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Diffstat (limited to 'quantum/serial_link/tests/byte_stuffer_tests.cpp')
| -rw-r--r-- | quantum/serial_link/tests/byte_stuffer_tests.cpp | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/quantum/serial_link/tests/byte_stuffer_tests.cpp b/quantum/serial_link/tests/byte_stuffer_tests.cpp new file mode 100644 index 000000000..ff49d727b --- /dev/null +++ b/quantum/serial_link/tests/byte_stuffer_tests.cpp @@ -0,0 +1,483 @@ +/* +The MIT License (MIT) + +Copyright (c) 2016 Fred Sundvik + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +*/ + +#include "gtest/gtest.h" +#include "gmock/gmock.h" +#include <vector> +#include <algorithm> +extern "C" { +#include "serial_link/protocol/byte_stuffer.h" +#include "serial_link/protocol/frame_validator.h" +#include "serial_link/protocol/physical.h" +} + +using testing::_; +using testing::ElementsAreArray; +using testing::Args; + +class ByteStuffer : public ::testing::Test{ +public: + ByteStuffer() { + Instance = this; + init_byte_stuffer(); + } + + ~ByteStuffer() { + Instance = nullptr; + } + + MOCK_METHOD3(validator_recv_frame, void (uint8_t link, uint8_t* data, uint16_t size)); + + void send_data(uint8_t link, const uint8_t* data, uint16_t size) { + std::copy(data, data + size, std::back_inserter(sent_data)); + } + std::vector<uint8_t> sent_data; + + static ByteStuffer* Instance; +}; + +ByteStuffer* ByteStuffer::Instance = nullptr; + +extern "C" { + void validator_recv_frame(uint8_t link, uint8_t* data, uint16_t size) { + ByteStuffer::Instance->validator_recv_frame(link, data, size); + } + + void send_data(uint8_t link, const uint8_t* data, uint16_t size) { + ByteStuffer::Instance->send_data(link, data, size); + } +} + +TEST_F(ByteStuffer, receives_no_frame_for_a_single_zero_byte) { + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .Times(0); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_no_frame_for_a_single_FF_byte) { + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .Times(0); + byte_stuffer_recv_byte(0, 0xFF); +} + +TEST_F(ByteStuffer, receives_no_frame_for_a_single_random_byte) { + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .Times(0); + byte_stuffer_recv_byte(0, 0x4A); +} + +TEST_F(ByteStuffer, receives_no_frame_for_a_zero_length_frame) { + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .Times(0); + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_single_byte_valid_frame) { + uint8_t expected[] = {0x37}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 2); + byte_stuffer_recv_byte(0, 0x37); + byte_stuffer_recv_byte(0, 0); +} +TEST_F(ByteStuffer, receives_three_bytes_valid_frame) { + uint8_t expected[] = {0x37, 0x99, 0xFF}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 4); + byte_stuffer_recv_byte(0, 0x37); + byte_stuffer_recv_byte(0, 0x99); + byte_stuffer_recv_byte(0, 0xFF); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_single_zero_valid_frame) { + uint8_t expected[] = {0}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_valid_frame_with_zeroes) { + uint8_t expected[] = {5, 0, 3, 0}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 2); + byte_stuffer_recv_byte(0, 5); + byte_stuffer_recv_byte(0, 2); + byte_stuffer_recv_byte(0, 3); + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 0); +} + + +TEST_F(ByteStuffer, receives_two_valid_frames) { + uint8_t expected1[] = {5, 0}; + uint8_t expected2[] = {3}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected1))); + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected2))); + byte_stuffer_recv_byte(1, 2); + byte_stuffer_recv_byte(1, 5); + byte_stuffer_recv_byte(1, 1); + byte_stuffer_recv_byte(1, 0); + byte_stuffer_recv_byte(1, 2); + byte_stuffer_recv_byte(1, 3); + byte_stuffer_recv_byte(1, 0); +} + +TEST_F(ByteStuffer, receives_valid_frame_after_unexpected_zero) { + uint8_t expected[] = {5, 7}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(1, 3); + byte_stuffer_recv_byte(1, 1); + byte_stuffer_recv_byte(1, 0); + byte_stuffer_recv_byte(1, 3); + byte_stuffer_recv_byte(1, 5); + byte_stuffer_recv_byte(1, 7); + byte_stuffer_recv_byte(1, 0); +} + +TEST_F(ByteStuffer, receives_valid_frame_after_unexpected_non_zero) { + uint8_t expected[] = {5, 7}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 2); + byte_stuffer_recv_byte(0, 9); + byte_stuffer_recv_byte(0, 4); // This should have been zero + byte_stuffer_recv_byte(0, 0); + byte_stuffer_recv_byte(0, 3); + byte_stuffer_recv_byte(0, 5); + byte_stuffer_recv_byte(0, 7); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_a_valid_frame_with_over254_non_zeroes_and_then_end_of_frame) { + uint8_t expected[254]; + int i; + for (i=0;i<254;i++) { + expected[i] = i + 1; + } + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 0xFF); + for (i=0;i<254;i++) { + byte_stuffer_recv_byte(0, i+1); + } + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_a_valid_frame_with_over254_non_zeroes_next_byte_is_non_zero) { + uint8_t expected[255]; + int i; + for (i=0;i<254;i++) { + expected[i] = i + 1; + } + expected[254] = 7; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 0xFF); + for (i=0;i<254;i++) { + byte_stuffer_recv_byte(0, i+1); + } + byte_stuffer_recv_byte(0, 2); + byte_stuffer_recv_byte(0, 7); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_a_valid_frame_with_over254_non_zeroes_next_byte_is_zero) { + uint8_t expected[255]; + int i; + for (i=0;i<254;i++) { + expected[i] = i + 1; + } + expected[254] = 0; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 0xFF); + for (i=0;i<254;i++) { + byte_stuffer_recv_byte(0, i+1); + } + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_two_long_frames_and_some_more) { + uint8_t expected[515]; + int i; + int j; + for (j=0;j<2;j++) { + for (i=0;i<254;i++) { + expected[i+254*j] = i + 1; + } + } + for (i=0;i<7;i++) { + expected[254*2+i] = i + 1; + } + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + byte_stuffer_recv_byte(0, 0xFF); + for (i=0;i<254;i++) { + byte_stuffer_recv_byte(0, i+1); + } + byte_stuffer_recv_byte(0, 0xFF); + for (i=0;i<254;i++) { + byte_stuffer_recv_byte(0, i+1); + } + byte_stuffer_recv_byte(0, 8); + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 2); + byte_stuffer_recv_byte(0, 3); + byte_stuffer_recv_byte(0, 4); + byte_stuffer_recv_byte(0, 5); + byte_stuffer_recv_byte(0, 6); + byte_stuffer_recv_byte(0, 7); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, receives_an_all_zeros_frame_that_is_maximum_size) { + uint8_t expected[MAX_FRAME_SIZE] = {}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + int i; + byte_stuffer_recv_byte(0, 1); + for(i=0;i<MAX_FRAME_SIZE;i++) { + byte_stuffer_recv_byte(0, 1); + } + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, doesnt_recv_a_frame_thats_too_long_all_zeroes) { + uint8_t expected[1] = {0}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .Times(0); + int i; + byte_stuffer_recv_byte(0, 1); + for(i=0;i<MAX_FRAME_SIZE;i++) { + byte_stuffer_recv_byte(0, 1); + } + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, received_frame_is_aborted_when_its_too_long) { + uint8_t expected[1] = {1}; + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(expected))); + int i; + byte_stuffer_recv_byte(0, 1); + for(i=0;i<MAX_FRAME_SIZE;i++) { + byte_stuffer_recv_byte(0, 1); + } + byte_stuffer_recv_byte(0, 2); + byte_stuffer_recv_byte(0, 1); + byte_stuffer_recv_byte(0, 0); +} + +TEST_F(ByteStuffer, does_nothing_when_sending_zero_size_frame) { + EXPECT_EQ(sent_data.size(), 0); + byte_stuffer_send_frame(0, NULL, 0); +} + +TEST_F(ByteStuffer, send_one_byte_frame) { + uint8_t data[] = {5}; + byte_stuffer_send_frame(1, data, 1); + uint8_t expected[] = {2, 5, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_two_byte_frame) { + uint8_t data[] = {5, 0x77}; + byte_stuffer_send_frame(0, data, 2); + uint8_t expected[] = {3, 5, 0x77, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_one_byte_frame_with_zero) { + uint8_t data[] = {0}; + byte_stuffer_send_frame(0, data, 1); + uint8_t expected[] = {1, 1, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_two_byte_frame_starting_with_zero) { + uint8_t data[] = {0, 9}; + byte_stuffer_send_frame(1, data, 2); + uint8_t expected[] = {1, 2, 9, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_two_byte_frame_starting_with_non_zero) { + uint8_t data[] = {9, 0}; + byte_stuffer_send_frame(1, data, 2); + uint8_t expected[] = {2, 9, 1, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_three_byte_frame_zero_in_the_middle) { + uint8_t data[] = {9, 0, 0x68}; + byte_stuffer_send_frame(0, data, 3); + uint8_t expected[] = {2, 9, 2, 0x68, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_three_byte_frame_data_in_the_middle) { + uint8_t data[] = {0, 0x55, 0}; + byte_stuffer_send_frame(0, data, 3); + uint8_t expected[] = {1, 2, 0x55, 1, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_three_byte_frame_with_all_zeroes) { + uint8_t data[] = {0, 0, 0}; + byte_stuffer_send_frame(0, data, 3); + uint8_t expected[] = {1, 1, 1, 1, 0}; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_frame_with_254_non_zeroes) { + uint8_t data[254]; + int i; + for(i=0;i<254;i++) { + data[i] = i + 1; + } + byte_stuffer_send_frame(0, data, 254); + uint8_t expected[256]; + expected[0] = 0xFF; + for(i=1;i<255;i++) { + expected[i] = i; + } + expected[255] = 0; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_frame_with_255_non_zeroes) { + uint8_t data[255]; + int i; + for(i=0;i<255;i++) { + data[i] = i + 1; + } + byte_stuffer_send_frame(0, data, 255); + uint8_t expected[258]; + expected[0] = 0xFF; + for(i=1;i<255;i++) { + expected[i] = i; + } + expected[255] = 2; + expected[256] = 255; + expected[257] = 0; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_frame_with_254_non_zeroes_followed_by_zero) { + uint8_t data[255]; + int i; + for(i=0;i<254;i++) { + data[i] = i + 1; + } + data[254] = 0; + byte_stuffer_send_frame(0, data, 255); + uint8_t expected[258]; + expected[0] = 0xFF; + for(i=1;i<255;i++) { + expected[i] = i; + } + expected[255] = 1; + expected[256] = 1; + expected[257] = 0; + EXPECT_THAT(sent_data, ElementsAreArray(expected)); +} + +TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_small_packet) { + uint8_t original_data[] = { 1, 2, 3}; + byte_stuffer_send_frame(0, original_data, sizeof(original_data)); + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(original_data))); + int i; + for(auto& d : sent_data) { + byte_stuffer_recv_byte(1, d); + } +} + +TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_small_packet_with_zeros) { + uint8_t original_data[] = { 1, 0, 3, 0, 0, 9}; + byte_stuffer_send_frame(1, original_data, sizeof(original_data)); + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(original_data))); + int i; + for(auto& d : sent_data) { + byte_stuffer_recv_byte(1, d); + } +} + +TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_254_bytes) { + uint8_t original_data[254]; + int i; + for(i=0;i<254;i++) { + original_data[i] = i + 1; + } + byte_stuffer_send_frame(0, original_data, sizeof(original_data)); + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(original_data))); + for(auto& d : sent_data) { + byte_stuffer_recv_byte(1, d); + } +} + +TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_256_bytes) { + uint8_t original_data[256]; + int i; + for(i=0;i<254;i++) { + original_data[i] = i + 1; + } + original_data[254] = 22; + original_data[255] = 23; + byte_stuffer_send_frame(0, original_data, sizeof(original_data)); + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(original_data))); + for(auto& d : sent_data) { + byte_stuffer_recv_byte(1, d); + } +} + +TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_254_bytes_and_then_zero) { + uint8_t original_data[255]; + int i; + for(i=0;i<254;i++) { + original_data[i] = i + 1; + } + original_data[254] = 0; + byte_stuffer_send_frame(0, original_data, sizeof(original_data)); + EXPECT_CALL(*this, validator_recv_frame(_, _, _)) + .With(Args<1, 2>(ElementsAreArray(original_data))); + for(auto& d : sent_data) { + byte_stuffer_recv_byte(1, d); + } +} |