summaryrefslogtreecommitdiffstats
path: root/quantum/serial_link/tests/byte_stuffer_tests.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'quantum/serial_link/tests/byte_stuffer_tests.cpp')
-rw-r--r--quantum/serial_link/tests/byte_stuffer_tests.cpp483
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 0000000000..ff49d727bb
--- /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);
+ }
+}