chrome/browser/media_galleries/fileapi/picasa_file_util_unittest.cc

   1 // Copyright 2013 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 <set>
   6 #include <string>
   7 #include <vector>
   8
   9 #include "base/bind_helpers.h"
  10 #include "base/files/file_path.h"
  11 #include "base/files/file_util.h"
  12 #include "base/files/scoped_temp_dir.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_vector.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "base/message_loop/message_loop_proxy.h"
  17 #include "base/run_loop.h"
  18 #include "base/strings/stringprintf.h"
  19 #include "base/time/time.h"
  20 #include "chrome/browser/media_galleries/fileapi/media_file_system_backend.h"
  21 #include "chrome/browser/media_galleries/fileapi/media_path_filter.h"
  22 #include "chrome/browser/media_galleries/fileapi/picasa_data_provider.h"
  23 #include "chrome/browser/media_galleries/fileapi/picasa_file_util.h"
  24 #include "chrome/browser/media_galleries/imported_media_gallery_registry.h"
  25 #include "chrome/common/media_galleries/picasa_types.h"
  26 #include "chrome/common/media_galleries/pmp_constants.h"
  27 #include "content/public/browser/browser_thread.h"
  28 #include "content/public/test/mock_special_storage_policy.h"
  29 #include "content/public/test/test_browser_thread.h"
  30 #include "content/public/test/test_file_system_options.h"
  31 #include "storage/browser/blob/shareable_file_reference.h"
  32 #include "storage/browser/fileapi/async_file_util.h"
  33 #include "storage/browser/fileapi/external_mount_points.h"
  34 #include "storage/browser/fileapi/file_system_context.h"
  35 #include "storage/browser/fileapi/file_system_operation_context.h"
  36 #include "storage/browser/fileapi/file_system_operation_runner.h"
  37 #include "storage/browser/fileapi/isolated_context.h"
  38 #include "testing/gtest/include/gtest/gtest.h"
  39
  40 using storage::FileSystemOperationContext;
  41 using storage::FileSystemOperation;
  42 using storage::FileSystemURL;
  43
  44 namespace picasa {
  45
  46 namespace {
  47
  48 base::Time::Exploded test_date_exploded = { 2013, 4, 0, 16, 0, 0, 0, 0 };
  49
  50 bool WriteJPEGHeader(const base::FilePath& path) {
  51   const char kJpegHeader[] = "\xFF\xD8\xFF";  // Per HTML5 specification.
  52   return base::WriteFile(path, kJpegHeader, arraysize(kJpegHeader)) != -1;
  53 }
  54
  55 class TestFolder {
  56  public:
  57   TestFolder(const std::string& name, const base::Time& timestamp,
  58              const std::string& uid, unsigned int image_files,
  59              unsigned int non_image_files)
  60       : name_(name),
  61         timestamp_(timestamp),
  62         uid_(uid),
  63         image_files_(image_files),
  64         non_image_files_(non_image_files),
  65         folder_info_("", base::Time(), "", base::FilePath()) {
  66   }
  67
  68   bool Init() {
  69     if (!folder_dir_.CreateUniqueTempDir())
  70       return false;
  71
  72     folder_info_ = AlbumInfo(name_, timestamp_, uid_, folder_dir_.path());
  73
  74     for (unsigned int i = 0; i < image_files_; ++i) {
  75       std::string image_filename = base::StringPrintf("img%05d.jpg", i);
  76       image_filenames_.insert(image_filename);
  77
  78       base::FilePath path = folder_dir_.path().AppendASCII(image_filename);
  79
  80       if (!WriteJPEGHeader(path))
  81         return false;
  82     }
  83
  84     for (unsigned int i = 0; i < non_image_files_; ++i) {
  85       base::FilePath path = folder_dir_.path().AppendASCII(
  86           base::StringPrintf("hello%05d.txt", i));
  87       if (base::WriteFile(path, NULL, 0) == -1)
  88         return false;
  89     }
  90
  91     return true;
  92   }
  93
  94   double GetVariantTimestamp() const {
  95     DCHECK(!folder_dir_.path().empty());
  96     base::Time variant_epoch = base::Time::FromLocalExploded(
  97         picasa::kPmpVariantTimeEpoch);
  98
  99     int64 microseconds_since_epoch =
 100         (folder_info_.timestamp - variant_epoch).InMicroseconds();
 101
 102     return static_cast<double>(microseconds_since_epoch) /
 103                                base::Time::kMicrosecondsPerDay;
 104   }
 105
 106   const std::set<std::string>& image_filenames() const {
 107     DCHECK(!folder_dir_.path().empty());
 108     return image_filenames_;
 109   }
 110
 111   const AlbumInfo& folder_info() const {
 112     DCHECK(!folder_dir_.path().empty());
 113     return folder_info_;
 114   }
 115
 116   const base::Time& timestamp() const {
 117     return timestamp_;
 118   }
 119
 120  private:
 121   const std::string name_;
 122   const base::Time timestamp_;
 123   const std::string uid_;
 124   unsigned int image_files_;
 125   unsigned int non_image_files_;
 126
 127   std::set<std::string> image_filenames_;
 128
 129   base::ScopedTempDir folder_dir_;
 130   AlbumInfo folder_info_;
 131 };
 132
 133 void ReadDirectoryTestHelperCallback(
 134     base::RunLoop* run_loop,
 135     FileSystemOperation::FileEntryList* contents,
 136     bool* completed, base::File::Error error,
 137     const FileSystemOperation::FileEntryList& file_list,
 138     bool has_more) {
 139   DCHECK(!*completed);
 140   *completed = !has_more && error == base::File::FILE_OK;
 141   *contents = file_list;
 142   run_loop->Quit();
 143 }
 144
 145 void ReadDirectoryTestHelper(storage::FileSystemOperationRunner* runner,
 146                              const FileSystemURL& url,
 147                              FileSystemOperation::FileEntryList* contents,
 148                              bool* completed) {
 149   DCHECK(contents);
 150   DCHECK(completed);
 151   base::RunLoop run_loop;
 152   runner->ReadDirectory(
 153       url, base::Bind(&ReadDirectoryTestHelperCallback, &run_loop, contents,
 154                       completed));
 155   run_loop.Run();
 156 }
 157
 158 void SynchronouslyRunOnMediaTaskRunner(const base::Closure& closure) {
 159   base::RunLoop loop;
 160   MediaFileSystemBackend::MediaTaskRunner()->PostTaskAndReply(
 161       FROM_HERE,
 162       closure,
 163       loop.QuitClosure());
 164   loop.Run();
 165 }
 166
 167 void CreateSnapshotFileTestHelperCallback(
 168     base::RunLoop* run_loop,
 169     base::File::Error* error,
 170     base::FilePath* platform_path_result,
 171     base::File::Error result,
 172     const base::File::Info& file_info,
 173     const base::FilePath& platform_path,
 174     const scoped_refptr<storage::ShareableFileReference>& file_ref) {
 175   DCHECK(run_loop);
 176   DCHECK(error);
 177   DCHECK(platform_path_result);
 178
 179   *error = result;
 180   *platform_path_result = platform_path;
 181   run_loop->Quit();
 182 }
 183
 184 }  // namespace
 185
 186 class TestPicasaFileUtil : public PicasaFileUtil {
 187  public:
 188   TestPicasaFileUtil(MediaPathFilter* media_path_filter,
 189                      PicasaDataProvider* data_provider)
 190       : PicasaFileUtil(media_path_filter),
 191         data_provider_(data_provider) {
 192   }
 193   ~TestPicasaFileUtil() override {}
 194
 195  private:
 196   PicasaDataProvider* GetDataProvider() override { return data_provider_; }
 197
 198   PicasaDataProvider* data_provider_;
 199 };
 200
 201 class TestMediaFileSystemBackend : public MediaFileSystemBackend {
 202  public:
 203   TestMediaFileSystemBackend(const base::FilePath& profile_path,
 204                              PicasaFileUtil* picasa_file_util)
 205       : MediaFileSystemBackend(profile_path,
 206                                MediaFileSystemBackend::MediaTaskRunner().get()),
 207         test_file_util_(picasa_file_util) {}
 208
 209   storage::AsyncFileUtil* GetAsyncFileUtil(
 210       storage::FileSystemType type) override {
 211     if (type != storage::kFileSystemTypePicasa)
 212       return NULL;
 213
 214     return test_file_util_.get();
 215   }
 216
 217  private:
 218   scoped_ptr<storage::AsyncFileUtil> test_file_util_;
 219 };
 220
 221 class PicasaFileUtilTest : public testing::Test {
 222  public:
 223   PicasaFileUtilTest()
 224       : io_thread_(content::BrowserThread::IO, &message_loop_) {
 225   }
 226
 227   void SetUp() override {
 228     ASSERT_TRUE(profile_dir_.CreateUniqueTempDir());
 229     ImportedMediaGalleryRegistry::GetInstance()->Initialize();
 230
 231     scoped_refptr<storage::SpecialStoragePolicy> storage_policy =
 232         new content::MockSpecialStoragePolicy();
 233
 234     SynchronouslyRunOnMediaTaskRunner(base::Bind(
 235         &PicasaFileUtilTest::SetUpOnMediaTaskRunner, base::Unretained(this)));
 236
 237     media_path_filter_.reset(new MediaPathFilter());
 238
 239     ScopedVector<storage::FileSystemBackend> additional_providers;
 240     additional_providers.push_back(new TestMediaFileSystemBackend(
 241         profile_dir_.path(),
 242         new TestPicasaFileUtil(media_path_filter_.get(),
 243                                picasa_data_provider_.get())));
 244
 245     file_system_context_ = new storage::FileSystemContext(
 246         base::MessageLoopProxy::current().get(),
 247         base::MessageLoopProxy::current().get(),
 248         storage::ExternalMountPoints::CreateRefCounted().get(),
 249         storage_policy.get(),
 250         NULL,
 251         additional_providers.Pass(),
 252         std::vector<storage::URLRequestAutoMountHandler>(),
 253         profile_dir_.path(),
 254         content::CreateAllowFileAccessOptions());
 255   }
 256
 257   void TearDown() override {
 258     SynchronouslyRunOnMediaTaskRunner(
 259         base::Bind(&PicasaFileUtilTest::TearDownOnMediaTaskRunner,
 260                    base::Unretained(this)));
 261   }
 262
 263  protected:
 264   void SetUpOnMediaTaskRunner() {
 265     picasa_data_provider_.reset(new PicasaDataProvider(base::FilePath()));
 266   }
 267
 268   void TearDownOnMediaTaskRunner() {
 269     picasa_data_provider_.reset();
 270   }
 271
 272   // |test_folders| must be in alphabetical order for easy verification
 273   void SetupFolders(ScopedVector<TestFolder>* test_folders,
 274                     const std::vector<AlbumInfo>& albums,
 275                     const AlbumImagesMap& albums_images) {
 276     std::vector<AlbumInfo> folders;
 277     for (ScopedVector<TestFolder>::iterator it = test_folders->begin();
 278         it != test_folders->end(); ++it) {
 279       TestFolder* test_folder = *it;
 280       ASSERT_TRUE(test_folder->Init());
 281       folders.push_back(test_folder->folder_info());
 282     }
 283
 284     PicasaDataProvider::UniquifyNames(albums,
 285                                       &picasa_data_provider_->album_map_);
 286     PicasaDataProvider::UniquifyNames(folders,
 287                                       &picasa_data_provider_->folder_map_);
 288     picasa_data_provider_->albums_images_ = albums_images;
 289     picasa_data_provider_->state_ =
 290         PicasaDataProvider::ALBUMS_IMAGES_FRESH_STATE;
 291   }
 292
 293   void VerifyFolderDirectoryList(const ScopedVector<TestFolder>& test_folders) {
 294     FileSystemOperation::FileEntryList contents;
 295     FileSystemURL url = CreateURL(kPicasaDirFolders);
 296     bool completed = false;
 297     ReadDirectoryTestHelper(operation_runner(), url, &contents, &completed);
 298
 299     ASSERT_TRUE(completed);
 300     ASSERT_EQ(test_folders.size(), contents.size());
 301
 302     for (size_t i = 0; i < contents.size(); ++i) {
 303       EXPECT_TRUE(contents[i].is_directory);
 304
 305       // Because the timestamp is written out as a floating point Microsoft
 306       // variant time, we only expect it to be accurate to within a second.
 307       base::TimeDelta delta = test_folders[i]->folder_info().timestamp -
 308                               contents[i].last_modified_time;
 309       EXPECT_LT(delta, base::TimeDelta::FromSeconds(1));
 310
 311       FileSystemOperation::FileEntryList folder_contents;
 312       FileSystemURL folder_url = CreateURL(
 313           std::string(kPicasaDirFolders) + "/" +
 314           base::FilePath(contents[i].name).AsUTF8Unsafe());
 315       bool folder_read_completed = false;
 316       ReadDirectoryTestHelper(operation_runner(), folder_url, &folder_contents,
 317                               &folder_read_completed);
 318
 319       EXPECT_TRUE(folder_read_completed);
 320
 321       const std::set<std::string>& image_filenames =
 322           test_folders[i]->image_filenames();
 323
 324       EXPECT_EQ(image_filenames.size(), folder_contents.size());
 325
 326       for (FileSystemOperation::FileEntryList::const_iterator file_it =
 327                folder_contents.begin(); file_it != folder_contents.end();
 328            ++file_it) {
 329         EXPECT_EQ(1u, image_filenames.count(
 330             base::FilePath(file_it->name).AsUTF8Unsafe()));
 331       }
 332     }
 333   }
 334
 335   std::string DateToPathString(const base::Time& time) {
 336     return PicasaDataProvider::DateToPathString(time);
 337   }
 338
 339   void TestNonexistentDirectory(const std::string& path) {
 340     FileSystemOperation::FileEntryList contents;
 341     FileSystemURL url = CreateURL(path);
 342     bool completed = false;
 343     ReadDirectoryTestHelper(operation_runner(), url, &contents, &completed);
 344
 345     ASSERT_FALSE(completed);
 346   }
 347
 348   void TestEmptyDirectory(const std::string& path) {
 349     FileSystemOperation::FileEntryList contents;
 350     FileSystemURL url = CreateURL(path);
 351     bool completed = false;
 352     ReadDirectoryTestHelper(operation_runner(), url, &contents, &completed);
 353
 354     ASSERT_TRUE(completed);
 355     EXPECT_EQ(0u, contents.size());
 356   }
 357
 358   FileSystemURL CreateURL(const std::string& path) const {
 359     base::FilePath virtual_path =
 360         ImportedMediaGalleryRegistry::GetInstance()->ImportedRoot();
 361     virtual_path = virtual_path.AppendASCII("picasa");
 362     virtual_path = virtual_path.AppendASCII(path);
 363     return file_system_context_->CreateCrackedFileSystemURL(
 364         GURL("http://www.example.com"),
 365         storage::kFileSystemTypePicasa,
 366         virtual_path);
 367   }
 368
 369   storage::FileSystemOperationRunner* operation_runner() const {
 370     return file_system_context_->operation_runner();
 371   }
 372
 373   scoped_refptr<storage::FileSystemContext> file_system_context() const {
 374     return file_system_context_;
 375   }
 376
 377  private:
 378   base::MessageLoop message_loop_;
 379   content::TestBrowserThread io_thread_;
 380
 381   base::ScopedTempDir profile_dir_;
 382
 383   scoped_refptr<storage::FileSystemContext> file_system_context_;
 384   scoped_ptr<PicasaDataProvider> picasa_data_provider_;
 385   scoped_ptr<MediaPathFilter> media_path_filter_;
 386
 387   DISALLOW_COPY_AND_ASSIGN(PicasaFileUtilTest);
 388 };
 389
 390 TEST_F(PicasaFileUtilTest, DateFormat) {
 391   base::Time::Exploded exploded_shortmonth = { 2013, 4, 0, 16, 0, 0, 0, 0 };
 392   base::Time shortmonth = base::Time::FromLocalExploded(exploded_shortmonth);
 393
 394   base::Time::Exploded exploded_shortday = { 2013, 11, 0, 3, 0, 0, 0, 0 };
 395   base::Time shortday = base::Time::FromLocalExploded(exploded_shortday);
 396
 397   EXPECT_EQ("2013-04-16", DateToPathString(shortmonth));
 398   EXPECT_EQ("2013-11-03", DateToPathString(shortday));
 399 }
 400
 401 TEST_F(PicasaFileUtilTest, NameDeduplication) {
 402   ScopedVector<TestFolder> test_folders;
 403   std::vector<std::string> expected_names;
 404
 405   base::Time test_date = base::Time::FromLocalExploded(test_date_exploded);
 406   base::Time test_date_2 = test_date - base::TimeDelta::FromDays(1);
 407
 408   std::string test_date_string = DateToPathString(test_date);
 409   std::string test_date_2_string = DateToPathString(test_date_2);
 410
 411   test_folders.push_back(
 412       new TestFolder("diff_date", test_date_2, "uuid3", 0, 0));
 413   expected_names.push_back("diff_date " + test_date_2_string);
 414
 415   test_folders.push_back(
 416       new TestFolder("diff_date", test_date, "uuid2", 0, 0));
 417   expected_names.push_back("diff_date " + test_date_string);
 418
 419   test_folders.push_back(
 420       new TestFolder("duplicate", test_date, "uuid4", 0, 0));
 421   expected_names.push_back("duplicate " + test_date_string + " (1)");
 422
 423   test_folders.push_back(
 424       new TestFolder("duplicate", test_date, "uuid5", 0, 0));
 425   expected_names.push_back("duplicate " + test_date_string + " (2)");
 426
 427   test_folders.push_back(
 428       new TestFolder("unique_name", test_date, "uuid1", 0, 0));
 429   expected_names.push_back("unique_name " + test_date_string);
 430
 431   SetupFolders(&test_folders, std::vector<AlbumInfo>(), AlbumImagesMap());
 432
 433   FileSystemOperation::FileEntryList contents;
 434   FileSystemURL url = CreateURL(kPicasaDirFolders);
 435   bool completed = false;
 436   ReadDirectoryTestHelper(operation_runner(), url, &contents, &completed);
 437
 438   ASSERT_TRUE(completed);
 439   ASSERT_EQ(expected_names.size(), contents.size());
 440   for (size_t i = 0; i < contents.size(); ++i) {
 441     EXPECT_EQ(expected_names[i],
 442               base::FilePath(contents[i].name).AsUTF8Unsafe());
 443     EXPECT_EQ(test_folders[i]->timestamp(), contents[i].last_modified_time);
 444     EXPECT_TRUE(contents[i].is_directory);
 445   }
 446 }
 447
 448 TEST_F(PicasaFileUtilTest, RootFolders) {
 449   ScopedVector<TestFolder> empty_folders_list;
 450   SetupFolders(&empty_folders_list, std::vector<AlbumInfo>(), AlbumImagesMap());
 451
 452   FileSystemOperation::FileEntryList contents;
 453   FileSystemURL url = CreateURL("");
 454   bool completed = false;
 455   ReadDirectoryTestHelper(operation_runner(), url, &contents, &completed);
 456
 457   ASSERT_TRUE(completed);
 458   ASSERT_EQ(2u, contents.size());
 459
 460   EXPECT_TRUE(contents.front().is_directory);
 461   EXPECT_TRUE(contents.back().is_directory);
 462
 463   EXPECT_EQ(0, contents.front().size);
 464   EXPECT_EQ(0, contents.back().size);
 465
 466   EXPECT_EQ(FILE_PATH_LITERAL("albums"), contents.front().name);
 467   EXPECT_EQ(FILE_PATH_LITERAL("folders"), contents.back().name);
 468 }
 469
 470 TEST_F(PicasaFileUtilTest, NonexistentFolder) {
 471   ScopedVector<TestFolder> empty_folders_list;
 472   SetupFolders(&empty_folders_list, std::vector<AlbumInfo>(), AlbumImagesMap());
 473
 474   TestNonexistentDirectory(std::string(kPicasaDirFolders) + "/foo");
 475   TestNonexistentDirectory(std::string(kPicasaDirFolders) + "/foo/bar");
 476   TestNonexistentDirectory(std::string(kPicasaDirFolders) + "/foo/bar/baz");
 477 }
 478
 479 TEST_F(PicasaFileUtilTest, FolderContentsTrivial) {
 480   ScopedVector<TestFolder> test_folders;
 481   base::Time test_date = base::Time::FromLocalExploded(test_date_exploded);
 482
 483   test_folders.push_back(
 484       new TestFolder("folder-1-empty", test_date, "uid-empty", 0, 0));
 485   test_folders.push_back(
 486       new TestFolder("folder-2-images", test_date, "uid-images", 5, 0));
 487   test_folders.push_back(
 488       new TestFolder("folder-3-nonimages", test_date, "uid-nonimages", 0, 5));
 489   test_folders.push_back(
 490       new TestFolder("folder-4-both", test_date, "uid-both", 5, 5));
 491
 492   SetupFolders(&test_folders, std::vector<AlbumInfo>(), AlbumImagesMap());
 493   VerifyFolderDirectoryList(test_folders);
 494 }
 495
 496 TEST_F(PicasaFileUtilTest, FolderWithManyFiles) {
 497   ScopedVector<TestFolder> test_folders;
 498   base::Time test_date = base::Time::FromLocalExploded(test_date_exploded);
 499
 500   test_folders.push_back(
 501       new TestFolder("folder-many-files", test_date, "uid-both", 50, 50));
 502
 503   SetupFolders(&test_folders, std::vector<AlbumInfo>(), AlbumImagesMap());
 504   VerifyFolderDirectoryList(test_folders);
 505 }
 506
 507 TEST_F(PicasaFileUtilTest, ManyFolders) {
 508   ScopedVector<TestFolder> test_folders;
 509   base::Time test_date = base::Time::FromLocalExploded(test_date_exploded);
 510
 511   for (unsigned int i = 0; i < 50; ++i) {
 512     base::Time date = test_date - base::TimeDelta::FromDays(i);
 513
 514     test_folders.push_back(
 515         new TestFolder(base::StringPrintf("folder-%05d", i),
 516                        date,
 517                        base::StringPrintf("uid%05d", i), i % 5, i % 3));
 518   }
 519
 520   SetupFolders(&test_folders, std::vector<AlbumInfo>(), AlbumImagesMap());
 521   VerifyFolderDirectoryList(test_folders);
 522 }
 523
 524 TEST_F(PicasaFileUtilTest, AlbumExistence) {
 525   ScopedVector<TestFolder> test_folders;
 526   base::Time test_date = base::Time::FromLocalExploded(test_date_exploded);
 527
 528   std::vector<AlbumInfo> albums;
 529   AlbumInfo info;
 530   info.name = "albumname";
 531   info.uid = "albumuid";
 532   info.timestamp = test_date;
 533   albums.push_back(info);
 534
 535   AlbumImagesMap albums_images;
 536   albums_images[info.uid] = AlbumImages();
 537
 538   SetupFolders(&test_folders, albums, albums_images);
 539
 540   TestEmptyDirectory(std::string(kPicasaDirAlbums) + "/albumname 2013-04-16");
 541   TestNonexistentDirectory(std::string(kPicasaDirAlbums) +
 542                            "/albumname 2013-04-16/toodeep");
 543   TestNonexistentDirectory(std::string(kPicasaDirAlbums) + "/wrongname");
 544 }
 545
 546 TEST_F(PicasaFileUtilTest, AlbumContents) {
 547   ScopedVector<TestFolder> test_folders;
 548   base::Time test_date = base::Time::FromLocalExploded(test_date_exploded);
 549
 550   std::vector<AlbumInfo> albums;
 551   AlbumInfo info;
 552   info.name = "albumname";
 553   info.uid = "albumuid";
 554   info.timestamp = test_date;
 555   albums.push_back(info);
 556
 557   base::ScopedTempDir temp_dir;
 558   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
 559
 560   base::FilePath image_path = temp_dir.path().AppendASCII("img.jpg");
 561   ASSERT_TRUE(WriteJPEGHeader(image_path));
 562
 563   AlbumImagesMap albums_images;
 564   albums_images[info.uid] = AlbumImages();
 565   albums_images[info.uid]["mapped_name.jpg"] = image_path;
 566
 567   SetupFolders(&test_folders, albums, albums_images);
 568
 569   FileSystemOperation::FileEntryList contents;
 570   FileSystemURL url =
 571       CreateURL(std::string(kPicasaDirAlbums) + "/albumname 2013-04-16");
 572   bool completed = false;
 573   ReadDirectoryTestHelper(operation_runner(), url, &contents, &completed);
 574
 575   ASSERT_TRUE(completed);
 576   EXPECT_EQ(1u, contents.size());
 577   EXPECT_EQ("mapped_name.jpg",
 578             base::FilePath(contents.begin()->name).AsUTF8Unsafe());
 579   EXPECT_FALSE(contents.begin()->is_directory);
 580
 581   // Create a snapshot file to verify the file path.
 582   base::RunLoop loop;
 583   base::File::Error error;
 584   base::FilePath platform_path_result;
 585   storage::FileSystemOperationRunner::SnapshotFileCallback snapshot_callback =
 586       base::Bind(&CreateSnapshotFileTestHelperCallback,
 587                  &loop,
 588                  &error,
 589                  &platform_path_result);
 590   operation_runner()->CreateSnapshotFile(
 591       CreateURL(std::string(kPicasaDirAlbums) +
 592                 "/albumname 2013-04-16/mapped_name.jpg"),
 593       snapshot_callback);
 594   loop.Run();
 595   EXPECT_EQ(base::File::FILE_OK, error);
 596   EXPECT_EQ(image_path, platform_path_result);
 597 }
 598
 599 }  // namespace picasa