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      1 /*	$NetBSD: crc64_test.c,v 1.4 2025/07/17 19:01:47 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
      5  *
      6  * SPDX-License-Identifier: MPL-2.0
      7  *
      8  * This Source Code Form is subject to the terms of the Mozilla Public
      9  * License, v. 2.0. If a copy of the MPL was not distributed with this
     10  * file, you can obtain one at https://mozilla.org/MPL/2.0/.
     11  *
     12  * See the COPYRIGHT file distributed with this work for additional
     13  * information regarding copyright ownership.
     14  */
     15 
     16 /* ! \file */
     17 
     18 #include <inttypes.h>
     19 #include <sched.h> /* IWYU pragma: keep */
     20 #include <setjmp.h>
     21 #include <stdarg.h>
     22 #include <stddef.h>
     23 #include <stdlib.h>
     24 #include <string.h>
     25 
     26 #define UNIT_TESTING
     27 #include <cmocka.h>
     28 
     29 #include <isc/crc64.h>
     30 #include <isc/result.h>
     31 #include <isc/util.h>
     32 
     33 #include <tests/isc.h>
     34 
     35 #define TEST_INPUT(x) (x), sizeof(x) - 1
     36 
     37 ISC_RUN_TEST_IMPL(isc_crc64_init) {
     38 	uint64_t crc;
     39 
     40 	isc_crc64_init(&crc);
     41 	assert_int_equal(crc, 0xffffffffffffffffUL);
     42 }
     43 
     44 static void
     45 _crc64(const char *buf, size_t buflen, const char *result, const int repeats) {
     46 	uint64_t crc;
     47 
     48 	isc_crc64_init(&crc);
     49 	assert_int_equal(crc, 0xffffffffffffffffUL);
     50 
     51 	for (int i = 0; i < repeats; i++) {
     52 		isc_crc64_update(&crc, buf, buflen);
     53 	}
     54 
     55 	isc_crc64_final(&crc);
     56 
     57 	char hex[16 + 1];
     58 	snprintf(hex, sizeof(hex), "%016" PRIX64, crc);
     59 
     60 	assert_memory_equal(hex, result, result ? strlen(result) : 0);
     61 }
     62 
     63 /* 64-bit cyclic redundancy check */
     64 ISC_RUN_TEST_IMPL(isc_crc64) {
     65 	_crc64(TEST_INPUT(""), "0000000000000000", 1);
     66 	_crc64(TEST_INPUT("a"), "CE73F427ACC0A99A", 1);
     67 	_crc64(TEST_INPUT("abc"), "048B813AF9F49702", 1);
     68 	_crc64(TEST_INPUT("message digest"), "5273F9EA7A357BF4", 1);
     69 	_crc64(TEST_INPUT("abcdefghijklmnopqrstuvwxyz"), "59F079F9218BAAA1", 1);
     70 	_crc64(TEST_INPUT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklm"
     71 			  "nopqrstuvwxyz0123456789"),
     72 	       "A36DA8F71E78B6FB", 1);
     73 	_crc64(TEST_INPUT("123456789012345678901234567890123456789"
     74 			  "01234567890123456789012345678901234567890"),
     75 	       "81E5EB73C8E7874A", 1);
     76 }
     77 
     78 ISC_TEST_LIST_START
     79 
     80 ISC_TEST_ENTRY(isc_crc64_init)
     81 ISC_TEST_ENTRY(isc_crc64)
     82 
     83 ISC_TEST_LIST_END
     84 
     85 ISC_TEST_MAIN
     86