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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 "chrome/browser/chromeos/file_system_provider/throttled_file_system.h"
#include <vector>
#include "base/files/file.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "base/run_loop.h"
#include "chrome/browser/chromeos/file_system_provider/abort_callback.h"
#include "chrome/browser/chromeos/file_system_provider/fake_provided_file_system.h"
#include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
#include "content/public/test/test_browser_thread_bundle.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace chromeos {
namespace file_system_provider {
namespace {
const char kExtensionId[] = "mbflcebpggnecokmikipoihdbecnjfoj";
const char kFileSystemId[] = "camera-pictures";
const char kDisplayName[] = "Camera Pictures";
typedef std::vector<base::File::Error> StatusLog;
typedef std::vector<std::pair<int, base::File::Error>> OpenLog;
// Writes a |result| to the |log| vector for a status callback.
void LogStatus(StatusLog* log, base::File::Error result) {
log->push_back(result);
}
// Writes a |result| to the |log| vector for opening a file.
void LogOpen(OpenLog* log, int handle, base::File::Error result) {
log->push_back(std::make_pair(handle, result));
}
} // namespace
class FileSystemProviderThrottledFileSystemTest : public testing::Test {
protected:
FileSystemProviderThrottledFileSystemTest() {}
virtual ~FileSystemProviderThrottledFileSystemTest() {}
virtual void SetUp() override {}
// Initializes the throttled file system with |limit| number of opened files
// at once. If 0, then no limit.
void SetUpFileSystem(size_t limit) {
MountOptions options(kFileSystemId, kDisplayName);
options.opened_files_limit = limit;
ProvidedFileSystemInfo file_system_info(kExtensionId, options,
base::FilePath() /* mount_path */);
file_system_.reset(new ThrottledFileSystem(
make_scoped_ptr(new FakeProvidedFileSystem(file_system_info))));
}
content::TestBrowserThreadBundle thread_bundle_;
scoped_ptr<ThrottledFileSystem> file_system_;
};
TEST_F(FileSystemProviderThrottledFileSystemTest, OpenFile_LimitedToOneAtOnce) {
SetUpFileSystem(1);
OpenLog first_open_log;
file_system_->OpenFile(base::FilePath(kFakeFilePath),
ThrottledFileSystem::OPEN_FILE_MODE_READ,
base::Bind(&LogOpen, &first_open_log));
OpenLog second_open_log;
file_system_->OpenFile(base::FilePath(kFakeFilePath),
ThrottledFileSystem::OPEN_FILE_MODE_READ,
base::Bind(&LogOpen, &second_open_log));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, first_open_log.size());
EXPECT_EQ(base::File::FILE_OK, first_open_log[0].second);
EXPECT_EQ(0u, second_open_log.size());
// Close the first file.
StatusLog close_log;
file_system_->CloseFile(first_open_log[0].first,
base::Bind(&LogStatus, &close_log));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, close_log.size());
EXPECT_EQ(base::File::FILE_OK, close_log[0]);
// The second enqueued file should be opened.
ASSERT_EQ(1u, first_open_log.size());
EXPECT_EQ(base::File::FILE_OK, first_open_log[0].second);
ASSERT_EQ(1u, second_open_log.size());
EXPECT_EQ(base::File::FILE_OK, second_open_log[0].second);
}
TEST_F(FileSystemProviderThrottledFileSystemTest, OpenFile_NoLimit) {
SetUpFileSystem(0); // No limit.
OpenLog first_open_log;
file_system_->OpenFile(base::FilePath(kFakeFilePath),
ThrottledFileSystem::OPEN_FILE_MODE_READ,
base::Bind(&LogOpen, &first_open_log));
OpenLog second_open_log;
file_system_->OpenFile(base::FilePath(kFakeFilePath),
ThrottledFileSystem::OPEN_FILE_MODE_READ,
base::Bind(&LogOpen, &second_open_log));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, first_open_log.size());
EXPECT_EQ(base::File::FILE_OK, first_open_log[0].second);
ASSERT_EQ(1u, second_open_log.size());
EXPECT_EQ(base::File::FILE_OK, second_open_log[0].second);
// Close files.
StatusLog first_close_log;
file_system_->CloseFile(first_open_log[0].first,
base::Bind(&LogStatus, &first_close_log));
StatusLog second_close_log;
file_system_->CloseFile(second_open_log[0].first,
base::Bind(&LogStatus, &second_close_log));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, first_close_log.size());
EXPECT_EQ(base::File::FILE_OK, first_close_log[0]);
ASSERT_EQ(1u, second_close_log.size());
EXPECT_EQ(base::File::FILE_OK, second_close_log[0]);
// Confirm, that files are not opened again.
EXPECT_EQ(1u, first_open_log.size());
EXPECT_EQ(1u, second_open_log.size());
}
TEST_F(FileSystemProviderThrottledFileSystemTest, AbortAfterRun) {
SetUpFileSystem(1);
OpenLog first_open_log;
AbortCallback abort_callback = file_system_->OpenFile(
base::FilePath(kFakeFilePath), ThrottledFileSystem::OPEN_FILE_MODE_READ,
base::Bind(&LogOpen, &first_open_log));
OpenLog second_open_log;
file_system_->OpenFile(base::FilePath(kFakeFilePath),
ThrottledFileSystem::OPEN_FILE_MODE_READ,
base::Bind(&LogOpen, &second_open_log));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, first_open_log.size());
EXPECT_EQ(base::File::FILE_OK, first_open_log[0].second);
EXPECT_EQ(0u, second_open_log.size());
// The first file is opened, so the opening operation has completed, then
// aborting it should result in an error. This is tested, as from the queue
// point of view, the opening task stays in the queue until closing the file.
StatusLog abort_log;
abort_callback.Run(base::Bind(&LogStatus, &abort_log));
base::RunLoop().RunUntilIdle();
ASSERT_EQ(1u, abort_log.size());
EXPECT_EQ(base::File::FILE_ERROR_INVALID_OPERATION, abort_log[0]);
// Confirm, that the second task is not executed after a invalid abort of the
// first one.
EXPECT_EQ(1u, first_open_log.size());
EXPECT_EQ(0u, second_open_log.size());
}
} // namespace file_system_provider
} // namespace chromeos
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