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83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* Copyright 2019 Benjamin Valentin <benpicco@googlemail.com>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#include <stdint.h>
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#include "embUnit/embUnit.h"
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#include "checksum/crc8.h"
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#include "tests-checksum.h"
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#define CRC8_POLY 0x31
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#define CRC8_INIT 0xff
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static void test_checksum_crc8_sequence_empty(void)
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{
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unsigned char buf[] = "";
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uint8_t expect = 0xFF;
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TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
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}
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static void test_checksum_crc8_sequence_1a(void)
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{
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unsigned char buf[] = "A";
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uint8_t expect = 0xA0;
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TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
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}
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static void test_checksum_crc8_sequence_256a(void)
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{
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unsigned char buf[] = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
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uint8_t expect = 0xF0;
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TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
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}
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static void test_checksum_crc8_sequence_1to9(void)
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{
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unsigned char buf[] = "123456789";
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uint8_t expect = 0xF7;
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TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf) - 1, CRC8_POLY, CRC8_INIT));
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}
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static void test_checksum_crc8_sequence_4bytes(void)
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{
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unsigned char buf[] = { 0x12, 0x34, 0x56, 0x78 };
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uint8_t expect = 0xE0;
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TEST_ASSERT_EQUAL_INT(expect, crc8(buf, sizeof(buf), CRC8_POLY, CRC8_INIT));
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}
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Test *tests_checksum_crc8_tests(void)
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{
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EMB_UNIT_TESTFIXTURES(fixtures) {
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/* Reference values according to
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* http://srecord.sourceforge.net/crc16-ccitt.html */
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new_TestFixture(test_checksum_crc8_sequence_empty),
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new_TestFixture(test_checksum_crc8_sequence_1a),
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new_TestFixture(test_checksum_crc8_sequence_256a),
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new_TestFixture(test_checksum_crc8_sequence_1to9),
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new_TestFixture(test_checksum_crc8_sequence_4bytes),
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};
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EMB_UNIT_TESTCALLER(checksum_crc8_tests, NULL, NULL, fixtures);
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return (Test *)&checksum_crc8_tests;
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}
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