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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 "pw_rpc/pwpb/internal/method_union.h"
#include <array>
#include "gtest/gtest.h"
#include "pw_rpc/internal/test_utils.h"
#include "pw_rpc/service.h"
#include "pw_rpc_pwpb_private/internal_test_utils.h"
#include "pw_rpc_test_protos/test.pwpb.h"
namespace pw::rpc::internal {
namespace {
template <typename Implementation>
class FakeGeneratedService : public Service {
public:
constexpr FakeGeneratedService(uint32_t id) : Service(id, kMethods) {}
static constexpr std::array<PwpbMethodUnion, 4> kMethods = {
GetPwpbOrRawMethodFor<&Implementation::DoNothing,
MethodType::kUnary,
pw::rpc::test::Empty::Message,
pw::rpc::test::Empty::Message>(
10u,
kPwpbMethodSerde<&pw::rpc::test::Empty::kMessageFields,
&pw::rpc::test::Empty::kMessageFields>),
GetPwpbOrRawMethodFor<&Implementation::RawStream,
MethodType::kServerStreaming,
pw::rpc::test::TestRequest::Message,
pw::rpc::test::TestResponse::Message>(
11u,
kPwpbMethodSerde<&pw::rpc::test::TestRequest::kMessageFields,
&pw::rpc::test::TestResponse::kMessageFields>),
GetPwpbOrRawMethodFor<&Implementation::AddFive,
MethodType::kUnary,
pw::rpc::test::TestRequest::Message,
pw::rpc::test::TestResponse::Message>(
12u,
kPwpbMethodSerde<&pw::rpc::test::TestRequest::kMessageFields,
&pw::rpc::test::TestResponse::kMessageFields>),
GetPwpbOrRawMethodFor<&Implementation::StartStream,
MethodType::kServerStreaming,
pw::rpc::test::TestRequest::Message,
pw::rpc::test::TestResponse::Message>(
13u,
kPwpbMethodSerde<&pw::rpc::test::TestRequest::kMessageFields,
&pw::rpc::test::TestResponse::kMessageFields>),
};
};
class FakeGeneratedServiceImpl
: public FakeGeneratedService<FakeGeneratedServiceImpl> {
public:
FakeGeneratedServiceImpl(uint32_t id) : FakeGeneratedService(id) {}
Status AddFive(const pw::rpc::test::TestRequest::Message& request,
pw::rpc::test::TestResponse::Message& response) {
last_request = request;
response.value = request.integer + 5;
return Status::Unauthenticated();
}
void DoNothing(ConstByteSpan, RawUnaryResponder& responder) {
ASSERT_EQ(OkStatus(), responder.Finish({}, Status::Unknown()));
}
void RawStream(ConstByteSpan, RawServerWriter& writer) {
last_raw_writer = std::move(writer);
}
void StartStream(
const pw::rpc::test::TestRequest::Message& request,
PwpbServerWriter<pw::rpc::test::TestResponse::Message>& writer) {
last_request = request;
last_writer = std::move(writer);
}
pw::rpc::test::TestRequest::Message last_request;
PwpbServerWriter<pw::rpc::test::TestResponse::Message> last_writer;
RawServerWriter last_raw_writer;
};
TEST(PwpbMethodUnion, Raw_CallsUnaryMethod) {
const Method& method =
std::get<0>(FakeGeneratedServiceImpl::kMethods).method();
ServerContextForTest<FakeGeneratedServiceImpl> context(method);
rpc_lock().lock();
method.Invoke(context.get(), context.request({}));
const Packet& response = context.output().last_packet();
EXPECT_EQ(response.status(), Status::Unknown());
}
TEST(PwpbMethodUnion, Raw_CallsServerStreamingMethod) {
PW_ENCODE_PB(
pw::rpc::test::TestRequest, request, .integer = 555, .status_code = 0);
const Method& method =
std::get<1>(FakeGeneratedServiceImpl::kMethods).method();
ServerContextForTest<FakeGeneratedServiceImpl> context(method);
rpc_lock().lock();
method.Invoke(context.get(), context.request(request));
EXPECT_TRUE(context.service().last_raw_writer.active());
EXPECT_EQ(OkStatus(), context.service().last_raw_writer.Finish());
EXPECT_EQ(context.output().last_packet().type(), PacketType::RESPONSE);
}
TEST(PwpbMethodUnion, Pwpb_CallsUnaryMethod) {
PW_ENCODE_PB(
pw::rpc::test::TestRequest, request, .integer = 123, .status_code = 3);
const Method& method =
std::get<2>(FakeGeneratedServiceImpl::kMethods).method();
ServerContextForTest<FakeGeneratedServiceImpl> context(method);
rpc_lock().lock();
method.Invoke(context.get(), context.request(request));
const Packet& response = context.output().last_packet();
EXPECT_EQ(response.status(), Status::Unauthenticated());
// Field 1 (encoded as 1 << 3) with 128 as the value.
constexpr std::byte expected[]{
std::byte{0x08}, std::byte{0x80}, std::byte{0x01}};
EXPECT_EQ(sizeof(expected), response.payload().size());
EXPECT_EQ(0,
std::memcmp(expected, response.payload().data(), sizeof(expected)));
EXPECT_EQ(123, context.service().last_request.integer);
EXPECT_EQ(3u, context.service().last_request.status_code);
}
TEST(PwpbMethodUnion, Pwpb_CallsServerStreamingMethod) {
PW_ENCODE_PB(
pw::rpc::test::TestRequest, request, .integer = 555, .status_code = 0);
const Method& method =
std::get<3>(FakeGeneratedServiceImpl::kMethods).method();
ServerContextForTest<FakeGeneratedServiceImpl> context(method);
rpc_lock().lock();
method.Invoke(context.get(), context.request(request));
EXPECT_EQ(555, context.service().last_request.integer);
EXPECT_TRUE(context.service().last_writer.active());
EXPECT_EQ(OkStatus(), context.service().last_writer.Finish());
EXPECT_EQ(context.output().last_packet().type(), PacketType::RESPONSE);
}
} // namespace
} // namespace pw::rpc::internal