the file.
 296   EXPECT_EQ(FILE_ERROR_OK, cache_->Unpin(id));
 297
 298   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 299   EXPECT_FALSE(entry.file_specific_info().cache_state().is_pinned());
 300
 301   // Pin a non-present file.
 302   std::string id_non_present = "id_non_present";
 303   entry.Clear();
 304   entry.set_local_id(id_non_present);
 305   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 306   EXPECT_EQ(FILE_ERROR_OK, cache_->Pin(id_non_present));
 307
 308   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id_non_present, &entry));
 309   EXPECT_TRUE(entry.file_specific_info().cache_state().is_pinned());
 310
 311   // Unpin the previously pinned non-existent file.
 312   EXPECT_EQ(FILE_ERROR_OK, cache_->Unpin(id_non_present));
 313
 314   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id_non_present, &entry));
 315   EXPECT_FALSE(entry.file_specific_info().has_cache_state());
 316
 317   // Unpin a file that doesn't exist in cache and is not pinned.
 318   EXPECT_EQ(FILE_ERROR_NOT_FOUND, cache_->Unpin("id_non_existent"));
 319 }
 320
 321 TEST_F(FileCacheTest, MountUnmount) {
 322   const base::FilePath src_file_path = temp_dir_.path().Append("test.dat");
 323   const std::string src_contents = "test";
 324   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(src_file_path,
 325                                                         src_contents));
 326   std::string id("id_present");
 327   std::string md5(base::MD5String(src_contents));
 328
 329   // Store a file.
 330   ResourceEntry entry;
 331   entry.set_local_id(id);
 332   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 333   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(
 334       id, md5, src_file_path, FileCache::FILE_OPERATION_COPY));
 335
 336   // Mark the file mounted.
 337   base::FilePath cache_file_path;
 338   EXPECT_EQ(FILE_ERROR_OK, cache_->MarkAsMounted(id, &cache_file_path));
 339
 340   // Try to remove it.
 341   EXPECT_EQ(FILE_ERROR_IN_USE, cache_->Remove(id));
 342
 343   // Clear mounted state of the file.
 344   EXPECT_EQ(FILE_ERROR_OK, cache_->MarkAsUnmounted(cache_file_path));
 345
 346   // Try to remove again.
 347   EXPECT_EQ(FILE_ERROR_OK, cache_->Remove(id));
 348 }
 349
 350 TEST_F(FileCacheTest, OpenForWrite) {
 351   // Prepare a file.
 352   base::FilePath src_file;
 353   ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(), &src_file));
 354
 355   const std::string id = "id";
 356   ResourceEntry entry;
 357   entry.set_local_id(id);
 358   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 359   ASSERT_EQ(FILE_ERROR_OK, cache_->Store(id, "md5", src_file,
 360                                          FileCache::FILE_OPERATION_COPY));
 361   EXPECT_EQ(0, entry.file_info().last_modified());
 362
 363   // Entry is not dirty nor opened.
 364   EXPECT_FALSE(cache_->IsOpenedForWrite(id));
 365   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 366   EXPECT_FALSE(entry.file_specific_info().cache_state().is_dirty());
 367
 368   // Open (1).
 369   scoped_ptr<base::ScopedClosureRunner> file_closer1;
 370   EXPECT_EQ(FILE_ERROR_OK, cache_->OpenForWrite(id, &file_closer1));
 371   EXPECT_TRUE(cache_->IsOpenedForWrite(id));
 372
 373   // Entry is dirty.
 374   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 375   EXPECT_TRUE(entry.file_specific_info().cache_state().is_dirty());
 376
 377   // Open (2).
 378   scoped_ptr<base::ScopedClosureRunner> file_closer2;
 379   EXPECT_EQ(FILE_ERROR_OK, cache_->OpenForWrite(id, &file_closer2));
 380   EXPECT_TRUE(cache_->IsOpenedForWrite(id));
 381
 382   // Close (1).
 383   file_closer1.reset();
 384   base::RunLoop().RunUntilIdle();
 385   EXPECT_TRUE(cache_->IsOpenedForWrite(id));
 386
 387   // last_modified is updated.
 388   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 389   EXPECT_NE(0, entry.file_info().last_modified());
 390
 391   // Close (2).
 392   file_closer2.reset();
 393   base::RunLoop().RunUntilIdle();
 394   EXPECT_FALSE(cache_->IsOpenedForWrite(id));
 395
 396   // Try to open non-existent file.
 397   EXPECT_EQ(FILE_ERROR_NOT_FOUND,
 398             cache_->OpenForWrite("nonexistent_id", &file_closer1));
 399 }
 400
 401 TEST_F(FileCacheTest, UpdateMd5) {
 402   // Store test data.
 403   const base::FilePath src_file_path = temp_dir_.path().Append("test.dat");
 404   const std::string contents_before = "before";
 405   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(src_file_path,
 406                                                         contents_before));
 407   std::string id("id1");
 408   ResourceEntry entry;
 409   entry.set_local_id(id);
 410   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 411   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(id, base::MD5String(contents_before),
 412                                          src_file_path,
 413                                          FileCache::FILE_OPERATION_COPY));
 414
 415   // Modify the cache file.
 416   scoped_ptr<base::ScopedClosureRunner> file_closer;
 417   EXPECT_EQ(FILE_ERROR_OK, cache_->OpenForWrite(id, &file_closer));
 418   base::FilePath cache_file_path;
 419   EXPECT_EQ(FILE_ERROR_OK, cache_->GetFile(id, &cache_file_path));
 420   const std::string contents_after = "after";
 421   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(cache_file_path,
 422                                                         contents_after));
 423
 424   // Cannot update MD5 of an opend file.
 425   EXPECT_EQ(FILE_ERROR_IN_USE, cache_->UpdateMd5(id));
 426
 427   // Close file.
 428   file_closer.reset();
 429   base::RunLoop().RunUntilIdle();
 430
 431   // MD5 was cleared by OpenForWrite().
 432   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 433   EXPECT_TRUE(entry.file_specific_info().cache_state().md5().empty());
 434
 435   // Update MD5.
 436   EXPECT_EQ(FILE_ERROR_OK, cache_->UpdateMd5(id));
 437   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 438   EXPECT_EQ(base::MD5String(contents_after),
 439             entry.file_specific_info().cache_state().md5());
 440 }
 441
 442 TEST_F(FileCacheTest, ClearDirty) {
 443   // Prepare a file.
 444   base::FilePath src_file;
 445   ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(), &src_file));
 446
 447   const std::string id = "id";
 448   ResourceEntry entry;
 449   entry.set_local_id(id);
 450   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 451   ASSERT_EQ(FILE_ERROR_OK, cache_->Store(id, "md5", src_file,
 452                                          FileCache::FILE_OPERATION_COPY));
 453
 454   // Open the file.
 455   scoped_ptr<base::ScopedClosureRunner> file_closer;
 456   EXPECT_EQ(FILE_ERROR_OK, cache_->OpenForWrite(id, &file_closer));
 457
 458   // Entry is dirty.
 459   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 460   EXPECT_TRUE(entry.file_specific_info().cache_state().is_dirty());
 461
 462   // Cannot clear the dirty bit of an opened entry.
 463   EXPECT_EQ(FILE_ERROR_IN_USE, cache_->ClearDirty(id));
 464
 465   // Close the file and clear the dirty bit.
 466   file_closer.reset();
 467   base::RunLoop().RunUntilIdle();
 468   EXPECT_EQ(FILE_ERROR_OK, cache_->ClearDirty(id));
 469
 470   // Entry is not dirty.
 471   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->GetEntry(id, &entry));
 472   EXPECT_FALSE(entry.file_specific_info().cache_state().is_dirty());
 473 }
 474
 475 TEST_F(FileCacheTest, Remove) {
 476   const base::FilePath src_file_path = temp_dir_.path().Append("test.dat");
 477   const std::string src_contents = "test";
 478   EXPECT_TRUE(google_apis::test_util::WriteStringToFile(src_file_path,
 479                                                         src_contents));
 480   std::string id("id");
 481   std::string md5(base::MD5String(src_contents));
 482
 483   // First store a file to cache.
 484   ResourceEntry entry;
 485   entry.set_local_id(id);
 486   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 487   base::FilePath src_file;
 488   ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(), &src_file));
 489   EXPECT_EQ(FILE_ERROR_OK, cache_->Store(
 490       id, md5, src_file_path, FileCache::FILE_OPERATION_COPY));
 491
 492   base::FilePath cache_file_path;
 493   EXPECT_EQ(FILE_ERROR_OK, cache_->GetFile(id, &cache_file_path));
 494
 495   // Then try to remove existing file from cache.
 496   EXPECT_EQ(FILE_ERROR_OK, cache_->Remove(id));
 497   EXPECT_FALSE(base::PathExists(cache_file_path));
 498 }
 499
 500 TEST_F(FileCacheTest, RenameCacheFilesToNewFormat) {
 501   const base::FilePath file_directory =
 502       temp_dir_.path().AppendASCII(kCacheFileDirectory);
 503
 504   // File with an old style "<prefix>:<ID>.<MD5>" name.
 505   ASSERT_TRUE(google_apis::test_util::WriteStringToFile(
 506       file_directory.AppendASCII("file:id_koo.md5"), "koo"));
 507
 508   // File with multiple extensions should be removed.
 509   ASSERT_TRUE(google_apis::test_util::WriteStringToFile(
 510       file_directory.AppendASCII("id_kyu.md5.mounted"), "kyu (mounted)"));
 511   ASSERT_TRUE(google_apis::test_util::WriteStringToFile(
 512       file_directory.AppendASCII("id_kyu.md5"), "kyu"));
 513
 514   // Rename and verify the result.
 515   EXPECT_TRUE(RenameCacheFilesToNewFormat(cache_.get()));
 516   std::string contents;
 517   EXPECT_TRUE(base::ReadFileToString(file_directory.AppendASCII("id_koo"),
 518                                      &contents));
 519   EXPECT_EQ("koo", contents);
 520   contents.clear();
 521   EXPECT_TRUE(base::ReadFileToString(file_directory.AppendASCII("id_kyu"),
 522                                      &contents));
 523   EXPECT_EQ("kyu", contents);
 524
 525   // Rename again.
 526   EXPECT_TRUE(RenameCacheFilesToNewFormat(cache_.get()));
 527
 528   // Files with new style names are not affected.
 529   contents.clear();
 530   EXPECT_TRUE(base::ReadFileToString(file_directory.AppendASCII("id_koo"),
 531                                      &contents));
 532   EXPECT_EQ("koo", contents);
 533   contents.clear();
 534   EXPECT_TRUE(base::ReadFileToString(file_directory.AppendASCII("id_kyu"),
 535                                      &contents));
 536   EXPECT_EQ("kyu", contents);
 537 }
 538
 539 TEST_F(FileCacheTest, ClearAll) {
 540   const std::string id("1a2b");
 541   const std::string md5("abcdef0123456789");
 542
 543   // Store an existing file.
 544   ResourceEntry entry;
 545   entry.set_local_id(id);
 546   EXPECT_EQ(FILE_ERROR_OK, metadata_storage_->PutEntry(entry));
 547   base::FilePath src_file;
 548   ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(), &src_file));
 549   ASSERT_EQ(FILE_ERROR_OK,
 550             cache_->Store(id, md5, src_file, FileCache::FILE_OPERATION_COPY));
 551
 552   // Clear cache.
 553   EXPECT_TRUE(cache_->ClearAll());
 554
 555   // Verify that the cache is removed.
 556   EXPECT_TRUE(base::IsDirectoryEmpty(cache_files_dir_));
 557 }
 558
 559 }  // namespace internal
 560 }  // namespace drive