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

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

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

Copyright(c) 2014 John Wellbelove, rlindeman

Permission is hereby granted, free of charge, to any person obtaining a copy
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in the Software without restriction, including without limitation the rights
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 <set>
#include <array>
#include <algorithm>
#include <utility>
#include <iterator>
#include <string>
#include <vector>

#include "etl/multiset.h"
#include "etl/checksum.h"

#include "data.h"

static const size_t MAX_SIZE = 10UL;

#define TEST_GREATER_THAN
#ifdef TEST_GREATER_THAN
using Data = etl::multiset<int, MAX_SIZE, std::greater<int>>;
using IData = etl::imultiset<int, std::greater<int>>;
using Compare_Data = std::multiset<int, std::greater<int>>;
#else
using Data = etl::multiset<int, MAX_SIZE, std::less<int>>;
using IData = etl::multiset<int, std::less<int>>;
using Compare_Data = std::multiset<int, std::less<int>>;
#endif

using ItemM = TestDataM<int>;

struct simple_hash
{
  size_t operator ()(const ItemM& value) const
  {
    etl::checksum<size_t> sum;

    sum.add(value.valid);
    sum.add(value.value);

    return sum.value();
  }
};

using DataM = etl::multiset<ItemM, MAX_SIZE>;

using Data_iterator               = Data::iterator;
using Data_const_iterator         = Data::const_iterator;
using Compare_Data_iterator       = Compare_Data::iterator;
using Compare_Data_const_iterator = Compare_Data::const_iterator;

namespace
{
  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);
  }

  SUITE(test_multiset)
  {
    //*************************************************************************
#include "etl/private/diagnostic_null_dereference_push.h"
    template <typename T1, typename T2>
    bool Check_Equal(T1 begin1, T1 end1, T2 begin2)
    {
      while (begin1 != end1)
      {
        if (*begin1 != *begin2)
        {
          return false;
        }

        ++begin1;
        ++begin2;
      }

      return true;
    }
#include "etl/private/diagnostic_pop.h"

    //*************************************************************************
    struct SetupFixture
    {
      // Multisets of predefined data from which to construct multisets used in
      // each test
      std::multiset<int> initial_data;
      std::multiset<int> excess_data;
      std::multiset<int> different_data;
      std::multiset<int> random_data;
      std::multiset<int> initial_data_even;
      std::multiset<int> test_data;

      SetupFixture()
      {
        // Create a multiset of initial data
        initial_data.insert(0);
        initial_data.insert(0);
        initial_data.insert(1);
        initial_data.insert(1);
        initial_data.insert(1);
        initial_data.insert(2);
        initial_data.insert(2);
        initial_data.insert(2);
        initial_data.insert(3);
        initial_data.insert(4);

        // Create a multiset of excess data
        excess_data.insert(0);
        excess_data.insert(1);
        excess_data.insert(2);
        excess_data.insert(2);
        excess_data.insert(3);
        excess_data.insert(3);
        excess_data.insert(3);
        excess_data.insert(4);
        excess_data.insert(5);
        excess_data.insert(6);
        excess_data.insert(10);

        // Create a multiset of different data
        different_data.insert(10);
        different_data.insert(11);
        different_data.insert(12);
        different_data.insert(13);
        different_data.insert(14);
        different_data.insert(15);
        different_data.insert(16);
        different_data.insert(17);
        different_data.insert(18);
        different_data.insert(19);

        // Create a multiset of random data
        random_data.insert(3);
        random_data.insert(3);
        random_data.insert(0);
        random_data.insert(5);
        random_data.insert(6);
        random_data.insert(2);
        random_data.insert(0);
        random_data.insert(2);
        random_data.insert(4);
        random_data.insert(3);


        //even values
        initial_data_even.insert(0);
        initial_data_even.insert(2);
        initial_data_even.insert(4);
        initial_data_even.insert(6);
        initial_data_even.insert(8);
        initial_data_even.insert(10);
        initial_data_even.insert(12);
        initial_data_even.insert(14);
        initial_data_even.insert(16);
        initial_data_even.insert(18);

        //test set
        test_data.insert(0);
        test_data.insert(1);
        test_data.insert(2);
        test_data.insert(3);
        test_data.insert(4);
        test_data.insert(5);
        test_data.insert(6);
        test_data.insert(7);
        test_data.insert(8);
        test_data.insert(9);
        test_data.insert(10);
        test_data.insert(11);
        test_data.insert(12);
        test_data.insert(13);
        test_data.insert(14);
        test_data.insert(15);
        test_data.insert(16);
        test_data.insert(17);
        test_data.insert(18);
        test_data.insert(19);
      }
    };

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

      CHECK_EQUAL(data.size(), 0UL);
      CHECK(data.empty());
      CHECK_EQUAL(data.capacity(), MAX_SIZE);
      CHECK_EQUAL(data.max_size(), MAX_SIZE);
      CHECK(data.begin() == data.end());
    }

#if ETL_USING_CPP17 && ETL_HAS_INITIALIZER_LIST && !defined(ETL_TEMPLATE_DEDUCTION_GUIDE_TESTS_DISABLED)
    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_cpp17_deduced_constructor)
    {
      etl::multiset data{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
      etl::multiset<int, 10U> check = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

      CHECK(!data.empty());
      CHECK(data.full());
      CHECK(data.begin() != data.end());
      CHECK_EQUAL(10U, data.size());
      CHECK_EQUAL(0U, data.available());
      CHECK_EQUAL(10U, data.capacity());
      CHECK_EQUAL(10U, data.max_size());
      CHECK(data == check);
    }
#endif

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_copy_constructor)
    {
      Compare_Data compare_data(initial_data.begin(), initial_data.end());
      Data data1(compare_data.begin(), compare_data.end());
      Data data2(data1);

      CHECK_EQUAL(initial_data.size(), data1.size());
      CHECK(data1.size() == data2.size());

      bool isEqual = false;

      isEqual = Check_Equal(data1.begin(),
                            data1.end(),
                            compare_data.begin());
      CHECK(isEqual);

      isEqual = Check_Equal(data2.begin(),
                            data2.end(),
                            compare_data.begin());
      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_move_constructor)
    {
      DataM data1;

      ItemM d1(1);
      ItemM d2(2);
      ItemM d3(3);

      data1.insert(etl::move(d1));
      data1.insert(etl::move(d2));
      data1.insert(etl::move(d3));
      data1.insert(ItemM(4));

      DataM data2(std::move(data1));

      CHECK(!data1.empty()); // Move does not clear the source.
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_destruct_via_imultiset)
    {
      Data* pdata = new Data(initial_data.begin(), initial_data.end());

      IData* pidata = pdata;
      delete pidata;
    }

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

      Data data(compare_data.begin(), compare_data.end());

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

#if ETL_HAS_INITIALIZER_LIST
    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_constructor_initializer_list)
    {
      Compare_Data compare_data = { 0, 1, 1, 3, 4, 4, 6, 7, 7, 9 };

      Data data = { 0, 1, 1, 3, 4, 4, 6, 7, 7, 9 };

      CHECK_EQUAL(compare_data.size(), data.size());
      CHECK(!data.empty());

      bool isEqual = std::equal(data.begin(), data.end(), compare_data.begin());
      CHECK(isEqual);
    }
#endif

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assignment)
    {
      Data data(initial_data.begin(), initial_data.end());
      Data otherData;

      otherData = data;

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assignment_interface)
    {
      Data data1(initial_data.begin(), initial_data.end());
      Data data2;

      IData& idata1 = data1;
      IData& idata2 = data2;

      idata2 = idata1;

      bool isEqual = std::equal(data1.begin(),
                                data1.end(),
                                data2.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_self_assignment)
    {
      Data data(initial_data.begin(), initial_data.end());
      Data other_data(data);

#include "etl/private/diagnostic_self_assign_overloaded_push.h" 
      other_data = other_data;
#include "etl/private/diagnostic_pop.h" 

      bool isEqual = std::equal(data.begin(),
                                data.end(),
                                other_data.begin());

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_move_assignment)
    {
      DataM data1;

      ItemM d1(1);
      ItemM d2(2);
      ItemM d3(3);

      data1.insert(etl::move(d1));
      data1.insert(etl::move(d2));
      data1.insert(etl::move(d3));
      data1.insert(ItemM(4));

      DataM data2;
      data2.insert(ItemM(5));

      data2 = std::move(data1);

      CHECK(!data1.empty()); // Move does not clear the source.
    }

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

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

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

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

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

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

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

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

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

      Data data;

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

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_value)
    {
      Compare_Data compare_data;
      Data data;

      Data::iterator data_result = data.insert(2);
      Compare_Data::iterator compare_result = compare_data.insert(2);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      data_result = data.insert(1);
      compare_result = compare_data.insert(1);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      data_result = data.insert(2);
      compare_result = compare_data.insert(2);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      data_result = data.insert(3);
      compare_result = compare_data.insert(3);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      // Adding this next 2 will trigger a 3 node rotate RL on insert
      data_result = data.insert(2);
      compare_result = compare_data.insert(2);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      // Adding this next 4 will trigger a 2 node rotate left on insert
      data_result = data.insert(4);
      compare_result = compare_data.insert(4);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      data_result = data.insert(0);
      compare_result = compare_data.insert(0);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      // Check that elements in multiset are the same
      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());
      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_hint_value)
    {
      Compare_Data compare_data;
      Data data;

      Data::iterator data_result = data.insert(0);
      Compare_Data::iterator compare_result = compare_data.insert(0);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      // Check that elements in multiset are the same
      bool isEqual = Check_Equal(data.begin(),
        data.end(),
        compare_data.begin());
      CHECK(isEqual);

      data.insert(data_result, 1);
      compare_data.insert(compare_result, 1);

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_const_hint_value)
    {
      Compare_Data compare_data;
      Data data;

      Data::iterator data_result = data.insert(2);
      Compare_Data::iterator compare_result = compare_data.insert(2);

      // Check that both return successful return results
      CHECK_EQUAL(*compare_result, *data_result);

      // Check that elements in multiset are the same
      bool isEqual = Check_Equal(data.begin(),
                                 data.end(),
                                 compare_data.begin());
      CHECK(isEqual);

      data.insert(Data::const_iterator(data_result), 1);
      compare_data.insert(compare_result, 1);

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

      CHECK(isEqual);
    }

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

      CHECK_THROW(data.insert(10), etl::multiset_full);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_range)
    {
      Compare_Data compare_data;
      Data 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);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_range_random)
    {
      Compare_Data compare_data;
      Data data;

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

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

      CHECK(isEqual);
    }

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

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_moved_value)
    {
      DataM data;

      ItemM d1(1);
      ItemM d2(2);
      ItemM d3(3);

      data.insert(etl::move(d1));
      data.insert(etl::move(d2));
      data.insert(etl::move(d3));
      data.insert(ItemM(4));

      CHECK(!bool(d1));
      CHECK(!bool(d2));
      CHECK(!bool(d3));

      CHECK_EQUAL(1, data.find(ItemM(1))->value);
      CHECK_EQUAL(2, data.find(ItemM(2))->value);
      CHECK_EQUAL(3, data.find(ItemM(3))->value);
      CHECK_EQUAL(4, data.find(ItemM(4))->value);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_equal_range)
    {
      Compare_Data compare_data(random_data.begin(), random_data.end());
      Data data(random_data.begin(), random_data.end());

      // Test a number not available
      ETL_OR_STD::pair<Data::iterator, Data::iterator> data_result = data.equal_range(1);
      ETL_OR_STD::pair<Compare_Data::iterator, Compare_Data::iterator> compare_result = compare_data.equal_range(1);

      // Check that both return the same return results
      CHECK_EQUAL(*compare_result.first, *data_result.first);
      CHECK_EQUAL(*compare_result.second, *data_result.second);

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_const_equal_range)
    {
      const Compare_Data compare_data(initial_data.begin(), initial_data.end());
      const Data data(initial_data.begin(), initial_data.end());

      // Test a number with several of the same key
      ETL_OR_STD::pair<Data::const_iterator, Data::const_iterator> data_result = data.equal_range(2);
      ETL_OR_STD::pair<Compare_Data::const_iterator, Compare_Data::const_iterator> compare_result = compare_data.equal_range(2);

      // Check that both return the same return results
      CHECK_EQUAL(*compare_result.first, *data_result.first);
      CHECK_EQUAL(*compare_result.second, *data_result.second);

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_value)
    {
      Compare_Data compare_data(initial_data.begin(), initial_data.end());
      Data data(initial_data.begin(), initial_data.end());

      size_t compare_count = compare_data.erase(2);
      size_t data_count = data.erase(2);

      // Check that both return the same return results
      CHECK_EQUAL(compare_count, data_count);

      // Erase another value
      compare_count = compare_data.erase(1);
      data_count = data.erase(1);

      // Check that both return the same return results
      CHECK_EQUAL(compare_count, data_count);

      // Erase another value
      compare_count = compare_data.erase(3);
      data_count = data.erase(3);

      // Check that both return the same return results
      CHECK_EQUAL(compare_count, data_count);

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_value_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      CSet compare_data(initial_data.begin(), initial_data.end());
      
      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      ESet data(initial_data.begin(), initial_data.end());

      size_t compare_count = compare_data.erase(2);
      size_t data_count = data.erase(Key(2));

      // Check that both return the same return results
      CHECK_EQUAL(compare_count, data_count);

      // Erase another value
      compare_count = compare_data.erase(1);
      data_count = data.erase(1);

      // Check that both return the same return results
      CHECK_EQUAL(compare_count, data_count);

      // Erase another value
      compare_count = compare_data.erase(3);
      data_count = data.erase(3);

      // Check that both return the same return results
      CHECK_EQUAL(compare_count, data_count);

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_single)
    {
      Compare_Data compare_data(initial_data.begin(), initial_data.end());
      Data data(initial_data.begin(), initial_data.end());

      Compare_Data::iterator i_compare = compare_data.begin();
      Data::iterator i_data            = data.begin();

      Compare_Data::iterator i_compare1 = compare_data.erase(i_compare);
      Data::iterator i_data1 = data.erase(i_data);

      CHECK_EQUAL(*i_compare1, *i_data1);

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_const_erase_single)
    {
      Compare_Data compare_data(initial_data.begin(), initial_data.end());
      Data data(initial_data.begin(), initial_data.end());

      Compare_Data::const_iterator i_compare = compare_data.cbegin();
      Data::const_iterator i_data = data.cbegin();

      std::advance(i_compare, 8);
      std::advance(i_data, 8);

      Compare_Data::const_iterator i_compare1 = compare_data.erase(i_compare);
      Data::const_iterator i_data1 = data.erase(i_data);

      CHECK_EQUAL(*i_compare1, *i_data1);

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_range)
    {
      Compare_Data compare_data(random_data.begin(), random_data.end());
      Data data(random_data.begin(), random_data.end());

      Compare_Data::iterator i_compare = compare_data.begin();
      Data::iterator i_data            = data.begin();

      Compare_Data::iterator i_compare_end = compare_data.begin();
      Data::iterator i_data_end            = data.begin();

      std::advance(i_compare, 1);
      std::advance(i_data,    1);

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

      compare_data.erase(i_compare, i_compare_end);
      data.erase(i_data, i_data_end);

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_const_erase_range)
    {
      Compare_Data compare_data(initial_data.begin(), initial_data.end());
      Data data(initial_data.begin(), initial_data.end());

      compare_data.erase(compare_data.cbegin(), compare_data.cend());
      data.erase(data.cbegin(), data.cend());

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

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

      Data data(compare_data.begin(), compare_data.end());
      data.clear();

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_count)
    {
      const Data data(initial_data.begin(), initial_data.end());
      const Compare_Data compare_data(initial_data.begin(), initial_data.end());

      CHECK_EQUAL(compare_data.count(-1), data.count(-1));
      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(99), data.count(99));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_count_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      const CSet compare_data(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      const ESet data(initial_data.begin(), initial_data.end());

      CHECK_EQUAL(compare_data.count(-1), data.count(Key(-1)));
      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(99), data.count(Key(99)));
    }

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

      Data data(compare_data.begin(), compare_data.end());

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

      CHECK(isEqual);
    }

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

      Data data(compare_data.begin(), compare_data.end());

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

      CHECK(isEqual);
    }

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

      Data data(compare_data.begin(), compare_data.end());

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

      CHECK(isEqual);
    }

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

      Data data(compare_data.begin(), compare_data.end());

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find)
    {
      Compare_Data compare_data(initial_data.begin(), initial_data.end());
      Data data(initial_data.begin(), initial_data.end());

      Data::iterator i_data = data.find(0);
      Compare_Data::iterator i_compare = compare_data.find(0);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(1);
      i_compare = compare_data.find(1);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(2);
      i_compare = compare_data.find(2);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(3);
      i_compare = compare_data.find(3);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(-1);
      i_compare = compare_data.find(-1);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);

      i_data = data.find(99);
      i_compare = compare_data.find(99);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      CSet compare_data(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      ESet data(initial_data.begin(), initial_data.end());

      ESet::iterator i_data = data.find(Key(0));
      CSet::iterator i_compare = compare_data.find(0);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(1));
      i_compare = compare_data.find(1);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(2));
      i_compare = compare_data.find(2);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(3));
      i_compare = compare_data.find(3);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(-1));
      i_compare = compare_data.find(-1);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);

      i_data = data.find(Key(99));
      i_compare = compare_data.find(99);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);
    }

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

      Data::const_iterator i_data = data.find(0);
      Compare_Data::const_iterator i_compare = compare_data.find(0);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(1);
      i_compare = compare_data.find(1);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(2);
      i_compare = compare_data.find(2);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(3);
      i_compare = compare_data.find(3);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(-1);
      i_compare = compare_data.find(-1);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);

      i_data = data.find(99);
      i_compare = compare_data.find(99);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_find_const_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      CSet compare_data(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      ESet data(initial_data.begin(), initial_data.end());

      ESet::const_iterator i_data = data.find(Key(0));
      CSet::const_iterator i_compare = compare_data.find(0);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(1));
      i_compare = compare_data.find(1);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(2));
      i_compare = compare_data.find(2);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(3));
      i_compare = compare_data.find(3);

      // Check that both return successful return results
      CHECK_EQUAL(*i_compare, *i_data);

      i_data = data.find(Key(-1));
      i_compare = compare_data.find(-1);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);

      i_data = data.find(Key(99));
      i_compare = compare_data.find(99);

      // Check that both return successful return results
      CHECK(data.end() == i_data);
      CHECK(compare_data.end() == i_compare);
    }

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

      CHECK(initial1 == initial2);

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

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

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

      CHECK(!(initial1 != initial2));

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

      CHECK(initial1 != different);
    }

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

      Compare_Data::iterator i_compare = compare_data.lower_bound(2);
      Data::iterator i_data = data.lower_bound(2);
      CHECK_EQUAL(*i_compare, *i_data);

#ifdef TEST_GREATER_THAN
      i_compare = compare_data.lower_bound(-1);
      CHECK(compare_data.end() == i_compare);

      i_data = data.lower_bound(-1);
      CHECK(data.end() == i_data);

      i_compare = compare_data.lower_bound(99);
      i_data = data.lower_bound(99);
      CHECK(i_data != data.end());
      
      if ((i_data != data.end()) && (i_compare != compare_data.end()))
      {
        CHECK(*i_compare == *i_data);
      }
#else
      i_compare = compare_data.lower_bound(-1);
      i_data = data.lower_bound(-1);
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.lower_bound(99);
      CHECK_EQUAL(compare_data.end(), i_compare);

      i_data = data.lower_bound(99);
      CHECK_EQUAL(data.end(), i_data);
#endif
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_lower_bound_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      CSet compare_data(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      ESet data(initial_data.begin(), initial_data.end());

      CSet::iterator i_compare = compare_data.lower_bound(2);
      ESet::iterator i_data = data.lower_bound(Key(2));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.lower_bound(-1);
      i_data = data.lower_bound(Key(-1));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.lower_bound(99);
      CHECK(compare_data.end() == i_compare);

      i_data = data.lower_bound(Key(99));
      CHECK(data.end() == i_data);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_lower_bound_const)
    {
      Compare_Data compare_data(initial_data.begin(), initial_data.end());
      const Data data(initial_data.begin(), initial_data.end());

      Compare_Data::const_iterator i_compare = compare_data.lower_bound(4);
      Data::const_iterator i_data = data.lower_bound(4);
      CHECK_EQUAL(*i_compare, *i_data);

#ifdef TEST_GREATER_THAN
      i_compare = compare_data.lower_bound(-1);
      CHECK(compare_data.end() == i_compare);

      i_data = data.lower_bound(-1);
      CHECK(data.end() == i_data);

      i_compare = compare_data.lower_bound(99);
      i_data = data.lower_bound(99);
      CHECK(i_data != data.end());

      if ((i_data != data.end()) && (i_compare != compare_data.end()))
      {
        CHECK(*i_compare == *i_data);
      }
#else
      i_compare = compare_data.lower_bound(-1);
      i_data = data.lower_bound(-1);
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.lower_bound(99);
      CHECK_EQUAL(compare_data.end(), i_compare);

      i_data = data.lower_bound(99);
      CHECK_EQUAL(data.end(), i_data);
#endif
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_lower_bound_const_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      CSet compare_data(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      ESet data(initial_data.begin(), initial_data.end());

      CSet::const_iterator i_compare = compare_data.lower_bound(4);
      ESet::const_iterator i_data = data.lower_bound(Key(4));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.lower_bound(-1);
      i_data = data.lower_bound(Key(-1));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.lower_bound(99);
      CHECK(compare_data.end() == i_compare);

      i_data = data.lower_bound(Key(99));
      CHECK(data.end() == i_data);
    }

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

      Compare_Data::iterator i_compare = compare_data.upper_bound(1);
      Data::iterator i_data = data.upper_bound(1);
      CHECK_EQUAL(*i_compare, *i_data);

#ifdef TEST_GREATER_THAN
      i_compare = compare_data.upper_bound(-1);
      CHECK(compare_data.end() == i_compare);

      i_data = data.upper_bound(-1);
      CHECK(data.end() == i_data);

      i_compare = compare_data.upper_bound(99);
      i_data = data.upper_bound(99);
      CHECK(i_data != data.end());

      if ((i_data != data.end()) && (i_compare != compare_data.end()))
      {
        CHECK(*i_compare == *i_data);
      }
#else
      i_compare = compare_data.upper_bound(-1);
      i_data = data.upper_bound(-1);
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.upper_bound(99);
      CHECK_EQUAL(compare_data.end(), i_compare);

      i_data = data.upper_bound(99);
      CHECK_EQUAL(data.end(), i_data);
#endif
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_upper_bound_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      CSet compare_data(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      ESet data(initial_data.begin(), initial_data.end());

      CSet::iterator i_compare = compare_data.upper_bound(1);
      ESet::iterator i_data = data.upper_bound(Key(1));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.upper_bound(-1);
      i_data = data.upper_bound(Key(-1));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.upper_bound(99);
      CHECK(compare_data.end() == i_compare);

      i_data = data.upper_bound(Key(99));
      CHECK(data.end() == i_data);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_upper_bound_const)
    {
      const Compare_Data compare_data(initial_data.begin(), initial_data.end());
      const Data data(initial_data.begin(), initial_data.end());

      Compare_Data::const_iterator i_compare = compare_data.upper_bound(3);
      Data::const_iterator i_data = data.upper_bound(3);
      CHECK_EQUAL(*i_compare, *i_data);

#ifdef TEST_GREATER_THAN
      i_compare = compare_data.upper_bound(-1);
      CHECK(compare_data.end() == i_compare);

      i_data = data.upper_bound(-1);
      CHECK(data.end() == i_data);

      i_compare = compare_data.upper_bound(99);
      i_data = data.upper_bound(99);
      CHECK(i_data != data.end());

      if ((i_data != data.end()) && (i_compare != compare_data.end()))
      {
        CHECK(*i_compare == *i_data);
      }
#else
      i_compare = compare_data.upper_bound(-1);
      i_data = data.upper_bound(-1);
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.upper_bound(99);
      CHECK_EQUAL(compare_data.end(), i_compare);

      i_data = data.upper_bound(99);
      CHECK_EQUAL(data.end(), i_data);
#endif
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_upper_bound_const_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      const CSet compare_data(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      const ESet data(initial_data.begin(), initial_data.end());

      CSet::const_iterator i_compare = compare_data.upper_bound(3);
      ESet::const_iterator i_data = data.upper_bound(Key(3));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.upper_bound(-1);
      i_data = data.upper_bound(Key(-1));
      CHECK_EQUAL(*i_compare, *i_data);

      i_compare = compare_data.upper_bound(99);
      CHECK(compare_data.end() == i_compare);

      i_data = data.upper_bound(Key(99));
      CHECK(data.end() == i_data);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_key_compare)
    {
      const Data data(initial_data.begin(), initial_data.end());

      Data::key_compare compare = data.key_comp();

      Data::key_type a(1);
      Data::key_type b(2);

#ifdef TEST_GREATER_THAN
      CHECK(!compare(a, b));
      CHECK(compare(b, a));
#else
      CHECK(compare(a, b));
      CHECK(!compare(b, a));
#endif
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_key_compare_using_transparent_comparator)
    {
      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      const ESet data(initial_data.begin(), initial_data.end());

      ESet::key_compare compare = data.key_comp();

      int a(1);
      ESet::key_type b(2);

      CHECK(compare(a, b));
      CHECK(!compare(b, a));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_value_compare)
    {
      const Data data(initial_data.begin(), initial_data.end());

      Data::value_compare compare = data.value_comp();

      Data::value_type a(1);
      Data::value_type b(2);

#ifdef TEST_GREATER_THAN
      CHECK(!compare(a, b));
      CHECK(compare(b, a));
#else
      CHECK(compare(a, b));
      CHECK(!compare(b, a));
#endif
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_compare_lower_upper_bound)
    {
        Data data(initial_data_even.begin(), initial_data_even.end());
        Compare_Data compare(initial_data_even.begin(), initial_data_even.end());

        std::vector<int> tab(test_data.begin(), test_data.end());

        //make sure both data and compare contain same elements
        std::vector<int> data_elements(data.begin(), data.end());
        std::vector<int> compare_data_elements(compare.begin(), compare.end());

        CHECK(data_elements == compare_data_elements);
        CHECK_EQUAL(data_elements.size(), MAX_SIZE);

        for(std::vector<int>::iterator it = tab.begin() ; it != tab.end() ; ++it)
        {
            int i = *it;

            //lower_bound
            CHECK_EQUAL(compare.lower_bound(i) == compare.end(), data.lower_bound(i) == data.end());
            //if both end, or none
            if((compare.lower_bound(i) == compare.end()) == (data.lower_bound(i) == data.end()))
            {
                //if both are not end
                if ((data.lower_bound(i) != data.end()) && (compare.lower_bound(i) != compare.end()))
                {
                    CHECK((*compare.lower_bound(i)) == (*data.lower_bound(i)));
                }

                ETL_OR_STD::pair<Compare_Data::const_iterator, Compare_Data::const_iterator> stlret = compare.equal_range(i);
                ETL_OR_STD::pair<Data::const_iterator, Data::const_iterator> etlret = data.equal_range(i);

                CHECK_EQUAL(stlret.first == compare.end(), etlret.first == data.end());
                if((stlret.first != compare.end()) && (etlret.first != data.end()))
                {
                    CHECK((*stlret.first) == (*etlret.first));
                }
                CHECK_EQUAL(stlret.second == compare.end(), etlret.second == data.end());
                if((stlret.second != compare.end()) && (etlret.second != data.end()))
                {
                    CHECK((*stlret.second) == (*etlret.second));
                }
            }

            //upper_bound
            CHECK_EQUAL(compare.upper_bound(i) == compare.end(), data.upper_bound(i) == data.end());
            //if both end, or none
            if ((compare.upper_bound(i) == compare.end()) == (data.upper_bound(i) == data.end()))
            {
                //if both are not end
                if ((data.upper_bound(i) != data.end()) && (compare.upper_bound(i) != compare.end()))
                {
                    CHECK((*compare.upper_bound(i)) == (*data.upper_bound(i)));
                }
            }
        }
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_compare_lower_upper_bound_using_transparent_comparator)
    {
      using CSet = std::multiset<int, std::less<int>>;
      CSet compare(initial_data.begin(), initial_data.end());

      using ESet = etl::multiset<int, MAX_SIZE, etl::less<>>;
      ESet data(initial_data.begin(), initial_data.end());

      std::vector<int> tab(test_data.begin(), test_data.end());

      //make sure both data and compare contain same elements
      std::vector<int> data_elements(data.begin(), data.end());
      std::vector<int> compare_data_elements(compare.begin(), compare.end());

      CHECK(data_elements == compare_data_elements);
      CHECK_EQUAL(data_elements.size(), MAX_SIZE);

      for (std::vector<int>::iterator it = tab.begin(); it != tab.end(); ++it)
      {
        int i = *it;

        //lower_bound
        CHECK_EQUAL(compare.lower_bound(i) == compare.end(), data.lower_bound(i) == data.end());
        //if both end, or none
        if ((compare.lower_bound(i) == compare.end()) == (data.lower_bound(i) == data.end()))
        {
          //if both are not end
          if ((data.lower_bound(i) != data.end()) && (compare.lower_bound(i) != compare.end()))
          {
            CHECK((*compare.lower_bound(i)) == (*data.lower_bound(i)));
          }

          ETL_OR_STD::pair<CSet::const_iterator, CSet::const_iterator> stlret = compare.equal_range(i);
          ETL_OR_STD::pair<ESet::const_iterator, ESet::const_iterator> etlret = data.equal_range(Key(i));

          CHECK_EQUAL(stlret.first == compare.end(), etlret.first == data.end());
          if ((stlret.first != compare.end()) && (etlret.first != data.end()))
          {
            CHECK((*stlret.first) == (*etlret.first));
          }
          CHECK_EQUAL(stlret.second == compare.end(), etlret.second == data.end());
          if ((stlret.second != compare.end()) && (etlret.second != data.end()))
          {
            CHECK((*stlret.second) == (*etlret.second));
          }
        }

        //upper_bound
        CHECK_EQUAL(compare.upper_bound(i) == compare.end(), data.upper_bound(i) == data.end());
        //if both end, or none
        if ((compare.upper_bound(i) == compare.end()) == (data.upper_bound(i) == data.end()))
        {
          //if both are not end
          if ((data.upper_bound(i) != data.end()) && (compare.upper_bound(i) != compare.end()))
          {
            CHECK((*compare.upper_bound(i)) == (*data.upper_bound(i)));
          }
        }
      }
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_bug)
    {
      using Data = etl::multiset<int, 10>;

      int keys[10] = { 3, 2, 1, 0, 3, 0, 3, 0, 2, 2 };

      Data data;

      for (int eltNum = 0; eltNum != 10; ++eltNum)
      {
        data.insert(keys[eltNum]);
      }

      data.erase(2);

      int prv = INT_MAX;
      Data::const_reverse_iterator pos;

      bool pass = true;

      for (pos = data.crbegin(); pos != data.crend(); ++pos)
      {
#include "etl/private/diagnostic_null_dereference_push.h"
        if (*pos > prv)
        {
          pass = false;
          break;
        }

        prv = *pos;
#include "etl/private/diagnostic_pop.h"
      }

      CHECK(pass);
    }

    //*************************************************************************
#if ETL_USING_CPP17 && ETL_HAS_INITIALIZER_LIST && !defined(ETL_TEMPLATE_DEDUCTION_GUIDE_TESTS_DISABLED)
    TEST_FIXTURE(SetupFixture, test_multiset_template_deduction)
    {
      etl::multiset data{ std::string("A"), std::string("B"), std::string("C"), std::string("D"), std::string("E"), std::string("F") };

      auto v = *data.begin();
      using Type = decltype(v);
      CHECK((std::is_same_v<std::string, Type>));

      decltype(data)::const_iterator itr = data.begin();

      CHECK_EQUAL("A", *itr);
      ++itr;
      CHECK_EQUAL("B", *itr);
      ++itr;
      CHECK_EQUAL("C", *itr);
      ++itr;
      CHECK_EQUAL("D", *itr);
      ++itr;
      CHECK_EQUAL("E", *itr);
      ++itr;
      CHECK_EQUAL("F", *itr);
    }
#endif

    //*************************************************************************
#if ETL_HAS_INITIALIZER_LIST
    TEST_FIXTURE(SetupFixture, test_make_multiset)
    {
      auto data = etl::make_multiset< std::string>(std::string("A"), std::string("B"), std::string("C"), std::string("D"), std::string("E"), std::string("F"));

      auto v = *data.begin();
      using Type = decltype(v);
      CHECK((std::is_same<std::string, Type>::value));

      decltype(data)::const_iterator itr = data.begin();

      CHECK_EQUAL("A", *itr);
      ++itr;
      CHECK_EQUAL("B", *itr);
      ++itr;
      CHECK_EQUAL("C", *itr);
      ++itr;
      CHECK_EQUAL("D", *itr);
      ++itr;
      CHECK_EQUAL("E", *itr);
      ++itr;
      CHECK_EQUAL("F", *itr);
    }
#endif

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_contains)
    {
      std::array<int, 6U> initial = { 1, 2, 3, 4, 5, 6 };
      etl::multiset<int, 6U, etl::less<>> data(initial.begin(), initial.end());

      CHECK(data.contains(1));
      CHECK(!data.contains(99));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_contains_using_transparent_comparator)
    {
      std::array<int, 6U> initial = { 1, 2, 3, 4, 5, 6 };
      etl::multiset<int, 6U, etl::less<>> data(initial.begin(), initial.end());

      CHECK(data.contains(1));
      CHECK(data.contains(Key(1)));

      CHECK(!data.contains(99));
      CHECK(!data.contains(Key(99)));
    }
  };
}