chrome/browser/media_galleries/fileapi/native_media_file_util_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 <set>
   6 #include <string>
   7
   8 #include "base/bind.h"
   9 #include "base/file_util.h"
  10 #include "base/files/scoped_temp_dir.h"
  11 #include "base/format_macros.h"
  12 #include "base/message_loop/message_loop.h"
  13 #include "base/message_loop/message_loop_proxy.h"
  14 #include "base/strings/stringprintf.h"
  15 #include "base/time/time.h"
  16 #include "chrome/browser/media_galleries/fileapi/media_file_system_backend.h"
  17 #include "chrome/browser/media_galleries/fileapi/native_media_file_util.h"
  18 #include "content/public/test/test_browser_thread.h"
  19 #include "content/public/test/test_file_system_options.h"
  20 #include "testing/gtest/include/gtest/gtest.h"
  21 #include "webkit/browser/fileapi/external_mount_points.h"
  22 #include "webkit/browser/fileapi/file_system_backend.h"
  23 #include "webkit/browser/fileapi/file_system_context.h"
  24 #include "webkit/browser/fileapi/file_system_operation_runner.h"
  25 #include "webkit/browser/fileapi/file_system_url.h"
  26 #include "webkit/browser/fileapi/isolated_context.h"
  27 #include "webkit/browser/fileapi/native_file_util.h"
  28 #include "webkit/browser/quota/mock_special_storage_policy.h"
  29
  30 #define FPL(x) FILE_PATH_LITERAL(x)
  31
  32 using fileapi::FileSystemOperation;
  33 using fileapi::FileSystemURL;
  34
  35 namespace {
  36
  37 typedef FileSystemOperation::FileEntryList FileEntryList;
  38
  39 struct FilteringTestCase {
  40   const base::FilePath::CharType* path;
  41   bool is_directory;
  42   bool visible;
  43   bool media_file;
  44   const char* content;
  45 };
  46
  47 const FilteringTestCase kFilteringTestCases[] = {
  48   // Directory should always be visible.
  49   { FPL("hoge"), true, true, false, NULL },
  50   { FPL("fuga.jpg"), true, true, false, NULL },
  51   { FPL("piyo.txt"), true, true, false, NULL },
  52   { FPL("moga.cod"), true, true, false, NULL },
  53
  54   // File should be visible if it's a supported media file.
  55   // File without extension.
  56   { FPL("foo"), false, false, false, "abc" },
  57   // Supported media file.
  58   { FPL("bar.jpg"), false, true, true, "\xFF\xD8\xFF" },
  59   // Unsupported masquerading file.
  60   { FPL("sna.jpg"), false, true, false, "abc" },
  61   // Non-media file.
  62   { FPL("baz.txt"), false, false, false, "abc" },
  63   // Unsupported media file.
  64   { FPL("foobar.cod"), false, false, false, "abc" },
  65 };
  66
  67 void ExpectEqHelper(const std::string& test_name,
  68                     base::File::Error expected,
  69                     base::File::Error actual) {
  70   EXPECT_EQ(expected, actual) << test_name;
  71 }
  72
  73 void ExpectMetadataEqHelper(const std::string& test_name,
  74                             base::File::Error expected,
  75                             bool expected_is_directory,
  76                             base::File::Error actual,
  77                             const base::File::Info& file_info) {
  78   EXPECT_EQ(expected, actual) << test_name;
  79   if (actual == base::File::FILE_OK)
  80     EXPECT_EQ(expected_is_directory, file_info.is_directory) << test_name;
  81 }
  82
  83 void DidReadDirectory(std::set<base::FilePath::StringType>* content,
  84                       bool* completed,
  85                       base::File::Error error,
  86                       const FileEntryList& file_list,
  87                       bool has_more) {
  88   EXPECT_TRUE(!*completed);
  89   *completed = !has_more;
  90   for (FileEntryList::const_iterator itr = file_list.begin();
  91        itr != file_list.end(); ++itr)
  92     EXPECT_TRUE(content->insert(itr->name).second);
  93 }
  94
  95 void PopulateDirectoryWithTestCases(const base::FilePath& dir,
  96                                     const FilteringTestCase* test_cases,
  97                                     size_t n) {
  98   for (size_t i = 0; i < n; ++i) {
  99     base::FilePath path = dir.Append(test_cases[i].path);
 100     if (test_cases[i].is_directory) {
 101       ASSERT_TRUE(base::CreateDirectory(path));
 102     } else {
 103       ASSERT_TRUE(test_cases[i].content != NULL);
 104       int len = strlen(test_cases[i].content);
 105       ASSERT_EQ(len, file_util::WriteFile(path, test_cases[i].content, len));
 106     }
 107   }
 108 }
 109
 110 }  // namespace
 111
 112 class NativeMediaFileUtilTest : public testing::Test {
 113  public:
 114   NativeMediaFileUtilTest()
 115       : io_thread_(content::BrowserThread::IO, &message_loop_) {
 116   }
 117
 118   virtual void SetUp() {
 119     ASSERT_TRUE(data_dir_.CreateUniqueTempDir());
 120     ASSERT_TRUE(base::CreateDirectory(root_path()));
 121
 122     scoped_refptr<quota::SpecialStoragePolicy> storage_policy =
 123         new quota::MockSpecialStoragePolicy();
 124
 125     ScopedVector<fileapi::FileSystemBackend> additional_providers;
 126     additional_providers.push_back(new MediaFileSystemBackend(
 127         data_dir_.path(), base::MessageLoopProxy::current().get()));
 128
 129     file_system_context_ = new fileapi::FileSystemContext(
 130         base::MessageLoopProxy::current().get(),
 131         base::MessageLoopProxy::current().get(),
 132         fileapi::ExternalMountPoints::CreateRefCounted().get(),
 133         storage_policy.get(),
 134         NULL,
 135         additional_providers.Pass(),
 136         data_dir_.path(),
 137         content::CreateAllowFileAccessOptions());
 138
 139     filesystem_id_ = isolated_context()->RegisterFileSystemForPath(
 140         fileapi::kFileSystemTypeNativeMedia, root_path(), NULL);
 141
 142     isolated_context()->AddReference(filesystem_id_);
 143   }
 144
 145   virtual void TearDown() {
 146     isolated_context()->RemoveReference(filesystem_id_);
 147     file_system_context_ = NULL;
 148   }
 149
 150  protected:
 151   fileapi::FileSystemContext* file_system_context() {
 152     return file_system_context_.get();
 153   }
 154
 155   FileSystemURL CreateURL(const base::FilePath::CharType* test_case_path) {
 156     return file_system_context_->CreateCrackedFileSystemURL(
 157         origin(),
 158         fileapi::kFileSystemTypeIsolated,
 159         GetVirtualPath(test_case_path));
 160   }
 161
 162   fileapi::IsolatedContext* isolated_context() {
 163     return fileapi::IsolatedContext::GetInstance();
 164   }
 165
 166   base::FilePath root_path() {
 167     return data_dir_.path().Append(FPL("Media Directory"));
 168   }
 169
 170   base::FilePath GetVirtualPath(
 171       const base::FilePath::CharType* test_case_path) {
 172     return base::FilePath::FromUTF8Unsafe(filesystem_id_).
 173                Append(FPL("Media Directory")).
 174                Append(base::FilePath(test_case_path));
 175   }
 176
 177   GURL origin() {
 178     return GURL("http://example.com");
 179   }
 180
 181   fileapi::FileSystemType type() {
 182     return fileapi::kFileSystemTypeNativeMedia;
 183   }
 184
 185   fileapi::FileSystemOperationRunner* operation_runner() {
 186     return file_system_context_->operation_runner();
 187   }
 188
 189  private:
 190   base::MessageLoop message_loop_;
 191   content::TestBrowserThread io_thread_;
 192
 193   base::ScopedTempDir data_dir_;
 194   scoped_refptr<fileapi::FileSystemContext> file_system_context_;
 195
 196   std::string filesystem_id_;
 197
 198   DISALLOW_COPY_AND_ASSIGN(NativeMediaFileUtilTest);
 199 };
 200
 201 TEST_F(NativeMediaFileUtilTest, DirectoryExistsAndFileExistsFiltering) {
 202   PopulateDirectoryWithTestCases(root_path(),
 203                                  kFilteringTestCases,
 204                                  arraysize(kFilteringTestCases));
 205
 206   for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 207     FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 208
 209     base::File::Error expectation =
 210         kFilteringTestCases[i].visible ?
 211         base::File::FILE_OK :
 212         base::File::FILE_ERROR_NOT_FOUND;
 213
 214     std::string test_name =
 215         base::StringPrintf("DirectoryExistsAndFileExistsFiltering %" PRIuS, i);
 216     if (kFilteringTestCases[i].is_directory) {
 217       operation_runner()->DirectoryExists(
 218           url, base::Bind(&ExpectEqHelper, test_name, expectation));
 219     } else {
 220       operation_runner()->FileExists(
 221           url, base::Bind(&ExpectEqHelper, test_name, expectation));
 222     }
 223     base::MessageLoop::current()->RunUntilIdle();
 224   }
 225 }
 226
 227 TEST_F(NativeMediaFileUtilTest, ReadDirectoryFiltering) {
 228   PopulateDirectoryWithTestCases(root_path(),
 229                                  kFilteringTestCases,
 230                                  arraysize(kFilteringTestCases));
 231
 232   std::set<base::FilePath::StringType> content;
 233   FileSystemURL url = CreateURL(FPL(""));
 234   bool completed = false;
 235   operation_runner()->ReadDirectory(
 236       url, base::Bind(&DidReadDirectory, &content, &completed));
 237   base::MessageLoop::current()->RunUntilIdle();
 238   EXPECT_TRUE(completed);
 239   EXPECT_EQ(6u, content.size());
 240
 241   for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 242     base::FilePath::StringType name =
 243         base::FilePath(kFilteringTestCases[i].path).BaseName().value();
 244     std::set<base::FilePath::StringType>::const_iterator found =
 245         content.find(name);
 246     EXPECT_EQ(kFilteringTestCases[i].visible, found != content.end());
 247   }
 248 }
 249
 250 TEST_F(NativeMediaFileUtilTest, CreateDirectoryFiltering) {
 251   // Run the loop twice. The second loop attempts to create directories that are
 252   // pre-existing. Though the result should be the same.
 253   for (int loop_count = 0; loop_count < 2; ++loop_count) {
 254     for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 255       if (kFilteringTestCases[i].is_directory) {
 256         FileSystemURL root_url = CreateURL(FPL(""));
 257         FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 258
 259         std::string test_name = base::StringPrintf(
 260             "CreateFileAndCreateDirectoryFiltering run %d, test %" PRIuS,
 261             loop_count, i);
 262         base::File::Error expectation =
 263             kFilteringTestCases[i].visible ?
 264             base::File::FILE_OK :
 265             base::File::FILE_ERROR_SECURITY;
 266         operation_runner()->CreateDirectory(
 267             url, false, false,
 268             base::Bind(&ExpectEqHelper, test_name, expectation));
 269       }
 270       base::MessageLoop::current()->RunUntilIdle();
 271     }
 272   }
 273 }
 274
 275 TEST_F(NativeMediaFileUtilTest, CopySourceFiltering) {
 276   base::FilePath dest_path = root_path().AppendASCII("dest");
 277   FileSystemURL dest_url = CreateURL(FPL("dest"));
 278
 279   // Run the loop twice. The first run has no source files. The second run does.
 280   for (int loop_count = 0; loop_count < 2; ++loop_count) {
 281     if (loop_count == 1) {
 282       PopulateDirectoryWithTestCases(root_path(),
 283                                      kFilteringTestCases,
 284                                      arraysize(kFilteringTestCases));
 285     }
 286     for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 287       // Always start with an empty destination directory.
 288       // Copying to a non-empty destination directory is an invalid operation.
 289       ASSERT_TRUE(base::DeleteFile(dest_path, true));
 290       ASSERT_TRUE(base::CreateDirectory(dest_path));
 291
 292       FileSystemURL root_url = CreateURL(FPL(""));
 293       FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 294
 295       std::string test_name = base::StringPrintf(
 296           "CopySourceFiltering run %d test %" PRIuS, loop_count, i);
 297       base::File::Error expectation = base::File::FILE_OK;
 298       if (loop_count == 0 || !kFilteringTestCases[i].visible) {
 299         // If the source does not exist or is not visible.
 300         expectation = base::File::FILE_ERROR_NOT_FOUND;
 301       } else if (!kFilteringTestCases[i].is_directory) {
 302         // Cannot copy a visible file to a directory.
 303         expectation = base::File::FILE_ERROR_INVALID_OPERATION;
 304       }
 305       operation_runner()->Copy(
 306           url, dest_url,
 307           fileapi::FileSystemOperation::OPTION_NONE,
 308           fileapi::FileSystemOperationRunner::CopyProgressCallback(),
 309           base::Bind(&ExpectEqHelper, test_name, expectation));
 310       base::MessageLoop::current()->RunUntilIdle();
 311     }
 312   }
 313 }
 314
 315 TEST_F(NativeMediaFileUtilTest, CopyDestFiltering) {
 316   // Run the loop twice. The first run has no destination files.
 317   // The second run does.
 318   for (int loop_count = 0; loop_count < 2; ++loop_count) {
 319     if (loop_count == 1) {
 320       // Reset the test directory between the two loops to remove old
 321       // directories and create new ones that should pre-exist.
 322       ASSERT_TRUE(base::DeleteFile(root_path(), true));
 323       ASSERT_TRUE(base::CreateDirectory(root_path()));
 324       PopulateDirectoryWithTestCases(root_path(),
 325                                      kFilteringTestCases,
 326                                      arraysize(kFilteringTestCases));
 327     }
 328
 329     // Always create a dummy source data file.
 330     base::FilePath src_path = root_path().AppendASCII("foo.jpg");
 331     FileSystemURL src_url = CreateURL(FPL("foo.jpg"));
 332     static const char kDummyData[] = "dummy";
 333     ASSERT_TRUE(file_util::WriteFile(src_path, kDummyData, strlen(kDummyData)));
 334
 335     for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 336       if (loop_count == 0 && kFilteringTestCases[i].is_directory) {
 337         // These directories do not exist in this case, so Copy() will not
 338         // treat them as directories. Thus invalidating these test cases.
 339         continue;
 340       }
 341       FileSystemURL root_url = CreateURL(FPL(""));
 342       FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 343
 344       std::string test_name = base::StringPrintf(
 345           "CopyDestFiltering run %d test %" PRIuS, loop_count, i);
 346       base::File::Error expectation;
 347       if (loop_count == 0) {
 348         // The destination path is a file here. The directory case has been
 349         // handled above.
 350         // If the destination path does not exist and is not visible, then
 351         // creating it would be a security violation.
 352         expectation =
 353             kFilteringTestCases[i].visible ?
 354             base::File::FILE_OK :
 355             base::File::FILE_ERROR_SECURITY;
 356       } else {
 357         if (!kFilteringTestCases[i].visible) {
 358           // If the destination path exist and is not visible, then to the copy
 359           // operation, it looks like the file needs to be created, which is a
 360           // security violation.
 361           expectation = base::File::FILE_ERROR_SECURITY;
 362         } else if (kFilteringTestCases[i].is_directory) {
 363           // Cannot copy a file to a directory.
 364           expectation = base::File::FILE_ERROR_INVALID_OPERATION;
 365         } else {
 366           // Copying from a file to a visible file that exists is ok.
 367           expectation = base::File::FILE_OK;
 368         }
 369       }
 370       operation_runner()->Copy(
 371           src_url, url,
 372           fileapi::FileSystemOperation::OPTION_NONE,
 373           fileapi::FileSystemOperationRunner::CopyProgressCallback(),
 374           base::Bind(&ExpectEqHelper, test_name, expectation));
 375       base::MessageLoop::current()->RunUntilIdle();
 376     }
 377   }
 378 }
 379
 380 TEST_F(NativeMediaFileUtilTest, MoveSourceFiltering) {
 381   base::FilePath dest_path = root_path().AppendASCII("dest");
 382   FileSystemURL dest_url = CreateURL(FPL("dest"));
 383
 384   // Run the loop twice. The first run has no source files. The second run does.
 385   for (int loop_count = 0; loop_count < 2; ++loop_count) {
 386     if (loop_count == 1) {
 387       PopulateDirectoryWithTestCases(root_path(),
 388                                      kFilteringTestCases,
 389                                      arraysize(kFilteringTestCases));
 390     }
 391     for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 392       // Always start with an empty destination directory.
 393       // Moving to a non-empty destination directory is an invalid operation.
 394       ASSERT_TRUE(base::DeleteFile(dest_path, true));
 395       ASSERT_TRUE(base::CreateDirectory(dest_path));
 396
 397       FileSystemURL root_url = CreateURL(FPL(""));
 398       FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 399
 400       std::string test_name = base::StringPrintf(
 401           "MoveSourceFiltering run %d test %" PRIuS, loop_count, i);
 402       base::File::Error expectation = base::File::FILE_OK;
 403       if (loop_count == 0 || !kFilteringTestCases[i].visible) {
 404         // If the source does not exist or is not visible.
 405         expectation = base::File::FILE_ERROR_NOT_FOUND;
 406       } else if (!kFilteringTestCases[i].is_directory) {
 407         // Cannot move a visible file to a directory.
 408         expectation = base::File::FILE_ERROR_INVALID_OPERATION;
 409       }
 410       operation_runner()->Move(
 411           url, dest_url, fileapi::FileSystemOperation::OPTION_NONE,
 412           base::Bind(&ExpectEqHelper, test_name, expectation));
 413       base::MessageLoop::current()->RunUntilIdle();
 414     }
 415   }
 416 }
 417
 418 TEST_F(NativeMediaFileUtilTest, MoveDestFiltering) {
 419   // Run the loop twice. The first run has no destination files.
 420   // The second run does.
 421   for (int loop_count = 0; loop_count < 2; ++loop_count) {
 422     if (loop_count == 1) {
 423       // Reset the test directory between the two loops to remove old
 424       // directories and create new ones that should pre-exist.
 425       ASSERT_TRUE(base::DeleteFile(root_path(), true));
 426       ASSERT_TRUE(base::CreateDirectory(root_path()));
 427       PopulateDirectoryWithTestCases(root_path(),
 428                                      kFilteringTestCases,
 429                                      arraysize(kFilteringTestCases));
 430     }
 431
 432     for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 433       if (loop_count == 0 && kFilteringTestCases[i].is_directory) {
 434         // These directories do not exist in this case, so Copy() will not
 435         // treat them as directories. Thus invalidating these test cases.
 436         continue;
 437       }
 438
 439       // Create the source file for every test case because it might get moved.
 440       base::FilePath src_path = root_path().AppendASCII("foo.jpg");
 441       FileSystemURL src_url = CreateURL(FPL("foo.jpg"));
 442       static const char kDummyData[] = "dummy";
 443       ASSERT_TRUE(
 444           file_util::WriteFile(src_path, kDummyData, strlen(kDummyData)));
 445
 446       FileSystemURL root_url = CreateURL(FPL(""));
 447       FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 448
 449       std::string test_name = base::StringPrintf(
 450           "MoveDestFiltering run %d test %" PRIuS, loop_count, i);
 451       base::File::Error expectation;
 452       if (loop_count == 0) {
 453         // The destination path is a file here. The directory case has been
 454         // handled above.
 455         // If the destination path does not exist and is not visible, then
 456         // creating it would be a security violation.
 457         expectation =
 458             kFilteringTestCases[i].visible ?
 459             base::File::FILE_OK :
 460             base::File::FILE_ERROR_SECURITY;
 461       } else {
 462         if (!kFilteringTestCases[i].visible) {
 463           // If the destination path exist and is not visible, then to the move
 464           // operation, it looks like the file needs to be created, which is a
 465           // security violation.
 466           expectation = base::File::FILE_ERROR_SECURITY;
 467         } else if (kFilteringTestCases[i].is_directory) {
 468           // Cannot move a file to a directory.
 469           expectation = base::File::FILE_ERROR_INVALID_OPERATION;
 470         } else {
 471           // Moving from a file to a visible file that exists is ok.
 472           expectation = base::File::FILE_OK;
 473         }
 474       }
 475       operation_runner()->Move(
 476           src_url, url, fileapi::FileSystemOperation::OPTION_NONE,
 477           base::Bind(&ExpectEqHelper, test_name, expectation));
 478       base::MessageLoop::current()->RunUntilIdle();
 479     }
 480   }
 481 }
 482
 483 TEST_F(NativeMediaFileUtilTest, GetMetadataFiltering) {
 484   // Run the loop twice. The first run has no files. The second run does.
 485   for (int loop_count = 0; loop_count < 2; ++loop_count) {
 486     if (loop_count == 1) {
 487       PopulateDirectoryWithTestCases(root_path(),
 488                                      kFilteringTestCases,
 489                                      arraysize(kFilteringTestCases));
 490     }
 491     for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 492       FileSystemURL root_url = CreateURL(FPL(""));
 493       FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 494
 495       std::string test_name = base::StringPrintf(
 496           "GetMetadataFiltering run %d test %" PRIuS, loop_count, i);
 497       base::File::Error expectation = base::File::FILE_OK;
 498       if (loop_count == 0 || !kFilteringTestCases[i].visible) {
 499         // Cannot get metadata from files that do not exist or are not visible.
 500         expectation = base::File::FILE_ERROR_NOT_FOUND;
 501       }
 502       operation_runner()->GetMetadata(
 503           url,
 504           base::Bind(&ExpectMetadataEqHelper,
 505                      test_name,
 506                      expectation,
 507                      kFilteringTestCases[i].is_directory));
 508       base::MessageLoop::current()->RunUntilIdle();
 509     }
 510   }
 511 }
 512
 513 TEST_F(NativeMediaFileUtilTest, RemoveFileFiltering) {
 514   // Run the loop twice. The first run has no files. The second run does.
 515   for (int loop_count = 0; loop_count < 2; ++loop_count) {
 516     if (loop_count == 1) {
 517       PopulateDirectoryWithTestCases(root_path(),
 518                                      kFilteringTestCases,
 519                                      arraysize(kFilteringTestCases));
 520     }
 521     for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 522       FileSystemURL root_url = CreateURL(FPL(""));
 523       FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 524
 525       std::string test_name = base::StringPrintf(
 526           "RemoveFiltering run %d test %" PRIuS, loop_count, i);
 527       base::File::Error expectation = base::File::FILE_OK;
 528       if (loop_count == 0 || !kFilteringTestCases[i].visible) {
 529         // Cannot remove files that do not exist or are not visible.
 530         expectation = base::File::FILE_ERROR_NOT_FOUND;
 531       } else if (kFilteringTestCases[i].is_directory) {
 532         expectation = base::File::FILE_ERROR_NOT_A_FILE;
 533       }
 534       operation_runner()->RemoveFile(
 535           url, base::Bind(&ExpectEqHelper, test_name, expectation));
 536       base::MessageLoop::current()->RunUntilIdle();
 537     }
 538   }
 539 }
 540
 541 void CreateSnapshotCallback(
 542     base::File::Error* error,
 543     base::File::Error result,
 544     const base::File::Info&,
 545     const base::FilePath&,
 546     const scoped_refptr<webkit_blob::ShareableFileReference>&) {
 547   *error = result;
 548 }
 549
 550 TEST_F(NativeMediaFileUtilTest, CreateSnapshot) {
 551   PopulateDirectoryWithTestCases(root_path(),
 552                                  kFilteringTestCases,
 553                                  arraysize(kFilteringTestCases));
 554   for (size_t i = 0; i < arraysize(kFilteringTestCases); ++i) {
 555     if (kFilteringTestCases[i].is_directory ||
 556         !kFilteringTestCases[i].visible) {
 557       continue;
 558     }
 559     FileSystemURL root_url = CreateURL(FPL(""));
 560     FileSystemURL url = CreateURL(kFilteringTestCases[i].path);
 561     base::File::Error expected_error, error;
 562     if (kFilteringTestCases[i].media_file)
 563       expected_error = base::File::FILE_OK;
 564     else
 565       expected_error = base::File::FILE_ERROR_SECURITY;
 566     error = base::File::FILE_ERROR_FAILED;
 567     operation_runner()->CreateSnapshotFile(url,
 568         base::Bind(CreateSnapshotCallback, &error));
 569     base::MessageLoop::current()->RunUntilIdle();
 570     ASSERT_EQ(expected_error, error);
 571   }
 572 }