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128 lines
4.0 KiB
128 lines
4.0 KiB
// Copyright 2020 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_rpc/channel.h"
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#include "gtest/gtest.h"
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#include "pw_rpc/internal/packet.h"
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#include "pw_rpc_private/internal_test_utils.h"
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namespace pw::rpc::internal {
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namespace {
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using std::byte;
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TEST(ChannelOutput, Name) {
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class NameTester : public ChannelOutput {
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public:
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NameTester(const char* name) : ChannelOutput(name) {}
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std::span<std::byte> AcquireBuffer() override { return {}; }
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Status SendAndReleaseBuffer(std::span<const std::byte>) override {
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return OkStatus();
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}
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};
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EXPECT_STREQ("hello_world", NameTester("hello_world").name());
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EXPECT_EQ(nullptr, NameTester(nullptr).name());
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}
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constexpr Packet kTestPacket(PacketType::RESPONSE, 1, 42, 100);
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const size_t kReservedSize = 2 /* type */ + 2 /* channel */ + 5 /* service */ +
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5 /* method */ + 2 /* payload key */ +
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2 /* status */;
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enum class ChannelId {
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kOne = 1,
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kTwo = 2,
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};
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TEST(Channel, Create_FromEnum) {
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constexpr rpc::Channel one = Channel::Create<ChannelId::kOne>(nullptr);
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constexpr rpc::Channel two = Channel::Create<ChannelId::kTwo>(nullptr);
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static_assert(one.id() == 1);
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static_assert(two.id() == 2);
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}
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TEST(Channel, TestPacket_ReservedSizeMatchesMinEncodedSizeBytes) {
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EXPECT_EQ(kReservedSize, kTestPacket.MinEncodedSizeBytes());
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}
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TEST(Channel, OutputBuffer_EmptyBuffer) {
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TestOutput<0> output;
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internal::Channel channel(100, &output);
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Channel::OutputBuffer buffer = channel.AcquireBuffer();
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EXPECT_TRUE(buffer.payload(kTestPacket).empty());
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}
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TEST(Channel, OutputBuffer_TooSmall) {
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TestOutput<kReservedSize - 1> output;
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internal::Channel channel(100, &output);
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Channel::OutputBuffer output_buffer = channel.AcquireBuffer();
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EXPECT_TRUE(output_buffer.payload(kTestPacket).empty());
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EXPECT_EQ(Status::Internal(), channel.Send(output_buffer, kTestPacket));
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}
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TEST(Channel, OutputBuffer_ExactFit) {
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TestOutput<kReservedSize> output;
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internal::Channel channel(100, &output);
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Channel::OutputBuffer output_buffer(channel.AcquireBuffer());
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const std::span payload = output_buffer.payload(kTestPacket);
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EXPECT_EQ(payload.size(), output.buffer().size() - kReservedSize);
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EXPECT_EQ(output.buffer().data() + kReservedSize, payload.data());
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EXPECT_EQ(OkStatus(), channel.Send(output_buffer, kTestPacket));
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}
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TEST(Channel, OutputBuffer_PayloadDoesNotFit_ReportsError) {
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TestOutput<kReservedSize> output;
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internal::Channel channel(100, &output);
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Packet packet = kTestPacket;
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byte data[1] = {};
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packet.set_payload(data);
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EXPECT_EQ(Status::Internal(), channel.Send(packet));
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}
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TEST(Channel, OutputBuffer_ExtraRoom) {
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TestOutput<kReservedSize * 3> output;
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internal::Channel channel(100, &output);
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Channel::OutputBuffer output_buffer = channel.AcquireBuffer();
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const std::span payload = output_buffer.payload(kTestPacket);
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EXPECT_EQ(payload.size(), output.buffer().size() - kReservedSize);
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EXPECT_EQ(output.buffer().data() + kReservedSize, payload.data());
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EXPECT_EQ(OkStatus(), channel.Send(output_buffer, kTestPacket));
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}
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TEST(Channel, OutputBuffer_ReturnsStatusFromChannelOutputSend) {
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TestOutput<kReservedSize * 3> output;
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internal::Channel channel(100, &output);
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Channel::OutputBuffer output_buffer = channel.AcquireBuffer();
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output.set_send_status(Status::Aborted());
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EXPECT_EQ(Status::Aborted(), channel.Send(output_buffer, kTestPacket));
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}
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} // namespace
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} // namespace pw::rpc::internal
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