Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 1 | // Copyright 2021 The Pigweed Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 4 | // use this file except in compliance with the License. You may obtain a copy of |
| 5 | // the License at |
| 6 | // |
| 7 | // https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 11 | // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | // License for the specific language governing permissions and limitations under |
| 13 | // the License. |
| 14 | |
| 15 | #include "gtest/gtest.h" |
| 16 | #include "pw_bytes/array.h" |
Armando Montanez | a095fc2 | 2021-05-21 12:27:11 -0700 | [diff] [blame] | 17 | #include "pw_protobuf/encoder.h" |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 18 | |
| 19 | namespace pw::protobuf { |
| 20 | namespace { |
| 21 | |
| 22 | TEST(Encoder, SizeTypeIsConfigured) { |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 23 | static_assert(config::kMaxVarintSize == sizeof(uint8_t)); |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 24 | } |
| 25 | |
| 26 | TEST(Encoder, NestedWriteSmallerThanVarintSize) { |
| 27 | std::array<std::byte, 256> buffer; |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 28 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 29 | MemoryEncoder encoder(buffer); |
| 30 | |
Ewout van Bekkum | 011a4d5 | 2021-08-20 20:19:52 -0700 | [diff] [blame] | 31 | { |
| 32 | StreamEncoder nested = encoder.GetNestedEncoder(1); |
| 33 | // 1 byte key + 1 byte size + 125 byte value = 127 byte nested length. |
| 34 | EXPECT_EQ(nested.WriteBytes(2, bytes::Initialized<125>(0xaa)), OkStatus()); |
| 35 | } |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 36 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 37 | EXPECT_EQ(encoder.status(), OkStatus()); |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 38 | } |
| 39 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 40 | TEST(Encoder, NestedWriteLargerThanVarintSizeReturnsResourceExhausted) { |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 41 | std::array<std::byte, 256> buffer; |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 42 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 43 | MemoryEncoder encoder(buffer); |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 44 | |
Ewout van Bekkum | 011a4d5 | 2021-08-20 20:19:52 -0700 | [diff] [blame] | 45 | { |
| 46 | // Try to write a larger nested message than the max nested varint value. |
| 47 | StreamEncoder nested = encoder.GetNestedEncoder(1); |
| 48 | // 1 byte key + 1 byte size + 126 byte value = 128 byte nested length. |
| 49 | EXPECT_EQ(nested.WriteBytes(2, bytes::Initialized<126>(0xaa)), |
| 50 | Status::ResourceExhausted()); |
| 51 | EXPECT_EQ(nested.WriteUint32(3, 42), Status::ResourceExhausted()); |
| 52 | } |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 53 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 54 | EXPECT_EQ(encoder.status(), Status::ResourceExhausted()); |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 55 | } |
| 56 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 57 | TEST(Encoder, NestedMessageLargerThanVarintSizeReturnsResourceExhausted) { |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 58 | std::array<std::byte, 256> buffer; |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 59 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 60 | MemoryEncoder encoder(buffer); |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 61 | |
Ewout van Bekkum | 011a4d5 | 2021-08-20 20:19:52 -0700 | [diff] [blame] | 62 | { |
| 63 | // Try to write a larger nested message than the max nested varint value as |
| 64 | // multiple smaller writes. |
| 65 | StreamEncoder nested = encoder.GetNestedEncoder(1); |
| 66 | EXPECT_EQ(nested.WriteBytes(2, bytes::Initialized<60>(0xaa)), OkStatus()); |
| 67 | EXPECT_EQ(nested.WriteBytes(3, bytes::Initialized<60>(0xaa)), OkStatus()); |
| 68 | EXPECT_EQ(nested.WriteBytes(4, bytes::Initialized<60>(0xaa)), |
| 69 | Status::ResourceExhausted()); |
| 70 | } |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 71 | |
Armando Montanez | 328a051 | 2021-05-21 13:37:58 -0700 | [diff] [blame] | 72 | EXPECT_EQ(encoder.status(), Status::ResourceExhausted()); |
Alexei Frolov | f9ae189 | 2021-04-01 18:24:27 -0700 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | } // namespace |
| 76 | } // namespace pw::protobuf |