| // 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 "webkit/fileapi/file_system_database_test_helper.h" |
| |
| #include <algorithm> |
| #include <functional> |
| #include <vector> |
| |
| #include "base/file_util.h" |
| #include "base/stl_util.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "webkit/fileapi/file_system_util.h" |
| |
| namespace fileapi { |
| |
| void CorruptDatabase(const FilePath& db_path, |
| leveldb::FileType type, |
| ptrdiff_t offset, |
| size_t size) { |
| file_util::FileEnumerator file_enum(db_path, false /* not recursive */, |
| 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 fileapi |