fsfw/contrib/fsfw_contrib/etl-20.39.4/test/test_reference_flat_multimap.cpp

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

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

Copyright(c) 2017 John Wellbelove

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files(the "Software"), to deal
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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******************************************************************************/

#include "unit_test_framework.h"

#include <map>
#include <array>
#include <algorithm>
#include <utility>
#include <iterator>
#include <string>
#include <vector>

#include "data.h"

#include "etl/reference_flat_multimap.h"

namespace
{
  static const size_t SIZE = 10UL;

  typedef TestDataDC<std::string>  DC;
  typedef TestDataNDC<std::string> NDC;

  typedef ETL_OR_STD::pair<const int, DC>  ElementDC;
  typedef ETL_OR_STD::pair<const int, NDC> ElementNDC;

  typedef etl::reference_flat_multimap<int, DC, SIZE>  DataDC;
  typedef etl::reference_flat_multimap<int, NDC, SIZE> DataNDC;
  typedef etl::ireference_flat_multimap<int, DC>       IDataDC;
  typedef etl::ireference_flat_multimap<int, NDC>      IDataNDC;

  typedef std::multimap<int, DC>  Compare_DataDC;
  typedef std::multimap<int, NDC> Compare_DataNDC;

  SUITE(test_reference_flat_multimap)
  {
    struct Key
    {
      Key(int k_)
        : k(k_)
      {
      }

      int k;
    };

    bool operator <(const Key & lhs, const int rhs)
    {
      return (lhs.k < rhs);
    }

    bool operator <(const int lhs, const Key & rhs)
    {
      return (lhs < rhs.k);
    }

    NDC N0 = NDC("A");
    NDC N1 = NDC("B");
    NDC N2 = NDC("C");
    NDC N3 = NDC("D");
    NDC N4 = NDC("E");
    NDC N5 = NDC("F");
    NDC N6 = NDC("G");
    NDC N7 = NDC("H");
    NDC N8 = NDC("I");
    NDC N9 = NDC("J");
    NDC N10 = NDC("K");
    NDC N11 = NDC("L");
    NDC N12 = NDC("M");
    NDC N13 = NDC("N");
    NDC N14 = NDC("O");
    NDC N15 = NDC("P");
    NDC N16 = NDC("Q");
    NDC N17 = NDC("R");
    NDC N18 = NDC("S");
    NDC N19 = NDC("T");

    std::array<ElementNDC, 10> initial_data =
    {
      ElementNDC(0, N0), ElementNDC(1, N1), ElementNDC(2, N2), ElementNDC(3, N3), ElementNDC(4, N4),
      ElementNDC(5, N5), ElementNDC(6, N6), ElementNDC(7, N7), ElementNDC(8, N8), ElementNDC(9, N9)
    };

    std::array<ElementNDC, 11> excess_data =
    {
      ElementNDC(0, N0), ElementNDC(1, N1), ElementNDC(2, N2), ElementNDC(3, N3), ElementNDC(4, N4),
      ElementNDC(5, N5), ElementNDC(6, N6), ElementNDC(7, N7), ElementNDC(8, N8), ElementNDC(9, N9),
      ElementNDC(10, N10)
    };

    std::array<ElementNDC, 10> different_data =
    {
      ElementNDC(10, N10), ElementNDC(11, N11), ElementNDC(12, N12), ElementNDC(13, N13), ElementNDC(14, N14),
      ElementNDC(15, N15), ElementNDC(16, N16), ElementNDC(17, N17), ElementNDC(18, N18), ElementNDC(19, N19)
    };

    std::array<ElementNDC, 10> multi_data =
    {
      ElementNDC(0, N0), ElementNDC(1, N1), ElementNDC(2, N2), ElementNDC(1, N3), ElementNDC(3, N4),
      ElementNDC(4, N5), ElementNDC(4, N6), ElementNDC(5, N7), ElementNDC(4, N8), ElementNDC(0, N9)
    };

    //*************************************************************************
    template <typename T1, typename T2>
    bool Check_Equal(T1 begin1, T1 end1, T2 begin2)
    {
      while (begin1 != end1)
      {
        if ((begin1->first != begin2->first) || (begin1->second != begin2->second))
        {
          return false;
        }

        ++begin1;
        ++begin2;
      }

      return true;
    }

    //*************************************************************************
    struct SetupFixture
    {
      SetupFixture()
      {
      }
    };

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_default_constructor)
    {
      DataDC data;

      CHECK_EQUAL(data.size(), 0UL);
      CHECK(data.empty());
      CHECK_EQUAL(data.capacity(), SIZE);
      CHECK_EQUAL(data.max_size(), SIZE);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_constructor_range)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());

      DataNDC data(initial_data.begin(), initial_data.end());

      CHECK(data.size() == SIZE);
      CHECK(!data.empty());
    }

    //*************************************************************************
    TEST(test_destruct_via_ireference_flat_multimap)
    {
      int current_count = NDC::get_instance_count();

      DataNDC* pdata = new DataNDC(initial_data.begin(), initial_data.end());

      IDataNDC* pidata = pdata;
      delete pidata;

      CHECK_EQUAL(current_count, NDC::get_instance_count());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_begin)
    {
      DataNDC data(initial_data.begin(), initial_data.end());
      const DataNDC constData(initial_data.begin(), initial_data.end());

      CHECK(data.begin() == std::begin(data));
      CHECK(constData.begin() == std::begin(constData));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_end)
    {
      DataNDC data(initial_data.begin(), initial_data.end());
      const DataNDC constData(initial_data.begin(), initial_data.end());

      CHECK(data.end() == std::end(data));
      CHECK(constData.end() == std::end(constData));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_empty)
    {
      DataNDC data;
      data.insert(initial_data.begin(), initial_data.end());

      CHECK(data.full());
      CHECK(!data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_full)
    {
      DataDC data;

      CHECK(!data.full());
      CHECK(data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assign_range)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());

      DataNDC data;

      data.assign(initial_data.begin(), initial_data.end());

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);

      CHECK(std::is_sorted(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_value)
    {
      Compare_DataNDC compare_data;
      DataNDC data;

      DataNDC::value_type item0(0, N0);
      data.insert(item0);
      compare_data.insert(item0);

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);

      DataNDC::value_type item2(2, N2);
      data.insert(item2);
      compare_data.insert(item2);

      isEqual = Check_Equal(data.begin(),
                            data.end(),
                            compare_data.begin());

      CHECK(isEqual);

      DataNDC::value_type item1(1, N1);
      data.insert(item1);
      compare_data.insert(item1);

      isEqual = Check_Equal(data.begin(),
                            data.end(),
                            compare_data.begin());

      CHECK(isEqual);

      CHECK(std::is_sorted(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_value_multiple)
    {
      Compare_DataNDC compare_data;
      DataNDC data;

      DataNDC::value_type item0(0, N0);
      data.insert(item0);
      compare_data.insert(item0);

      DataNDC::value_type item1(1, N1);
      data.insert(item1);
      compare_data.insert(item1);

      DataNDC::value_type item2(2, N2);
      data.insert(item2);
      compare_data.insert(item2);

      // Do it again.
      data.insert(item0);
      compare_data.insert(item0);

      data.insert(item1);
      compare_data.insert(item1);

      data.insert(item2);
      compare_data.insert(item2);

      CHECK_EQUAL(compare_data.size(), data.size());

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);

      CHECK(std::is_sorted(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_value_excess)
    {
      DataNDC data(initial_data.begin(), initial_data.end());

      DataNDC::value_type item10(10, N10);
      CHECK_THROW(data.insert(item10), etl::flat_multimap_full);

      CHECK(std::is_sorted(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_range)
    {
      Compare_DataNDC compare_data;
      DataNDC data;

      data.insert(initial_data.begin(), initial_data.end());
      compare_data.insert(initial_data.begin(), initial_data.end());

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);

      CHECK(std::is_sorted(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_range_excess)
    {
      DataNDC data;

      CHECK_THROW(data.insert(excess_data.begin(), excess_data.end()), etl::flat_multimap_full);

      CHECK(std::is_sorted(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_key)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());
      DataNDC data(initial_data.begin(), initial_data.end());

      size_t count_compare = compare_data.erase(5);
      size_t count         = data.erase(5);

      CHECK_EQUAL(count_compare, count);

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_key_using_transparent_comparator)
    {
      using CMap = std::multimap<int, NDC>;
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;

      CMap compare_data(initial_data.begin(), initial_data.end());
      EMap data(initial_data.begin(), initial_data.end());

      size_t count_compare = compare_data.erase(5);
      size_t count         = data.erase(Key(5));

      CHECK_EQUAL(count_compare, count);

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_single_iterator)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());
      DataNDC data(initial_data.begin(), initial_data.end());

      Compare_DataNDC::iterator i_compare_begin = compare_data.begin();
      DataNDC::iterator         i_data_begin    = data.begin();

      Compare_DataNDC::iterator i_compare = i_compare_begin;
      DataNDC::iterator         i_data    = i_data_begin;

      Compare_DataNDC::iterator i_compare_expected = i_compare_begin;
      DataNDC::iterator         i_data_expected    = i_data_begin;

      std::advance(i_compare, 2);
      std::advance(i_data, 2);

      std::advance(i_compare_expected, 3);
      std::advance(i_data_expected, 3);

      ElementNDC compare_expected = *i_compare_expected;
      ElementNDC data_expected    = *i_data_expected;

      Compare_DataNDC::iterator i_compare_result = compare_data.erase(i_compare);
      DataNDC::iterator i_data_result            = data.erase(i_data);

      CHECK(compare_expected == *i_compare_result);
      CHECK(data_expected    == *i_data_result);

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_single_const_iterator)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());
      DataNDC data(initial_data.begin(), initial_data.end());

      Compare_DataNDC::iterator i_compare_begin = compare_data.begin();
      DataNDC::iterator         i_data_begin    = data.begin();

      Compare_DataNDC::const_iterator i_compare = i_compare_begin;
      DataNDC::const_iterator         i_data    = i_data_begin;

      Compare_DataNDC::iterator i_compare_expected = i_compare_begin;
      DataNDC::iterator         i_data_expected    = i_data_begin;

      std::advance(i_compare, 2);
      std::advance(i_data, 2);

      std::advance(i_compare_expected, 3);
      std::advance(i_data_expected, 3);

      ElementNDC compare_expected = *i_compare_expected;
      ElementNDC data_expected    = *i_data_expected;

      Compare_DataNDC::iterator i_compare_result = compare_data.erase(i_compare);
      DataNDC::iterator         i_data_result    = data.erase(i_data);

      CHECK(compare_expected == *i_compare_result);
      CHECK(data_expected    == *i_data_result);

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_range)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());
      DataNDC data(initial_data.begin(), initial_data.end());

      Compare_DataNDC::const_iterator i_compare = compare_data.begin();
      DataNDC::const_iterator         i_data    = data.begin();

      Compare_DataNDC::const_iterator i_compare_end = compare_data.begin();
      DataNDC::const_iterator         i_data_end    = data.begin();

      std::advance(i_compare, 2);
      std::advance(i_data, 2);

      std::advance(i_compare_end, 4);
      std::advance(i_data_end, 4);

      ElementNDC compare_expected = *i_compare_end;
      ElementNDC data_expected    = *i_data_end;

      Compare_DataNDC::iterator i_compare_result = compare_data.erase(i_compare, i_compare_end);
      DataNDC::iterator i_data_result = data.erase(i_data, i_data_end);

      CHECK(compare_expected == *i_compare_result);
      CHECK(data_expected    == *i_data_result);

      bool isEqual = Check_Equal(data.begin(),
        data.end(),
        compare_data.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_clear)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());

      DataNDC data(initial_data.begin(), initial_data.end());
      data.clear();

      CHECK_EQUAL(data.size(), 0UL);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_iterator)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());

      DataNDC data(initial_data.begin(), initial_data.end());

      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_const_iterator)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());

      DataNDC data(initial_data.begin(), initial_data.end());

      bool isEqual = Check_Equal(data.cbegin(),
                                 data.cend(),
                                 compare_data.cbegin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_reverse_iterator)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());

      DataNDC data(initial_data.begin(), initial_data.end());

      bool isEqual = Check_Equal(data.rbegin(),
                                 data.rend(),
                                 compare_data.rbegin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_const_reverse_iterator)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());

      DataNDC data(initial_data.begin(), initial_data.end());

      bool isEqual = Check_Equal(data.crbegin(),
                                 data.crend(),
                                 compare_data.crbegin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find)
    {
      DataNDC data(initial_data.begin(), initial_data.end());

      DataNDC::iterator it = data.find(3);
      CHECK_EQUAL(N3, it->second);

      it = data.find(19);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_using_transparent_comparator)
    {
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;
      EMap data(initial_data.begin(), initial_data.end());

      EMap::iterator it = data.find(Key(3));
      CHECK_EQUAL(N3, it->second);

      it = data.find(19);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_not_present)
    {
      DataNDC data(initial_data.begin(), initial_data.end());

      DataNDC::iterator it = data.find(-1);
      CHECK(data.end() == it);

      it = data.find(10);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_not_present_using_transparent_comparator)
    {
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;
      EMap data(initial_data.begin(), initial_data.end());

      EMap::iterator it = data.find(Key(-1));
      CHECK(data.end() == it);

      it = data.find(10);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_const)
    {
      const DataNDC data(initial_data.begin(), initial_data.end());

      DataNDC::const_iterator it = data.find(3);
      CHECK_EQUAL(N3, it->second);

      it = data.find(19);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_const_using_transparent_comparator)
    {
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;
      const EMap data(initial_data.begin(), initial_data.end());

      EMap::const_iterator it = data.find(Key(3));
      CHECK_EQUAL(N3, it->second);

      it = data.find(19);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_const_not_present)
    {
      const DataNDC data(initial_data.begin(), initial_data.end());

      DataNDC::const_iterator it = data.find(-1);
      CHECK(data.end() == it);

      it = data.find(10);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_const_not_present_using_transparent_comparator)
    {
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;
      const EMap data(initial_data.begin(), initial_data.end());

      EMap::const_iterator it = data.find(-1);
      CHECK(data.end() == it);

      it = data.find(10);
      CHECK(data.end() == it);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_lower_bound)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());
      DataNDC data(initial_data.begin(), initial_data.end());

      Compare_DataNDC::iterator i_compare = compare_data.lower_bound(5);
      DataNDC::iterator         i_data    = data.lower_bound(5);

      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare), std::distance(data.begin(), i_data));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_lower_bound_using_transparent_comparator)
    {
      using CMap = std::multimap<int, NDC>;
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;

      CMap compare_data(initial_data.begin(), initial_data.end());
      EMap data(initial_data.begin(), initial_data.end());

      CMap::iterator i_compare = compare_data.lower_bound(5);
      EMap::iterator i_data    = data.lower_bound(5);

      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare), std::distance(data.begin(), i_data));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_upper_bound)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());
      DataNDC data(initial_data.begin(), initial_data.end());

      Compare_DataNDC::iterator i_compare = compare_data.upper_bound(5);
      DataNDC::iterator         i_data    = data.upper_bound(5);

      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare), std::distance(data.begin(), i_data));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_upper_bound_using_transparent_comparator)
    {
      using CMap = std::multimap<int, NDC>;
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;

      CMap compare_data(initial_data.begin(), initial_data.end());
      EMap data(initial_data.begin(), initial_data.end());

      CMap::iterator i_compare = compare_data.upper_bound(5);
      EMap::iterator i_data    = data.upper_bound(Key(5));

      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare), std::distance(data.begin(), i_data));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_equal_range)
    {
      Compare_DataNDC compare_data(initial_data.begin(), initial_data.end());
      DataNDC data(initial_data.begin(), initial_data.end());

      ETL_OR_STD::pair<Compare_DataNDC::iterator, Compare_DataNDC::iterator> i_compare = compare_data.equal_range(5);
      ETL_OR_STD::pair<DataNDC::iterator, DataNDC::iterator> i_data = data.equal_range(5);

      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare.first),  std::distance(data.begin(), i_data.first));
      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare.second), std::distance(data.begin(), i_data.second));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_equal_range_using_transparent_comparator)
    {
      using CMap = std::multimap<int, NDC>;
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;

      CMap compare_data(initial_data.begin(), initial_data.end());
      EMap data(initial_data.begin(), initial_data.end());

      ETL_OR_STD::pair<CMap::iterator, CMap::iterator> i_compare = compare_data.equal_range(5);
      ETL_OR_STD::pair<EMap::iterator, EMap::iterator> i_data = data.equal_range(Key(5));

      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare.first), std::distance(data.begin(), i_data.first));
      CHECK_EQUAL(std::distance(compare_data.begin(), i_compare.second), std::distance(data.begin(), i_data.second));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_equal_range_not_present)
    {
      DataNDC data(initial_data.begin(), initial_data.end());

      ETL_OR_STD::pair<DataNDC::iterator, DataNDC::iterator> i_data;

      i_data = data.equal_range(-1);
      CHECK(data.begin() == i_data.first);
      CHECK(data.begin() == i_data.second);

      i_data = data.equal_range(99);
      CHECK(data.end() == i_data.first);
      CHECK(data.end() == i_data.second);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_equal_range_not_present_using_transparent_comparator)
    {
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;
      EMap data(initial_data.begin(), initial_data.end());

      ETL_OR_STD::pair<EMap::iterator, EMap::iterator> i_data;

      i_data = data.equal_range(Key(-1));
      CHECK(data.begin() == i_data.first);
      CHECK(data.begin() == i_data.second);

      i_data = data.equal_range(Key(99));
      CHECK(data.end() == i_data.first);
      CHECK(data.end() == i_data.second);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_equal)
    {
      const DataNDC initial1(initial_data.begin(), initial_data.end());
      const DataNDC initial2(initial_data.begin(), initial_data.end());

      CHECK(initial1 == initial2);

      const DataNDC different(different_data.begin(), different_data.end());

      CHECK(!(initial1 == different));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_not_equal)
    {
      const DataNDC initial1(initial_data.begin(), initial_data.end());
      const DataNDC initial2(initial_data.begin(), initial_data.end());

      CHECK(!(initial1 != initial2));

      const DataNDC different(different_data.begin(), different_data.end());

      CHECK(initial1 != different);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_multi)
    {
      Compare_DataNDC compare_data(multi_data.begin(), multi_data.end());
      DataNDC data(multi_data.begin(), multi_data.end());

      ETL_OR_STD::pair<Compare_DataNDC::iterator, Compare_DataNDC::iterator> compare_range;
      ETL_OR_STD::pair<DataNDC::iterator, DataNDC::iterator> test_range;

      compare_range = compare_data.equal_range(0);
      test_range    = data.equal_range(0);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(1);
      test_range    = data.equal_range(1);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(2);
      test_range    = data.equal_range(2);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(3);
      test_range    = data.equal_range(3);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(4);
      test_range    = data.equal_range(4);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(5);
      test_range    = data.equal_range(5);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_multi_using_transparent_comparator)
    {
      using CMap = std::multimap<int, NDC>;
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;

      CMap compare_data(initial_data.begin(), initial_data.end());
      EMap data(initial_data.begin(), initial_data.end());

      ETL_OR_STD::pair<CMap::iterator, CMap::iterator> compare_range;
      ETL_OR_STD::pair<EMap::iterator, EMap::iterator> test_range;

      compare_range = compare_data.equal_range(0);
      test_range = data.equal_range(0);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(1);
      test_range = data.equal_range(1);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(2);
      test_range = data.equal_range(2);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(3);
      test_range = data.equal_range(3);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(4);
      test_range = data.equal_range(4);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));

      compare_range = compare_data.equal_range(5);
      test_range = data.equal_range(5);
      CHECK_EQUAL(std::distance(compare_range.first, compare_range.second), std::distance(test_range.first, test_range.second));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_count)
    {
      Compare_DataNDC compare_data(multi_data.begin(), multi_data.end());
      DataNDC data(multi_data.begin(), multi_data.end());

      CHECK_EQUAL(compare_data.count(0), data.count(0));
      CHECK_EQUAL(compare_data.count(1), data.count(1));
      CHECK_EQUAL(compare_data.count(2), data.count(2));
      CHECK_EQUAL(compare_data.count(3), data.count(3));
      CHECK_EQUAL(compare_data.count(4), data.count(4));
      CHECK_EQUAL(compare_data.count(5), data.count(5));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_count_using_transparent_comparator)
    {
      using CMap = std::multimap<int, NDC>;
      using EMap = etl::reference_flat_multimap<int, NDC, SIZE, etl::less<>>;

      CMap compare_data(initial_data.begin(), initial_data.end());
      EMap data(initial_data.begin(), initial_data.end());

      CHECK_EQUAL(compare_data.count(0), data.count(Key(0)));
      CHECK_EQUAL(compare_data.count(1), data.count(Key(1)));
      CHECK_EQUAL(compare_data.count(2), data.count(Key(2)));
      CHECK_EQUAL(compare_data.count(3), data.count(Key(3)));
      CHECK_EQUAL(compare_data.count(4), data.count(Key(4)));
      CHECK_EQUAL(compare_data.count(5), data.count(Key(5)));
    }
  };
}