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// Copyright 2020 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 "cast/streaming/rpc_broker.h"
#include <memory>
#include <vector>
#include "cast/streaming/remoting.pb.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using testing::_;
using testing::Invoke;
using testing::Return;
namespace openscreen {
namespace cast {
namespace {
class FakeMessager {
public:
void OnReceivedRpc(const RpcMessage& message) {
received_rpc_ = message;
received_count_++;
}
void OnSentRpc(const std::vector<uint8_t>& message) {
EXPECT_TRUE(sent_rpc_.ParseFromArray(message.data(), message.size()));
sent_count_++;
}
int received_count() const { return received_count_; }
const RpcMessage& received_rpc() const { return received_rpc_; }
int sent_count() const { return sent_count_; }
const RpcMessage& sent_rpc() const { return sent_rpc_; }
void set_handle(RpcBroker::Handle handle) { handle_ = handle; }
RpcBroker::Handle handle() { return handle_; }
private:
RpcMessage received_rpc_;
int received_count_ = 0;
RpcMessage sent_rpc_;
int sent_count_ = 0;
RpcBroker::Handle handle_ = -1;
};
} // namespace
class RpcBrokerTest : public testing::Test {
protected:
void SetUp() override {
fake_messager_ = std::make_unique<FakeMessager>();
ASSERT_FALSE(fake_messager_->received_count());
rpc_broker_ = std::make_unique<RpcBroker>(
[p = fake_messager_.get()](std::vector<uint8_t> message) {
p->OnSentRpc(message);
});
const auto handle = rpc_broker_->GetUniqueHandle();
fake_messager_->set_handle(handle);
rpc_broker_->RegisterMessageReceiverCallback(
handle, [p = fake_messager_.get()](const RpcMessage& message) {
p->OnReceivedRpc(message);
});
}
std::unique_ptr<FakeMessager> fake_messager_;
std::unique_ptr<RpcBroker> rpc_broker_;
};
TEST_F(RpcBrokerTest, TestProcessMessageFromRemoteRegistered) {
RpcMessage rpc;
rpc.set_handle(fake_messager_->handle());
rpc_broker_->ProcessMessageFromRemote(rpc);
ASSERT_EQ(1, fake_messager_->received_count());
}
TEST_F(RpcBrokerTest, TestProcessMessageFromRemoteUnregistered) {
RpcMessage rpc;
rpc_broker_->UnregisterMessageReceiverCallback(fake_messager_->handle());
rpc_broker_->ProcessMessageFromRemote(rpc);
ASSERT_EQ(0, fake_messager_->received_count());
}
TEST_F(RpcBrokerTest, CanSendMultipleMessages) {
for (int i = 0; i < 10; ++i) {
rpc_broker_->SendMessageToRemote(RpcMessage{});
}
EXPECT_EQ(10, fake_messager_->sent_count());
}
TEST_F(RpcBrokerTest, SendMessageCallback) {
// Send message for RPC broker to process.
RpcMessage sent_rpc;
sent_rpc.set_handle(fake_messager_->handle());
sent_rpc.set_proc(RpcMessage::RPC_R_SETVOLUME);
sent_rpc.set_double_value(2.3);
rpc_broker_->SendMessageToRemote(sent_rpc);
// Check if received message is identical to the one sent earlier.
ASSERT_EQ(1, fake_messager_->sent_count());
const RpcMessage& message = fake_messager_->sent_rpc();
ASSERT_EQ(fake_messager_->handle(), message.handle());
ASSERT_EQ(RpcMessage::RPC_R_SETVOLUME, message.proc());
ASSERT_EQ(2.3, message.double_value());
}
TEST_F(RpcBrokerTest, ProcessMessageWithRegisteredHandle) {
// Send message for RPC broker to process.
RpcMessage sent_rpc;
sent_rpc.set_handle(fake_messager_->handle());
sent_rpc.set_proc(RpcMessage::RPC_R_SETVOLUME);
sent_rpc.set_double_value(3.4);
rpc_broker_->ProcessMessageFromRemote(sent_rpc);
// Checks if received message is identical to the one sent earlier.
ASSERT_EQ(1, fake_messager_->received_count());
const RpcMessage& received_rpc = fake_messager_->received_rpc();
ASSERT_EQ(fake_messager_->handle(), received_rpc.handle());
ASSERT_EQ(RpcMessage::RPC_R_SETVOLUME, received_rpc.proc());
ASSERT_EQ(3.4, received_rpc.double_value());
}
TEST_F(RpcBrokerTest, ProcessMessageWithUnregisteredHandle) {
// Send message for RPC broker to process.
RpcMessage sent_rpc;
RpcBroker::Handle different_handle = fake_messager_->handle() + 1;
sent_rpc.set_handle(different_handle);
sent_rpc.set_proc(RpcMessage::RPC_R_SETVOLUME);
sent_rpc.set_double_value(4.5);
rpc_broker_->ProcessMessageFromRemote(sent_rpc);
// We shouldn't have gotten the message since the handle is different.
ASSERT_EQ(0, fake_messager_->received_count());
}
TEST_F(RpcBrokerTest, Registration) {
const auto handle = fake_messager_->handle();
ASSERT_TRUE(rpc_broker_->IsRegisteredForTesting(handle));
rpc_broker_->UnregisterMessageReceiverCallback(handle);
ASSERT_FALSE(rpc_broker_->IsRegisteredForTesting(handle));
}
} // namespace cast
} // namespace openscreen
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