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https://github.com/RIOT-OS/RIOT.git
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126 lines
4.9 KiB
C
126 lines
4.9 KiB
C
/*
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* Copyright 2025 Bennet Hattesen <bennet.blischke@haw-hamburg.de>
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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/crc16_ccitt.h"
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#include "tests-checksum.h"
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static int calc_and_compare_crc16_ccitt_fcs_with_update(const unsigned char *buf,
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size_t len, size_t split,
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uint16_t expected)
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{
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uint16_t result = crc16_ccitt_fcs_start(buf, split);
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result = crc16_ccitt_fcs_finish(result, buf + split, len - split);
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return result == expected;
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}
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static int calc_and_compare_crc16_ccitt_fcs(const unsigned char *buf, size_t len,
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uint16_t expected)
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{
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uint16_t result = crc16_ccitt_fcs_calc(buf, len);
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return result == expected;
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}
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static void test_checksum_crc16_ccitt_fcs_sequence_empty(void)
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{
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unsigned char buf[] = "";
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uint16_t expect = 0x0000;
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs(buf, sizeof(buf) - 1, expect));
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs_with_update(buf, sizeof(buf) - 1,
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(sizeof(buf) - 1) / 2, expect));
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}
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static void test_checksum_crc16_ccitt_fcs_sequence_1a(void)
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{
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unsigned char buf[] = "A";
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uint16_t expect = 0xA3F5;
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs(buf, sizeof(buf) - 1, expect));
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs_with_update(buf, sizeof(buf) - 1,
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(sizeof(buf) - 1) / 2, expect));
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}
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static void test_checksum_crc16_ccitt_fcs_sequence_256a(void)
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{
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unsigned char buf[] = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
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"AAAA";
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uint16_t expect = 0x0F9F;
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs(buf, sizeof(buf) - 1, expect));
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs_with_update(buf, sizeof(buf) - 1,
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(sizeof(buf) - 1) / 2, expect));
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}
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static void test_checksum_crc16_ccitt_fcs_sequence_1to9(void)
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{
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unsigned char buf[] = "123456789";
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uint16_t expect = 0x906E;
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs(buf, sizeof(buf) - 1, expect));
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs_with_update(buf, sizeof(buf)
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- 1, (sizeof(buf) - 1) / 2,
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expect));
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}
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static void test_checksum_crc16_ccitt_fcs_sequence_4bytes(void)
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{
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unsigned char buf[] = { 0x12, 0x34, 0x56, 0x78 };
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uint16_t expect = 0x9B2E;
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs(buf, sizeof(buf), expect));
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs_with_update(buf, sizeof(buf),
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sizeof(buf) / 2, expect));
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}
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static void test_checksum_crc16_ccitt_fcs_sequence_6bytes(void)
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{
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unsigned char buf[] = { 0x00, 0x01, 0x02, 0x03 };
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uint16_t expect = 0xA729;
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs(buf, sizeof(buf), expect));
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs_with_update(buf, sizeof(buf),
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sizeof(buf) / 2, expect));
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unsigned char buf2[] = { 0x00, 0x01, 0x02, 0x03, 0x29, 0xA7 };
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uint16_t expect2 = 0x0F47;
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// Residue test
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TEST_ASSERT(crc16_ccitt_fcs_start(buf2, sizeof(buf2)) == 0xF0B8);
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs(buf2, sizeof(buf2), expect2));
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TEST_ASSERT(calc_and_compare_crc16_ccitt_fcs_with_update(buf2, sizeof(buf2),
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sizeof(buf2) / 2, expect2));
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}
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Test *tests_checksum_crc16_ccitt_fcs_tests(void)
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{
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EMB_UNIT_TESTFIXTURES(fixtures) {
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new_TestFixture(test_checksum_crc16_ccitt_fcs_sequence_empty),
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new_TestFixture(test_checksum_crc16_ccitt_fcs_sequence_1a),
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new_TestFixture(test_checksum_crc16_ccitt_fcs_sequence_256a),
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new_TestFixture(test_checksum_crc16_ccitt_fcs_sequence_1to9),
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new_TestFixture(test_checksum_crc16_ccitt_fcs_sequence_4bytes),
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new_TestFixture(test_checksum_crc16_ccitt_fcs_sequence_6bytes),
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};
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EMB_UNIT_TESTCALLER(checksum_crc16_ccitt_fcs_tests, NULL, NULL, fixtures);
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return (Test *)&checksum_crc16_ccitt_fcs_tests;
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}
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