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// Copyright 2015 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/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "base/thread_task_runner_handle.h"
#include "chrome/browser/net/file_downloader.h"
#include "content/public/browser/browser_thread.h"
#include "net/url_request/test_url_fetcher_factory.h"
#include "net/url_request/url_request_test_util.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
const char kURL[] = "https://www.url.com/path";
const char kFilename[] = "filename.ext";
const char kFileContents1[] = "file contents";
const char kFileContents2[] = "different contents";
class FileDownloaderTest : public testing::Test {
public:
FileDownloaderTest()
: request_context_(new net::TestURLRequestContextGetter(
base::ThreadTaskRunnerHandle::Get())),
url_fetcher_factory_(nullptr) {}
void SetUp() override {
ASSERT_TRUE(dir_.CreateUniqueTempDir());
path_ = dir_.path().AppendASCII(kFilename);
ASSERT_FALSE(base::PathExists(path_));
}
MOCK_METHOD1(OnDownloadFinished, void(bool success));
protected:
const base::FilePath& path() const { return path_; }
void SetValidResponse() {
url_fetcher_factory_.SetFakeResponse(
GURL(kURL), kFileContents1, net::HTTP_OK,
net::URLRequestStatus::SUCCESS);
}
void SetValidResponse2() {
url_fetcher_factory_.SetFakeResponse(
GURL(kURL), kFileContents2, net::HTTP_OK,
net::URLRequestStatus::SUCCESS);
}
void SetFailedResponse() {
url_fetcher_factory_.SetFakeResponse(
GURL(kURL), std::string(), net::HTTP_NOT_FOUND,
net::URLRequestStatus::SUCCESS);
}
void Download(bool overwrite, bool expect_success) {
FileDownloader downloader(
GURL(kURL), path_, overwrite, request_context_.get(),
base::Bind(&FileDownloaderTest::OnDownloadFinished,
base::Unretained(this)));
EXPECT_CALL(*this, OnDownloadFinished(expect_success));
// Wait for the FileExists check to happen if necessary.
if (!overwrite)
content::BrowserThread::GetBlockingPool()->FlushForTesting();
// Wait for the actual download to happen.
base::RunLoop().RunUntilIdle();
// Wait for the FileMove to happen.
content::BrowserThread::GetBlockingPool()->FlushForTesting();
base::RunLoop().RunUntilIdle();
}
private:
base::ScopedTempDir dir_;
base::FilePath path_;
base::MessageLoop message_loop_;
scoped_refptr<net::TestURLRequestContextGetter> request_context_;
net::FakeURLFetcherFactory url_fetcher_factory_;
};
TEST_F(FileDownloaderTest, Success) {
SetValidResponse();
Download(true, true);
EXPECT_TRUE(base::PathExists(path()));
std::string contents;
ASSERT_TRUE(base::ReadFileToString(path(), &contents));
EXPECT_EQ(std::string(kFileContents1), contents);
}
TEST_F(FileDownloaderTest, Failure) {
SetFailedResponse();
Download(true, false);
EXPECT_FALSE(base::PathExists(path()));
}
TEST_F(FileDownloaderTest, Overwrite) {
SetValidResponse();
Download(true, true);
ASSERT_TRUE(base::PathExists(path()));
std::string contents;
ASSERT_TRUE(base::ReadFileToString(path(), &contents));
ASSERT_EQ(std::string(kFileContents1), contents);
SetValidResponse2();
Download(true, true);
// The file should have been overwritten with the new contents.
EXPECT_TRUE(base::PathExists(path()));
ASSERT_TRUE(base::ReadFileToString(path(), &contents));
EXPECT_EQ(std::string(kFileContents2), contents);
}
TEST_F(FileDownloaderTest, DontOverwrite) {
SetValidResponse();
Download(true, true);
ASSERT_TRUE(base::PathExists(path()));
std::string contents;
ASSERT_TRUE(base::ReadFileToString(path(), &contents));
EXPECT_EQ(std::string(kFileContents1), contents);
SetValidResponse2();
Download(false, true);
// The file should still have the old contents.
EXPECT_TRUE(base::PathExists(path()));
ASSERT_TRUE(base::ReadFileToString(path(), &contents));
EXPECT_EQ(std::string(kFileContents1), contents);
}
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