// SPDX-License-Identifier: GPL-2.0-only
/*
 * Digital Voice Modem - Test Suite
 * GPLv2 Open Source. Use is subject to license terms.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 *  Copyright (C) 2023 Bryan Biedenkapp, N2PLL
 *
 */
#include "host/Defines.h"
#include "common/edac/CRC.h"
#include "common/Log.h"
#include "common/Utils.h"

using namespace edac;

#include <catch2/catch_test_macros.hpp>
#include <stdlib.h>
#include <time.h>

TEST_CASE("CRC 16-bit CCITT-161 Test", "[crc][ccitt_161]") {
    bool failed = false;

    INFO("CRC CCITT-161 16-bit CRC Test");

    srand((unsigned int)time(NULL));

    const uint32_t len = 32U;
    uint8_t* random = (uint8_t*)malloc(len);

    for (size_t i = 0; i < len - 2U; i++) {
        random[i] = rand();
    }

    CRC::addCCITT161(random, len);

    uint16_t inCrc = (random[len - 2U] << 8) | (random[len - 1U] << 0);
    ::LogInfoEx("T", "CRC::checkCCITT161(), crc = $%04X", inCrc);

    Utils::dump(2U, "CCITT-161_Sanity_Test CRC", random, len);

    bool ret = CRC::checkCCITT161(random, len);
    if (!ret) {
        ::LogError("T", "CCITT-161_Sanity_Test, failed CRC CCITT-162 check");
        failed = true;
        goto cleanup;
    }

    random[10U] >>= 8;
    random[11U] >>= 8;

    ret = CRC::checkCCITT161(random, len);
    if (ret) {
        ::LogError("T", "CCITT-161_Sanity_Test, failed CRC CCITT-162 error check");
        failed = true;
        goto cleanup;
    }

cleanup:
    free(random);
    REQUIRE(failed==false);
}
