diff options
Diffstat (limited to 'pw_hdlc_lite/encoder_test.cc')
| -rw-r--r-- | pw_hdlc_lite/encoder_test.cc | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/pw_hdlc_lite/encoder_test.cc b/pw_hdlc_lite/encoder_test.cc deleted file mode 100644 index 72a66ce4c..000000000 --- a/pw_hdlc_lite/encoder_test.cc +++ /dev/null @@ -1,170 +0,0 @@ -// 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_hdlc_lite/encoder.h" - -#include <algorithm> -#include <array> -#include <cstddef> - -#include "gtest/gtest.h" -#include "pw_bytes/array.h" -#include "pw_hdlc_lite_private/protocol.h" -#include "pw_stream/memory_stream.h" - -using std::byte; - -namespace pw::hdlc_lite { -namespace { - -constexpr uint8_t kAddress = 0x7B; // 123 -constexpr byte kControl = byte{0}; - -class WriteInfoFrame : public ::testing::Test { - protected: - WriteInfoFrame() : writer_(buffer_) {} - - stream::MemoryWriter writer_; - std::array<byte, 32> buffer_; -}; - -#define EXPECT_ENCODER_WROTE(...) \ - do { \ - constexpr auto expected_data = (__VA_ARGS__); \ - EXPECT_EQ(writer_.bytes_written(), expected_data.size()); \ - EXPECT_EQ( \ - std::memcmp( \ - writer_.data(), expected_data.data(), writer_.bytes_written()), \ - 0); \ - } while (0) - -TEST_F(WriteInfoFrame, EmptyPayload) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(kAddress, std::span<byte>(), writer_)); - EXPECT_ENCODER_WROTE( - bytes::Concat(kFlag, kAddress, kControl, uint32_t{0x8D12B2C2}, kFlag)); -} - -TEST_F(WriteInfoFrame, OneBytePayload) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(kAddress, bytes::String("A"), writer_)); - EXPECT_ENCODER_WROTE(bytes::Concat( - kFlag, kAddress, kControl, 'A', uint32_t{0xA63E2FA5}, kFlag)); -} - -TEST_F(WriteInfoFrame, OneBytePayload_Escape0x7d) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(kAddress, bytes::Array<0x7d>(), writer_)); - EXPECT_ENCODER_WROTE(bytes::Concat(kFlag, - kAddress, - kControl, - kEscape, - byte{0x7d} ^ byte{0x20}, - uint32_t{0x89515322}, - kFlag)); -} - -TEST_F(WriteInfoFrame, OneBytePayload_Escape0x7E) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(kAddress, bytes::Array<0x7e>(), writer_)); - EXPECT_ENCODER_WROTE(bytes::Concat(kFlag, - kAddress, - kControl, - kEscape, - byte{0x7e} ^ byte{0x20}, - uint32_t{0x10580298}, - kFlag)); -} - -TEST_F(WriteInfoFrame, AddressNeedsEscaping) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(0x7d, bytes::String("A"), writer_)); - EXPECT_ENCODER_WROTE(bytes::Concat( - kFlag, kEscape, byte{0x5d}, kControl, 'A', uint32_t{0xA2B35317}, kFlag)); -} - -TEST_F(WriteInfoFrame, Crc32NeedsEscaping) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(kAddress, bytes::String("abcdefg"), writer_)); - - // The CRC-32 is 0x38B9FC7E, so the 0x7E must be escaped. - constexpr auto expected_crc32 = bytes::Array<0x7d, 0x5e, 0xfc, 0xb9, 0x38>(); - EXPECT_ENCODER_WROTE(bytes::Concat(kFlag, - kAddress, - kControl, - bytes::String("abcdefg"), - expected_crc32, - kFlag)); -} - -TEST_F(WriteInfoFrame, MultiplePayloads) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(kAddress, bytes::String("ABC"), writer_)); - ASSERT_EQ(Status::Ok(), - WriteInformationFrame(kAddress, bytes::String("DEF"), writer_)); - EXPECT_ENCODER_WROTE(bytes::Concat(kFlag, - kAddress, - kControl, - bytes::String("ABC"), - uint32_t{0x14E2FC99}, - kFlag, - kFlag, - kAddress, - kControl, - bytes::String("DEF"), - uint32_t{0x2D025C3A}, - kFlag)); -} - -TEST_F(WriteInfoFrame, PayloadWithNoEscapes) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame( - kAddress, bytes::String("123456789012345678901234"), writer_)); - - // Fill the memory writer's buffer. - ASSERT_EQ(writer_.bytes_written(), buffer_.size()); - - EXPECT_ENCODER_WROTE(bytes::Concat(kFlag, - kAddress, - kControl, - bytes::String("123456789012345678901234"), - uint32_t{0x50AA35EC}, - kFlag)); -} - -TEST_F(WriteInfoFrame, PayloadWithMultipleEscapes) { - ASSERT_EQ(Status::Ok(), - WriteInformationFrame( - kAddress, - bytes::Array<0x7E, 0x7B, 0x61, 0x62, 0x63, 0x7D, 0x7E>(), - writer_)); - EXPECT_ENCODER_WROTE(bytes::Concat( - kFlag, - kAddress, - kControl, - bytes:: - Array<0x7D, 0x5E, 0x7B, 0x61, 0x62, 0x63, 0x7D, 0x5D, 0x7D, 0x5E>(), - uint32_t{0x1B8D505E}, - kFlag)); -} - -TEST_F(WriteInfoFrame, WriterError) { - constexpr auto data = bytes::Initialized<sizeof(buffer_)>(0x7e); - - EXPECT_EQ(Status::ResourceExhausted(), - WriteInformationFrame(kAddress, data, writer_)); -} - -} // namespace -} // namespace pw::hdlc_lite |