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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/protocol/channel_socket_adapter.h"
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include "base/functional/bind.h"
#include "base/memory/ref_counted.h"
#include "base/test/task_environment.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "net/socket/socket.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/webrtc/api/array_view.h"
#include "third_party/webrtc/p2p/base/mock_ice_transport.h"
#include "third_party/webrtc/rtc_base/network/received_packet.h"
using net::IOBufferWithSize;
using testing::_;
using testing::Return;
namespace remoting::protocol {
namespace {
const int kBufferSize = 4096;
const uint8_t kTestData[] = "data";
const int kTestDataSize = 4;
const int kTestError = -32123;
} // namespace
class IceTransportForTest : public webrtc::MockIceTransport {
public:
// Exposed for testing.
using webrtc::PacketTransportInternal::NotifyPacketReceived;
};
class TransportChannelSocketAdapterTest : public testing::Test {
public:
TransportChannelSocketAdapterTest()
: callback_(
base::BindRepeating(&TransportChannelSocketAdapterTest::Callback,
base::Unretained(this))),
callback_result_(0) {}
protected:
void SetUp() override {
target_ = std::make_unique<TransportChannelSocketAdapter>(&channel_);
}
void Callback(int result) { callback_result_ = result; }
IceTransportForTest channel_;
std::unique_ptr<TransportChannelSocketAdapter> target_;
net::CompletionRepeatingCallback callback_;
int callback_result_;
base::test::SingleThreadTaskEnvironment task_environment_{
base::test::SingleThreadTaskEnvironment::MainThreadType::IO};
};
// Verify that Read() returns net::ERR_IO_PENDING.
TEST_F(TransportChannelSocketAdapterTest, Read) {
auto buffer = base::MakeRefCounted<IOBufferWithSize>(kBufferSize);
int result = target_->Recv(buffer.get(), kBufferSize, callback_);
ASSERT_EQ(net::ERR_IO_PENDING, result);
channel_.NotifyPacketReceived(
webrtc::ReceivedIpPacket(webrtc::MakeArrayView(kTestData, kTestDataSize),
webrtc::SocketAddress()));
EXPECT_EQ(kTestDataSize, callback_result_);
}
// Verify that Read() after Close() returns error.
TEST_F(TransportChannelSocketAdapterTest, ReadClose) {
auto buffer = base::MakeRefCounted<IOBufferWithSize>(kBufferSize);
int result = target_->Recv(buffer.get(), kBufferSize, callback_);
ASSERT_EQ(net::ERR_IO_PENDING, result);
target_->Close(kTestError);
EXPECT_EQ(kTestError, callback_result_);
// All Recv() calls after Close() should return the error.
EXPECT_EQ(kTestError, target_->Recv(buffer.get(), kBufferSize, callback_));
}
// Verify that Send sends the packet and returns correct result.
TEST_F(TransportChannelSocketAdapterTest, Send) {
auto buffer = base::MakeRefCounted<IOBufferWithSize>(kTestDataSize);
EXPECT_CALL(channel_, writable()).WillOnce(Return(true));
EXPECT_CALL(channel_, SendPacket(buffer->data(), kTestDataSize, _, 0))
.WillOnce(Return(kTestDataSize));
int result = target_->Send(buffer.get(), kTestDataSize, callback_);
EXPECT_EQ(kTestDataSize, result);
}
// Verify that the message is still sent if Send() is called while
// socket is not open yet. The result is the packet is lost.
TEST_F(TransportChannelSocketAdapterTest, SendPending) {
auto buffer = base::MakeRefCounted<IOBufferWithSize>(kTestDataSize);
EXPECT_CALL(channel_, writable()).WillOnce(Return(true));
EXPECT_CALL(channel_, SendPacket(buffer->data(), kTestDataSize, _, 0))
.Times(1)
.WillOnce(Return(SOCKET_ERROR));
EXPECT_CALL(channel_, GetError()).WillOnce(Return(EWOULDBLOCK));
int result = target_->Send(buffer.get(), kTestDataSize, callback_);
ASSERT_EQ(net::OK, result);
}
} // namespace remoting::protocol
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