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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.h"
#include "gtest/gtest.h"
#include "pw_rpc/internal/packet.h"
#include "pw_rpc_private/internal_test_utils.h"
namespace pw::rpc {
namespace {
using internal::BaseClientCall;
using internal::Packet;
using internal::PacketType;
class TestClientCall : public BaseClientCall {
public:
constexpr TestClientCall(Channel* channel,
uint32_t service_id,
uint32_t method_id)
: BaseClientCall(channel, service_id, method_id, ProcessPacket) {}
static void ProcessPacket(BaseClientCall& call, const Packet& packet) {
static_cast<TestClientCall&>(call).HandlePacket(packet);
}
void HandlePacket(const Packet&) { invoked_ = true; }
constexpr bool invoked() const { return invoked_; }
private:
bool invoked_ = false;
};
TEST(Client, ProcessPacket_InvokesARegisteredClientCall) {
ClientContextForTest context;
TestClientCall call(
&context.channel(), context.service_id(), context.method_id());
EXPECT_EQ(context.SendResponse(OkStatus(), {}), OkStatus());
EXPECT_TRUE(call.invoked());
}
TEST(Client, ProcessPacket_SendsClientErrorOnUnregisteredCall) {
ClientContextForTest context;
EXPECT_EQ(context.SendResponse(OkStatus(), {}), Status::NotFound());
ASSERT_EQ(context.output().packet_count(), 1u);
const Packet& packet = context.output().sent_packet();
EXPECT_EQ(packet.type(), PacketType::CLIENT_ERROR);
EXPECT_EQ(packet.channel_id(), context.channel_id());
EXPECT_EQ(packet.service_id(), context.service_id());
EXPECT_EQ(packet.method_id(), context.method_id());
EXPECT_TRUE(packet.payload().empty());
EXPECT_EQ(packet.status(), Status::FailedPrecondition());
}
TEST(Client, ProcessPacket_ReturnsDataLossOnBadPacket) {
ClientContextForTest context;
constexpr std::byte bad_packet[]{
std::byte{0xab}, std::byte{0xcd}, std::byte{0xef}};
EXPECT_EQ(context.client().ProcessPacket(bad_packet), Status::DataLoss());
}
TEST(Client, ProcessPacket_ReturnsInvalidArgumentOnServerPacket) {
ClientContextForTest context;
EXPECT_EQ(context.SendPacket(PacketType::REQUEST), Status::InvalidArgument());
EXPECT_EQ(context.SendPacket(PacketType::CANCEL_SERVER_STREAM),
Status::InvalidArgument());
}
} // namespace
} // namespace pw::rpc