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115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "clar.h"
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#include "util/legacy_checksum.h"
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#include <inttypes.h>
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#include <stdio.h>
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LegacyChecksum cksum;
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void test_legacy_checksum__initialize(void) {
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memset(&cksum, 0xcc, sizeof cksum);
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legacy_defective_checksum_init(&cksum);
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}
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static void update(const void * restrict data, size_t length) {
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legacy_defective_checksum_update(&cksum, data, length);
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}
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#define assert_checksum(EXPECTED) \
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do { \
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uint32_t checksum = legacy_defective_checksum_finish(&cksum); \
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uint32_t expected = (EXPECTED); \
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if (checksum != expected) { \
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char error_msg[256]; \
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sprintf(error_msg, \
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"%#08"PRIx32" != %#08"PRIx32"\n", \
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expected, checksum); \
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clar__assert(0, __FILE__, __LINE__, \
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" expected != checksum", error_msg, 1); \
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} \
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} while (0)
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void test_legacy_checksum__no_data(void) {
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assert_checksum(0xffffffff);
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}
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void test_legacy_checksum__one_byte(void) {
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update("A", 1);
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assert_checksum(0xf743b0bb);
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}
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void test_legacy_checksum__standard(void) {
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update("123456789", 9);
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assert_checksum(0xaff19057);
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}
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void test_legacy_checksum__one_word(void) {
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update("1234", 4);
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assert_checksum(0xc2091428);
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}
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void test_legacy_checksum__repeated_byte(void) {
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update("1111", 4);
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assert_checksum(0x13cbc447);
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}
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void test_legacy_checksum__two_words(void) {
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update("abcd", 4);
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update("efgh", 4);
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assert_checksum(0x18c4859c);
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}
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void test_legacy_checksum__split_word(void) {
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update("123", 3);
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update("4", 1);
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assert_checksum(0xc2091428);
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}
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void test_legacy_checksum__finish_with_partial(void) {
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update("1234", 4);
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update("5", 1);
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assert_checksum(0xec5baa37);
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}
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void test_legacy_checksum__start_with_partial(void) {
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update("123", 3);
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update("4567", 4);
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update("8", 1);
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assert_checksum(0xfefc54f9);
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}
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void test_legacy_checksum__start_and_finish_with_partial(void) {
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update("12", 2);
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update("3456", 4);
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update("78", 2);
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assert_checksum(0xfefc54f9);
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}
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void test_legacy_checksum__long_input(void) {
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update("1234567890abcdefghijklmnopqrstuvwxyz", 36);
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assert_checksum(0x586c447d);
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}
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void test_legacy_checksum__convenience_wrapper(void) {
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uint32_t sum = legacy_defective_checksum_memory("12345", 5);
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cl_assert_equal_i(sum, 0xec5baa37);
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}
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