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// 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/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
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