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reseau statique a...
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/*
* Copyright 2016 Ludwig KnΓΌpfer <ludwig.knuepfer@fu-berlin.de>
*
* 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/crc16_ccitt.h"
#include "tests-checksum.h"
static int calc_and_compare_crc_with_update(const unsigned char *buf,
size_t len, size_t split, uint16_t expected)
{
uint16_t result = crc16_ccitt_calc(buf, split);
result = crc16_ccitt_update(result, buf + split, len - split);
return result == expected;
}
static int calc_and_compare_crc(const unsigned char *buf, size_t len,
uint16_t expected)
{
uint16_t result = crc16_ccitt_calc(buf, len);
return result == expected;
}
static void test_checksum_crc16_ccitt_sequence_empty(void)
{
unsigned char buf[] = "";
uint16_t expect = 0x1D0F;
TEST_ASSERT(calc_and_compare_crc(buf, sizeof(buf) - 1, expect));
TEST_ASSERT(calc_and_compare_crc_with_update(buf, sizeof(buf) - 1,
(sizeof(buf) - 1) / 2, expect));
}
static void test_checksum_crc16_ccitt_sequence_1a(void)
{
unsigned char buf[] = "A";
uint16_t expect = 0x9479;
TEST_ASSERT(calc_and_compare_crc(buf, sizeof(buf) - 1, expect));
TEST_ASSERT(calc_and_compare_crc_with_update(buf, sizeof(buf) - 1,
(sizeof(buf) - 1) / 2, expect));
}
static void test_checksum_crc16_ccitt_sequence_256a(void)
{
unsigned char buf[] = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
"AAAA";
uint16_t expect = 0xE938;
TEST_ASSERT(calc_and_compare_crc(buf, sizeof(buf) - 1, expect));
TEST_ASSERT(calc_and_compare_crc_with_update(buf, sizeof(buf) - 1,
(sizeof(buf) - 1) / 2, expect));
}
static void test_checksum_crc16_ccitt_sequence_1to9(void)
{
unsigned char buf[] = "123456789";
uint16_t expect = 0xE5CC;
TEST_ASSERT(calc_and_compare_crc(buf, sizeof(buf) - 1, expect));
TEST_ASSERT(calc_and_compare_crc_with_update(buf, sizeof(buf)
- 1, (sizeof(buf) - 1) / 2, expect));
}
static void test_checksum_crc16_ccitt_sequence_4bytes(void)
{
unsigned char buf[] = { 0x12, 0x34, 0x56, 0x78 };
uint16_t expect = 0xBA3C;
TEST_ASSERT(calc_and_compare_crc(buf, sizeof(buf), expect));
TEST_ASSERT(calc_and_compare_crc_with_update(buf, sizeof(buf),
sizeof(buf) / 2, expect));
}
Test *tests_checksum_crc16_ccitt_tests(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
/* Reference values according to
* http://srecord.sourceforge.net/crc16-ccitt.html */
new_TestFixture(test_checksum_crc16_ccitt_sequence_empty),
new_TestFixture(test_checksum_crc16_ccitt_sequence_1a),
new_TestFixture(test_checksum_crc16_ccitt_sequence_256a),
new_TestFixture(test_checksum_crc16_ccitt_sequence_1to9),
new_TestFixture(test_checksum_crc16_ccitt_sequence_4bytes),
};
EMB_UNIT_TESTCALLER(checksum_crc16_ccitt_tests, NULL, NULL, fixtures);
return (Test *)&checksum_crc16_ccitt_tests;
}
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