/*
 * Common Utils Tests
 *
 * Christian Giese, June 2021
 *
 * Copyright (C) 2020-2024, RtBrick, Inc.
 * SPDX-License-Identifier: BSD-3-Clause
 */
#include <stddef.h>
#include <stdarg.h>
#include <setjmp.h>
#include <cmocka.h>
#include <checksum.h>

static void
test_calculate_fletcher_checksum(void **unused) {
    (void) unused;

    uint8_t pdu1[] = {
        0x02, 0x08, 0x50, 0x9c, 0x89, 0xe4, 0x00, 0x01, 0x00, 0x0e, 0x3f, 0x5a,
        0xff, 0xff, 0x03, 0x0a, 0x07, 0x01, 0x44, 0x75, 0x67, 0x6c, 0x61, 0x73,
        0x16, 0x2e, 0x02, 0x08, 0x3e, 0x9d, 0xde, 0xc5, 0x00, 0x00, 0x00, 0x14,
        0x23, 0x04, 0x08, 0x00, 0x00, 0x00, 0x87, 0x00, 0x00, 0x00, 0x4c, 0x06,
        0x04, 0x3e, 0x9d, 0xdf, 0x9d, 0x08, 0x04, 0x3e, 0x9d, 0xdf, 0x9e, 0x09,
        0x04, 0x50, 0x3a, 0x43, 0xb7, 0x1f, 0x05, 0x30, 0x00, 0x00, 0x73, 0xa0,
        0x16, 0x2e, 0x02, 0x08, 0x50, 0x9c, 0x6c, 0xf0, 0x00, 0x00, 0x00, 0x14,
        0x23, 0x04, 0x08, 0x00, 0x00, 0x00, 0x85, 0x00, 0x00, 0x00, 0x8b, 0x06,
        0x04, 0x50, 0x9c, 0x9c, 0xd1, 0x08, 0x04, 0x50, 0x9c, 0x9c, 0xd2, 0x09,
        0x04, 0x50, 0x3a, 0x43, 0xb7, 0x1f, 0x05, 0x30, 0x00, 0x00, 0x73, 0xaa
    };
    uint16_t pdu1_checksum = 0x3bd4;

    uint16_t checksum = calculate_fletcher_checksum((void*)pdu1, 12, sizeof(pdu1));
    assert_int_equal(checksum, pdu1_checksum);
}

int main() {
    const struct CMUnitTest tests[] = {
        cmocka_unit_test(test_calculate_fletcher_checksum),
    };
    return cmocka_run_group_tests(tests, NULL, NULL);
}