| // Copyright 2023 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_transport/internal/packet_buffer_queue.h" |
| |
| #include <array> |
| |
| #include "pw_bytes/span.h" |
| #include "pw_result/result.h" |
| #include "pw_status/status.h" |
| #include "pw_unit_test/framework.h" |
| |
| namespace pw::rpc::internal { |
| namespace { |
| |
| constexpr size_t kMaxPacketSize = 256; |
| |
| TEST(PacketBufferQueueTest, CopyAndGetPacket) { |
| PacketBufferQueue<kMaxPacketSize>::PacketBuffer packet_buffer = {}; |
| std::array<std::byte, 42> input{}; |
| std::fill(input.begin(), input.end(), std::byte{0x42}); |
| |
| auto packet = packet_buffer.GetPacket(); |
| ASSERT_EQ(packet.status(), OkStatus()); |
| EXPECT_EQ(packet->size(), 0ul); |
| |
| ASSERT_EQ(packet_buffer.CopyPacket(input), OkStatus()); |
| |
| packet = packet_buffer.GetPacket(); |
| ASSERT_EQ(packet.status(), OkStatus()); |
| EXPECT_EQ(packet->size(), 42ul); |
| |
| EXPECT_TRUE(std::equal(input.begin(), input.end(), packet->begin())); |
| |
| std::array<std::byte, 300> long_input{}; |
| EXPECT_EQ(packet_buffer.CopyPacket(long_input), Status::ResourceExhausted()); |
| } |
| |
| TEST(PacketBufferQueueTest, PopWhenEmptyFails) { |
| PacketBufferQueue<kMaxPacketSize> queue; |
| EXPECT_EQ(queue.Pop().status(), Status::ResourceExhausted()); |
| } |
| |
| TEST(PacketBufferQueueTest, PopAllSucceeds) { |
| constexpr auto kPacketQueueSize = 3; |
| |
| std::array<PacketBufferQueue<kMaxPacketSize>::PacketBuffer, kPacketQueueSize> |
| packets; |
| PacketBufferQueue<kMaxPacketSize> queue(packets); |
| |
| for (size_t i = 0; i < kPacketQueueSize; ++i) { |
| EXPECT_EQ(queue.Pop().status(), OkStatus()); |
| } |
| |
| EXPECT_EQ(queue.Pop().status(), Status::ResourceExhausted()); |
| } |
| |
| TEST(PacketQueueTest, PushPopSucceeds) { |
| PacketBufferQueue<kMaxPacketSize>::PacketBuffer packet_buffer; |
| PacketBufferQueue<kMaxPacketSize> queue; |
| |
| pw::Result<PacketBufferQueue<kMaxPacketSize>::PacketBuffer*> |
| popped_packet_buffer = queue.Pop(); |
| EXPECT_EQ(popped_packet_buffer.status(), Status::ResourceExhausted()); |
| |
| queue.Push(packet_buffer); |
| popped_packet_buffer = queue.Pop(); |
| EXPECT_EQ(popped_packet_buffer.status(), OkStatus()); |
| } |
| |
| } // namespace |
| } // namespace pw::rpc::internal |