Move a subset of chrome/browser/chromeos/drive into components/drive

chrome/browser/chromeos/drive/local_file_reader_unittest.cc

-// Copyright 2013 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 "chrome/browser/chromeos/drive/local_file_reader.h"
-
-#include <string>
-
-#include "base/files/file_path.h"
-#include "base/files/scoped_temp_dir.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "base/rand_util.h"
-#include "base/threading/thread.h"
-#include "chrome/browser/chromeos/drive/drive_test_util.h"
-#include "google_apis/drive/test_util.h"
-#include "net/base/io_buffer.h"
-#include "net/base/test_completion_callback.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace drive {
-namespace util {
-namespace {
-
-// An adapter to use test_util::ReadAllData.
-class LocalFileReaderAdapter {
- public:
-  explicit LocalFileReaderAdapter(LocalFileReader* reader) : reader_(reader) {}
-  int Read(net::IOBuffer* buffer,
-           int buffer_length,
-           const net::CompletionCallback& callback) {
-    reader_->Read(buffer, buffer_length, callback);
-    // As LocalFileReader::Read always works asynchronously,
-    // return ERR_IO_PENDING.
-    return net::ERR_IO_PENDING;
-  }
-
- private:
-  LocalFileReader* reader_;
-};
-
-}  // namespace
-
-class LocalFileReaderTest : public ::testing::Test {
- protected:
-  void SetUp() override {
-    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-    worker_thread_.reset(new base::Thread("LocalFileReaderTest"));
-    ASSERT_TRUE(worker_thread_->Start());
-    file_reader_.reset(
-        new LocalFileReader(worker_thread_->task_runner().get()));
-  }
-
-  base::MessageLoop message_loop_;
-  base::ScopedTempDir temp_dir_;
-  scoped_ptr<base::Thread> worker_thread_;
-  scoped_ptr<LocalFileReader> file_reader_;
-};
-
-TEST_F(LocalFileReaderTest, NonExistingFile) {
-  const base::FilePath kTestFile =
-      temp_dir_.path().AppendASCII("non-existing");
-
-  net::TestCompletionCallback callback;
-  file_reader_->Open(kTestFile, 0, callback.callback());
-  EXPECT_EQ(net::ERR_FILE_NOT_FOUND, callback.WaitForResult());
-}
-
-TEST_F(LocalFileReaderTest, FullRead) {
-  base::FilePath test_file;
-  std::string expected_content;
-  ASSERT_TRUE(google_apis::test_util::CreateFileOfSpecifiedSize(
-      temp_dir_.path(), 1024, &test_file, &expected_content));
-
-  net::TestCompletionCallback callback;
-  file_reader_->Open(test_file, 0, callback.callback());
-  ASSERT_EQ(net::OK, callback.WaitForResult());
-
-  LocalFileReaderAdapter adapter(file_reader_.get());
-  std::string content;
-  ASSERT_EQ(net::OK, test_util::ReadAllData(&adapter, &content));
-  EXPECT_EQ(expected_content, content);
-}
-
-TEST_F(LocalFileReaderTest, OpenWithOffset) {
-  base::FilePath test_file;
-  std::string expected_content;
-  ASSERT_TRUE(google_apis::test_util::CreateFileOfSpecifiedSize(
-      temp_dir_.path(), 1024, &test_file, &expected_content));
-
-  size_t offset = expected_content.size() / 2;
-  expected_content.erase(0, offset);
-
-  net::TestCompletionCallback callback;
-  file_reader_->Open(
-      test_file, static_cast<int64>(offset), callback.callback());
-  ASSERT_EQ(net::OK, callback.WaitForResult());
-
-  LocalFileReaderAdapter adapter(file_reader_.get());
-  std::string content;
-  ASSERT_EQ(net::OK, test_util::ReadAllData(&adapter, &content));
-  EXPECT_EQ(expected_content, content);
-}
-
-}  // namespace util
-}  // namespace drive