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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include <cmath>
#include <string>
#include "base/compiler_specific.h"
#include "base/files/file_util.h"
#include "base/files/platform_file.h"
#include "base/functional/bind.h"
#include "base/functional/callback_forward.h"
#include "base/json/json_reader.h"
#include "base/logging.h"
#include "base/message_loop/message_pump_type.h"
#include "base/task/single_thread_task_runner.h"
#include "base/test/task_environment.h"
#include "base/threading/platform_thread.h"
#include "base/threading/thread.h"
#include "base/time/time.h"
#include "chrome/test/chromedriver/net/pipe_reader_posix.h"
#include "chrome/test/chromedriver/net/timeout.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace {
class PipeReaderPosixTest : public testing::Test {
protected:
PipeReaderPosixTest() : long_timeout_(base::Minutes(1)) {}
~PipeReaderPosixTest() override = default;
void SetUp() override {}
void TearDown() override {}
Timeout long_timeout() const { return Timeout(long_timeout_); }
bool CreatePipeReader(std::unique_ptr<PipeReaderPosix>* reader,
base::File* write_pipe) {
base::ScopedPlatformFile read_file;
base::ScopedPlatformFile write_file;
if (!base::CreatePipe(&read_file, &write_file)) {
VLOG(0) << "unable to create a pipe";
return false;
}
if (!base::SetCloseOnExec(read_file.get())) {
VLOG(0) << "unable to label the pipes as close on exec";
return false;
}
*write_pipe = base::File(std::move(write_file));
*reader = std::make_unique<PipeReaderPosix>();
(*reader)->Bind(std::move(read_file));
return true;
}
std::pair<std::string, int> ReadAll(PipeReaderPosix* reader) {
scoped_refptr<net::IOBufferWithSize> buffer =
base::MakeRefCounted<net::IOBufferWithSize>(4096);
auto callback = [](base::RepeatingClosure extra_callback, int* received,
int rv) {
*received = rv;
extra_callback.Run();
};
int rv = 0;
std::string received_message;
while (true) {
base::RunLoop run_loop;
int received = 0;
rv = reader->Read(
buffer.get(), buffer->size(),
base::BindOnce(callback, run_loop.QuitClosure(), &received));
if (rv == net::ERR_IO_PENDING) {
run_loop.Run();
rv = received;
}
if (rv <= 0) {
break;
}
received_message.insert(received_message.end(), buffer->data(),
buffer->data() + rv);
}
return std::make_pair(std::move(received_message), rv);
}
base::test::SingleThreadTaskEnvironment task_environment_{
base::test::SingleThreadTaskEnvironment::MainThreadType::IO};
const base::TimeDelta long_timeout_;
};
} // namespace
TEST_F(PipeReaderPosixTest, Ctor) {
PipeReaderPosix reader;
EXPECT_FALSE(reader.IsConnected());
}
TEST_F(PipeReaderPosixTest, CreateAndBind) {
std::unique_ptr<PipeReaderPosix> reader;
base::File write_pipe;
EXPECT_TRUE(CreatePipeReader(&reader, &write_pipe));
EXPECT_TRUE(reader->IsConnected());
}
TEST_F(PipeReaderPosixTest, Close) {
std::unique_ptr<PipeReaderPosix> reader;
base::File write_pipe;
EXPECT_TRUE(CreatePipeReader(&reader, &write_pipe));
EXPECT_TRUE(reader->IsConnected());
reader->Close();
EXPECT_FALSE(reader->IsConnected());
}
TEST_F(PipeReaderPosixTest, Read) {
std::unique_ptr<PipeReaderPosix> reader;
base::File write_pipe;
EXPECT_TRUE(CreatePipeReader(&reader, &write_pipe));
EXPECT_TRUE(reader->IsConnected());
base::Thread::Options options;
options.message_pump_type = base::MessagePumpType::IO;
base::Thread thread("WriterThread");
ASSERT_TRUE(thread.StartWithOptions(std::move(options)));
const std::string sent_message = "Hello, World!";
thread.task_runner()->PostTask(
FROM_HERE,
base::BindOnce(
[](base::File write_pipe, std::string message) {
write_pipe.WriteAtCurrentPos(base::as_byte_span(message));
},
std::move(write_pipe), sent_message));
std::pair<std::string, int> received = ReadAll(reader.get());
EXPECT_EQ(sent_message, received.first);
EXPECT_TRUE(received.second == 0 ||
received.second == net::ERR_CONNECTION_CLOSED);
EXPECT_FALSE(reader->IsConnected());
}
TEST_F(PipeReaderPosixTest, ReadClosed) {
std::unique_ptr<PipeReaderPosix> reader;
base::File write_pipe;
EXPECT_TRUE(CreatePipeReader(&reader, &write_pipe));
EXPECT_TRUE(reader->IsConnected());
write_pipe.Close();
std::string received_message(1024, ' ');
scoped_refptr<net::StringIOBuffer> buffer =
base::MakeRefCounted<net::StringIOBuffer>(received_message);
EXPECT_EQ(net::ERR_CONNECTION_CLOSED,
reader->Read(buffer.get(), buffer->size(),
base::BindOnce([](int rv) {})));
EXPECT_FALSE(reader->IsConnected());
}
TEST_F(PipeReaderPosixTest, ReadLarge) {
std::unique_ptr<PipeReaderPosix> reader;
base::File write_pipe;
EXPECT_TRUE(CreatePipeReader(&reader, &write_pipe));
EXPECT_TRUE(reader->IsConnected());
base::Thread::Options options;
options.message_pump_type = base::MessagePumpType::IO;
base::Thread thread("WriterThread");
ASSERT_TRUE(thread.StartWithOptions(std::move(options)));
const int expected_message_size = 1 << 20;
std::string sent_message(expected_message_size, 'a');
thread.task_runner()->PostTask(
FROM_HERE,
base::BindOnce(
[](base::File write_pipe, std::string message) {
write_pipe.WriteAtCurrentPos(base::as_byte_span(message));
},
std::move(write_pipe), sent_message));
std::pair<std::string, int> received = ReadAll(reader.get());
EXPECT_EQ(sent_message, received.first);
EXPECT_TRUE(received.second == 0 ||
received.second == net::ERR_CONNECTION_CLOSED);
EXPECT_FALSE(reader->IsConnected());
}
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