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// Copyright 2020 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/raw/internal/method_union.h"
#include <array>
#include "gtest/gtest.h"
#include "pw_bytes/array.h"
#include "pw_protobuf/decoder.h"
#include "pw_protobuf/encoder.h"
#include "pw_rpc/internal/test_utils.h"
#include "pw_rpc/service.h"
#include "pw_rpc_test_protos/test.pwpb.h"
namespace pw::rpc::internal {
namespace {
namespace TestRequest = ::pw::rpc::test::TestRequest;
namespace TestResponse = ::pw::rpc::test::TestResponse;
template <typename Implementation>
class FakeGeneratedService : public Service {
public:
constexpr FakeGeneratedService(uint32_t id) : Service(id, kMethods) {}
static constexpr std::array<RawMethodUnion, 3> kMethods = {
GetRawMethodFor<&Implementation::DoNothing, MethodType::kUnary>(10u),
GetRawMethodFor<&Implementation::AddFive, MethodType::kUnary>(11u),
GetRawMethodFor<&Implementation::StartStream,
MethodType::kServerStreaming>(12u),
};
};
class FakeGeneratedServiceImpl
: public FakeGeneratedService<FakeGeneratedServiceImpl> {
public:
FakeGeneratedServiceImpl(uint32_t id) : FakeGeneratedService(id) {}
void DoNothing(ConstByteSpan, RawUnaryResponder&) {}
void AddFive(ConstByteSpan request, RawUnaryResponder& responder) {
DecodeRawTestRequest(request);
std::byte response[32] = {};
TestResponse::MemoryEncoder test_response(response);
ASSERT_EQ(OkStatus(), test_response.WriteValue(last_request.integer + 5));
ASSERT_EQ(OkStatus(),
responder.Finish(span(response).first(test_response.size()),
Status::Unauthenticated()));
}
void StartStream(ConstByteSpan request, RawServerWriter& writer) {
DecodeRawTestRequest(request);
last_writer = std::move(writer);
}
struct {
int64_t integer;
uint32_t status_code;
} last_request;
RawServerWriter last_writer;
private:
void DecodeRawTestRequest(ConstByteSpan request) {
protobuf::Decoder decoder(request);
while (decoder.Next().ok()) {
TestRequest::Fields field =
static_cast<TestRequest::Fields>(decoder.FieldNumber());
switch (field) {
case TestRequest::Fields::INTEGER:
ASSERT_EQ(OkStatus(), decoder.ReadInt64(&last_request.integer));
break;
case TestRequest::Fields::STATUS_CODE:
ASSERT_EQ(OkStatus(), decoder.ReadUint32(&last_request.status_code));
break;
}
}
}
};
TEST(RawMethodUnion, InvokesUnary) {
std::byte buffer[16];
TestRequest::MemoryEncoder test_request(buffer);
ASSERT_EQ(OkStatus(), test_request.WriteInteger(456));
ASSERT_EQ(OkStatus(), test_request.WriteStatusCode(7));
const Method& method =
std::get<1>(FakeGeneratedServiceImpl::kMethods).method();
ServerContextForTest<FakeGeneratedServiceImpl> context(method);
rpc_lock().lock();
method.Invoke(context.get(), context.request(test_request));
EXPECT_EQ(context.service().last_request.integer, 456);
EXPECT_EQ(context.service().last_request.status_code, 7u);
const Packet& response = context.output().last_packet();
EXPECT_EQ(response.status(), Status::Unauthenticated());
protobuf::Decoder decoder(response.payload());
ASSERT_TRUE(decoder.Next().ok());
int64_t value;
EXPECT_EQ(decoder.ReadInt64(&value), OkStatus());
EXPECT_EQ(value, 461);
}
TEST(RawMethodUnion, InvokesServerStreaming) {
std::byte buffer[16];
TestRequest::MemoryEncoder test_request(buffer);
ASSERT_EQ(OkStatus(), test_request.WriteInteger(777));
ASSERT_EQ(OkStatus(), test_request.WriteStatusCode(2));
const Method& method =
std::get<2>(FakeGeneratedServiceImpl::kMethods).method();
ServerContextForTest<FakeGeneratedServiceImpl> context(method);
rpc_lock().lock();
method.Invoke(context.get(), context.request(test_request));
EXPECT_EQ(0u, context.output().total_packets());
EXPECT_EQ(777, context.service().last_request.integer);
EXPECT_EQ(2u, context.service().last_request.status_code);
EXPECT_TRUE(context.service().last_writer.active());
EXPECT_EQ(OkStatus(), context.service().last_writer.Finish());
}
} // namespace
} // namespace pw::rpc::internal