Add database recovery for FileSystemDirectoryDatabase.

webkit/fileapi/file_system_origin_database_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 <algorithm>
 #include <functional>
 #include <limits>
 #include <string>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/platform_file.h"
 #include "base/scoped_temp_dir.h"
 #include "base/stl_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/leveldatabase/src/db/filename.h"
 #include "third_party/leveldatabase/src/include/leveldb/db.h"
+#include "webkit/fileapi/file_system_database_test_helper.h"
 #include "webkit/fileapi/file_system_origin_database.h"
 #include "webkit/fileapi/file_system_util.h"
 
 namespace fileapi {
 
 namespace {
-
 const FilePath::CharType kFileSystemDirName[] =
     FILE_PATH_LITERAL("File System");
 const FilePath::CharType kOriginDatabaseName[] = FILE_PATH_LITERAL("Origins");
-
-void CorruptDatabase(const FilePath& db_path,
-                     leveldb::FileType type,
-                     ptrdiff_t offset,
-                     size_t size) {
-  file_util::FileEnumerator file_enum(
-      db_path, false /* recursive */,
-      static_cast<file_util::FileEnumerator::FileType>(
-          file_util::FileEnumerator::DIRECTORIES |
-          file_util::FileEnumerator::FILES));
-  FilePath file_path;
-  FilePath picked_file_path;
-  uint64 picked_file_number = kuint64max;
-
-  while (!(file_path = file_enum.Next()).empty()) {
-    uint64 number = kuint64max;
-    leveldb::FileType file_type;
-    EXPECT_TRUE(leveldb::ParseFileName(FilePathToString(file_path.BaseName()),
-                                       &number, &file_type));
-    if (file_type == type &&
-        (picked_file_number == kuint64max || picked_file_number < number)) {
-      picked_file_path = file_path;
-      picked_file_number = number;
-    }
-  }
-
-  EXPECT_FALSE(picked_file_path.empty());
-  EXPECT_NE(kuint64max, picked_file_number);
-
-  bool created = true;
-  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
-  base::PlatformFile file =
-      CreatePlatformFile(picked_file_path,
-                         base::PLATFORM_FILE_OPEN |
-                         base::PLATFORM_FILE_READ |
-                         base::PLATFORM_FILE_WRITE,
-                         &created, &error);
-  EXPECT_EQ(base::PLATFORM_FILE_OK, error);
-  EXPECT_FALSE(created);
-
-  base::PlatformFileInfo file_info;
-  EXPECT_TRUE(base::GetPlatformFileInfo(file, &file_info));
-  if (offset < 0)
-    offset += file_info.size;
-  EXPECT_GE(offset, 0);
-  EXPECT_LE(offset, file_info.size);
-
-  size = std::min(size, static_cast<size_t>(file_info.size - offset));
-
-  std::vector<char> buf(size);
-  int read_size = base::ReadPlatformFile(file, offset,
-                                         vector_as_array(&buf), buf.size());
-  EXPECT_LT(0, read_size);
-  EXPECT_GE(buf.size(), static_cast<size_t>(read_size));
-  buf.resize(read_size);
-
-  std::transform(buf.begin(), buf.end(), buf.begin(),
-                 std::logical_not<char>());
-
-  int written_size = base::WritePlatformFile(file, offset,
-                                             vector_as_array(&buf), buf.size());
-  EXPECT_GT(written_size, 0);
-  EXPECT_EQ(buf.size(), static_cast<size_t>(written_size));
-
-  base::ClosePlatformFile(file);
-}
-
 }  // namespace
 
 TEST(FileSystemOriginDatabaseTest, BasicTest) {
   ScopedTempDir dir;
   ASSERT_TRUE(dir.CreateUniqueTempDir());
   const FilePath kFSDir = dir.path().Append(kFileSystemDirName);
   EXPECT_FALSE(file_util::PathExists(kFSDir));
   EXPECT_TRUE(file_util::CreateDirectory(kFSDir));
 
   FileSystemOriginDatabase database(kFSDir);
@@ skipping 214 matching lines @@
   EXPECT_FALSE(database->HasOriginPath(kOrigin));
   EXPECT_TRUE(database->GetPathForOrigin(kOrigin, &path));
   EXPECT_FALSE(path.empty());
   EXPECT_TRUE(database->HasOriginPath(kOrigin));
 
   EXPECT_FALSE(file_util::PathExists(kGarbageFile));
   EXPECT_FALSE(file_util::PathExists(kGarbageDir));
 }
 
 }  // namespace fileapi