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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/mirroring/service/rpc_dispatcher_impl.h"
#include <string>
#include "base/base64.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/json/json_reader.h"
#include "base/test/task_environment.h"
#include "components/mirroring/service/value_util.h"
#include "components/openscreen_platform/task_runner.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/openscreen/src/cast/common/public/message_port.h"
#include "third_party/openscreen/src/cast/streaming/message_fields.h"
#include "third_party/openscreen/src/cast/streaming/public/session_messenger.h"
#include "third_party/openscreen/src/platform/base/error.h"
using ::testing::_;
using ::testing::InvokeWithoutArgs;
namespace mirroring {
namespace {
constexpr char kSourceId[] = "sender-123";
constexpr char kReceiverId[] = "receiver-42";
class MockMessagePort : public openscreen::cast::MessagePort {
public:
MockMessagePort() = default;
~MockMessagePort() override = default;
MOCK_METHOD(void, SetClient, (openscreen::cast::MessagePort::Client&), ());
MOCK_METHOD(void, ResetClient, (), ());
MOCK_METHOD(void,
PostMessageMock,
(const std::string&, const std::string&, const std::string&),
());
void PostMessage(const std::string& destination_sender_id,
const std::string& message_namespace,
const std::string& message) override {
posted_messages_.push_back(message);
PostMessageMock(destination_sender_id, message_namespace, message);
}
const std::vector<std::string>& posted_messages() const {
return posted_messages_;
}
private:
std::vector<std::string> posted_messages_;
};
} // namespace
class RpcDispatcherImplTest : public ::testing::Test {
public:
RpcDispatcherImplTest()
: task_environment_runner_(task_environment_.GetMainThreadTaskRunner()),
messenger_(
mock_message_port_,
kSourceId,
kReceiverId,
[this](openscreen::Error error) { OnMessengerError(error); },
task_environment_runner_),
dispatcher_(messenger_) {}
~RpcDispatcherImplTest() override { task_environment_.RunUntilIdle(); }
MOCK_METHOD(void, OnMessengerError, (openscreen::Error), ());
MOCK_METHOD(void, OnMessage, (const std::vector<uint8_t>&), ());
protected:
base::test::TaskEnvironment& task_environment() { return task_environment_; }
RpcDispatcherImpl& dispatcher() { return dispatcher_; }
MockMessagePort& message_port() { return mock_message_port_; }
private:
base::test::TaskEnvironment task_environment_;
openscreen_platform::TaskRunner task_environment_runner_;
testing::NiceMock<MockMessagePort> mock_message_port_;
openscreen::cast::SenderSessionMessenger messenger_;
RpcDispatcherImpl dispatcher_;
};
TEST_F(RpcDispatcherImplTest, ReceivesMessages) {
static const openscreen::cast::ReceiverMessage kMessage{
.type = openscreen::cast::ReceiverMessage::Type::kRpc,
.sequence_number = -1,
.valid = true,
.body = std::vector<uint8_t>{1, 2, 3, 4}};
// Before we subscribe, messages should be ignored.
EXPECT_CALL(*this, OnMessage(_)).Times(0);
dispatcher().OnMessage(kMessage);
EXPECT_CALL(*this, OnMessage(testing::ElementsAre(1, 2, 3, 4)));
dispatcher().Subscribe(base::BindRepeating(&RpcDispatcherImplTest::OnMessage,
base::Unretained(this)));
dispatcher().OnMessage(kMessage);
}
TEST_F(RpcDispatcherImplTest, SendsMessages) {
static const std::vector<uint8_t> kMessage{1, 2, 3, 4};
EXPECT_CALL(message_port(),
PostMessageMock(kReceiverId,
openscreen::cast::kCastRemotingNamespace, _));
EXPECT_TRUE(dispatcher().SendOutboundMessage(kMessage));
EXPECT_EQ(1u, message_port().posted_messages().size());
std::optional<base::Value> value =
base::JSONReader::Read(message_port().posted_messages()[0]);
ASSERT_TRUE(value);
std::string message_type;
EXPECT_TRUE(GetString(*value, "type", &message_type));
EXPECT_EQ("RPC", message_type);
std::string message_binary;
EXPECT_TRUE(GetString(*value, "rpc", &message_binary));
EXPECT_EQ("AQIDBA==", message_binary);
}
} // namespace mirroring
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