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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/file_system_provider/operations/read_file.h"
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/containers/span.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/memory/ref_counted.h"
#include "base/values.h"
#include "chrome/browser/ash/file_system_provider/icon_set.h"
#include "chrome/browser/ash/file_system_provider/operations/test_util.h"
#include "chrome/common/extensions/api/file_system_provider.h"
#include "chrome/common/extensions/api/file_system_provider_capabilities/file_system_provider_capabilities_handler.h"
#include "chrome/common/extensions/api/file_system_provider_internal.h"
#include "extensions/browser/event_router.h"
#include "net/base/io_buffer.h"
#include "storage/browser/file_system/async_file_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash::file_system_provider::operations {
namespace {
const char kExtensionId[] = "mbflcebpggnecokmikipoihdbecnjfoj";
const char kFileSystemId[] = "testing-file-system";
const int kRequestId = 2;
const int kFileHandle = 3;
const int kOffset = 10;
const int kLength = 5;
// Callback invocation logger. Acts as a fileapi end-point.
class CallbackLogger {
public:
class Event {
public:
Event(int chunk_length, bool has_more, base::File::Error result)
: chunk_length_(chunk_length), has_more_(has_more), result_(result) {}
Event(const Event&) = delete;
Event& operator=(const Event&) = delete;
virtual ~Event() = default;
int chunk_length() const { return chunk_length_; }
bool has_more() const { return has_more_; }
base::File::Error result() const { return result_; }
private:
int chunk_length_;
bool has_more_;
base::File::Error result_;
};
CallbackLogger() = default;
CallbackLogger(const CallbackLogger&) = delete;
CallbackLogger& operator=(const CallbackLogger&) = delete;
virtual ~CallbackLogger() = default;
void OnReadFile(int chunk_length, bool has_more, base::File::Error result) {
events_.push_back(std::make_unique<Event>(chunk_length, has_more, result));
}
std::vector<std::unique_ptr<Event>>& events() { return events_; }
private:
std::vector<std::unique_ptr<Event>> events_;
};
} // namespace
class FileSystemProviderOperationsReadFileTest : public testing::Test {
protected:
FileSystemProviderOperationsReadFileTest() = default;
~FileSystemProviderOperationsReadFileTest() override = default;
void SetUp() override {
file_system_info_ = ProvidedFileSystemInfo(
kExtensionId, MountOptions(kFileSystemId, /*display_name=*/""),
base::FilePath(), /*configurable=*/false, /*watchable=*/true,
extensions::SOURCE_FILE, IconSet());
io_buffer_ = base::MakeRefCounted<net::IOBufferWithSize>(kOffset + kLength);
}
ProvidedFileSystemInfo file_system_info_;
scoped_refptr<net::IOBuffer> io_buffer_;
};
TEST_F(FileSystemProviderOperationsReadFileTest, Execute) {
using extensions::api::file_system_provider::ReadFileRequestedOptions;
util::LoggingDispatchEventImpl dispatcher(/*dispatch_reply=*/true);
CallbackLogger callback_logger;
ReadFile read_file(&dispatcher, file_system_info_, kFileHandle,
io_buffer_.get(), kOffset, kLength,
base::BindRepeating(&CallbackLogger::OnReadFile,
base::Unretained(&callback_logger)));
EXPECT_TRUE(read_file.Execute(kRequestId));
ASSERT_EQ(1u, dispatcher.events().size());
extensions::Event* event = dispatcher.events()[0].get();
EXPECT_EQ(
extensions::api::file_system_provider::OnReadFileRequested::kEventName,
event->event_name);
const base::Value::List& event_args = event->event_args;
ASSERT_EQ(1u, event_args.size());
const base::Value* options_as_value = &event_args[0];
ASSERT_TRUE(options_as_value->is_dict());
auto options =
ReadFileRequestedOptions::FromValue(options_as_value->GetDict());
ASSERT_TRUE(options);
EXPECT_EQ(kFileSystemId, options->file_system_id);
EXPECT_EQ(kRequestId, options->request_id);
EXPECT_EQ(kFileHandle, options->open_request_id);
EXPECT_EQ(kOffset, static_cast<double>(options->offset));
EXPECT_EQ(kLength, options->length);
}
TEST_F(FileSystemProviderOperationsReadFileTest, Execute_NoListener) {
util::LoggingDispatchEventImpl dispatcher(/*dispatch_reply=*/false);
CallbackLogger callback_logger;
ReadFile read_file(&dispatcher, file_system_info_, kFileHandle,
io_buffer_.get(), kOffset, kLength,
base::BindRepeating(&CallbackLogger::OnReadFile,
base::Unretained(&callback_logger)));
EXPECT_FALSE(read_file.Execute(kRequestId));
}
TEST_F(FileSystemProviderOperationsReadFileTest, OnSuccess) {
using extensions::api::file_system_provider_internal::
ReadFileRequestedSuccess::Params;
util::LoggingDispatchEventImpl dispatcher(/*dispatch_reply=*/true);
CallbackLogger callback_logger;
ReadFile read_file(&dispatcher, file_system_info_, kFileHandle,
io_buffer_.get(), kOffset, kLength,
base::BindRepeating(&CallbackLogger::OnReadFile,
base::Unretained(&callback_logger)));
EXPECT_TRUE(read_file.Execute(kRequestId));
const std::string data = "ABCDE";
const bool has_more = false;
const int execution_time = 0;
base::Value::List list;
list.Append(kFileSystemId);
list.Append(kRequestId);
list.Append(base::Value(base::as_byte_span(data)));
list.Append(has_more);
list.Append(execution_time);
std::optional<Params> params = Params::Create(std::move(list));
ASSERT_TRUE(params.has_value());
RequestValue request_value =
RequestValue::CreateForReadFileSuccess(std::move(*params));
read_file.OnSuccess(kRequestId, std::move(request_value), has_more);
ASSERT_EQ(1u, callback_logger.events().size());
CallbackLogger::Event* event = callback_logger.events()[0].get();
EXPECT_EQ(kLength, event->chunk_length());
EXPECT_FALSE(event->has_more());
EXPECT_EQ(data, std::string(io_buffer_->data(), kLength));
EXPECT_EQ(base::File::FILE_OK, event->result());
}
TEST_F(FileSystemProviderOperationsReadFileTest, OnError) {
util::LoggingDispatchEventImpl dispatcher(/*dispatch_reply=*/true);
CallbackLogger callback_logger;
ReadFile read_file(&dispatcher, file_system_info_, kFileHandle,
io_buffer_.get(), kOffset, kLength,
base::BindRepeating(&CallbackLogger::OnReadFile,
base::Unretained(&callback_logger)));
EXPECT_TRUE(read_file.Execute(kRequestId));
read_file.OnError(kRequestId, RequestValue(),
base::File::FILE_ERROR_TOO_MANY_OPENED);
ASSERT_EQ(1u, callback_logger.events().size());
CallbackLogger::Event* event = callback_logger.events()[0].get();
EXPECT_EQ(base::File::FILE_ERROR_TOO_MANY_OPENED, event->result());
}
} // namespace ash::file_system_provider::operations
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