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

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

Copyright(c) 2017 jwellbelove

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files(the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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The above copyright notice and this permission notice shall be included in all
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
******************************************************************************/

#include "UnitTest++/UnitTest++.h"

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

#include <iostream>

#include "data.h"

#include "etl/reference_flat_map.h"

namespace
{
  static const size_t SIZE = 10;

  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_map<int, DC, SIZE>  DataDC;
  typedef etl::reference_flat_map<int, NDC, SIZE> DataNDC;
  typedef etl::ireference_flat_map<int, DC>       IDataDC;
  typedef etl::ireference_flat_map<int, NDC>      IDataNDC;

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

  //*************************************************************************
  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;
  }

  SUITE(test_reference_flat_map)
  {
    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");

    DC M0 = DC("A");
    DC M1 = DC("B");
    DC M2 = DC("C");
    DC M3 = DC("D");
    DC M4 = DC("E");
    DC M5 = DC("F");
    DC M6 = DC("G");
    DC M7 = DC("H");
    DC M8 = DC("I");
    DC M9 = DC("J");
    DC M10 = DC("K");
    DC M11 = DC("L");
    DC M12 = DC("M");
    DC M13 = DC("N");
    DC M14 = DC("O");
    DC M15 = DC("P");
    DC M16 = DC("Q");
    DC M17 = DC("R");
    DC M18 = DC("S");
    DC M19 = DC("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<ElementDC, 10> initial_data_dc =
    {
      ElementDC(0, M0), ElementDC(1, M1), ElementDC(2, M2), ElementDC(3, M3), ElementDC(4, M4),
      ElementDC(5, M5), ElementDC(6, M6), ElementDC(7, M7), ElementDC(8, M8), ElementDC(9, M9)
    };

    //*************************************************************************
    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(), size_t(0));
      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_map)
    {
      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_index)
    {
      Compare_DataDC compare_data(initial_data_dc.begin(), initial_data_dc.end());

      DataDC data(initial_data_dc.begin(), initial_data_dc.end());

      CHECK_EQUAL(compare_data[0], data[0]);
      CHECK_EQUAL(compare_data[1], data[1]);
      CHECK_EQUAL(compare_data[2], data[2]);
      CHECK_EQUAL(compare_data[3], data[3]);
      CHECK_EQUAL(compare_data[4], data[4]);
      CHECK_EQUAL(compare_data[5], data[5]);
      CHECK_EQUAL(compare_data[6], data[6]);
      CHECK_EQUAL(compare_data[7], data[7]);
      CHECK_EQUAL(compare_data[8], data[8]);
      CHECK_EQUAL(compare_data[9], data[9]);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_index_value_changed)
    {
      Compare_DataDC compare_data;
      DataDC data;

      DataDC::value_type item(0, M0);

      data.insert(item);
      compare_data[0] = M0;

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

      CHECK(isEqual);

      data[0] = M2;
      compare_data[0] = M2;

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

      CHECK(isEqual);
    }

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

      CHECK_EQUAL(data.at(0), compare_data.at(0));
      CHECK_EQUAL(data.at(1), compare_data.at(1));
      CHECK_EQUAL(data.at(2), compare_data.at(2));
      CHECK_EQUAL(data.at(3), compare_data.at(3));
      CHECK_EQUAL(data.at(4), compare_data.at(4));
      CHECK_EQUAL(data.at(5), compare_data.at(5));
      CHECK_EQUAL(data.at(6), compare_data.at(6));
      CHECK_EQUAL(data.at(7), compare_data.at(7));
      CHECK_EQUAL(data.at(8), compare_data.at(8));
      CHECK_EQUAL(data.at(9), compare_data.at(9));
    }

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

      CHECK_THROW(data.at(10), etl::flat_map_out_of_bounds);
    }

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

      CHECK_EQUAL(data.at(0), compare_data.at(0));
      CHECK_EQUAL(data.at(1), compare_data.at(1));
      CHECK_EQUAL(data.at(2), compare_data.at(2));
      CHECK_EQUAL(data.at(3), compare_data.at(3));
      CHECK_EQUAL(data.at(4), compare_data.at(4));
      CHECK_EQUAL(data.at(5), compare_data.at(5));
      CHECK_EQUAL(data.at(6), compare_data.at(6));
      CHECK_EQUAL(data.at(7), compare_data.at(7));
      CHECK_EQUAL(data.at(8), compare_data.at(8));
      CHECK_EQUAL(data.at(9), compare_data.at(9));
    }

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

      CHECK_THROW(data.at(10), etl::flat_map_out_of_bounds);
    }


    //*************************************************************************
    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;

      ETL_OR_STD::pair<DataNDC::iterator, bool> result;

      DataNDC::value_type item(0, N0);
      result = data.insert(item);
      compare_data.insert(item);

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

      CHECK(isEqual);
      CHECK(result.second);
      CHECK(*result.first == item);

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

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

      CHECK(isEqual);
      CHECK(result.second);
      CHECK(*result.first == item2);

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

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

      CHECK(isEqual);
      CHECK(result.second);
      CHECK(*result.first == item1);

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

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

      ETL_OR_STD::pair<DataNDC::iterator, bool> result1;
      ETL_OR_STD::pair<Compare_DataNDC::iterator, bool> result2;

      DataNDC::value_type item(0, N0);
      result1 = data.insert(item);
      result2 = compare_data.insert(item);

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

      CHECK(isEqual);
      CHECK(result1.second);
      CHECK(*result1.first == item);

      DataNDC::value_type item2(0, N2);
      result1 = data.insert(item2);
      result2 = compare_data.insert(item2);

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

      CHECK(isEqual);
      CHECK(!result1.second);
      CHECK(*result1.first != item2);
    }

    //*************************************************************************
    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);
    }

    //*************************************************************************
    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_map_full);
    }

    //*************************************************************************
    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);
    }

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

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

    //*************************************************************************
    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_single)
    {
      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.begin();
      DataNDC::iterator i_data            = data.begin();

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

      compare_data.erase(i_compare);
      data.erase(i_data);

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

      Compare_DataNDC::iterator i_compare_end = compare_data.begin();
      DataNDC::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);

      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_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(), size_t(0));
    }

    //*************************************************************************
    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);
    }

    //*************************************************************************
    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_const)
    {
      const DataNDC data(initial_data.begin(), initial_data.end());

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

    //*************************************************************************
    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_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_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_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_not_present)
    {
      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;

      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)
    {
      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);
    }
  };
}