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// Copyright (c) 2011 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 "base/file_util.h"
#include "base/memory/scoped_temp_dir.h"
#include "base/message_loop.h"
#include "base/string_number_conversions.h"
#include "chrome/browser/download/download_file.h"
#include "chrome/browser/download/download_manager.h"
#include "chrome/browser/download/download_status_updater.h"
#include "chrome/browser/download/download_util.h"
#include "chrome/browser/download/mock_download_manager.h"
#include "chrome/browser/history/download_create_info.h"
#include "content/browser/browser_thread.h"
#include "net/base/file_stream.h"
#include "testing/gtest/include/gtest/gtest.h"
class DownloadFileTest : public testing::Test {
public:
static const char* kTestData1;
static const char* kTestData2;
static const char* kTestData3;
static const char* kDataHash;
static const int32 kDummyDownloadId;
static const int kDummyChildId;
static const int kDummyRequestId;
// We need a UI |BrowserThread| in order to destruct |download_manager_|,
// which has trait |BrowserThread::DeleteOnUIThread|. Without this,
// calling Release() on |download_manager_| won't ever result in its
// destructor being called and we get a leak.
DownloadFileTest() :
ui_thread_(BrowserThread::UI, &loop_),
file_thread_(BrowserThread::FILE, &loop_) {
}
~DownloadFileTest() {
}
virtual void SetUp() {
ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
download_manager_ = new MockDownloadManager(&download_status_updater_);
}
virtual void TearDown() {
// When a DownloadManager's reference count drops to 0, it is not
// deleted immediately. Instead, a task is posted to the UI thread's
// message loop to delete it.
// So, drop the reference count to 0 and run the message loop once
// to ensure that all resources are cleaned up before the test exits.
download_manager_ = NULL;
ui_thread_.message_loop()->RunAllPending();
}
virtual void CreateDownloadFile(scoped_ptr<DownloadFile>* file, int offset) {
DownloadCreateInfo info;
info.download_id = kDummyDownloadId + offset;
info.child_id = kDummyChildId;
info.request_id = kDummyRequestId - offset;
info.save_info.file_stream = file_stream_;
file->reset(new DownloadFile(&info, download_manager_));
}
virtual void DestroyDownloadFile(scoped_ptr<DownloadFile>* file, int offset) {
EXPECT_EQ(kDummyDownloadId + offset, (*file)->id());
EXPECT_EQ(download_manager_, (*file)->GetDownloadManager());
EXPECT_FALSE((*file)->in_progress());
EXPECT_EQ(static_cast<int64>(expected_data_.size()),
(*file)->bytes_so_far());
// Make sure the data has been properly written to disk.
std::string disk_data;
EXPECT_TRUE(file_util::ReadFileToString((*file)->full_path(),
&disk_data));
EXPECT_EQ(expected_data_, disk_data);
// Make sure the mock BrowserThread outlives the DownloadFile to satisfy
// thread checks inside it.
file->reset();
}
void AppendDataToFile(scoped_ptr<DownloadFile>* file,
const std::string& data) {
EXPECT_TRUE((*file)->in_progress());
(*file)->AppendDataToFile(data.data(), data.size());
expected_data_ += data;
EXPECT_EQ(static_cast<int64>(expected_data_.size()),
(*file)->bytes_so_far());
}
protected:
// Temporary directory for renamed downloads.
ScopedTempDir temp_dir_;
DownloadStatusUpdater download_status_updater_;
scoped_refptr<DownloadManager> download_manager_;
linked_ptr<net::FileStream> file_stream_;
// DownloadFile instance we are testing.
scoped_ptr<DownloadFile> download_file_;
private:
MessageLoop loop_;
// UI thread.
BrowserThread ui_thread_;
// File thread to satisfy debug checks in DownloadFile.
BrowserThread file_thread_;
// Keep track of what data should be saved to the disk file.
std::string expected_data_;
};
const char* DownloadFileTest::kTestData1 =
"Let's write some data to the file!\n";
const char* DownloadFileTest::kTestData2 = "Writing more data.\n";
const char* DownloadFileTest::kTestData3 = "Final line.";
const char* DownloadFileTest::kDataHash =
"CBF68BF10F8003DB86B31343AFAC8C7175BD03FB5FC905650F8C80AF087443A8";
const int32 DownloadFileTest::kDummyDownloadId = 23;
const int DownloadFileTest::kDummyChildId = 3;
const int DownloadFileTest::kDummyRequestId = 67;
// Rename the file before any data is downloaded, after some has, after it all
// has, and after it's closed.
TEST_F(DownloadFileTest, RenameFileFinal) {
CreateDownloadFile(&download_file_, 0);
ASSERT_TRUE(download_file_->Initialize(true));
FilePath initial_path(download_file_->full_path());
EXPECT_TRUE(file_util::PathExists(initial_path));
FilePath path_1(initial_path.InsertBeforeExtensionASCII("_1"));
FilePath path_2(initial_path.InsertBeforeExtensionASCII("_2"));
FilePath path_3(initial_path.InsertBeforeExtensionASCII("_3"));
FilePath path_4(initial_path.InsertBeforeExtensionASCII("_4"));
// Rename the file before downloading any data.
EXPECT_TRUE(download_file_->Rename(path_1));
FilePath renamed_path = download_file_->full_path();
EXPECT_EQ(path_1, renamed_path);
// Check the files.
EXPECT_FALSE(file_util::PathExists(initial_path));
EXPECT_TRUE(file_util::PathExists(path_1));
// Download the data.
AppendDataToFile(&download_file_, kTestData1);
AppendDataToFile(&download_file_, kTestData2);
// Rename the file after downloading some data.
EXPECT_TRUE(download_file_->Rename(path_2));
renamed_path = download_file_->full_path();
EXPECT_EQ(path_2, renamed_path);
// Check the files.
EXPECT_FALSE(file_util::PathExists(path_1));
EXPECT_TRUE(file_util::PathExists(path_2));
AppendDataToFile(&download_file_, kTestData3);
// Rename the file after downloading all the data.
EXPECT_TRUE(download_file_->Rename(path_3));
renamed_path = download_file_->full_path();
EXPECT_EQ(path_3, renamed_path);
// Check the files.
EXPECT_FALSE(file_util::PathExists(path_2));
EXPECT_TRUE(file_util::PathExists(path_3));
// Should not be able to get the hash until the file is closed.
std::string hash;
EXPECT_FALSE(download_file_->GetSha256Hash(&hash));
download_file_->Finish();
// Rename the file after downloading all the data and closing the file.
EXPECT_TRUE(download_file_->Rename(path_4));
renamed_path = download_file_->full_path();
EXPECT_EQ(path_4, renamed_path);
// Check the files.
EXPECT_FALSE(file_util::PathExists(path_3));
EXPECT_TRUE(file_util::PathExists(path_4));
// Check the hash.
EXPECT_TRUE(download_file_->GetSha256Hash(&hash));
EXPECT_EQ(kDataHash, base::HexEncode(hash.data(), hash.size()));
DestroyDownloadFile(&download_file_, 0);
}
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