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tests/checksum: add tests for crc8

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Taken from tests-checksum-crc16-ccitt.c
This commit is contained in:
Benjamin Valentin 2019-12-11 22:44:00 +01:00 committed by Benjamin Valentin
parent 22c2dbbbe5
commit 5d8aa6ad9a
3 changed files with 90 additions and 0 deletions
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82
tests/unittests/tests-checksum/tests-checksum-crc8.c Normal file
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@ -0,0 +1,82 @@
/*
* Copyright 2019 Benjamin Valentin <benpicco@googlemail.com>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
#include <stdint.h>
#include "embUnit/embUnit.h"
#include "checksum/crc8.h"
#include "tests-checksum.h"
#define CRC8_POLY 0x31
#define CRC8_INIT 0xff
static void test_checksum_crc8_sequence_empty(void)
{
unsigned char buf[] = "";
uint8_t expect = 0xFF;
TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
}
static void test_checksum_crc8_sequence_1a(void)
{
unsigned char buf[] = "A";
uint8_t expect = 0xA0;
TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
}
static void test_checksum_crc8_sequence_256a(void)
{
unsigned char buf[] = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
uint8_t expect = 0xF0;
TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
}
static void test_checksum_crc8_sequence_1to9(void)
{
unsigned char buf[] = "123456789";
uint8_t expect = 0xF7;
TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
}
static void test_checksum_crc8_sequence_4bytes(void)
{
unsigned char buf[] = { 0x12, 0x34, 0x56, 0x78 };
uint8_t expect = 0xE0;
TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf), CRC8_POLY, CRC8_INIT));
}
Test *tests_checksum_crc8_tests(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
/* Reference values according to
* http://srecord.sourceforge.net/crc16-ccitt.html */
new_TestFixture(test_checksum_crc8_sequence_empty),
new_TestFixture(test_checksum_crc8_sequence_1a),
new_TestFixture(test_checksum_crc8_sequence_256a),
new_TestFixture(test_checksum_crc8_sequence_1to9),
new_TestFixture(test_checksum_crc8_sequence_4bytes),
};
EMB_UNIT_TESTCALLER(checksum_crc8_tests, NULL, NULL, fixtures);
return (Test *)&checksum_crc8_tests;
}

1
tests/unittests/tests-checksum/tests-checksum.c
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@ -10,6 +10,7 @@
void tests_checksum(void)
{
TESTS_RUN(tests_checksum_crc8_tests());
TESTS_RUN(tests_checksum_crc16_ccitt_tests());
TESTS_RUN(tests_checksum_fletcher16_tests());
TESTS_RUN(tests_checksum_fletcher32_tests());

7
tests/unittests/tests-checksum/tests-checksum.h
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@ -29,6 +29,13 @@ extern "C" {
*/
void tests_checksum(void);
/**
* @brief Generates tests for checksum/crc8.h
*
* @return embUnit tests if successful, NULL if not.
*/
Test *tests_checksum_crc8_tests(void);
/**
* @brief Generates tests for checksum/crc16_ccitt.h
*