| // Copyright 2021 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 "gtest/gtest.h" |
| #include "pw_bytes/array.h" |
| #include "pw_protobuf/streaming_encoder.h" |
| |
| namespace pw::protobuf { |
| namespace { |
| |
| TEST(Encoder, SizeTypeIsConfigured) { |
| static_assert(config::kMaxVarintSize == sizeof(uint8_t)); |
| } |
| |
| TEST(Encoder, NestedWriteSmallerThanVarintSize) { |
| std::array<std::byte, 256> buffer; |
| |
| // TODO(pwbug/384): Use Encoder when MemoryEncoder is renamed. |
| MemoryEncoder encoder(buffer); |
| |
| StreamingEncoder nested = encoder.GetNestedEncoder(1); |
| // 1 byte key + 1 byte size + 125 byte value = 127 byte nested length. |
| EXPECT_EQ(nested.WriteBytes(2, bytes::Initialized<125>(0xaa)), OkStatus()); |
| nested.Finalize(); |
| |
| EXPECT_EQ(encoder.status(), OkStatus()); |
| } |
| |
| TEST(Encoder, NestedWriteLargerThanVarintSizeReturnsResourceExhausted) { |
| std::array<std::byte, 256> buffer; |
| |
| // TODO(pwbug/384): Use Encoder when MemoryEncoder is renamed. |
| MemoryEncoder encoder(buffer); |
| |
| // Try to write a larger nested message than the max nested varint value. |
| StreamingEncoder nested = encoder.GetNestedEncoder(1); |
| // 1 byte key + 1 byte size + 126 byte value = 128 byte nested length. |
| EXPECT_EQ(nested.WriteBytes(2, bytes::Initialized<126>(0xaa)), |
| Status::ResourceExhausted()); |
| EXPECT_EQ(nested.WriteUint32(3, 42), Status::ResourceExhausted()); |
| nested.Finalize(); |
| |
| EXPECT_EQ(encoder.status(), Status::ResourceExhausted()); |
| } |
| |
| TEST(Encoder, NestedMessageLargerThanVarintSizeReturnsResourceExhausted) { |
| std::array<std::byte, 256> buffer; |
| |
| // TODO(pwbug/384): Use Encoder when MemoryEncoder is renamed. |
| MemoryEncoder encoder(buffer); |
| |
| // Try to write a larger nested message than the max nested varint value as |
| // multiple smaller writes. |
| StreamingEncoder nested = encoder.GetNestedEncoder(1); |
| EXPECT_EQ(nested.WriteBytes(2, bytes::Initialized<60>(0xaa)), OkStatus()); |
| EXPECT_EQ(nested.WriteBytes(3, bytes::Initialized<60>(0xaa)), OkStatus()); |
| EXPECT_EQ(nested.WriteBytes(4, bytes::Initialized<60>(0xaa)), |
| Status::ResourceExhausted()); |
| nested.Finalize(); |
| |
| EXPECT_EQ(encoder.status(), Status::ResourceExhausted()); |
| } |
| |
| } // namespace |
| } // namespace pw::protobuf |