test_crc32_mpeg2.cpp

/******************************************************************************
The MIT License(MIT)

Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com

Copyright(c) 2021 John Wellbelove

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******************************************************************************/

#include "unit_test_framework.h"

#include <iterator>
#include <string>
#include <vector>
#include <stdint.h>

#include "etl/crc32_mpeg2.h"

//*****************************************************************************
// The results for these tests were created from https://crccalc.com/
//*****************************************************************************

namespace
{
  SUITE(test_crc32_mpeg2)
  {
    //*************************************************************************
    // Table size 256
    //*************************************************************************
    TEST(test_crc32_mpeg2)
    {
      std::string data("123456789");

      uint32_t crc = etl::crc32_mpeg2(data.begin(), data.end());

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_add_values)
    {
      std::string data("123456789");

      etl::crc32_mpeg2 crc_calculator;

      for (size_t i = 0UL; i < data.size(); ++i)
      {
        crc_calculator.add(data[i]);
      }

      uint32_t crc = crc_calculator;

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_add_range)
    {
      std::string data("123456789");

      etl::crc32_mpeg2 crc_calculator;

      crc_calculator.add(data.begin(), data.end());

      uint32_t crc = crc_calculator.value();

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_add_range_via_iterator)
    {
      std::string data("123456789");

      etl::crc32_mpeg2 crc_calculator;

      std::copy(data.begin(), data.end(), crc_calculator.input());

      uint32_t crc = crc_calculator.value();

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_add_range_endian)
    {
      std::vector<uint8_t>  data1 = { 0x01U, 0x02U, 0x03U, 0x04U, 0x05U, 0x06U, 0x07U, 0x08U };
      std::vector<uint32_t> data2 = { 0x04030201UL, 0x08070605UL };
      std::vector<uint8_t>  data3 = { 0x08U, 0x07U, 0x06U, 0x05U, 0x04U, 0x03U, 0x02U, 0x01U };

      uint32_t crc1 = etl::crc32_mpeg2(data1.begin(), data1.end());
      uint32_t crc2 = etl::crc32_mpeg2((uint8_t*)&data2[0], (uint8_t*)(&data2[0] + data2.size()));
      CHECK_EQUAL(crc1, crc2);

      uint32_t crc3 = etl::crc32_mpeg2(data3.rbegin(), data3.rend());
      CHECK_EQUAL(crc1, crc3);
    }

    //*************************************************************************
    // Table size 16
    //*************************************************************************
    TEST(test_crc32_mpeg2_16)
    {
      std::string data("123456789");

      uint32_t crc = etl::crc32_mpeg2_t16(data.begin(), data.end());

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_16_add_values)
    {
      std::string data("123456789");

      etl::crc32_mpeg2_t16 crc_calculator;

      for (size_t i = 0UL; i < data.size(); ++i)
      {
        crc_calculator.add(data[i]);
      }

      uint32_t crc = crc_calculator;

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_16_add_range)
    {
      std::string data("123456789");

      etl::crc32_mpeg2_t16 crc_calculator;

      crc_calculator.add(data.begin(), data.end());

      uint32_t crc = crc_calculator.value();

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_16_add_range_via_iterator)
    {
      std::string data("123456789");

      etl::crc32_mpeg2_t16 crc_calculator;

      std::copy(data.begin(), data.end(), crc_calculator.input());

      uint32_t crc = crc_calculator.value();

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_16_add_range_endian)
    {
      std::vector<uint8_t>  data1 = { 0x01U, 0x02U, 0x03U, 0x04U, 0x05U, 0x06U, 0x07U, 0x08U };
      std::vector<uint32_t> data2 = { 0x04030201UL, 0x08070605UL };
      std::vector<uint8_t>  data3 = { 0x08U, 0x07U, 0x06U, 0x05U, 0x04U, 0x03U, 0x02U, 0x01U };

      uint32_t crc1 = etl::crc32_mpeg2_t16(data1.begin(), data1.end());
      uint32_t crc2 = etl::crc32_mpeg2_t16((uint8_t*)&data2[0], (uint8_t*)(&data2[0] + data2.size()));
      CHECK_EQUAL(crc1, crc2);

      uint32_t crc3 = etl::crc32_mpeg2_t16(data3.rbegin(), data3.rend());
      CHECK_EQUAL(crc1, crc3);
    }

    //*************************************************************************
    // Table size 4
    //*************************************************************************
    TEST(test_crc32_mpeg2_4)
    {
      std::string data("123456789");

      uint32_t crc = etl::crc32_mpeg2_t4(data.begin(), data.end());

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_4_add_values)
    {
      std::string data("123456789");

      etl::crc32_mpeg2_t4 crc_calculator;

      for (size_t i = 0UL; i < data.size(); ++i)
      {
        crc_calculator.add(data[i]);
      }

      uint32_t crc = crc_calculator;

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_4_add_range)
    {
      std::string data("123456789");

      etl::crc32_mpeg2_t4 crc_calculator;

      crc_calculator.add(data.begin(), data.end());

      uint32_t crc = crc_calculator.value();

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_4_add_range_via_iterator)
    {
      std::string data("123456789");

      etl::crc32_mpeg2_t4 crc_calculator;

      std::copy(data.begin(), data.end(), crc_calculator.input());

      uint32_t crc = crc_calculator.value();

      CHECK_EQUAL(0x0376E6E7UL, crc);
    }

    //*************************************************************************
    TEST(test_crc32_mpeg2_4_add_range_endian)
    {
      std::vector<uint8_t>  data1 = { 0x01U, 0x02U, 0x03U, 0x04U, 0x05U, 0x06U, 0x07U, 0x08U };
      std::vector<uint32_t> data2 = { 0x04030201UL, 0x08070605UL };
      std::vector<uint8_t>  data3 = { 0x08U, 0x07U, 0x06U, 0x05U, 0x04U, 0x03U, 0x02U, 0x01U };

      uint32_t crc1 = etl::crc32_mpeg2_t4(data1.begin(), data1.end());
      uint32_t crc2 = etl::crc32_mpeg2_t4((uint8_t*)&data2[0], (uint8_t*)(&data2[0] + data2.size()));
      CHECK_EQUAL(crc1, crc2);

      uint32_t crc3 = etl::crc32_mpeg2_t4(data3.rbegin(), data3.rend());
      CHECK_EQUAL(crc1, crc3);
    }
  };
}