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// Copyright 2022 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include <mutex>
#include <utility>
#include "gtest/gtest.h"
#include "pw_rpc/pwpb/client_server_testing.h"
#include "pw_rpc_test_protos/test.rpc.pwpb.h"
#include "pw_sync/mutex.h"
namespace pw::rpc {
namespace {
namespace TestRequest = ::pw::rpc::test::pwpb::TestRequest;
namespace TestResponse = ::pw::rpc::test::pwpb::TestResponse;
namespace TestStreamResponse = ::pw::rpc::test::pwpb::TestStreamResponse;
} // namespace
namespace test {
using GeneratedService = ::pw::rpc::test::pw_rpc::pwpb::TestService;
class TestService final : public GeneratedService::Service<TestService> {
public:
Status TestUnaryRpc(const TestRequest::Message& request,
TestResponse::Message& response) {
response.value = request.integer + 1;
return static_cast<Status::Code>(request.status_code);
}
Status TestAnotherUnaryRpc(const TestRequest::Message& request,
TestResponse::Message& response) {
response.value = 42;
response.repeated_field.SetEncoder(
[](TestResponse::StreamEncoder& encoder) {
constexpr std::array<uint32_t, 3> kValues = {7, 8, 9};
return encoder.WriteRepeatedField(kValues);
});
return static_cast<Status::Code>(request.status_code);
}
static void TestServerStreamRpc(const TestRequest::Message&,
ServerWriter<TestStreamResponse::Message>&) {}
void TestClientStreamRpc(
ServerReader<TestRequest::Message, TestStreamResponse::Message>&) {}
void TestBidirectionalStreamRpc(
ServerReaderWriter<TestRequest::Message, TestStreamResponse::Message>&) {}
};
} // namespace test
namespace {
TEST(PwpbClientServerTestContext, ReceivesUnaryRpcResponse) {
PwpbClientServerTestContext<> ctx;
test::TestService service;
ctx.server().RegisterService(service);
TestResponse::Message response = {};
auto handler = [&response](const TestResponse::Message& server_response,
pw::Status) { response = server_response; };
TestRequest::Message request{.integer = 1, .status_code = OkStatus().code()};
auto call = test::GeneratedService::TestUnaryRpc(
ctx.client(), ctx.channel().id(), request, handler);
// Force manual forwarding of packets as context is not threaded
ctx.ForwardNewPackets();
const auto sent_request =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto sent_response =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
EXPECT_EQ(response.value, sent_response.value);
EXPECT_EQ(response.value, request.integer + 1);
EXPECT_EQ(request.integer, sent_request.integer);
}
TEST(PwpbClientServerTestContext, ReceivesMultipleResponses) {
PwpbClientServerTestContext<> ctx;
test::TestService service;
ctx.server().RegisterService(service);
TestResponse::Message response1 = {};
TestResponse::Message response2 = {};
auto handler1 = [&response1](const TestResponse::Message& server_response,
pw::Status) { response1 = server_response; };
auto handler2 = [&response2](const TestResponse::Message& server_response,
pw::Status) { response2 = server_response; };
TestRequest::Message request1{.integer = 1, .status_code = OkStatus().code()};
TestRequest::Message request2{.integer = 2, .status_code = OkStatus().code()};
const auto call1 = test::GeneratedService::TestUnaryRpc(
ctx.client(), ctx.channel().id(), request1, handler1);
// Force manual forwarding of packets as context is not threaded
ctx.ForwardNewPackets();
const auto call2 = test::GeneratedService::TestUnaryRpc(
ctx.client(), ctx.channel().id(), request2, handler2);
// Force manual forwarding of packets as context is not threaded
ctx.ForwardNewPackets();
const auto sent_request1 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto sent_request2 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
const auto sent_response1 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto sent_response2 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
EXPECT_EQ(response1.value, request1.integer + 1);
EXPECT_EQ(response2.value, request2.integer + 1);
EXPECT_EQ(response1.value, sent_response1.value);
EXPECT_EQ(response2.value, sent_response2.value);
EXPECT_EQ(request1.integer, sent_request1.integer);
EXPECT_EQ(request2.integer, sent_request2.integer);
}
TEST(PwpbClientServerTestContext,
ReceivesMultipleResponsesWithPacketProcessor) {
using ProtectedInt = std::pair<int, pw::sync::Mutex>;
ProtectedInt server_counter{};
auto server_processor = [&server_counter](
ClientServer& client_server,
pw::ConstByteSpan packet) -> pw::Status {
server_counter.second.lock();
++server_counter.first;
server_counter.second.unlock();
return client_server.ProcessPacket(packet);
};
ProtectedInt client_counter{};
auto client_processor = [&client_counter](
ClientServer& client_server,
pw::ConstByteSpan packet) -> pw::Status {
client_counter.second.lock();
++client_counter.first;
client_counter.second.unlock();
return client_server.ProcessPacket(packet);
};
PwpbClientServerTestContext<> ctx(server_processor, client_processor);
test::TestService service;
ctx.server().RegisterService(service);
TestResponse::Message response1 = {};
TestResponse::Message response2 = {};
auto handler1 = [&response1](const TestResponse::Message& server_response,
pw::Status) { response1 = server_response; };
auto handler2 = [&response2](const TestResponse::Message& server_response,
pw::Status) { response2 = server_response; };
TestRequest::Message request1{.integer = 1, .status_code = OkStatus().code()};
TestRequest::Message request2{.integer = 2, .status_code = OkStatus().code()};
const auto call1 = test::GeneratedService::TestUnaryRpc(
ctx.client(), ctx.channel().id(), request1, handler1);
// Force manual forwarding of packets as context is not threaded
ctx.ForwardNewPackets();
const auto call2 = test::GeneratedService::TestUnaryRpc(
ctx.client(), ctx.channel().id(), request2, handler2);
// Force manual forwarding of packets as context is not threaded
ctx.ForwardNewPackets();
const auto sent_request1 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto sent_request2 =
ctx.request<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
const auto sent_response1 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(0);
const auto sent_response2 =
ctx.response<test::pw_rpc::pwpb::TestService::TestUnaryRpc>(1);
EXPECT_EQ(response1.value, request1.integer + 1);
EXPECT_EQ(response2.value, request2.integer + 1);
EXPECT_EQ(response1.value, sent_response1.value);
EXPECT_EQ(response2.value, sent_response2.value);
EXPECT_EQ(request1.integer, sent_request1.integer);
EXPECT_EQ(request2.integer, sent_request2.integer);
server_counter.second.lock();
EXPECT_EQ(server_counter.first, 2);
server_counter.second.unlock();
client_counter.second.lock();
EXPECT_EQ(client_counter.first, 2);
client_counter.second.unlock();
}
TEST(PwpbClientServerTestContext, ResponseWithCallbacks) {
PwpbClientServerTestContext<> ctx;
test::TestService service;
ctx.server().RegisterService(service);
TestRequest::Message request{};
const auto call = test::GeneratedService::TestAnotherUnaryRpc(
ctx.client(), ctx.channel().id(), request);
// Force manual forwarding of packets as context is not threaded
ctx.ForwardNewPackets();
// To decode a response object that requires to set callbacks, pass it to the
// response() method as a parameter.
pw::Vector<uint32_t, 4> values{};
TestResponse::Message response{};
response.repeated_field.SetDecoder(
[&values](TestResponse::StreamDecoder& decoder) {
return decoder.ReadRepeatedField(values);
});
ctx.response<test::GeneratedService::TestAnotherUnaryRpc>(0, response);
EXPECT_EQ(42, response.value);
EXPECT_EQ(3u, values.size());
EXPECT_EQ(7u, values[0]);
EXPECT_EQ(8u, values[1]);
EXPECT_EQ(9u, values[2]);
}
} // namespace
} // namespace pw::rpc
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