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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/client_server.h"
#include "gtest/gtest.h"
#include "pw_rpc/internal/packet.h"
#include "pw_rpc/internal/test_utils.h"
#include "pw_rpc/raw/fake_channel_output.h"
#include "pw_rpc/raw/internal/method_union.h"
#include "pw_rpc/service.h"
namespace pw::rpc::internal {
namespace {
constexpr uint32_t kFakeChannelId = 1;
constexpr uint32_t kFakeServiceId = 3;
constexpr uint32_t kFakeMethodId = 10;
RawFakeChannelOutput<1> output;
rpc::Channel channels[] = {Channel::Create<kFakeChannelId>(&output)};
StatusWithSize FakeMethod(ConstByteSpan, ByteSpan) {
return StatusWithSize::Unimplemented();
}
class FakeService : public Service {
public:
FakeService(uint32_t id) : Service(id, kMethods) {}
static constexpr std::array<RawMethodUnion, 1> kMethods = {
RawMethod::SynchronousUnary<FakeMethod>(kFakeMethodId),
};
};
FakeService service(kFakeServiceId);
TEST(ClientServer, ProcessPacket_CallsServer) {
ClientServer client_server(channels);
client_server.server().RegisterService(service);
Packet packet(
PacketType::REQUEST, kFakeChannelId, kFakeServiceId, kFakeMethodId);
std::array<std::byte, 32> buffer;
Result result = packet.Encode(buffer);
EXPECT_EQ(result.status(), OkStatus());
EXPECT_EQ(client_server.ProcessPacket(result.value(), output), OkStatus());
}
TEST(ClientServer, ProcessPacket_CallsClient) {
ClientServer client_server(channels);
client_server.server().RegisterService(service);
// Same packet as above, but type RESPONSE will skip the server and call into
// the client.
Packet packet(
PacketType::RESPONSE, kFakeChannelId, kFakeServiceId, kFakeMethodId);
std::array<std::byte, 32> buffer;
Result result = packet.Encode(buffer);
EXPECT_EQ(result.status(), OkStatus());
// No calls are registered on the client, so nothing should happen. The
// ProcessPacket call still returns OK since the client handled it.
EXPECT_EQ(client_server.ProcessPacket(result.value(), output), OkStatus());
}
TEST(ClientServer, ProcessPacket_BadData) {
ClientServer client_server(channels);
EXPECT_EQ(client_server.ProcessPacket({}, output), Status::DataLoss());
}
} // namespace
} // namespace pw::rpc::internal
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