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

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

Copyright(c) 2014 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
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The above copyright notice and this permission notice shall be included in all
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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
SOFTWARE.
******************************************************************************/

#include <UnitTest++/UnitTest++.h>
#include "ExtraCheckMacros.h"

#include "data.h"

#include "../forward_list.h"

#include <algorithm>
#include <array>
#include <forward_list>
#include <vector>
#include <string>

namespace 
{		
  SUITE(test_forward_list)
  {
    const size_t SIZE = 10;

    typedef TestDataDC<std::string>  ItemDC;
    typedef TestDataNDC<std::string> ItemNDC;

    typedef etl::forward_list<ItemDC, SIZE>  DataDC;
    typedef etl::forward_list<ItemNDC, SIZE> DataNDC;
    typedef etl::iforward_list<ItemNDC>      IDataNDC;

    typedef std::forward_list<ItemNDC> CompareDataNDC;
    typedef std::vector<ItemNDC> InitialDataNDC;

    InitialDataNDC unsorted_data;
    InitialDataNDC sorted_data;
    InitialDataNDC non_unique_data;
    InitialDataNDC small_data;

    bool are_equal;

    //*************************************************************************
    struct SetupFixture
    {
      SetupFixture()
      {
        unsorted_data   = { ItemNDC("1"), ItemNDC("0"), ItemNDC("3"), ItemNDC("2"), ItemNDC("5"), ItemNDC("4"), ItemNDC("7"), ItemNDC("6"), ItemNDC("9"), ItemNDC("8") };
        sorted_data     = { ItemNDC("0"), ItemNDC("1"), ItemNDC("2"), ItemNDC("3"), ItemNDC("4"), ItemNDC("5"), ItemNDC("6"), ItemNDC("7"), ItemNDC("8"), ItemNDC("9") };
        non_unique_data = { ItemNDC("0"), ItemNDC("0"), ItemNDC("1"), ItemNDC("1"), ItemNDC("2"), ItemNDC("3"), ItemNDC("3"), ItemNDC("3"), ItemNDC("4"), ItemNDC("5") };
        small_data      = { ItemNDC("0"), ItemNDC("1"), ItemNDC("2"), ItemNDC("3"), ItemNDC("4"), ItemNDC("5") };
      }
    };

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

      CHECK(data.empty());
      CHECK_EQUAL(data.max_size(), SIZE);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_constructor_size)
    {
      const size_t INITIAL_SIZE = 4;
      DataDC data(INITIAL_SIZE);

      CHECK(!data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_constructor_size_excess)
    {
      CHECK_THROW(DataDC data(SIZE + 1), etl::forward_list_full);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_constructor_size_value)
    {
      const size_t INITIAL_SIZE = 4;
      const ItemNDC INITIAL_VALUE("1");

      std::array<ItemNDC, INITIAL_SIZE> compare_data = { ItemNDC("1"), ItemNDC("1"), ItemNDC("1"), ItemNDC("1") };

      DataNDC data(INITIAL_SIZE, INITIAL_VALUE);

      CHECK(!data.empty());

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_constructor_range)
    {
      DataNDC data(sorted_data.begin(), sorted_data.end());

      CHECK(!data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_copy_constructor)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());
      DataNDC other_data(data);

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_iterator)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(compare_data.begin(), compare_data.end());

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_const_iterator)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(compare_data.begin(), compare_data.end());

      are_equal = std::equal(data.cbegin(), data.cend(), compare_data.cbegin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_resize_up_value)
    {
      const size_t INITIAL_SIZE = 4;
      const size_t NEW_SIZE     = 8;
      const ItemNDC VALUE("1");

      DataNDC data(INITIAL_SIZE, VALUE);
      data.resize(NEW_SIZE, VALUE);

      CompareDataNDC compare_data(INITIAL_SIZE, VALUE);
      compare_data.resize(NEW_SIZE, VALUE);

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_resize_excess)
    {
      const size_t INITIAL_SIZE = 4;
      DataDC data(INITIAL_SIZE);

      CHECK_THROW(data.resize(data.max_size() + 1), etl::forward_list_full);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_clear)
    {
      DataNDC data(sorted_data.begin(), sorted_data.end());
      data.clear();

      CHECK(data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assign_range)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data;

      // Do it twice. We should only get one copy.
      data.assign(compare_data.begin(), compare_data.end());
      data.assign(compare_data.begin(), compare_data.end());

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assign_size_value)
    {
      const size_t INITIAL_SIZE = 4;
      const ItemNDC VALUE("1");

      CompareDataNDC compare_data(INITIAL_SIZE, VALUE);
      DataNDC data;

      // Do it twice. We should only get one copy.
      data.assign(INITIAL_SIZE, VALUE);
      data.assign(INITIAL_SIZE, VALUE);

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assign_size_value_excess)
    {
      const ItemNDC VALUE("1");

      DataNDC data;

      CHECK_THROW(data.assign(data.max_size() + 1, VALUE), etl::forward_list_full);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_after_position_value)
    {
      const size_t INITIAL_SIZE = 4;
      const ItemNDC VALUE("1");
      const ItemNDC INSERT_VALUE("2");

      CompareDataNDC compare_data(INITIAL_SIZE, VALUE);
      DataNDC data(INITIAL_SIZE, VALUE);

      size_t offset = 2;

      DataNDC::iterator i_data = data.begin();
      std::advance(i_data, offset);

      CompareDataNDC::iterator i_compare_data = compare_data.begin();
      std::advance(i_compare_data, offset);

      data.insert_after(i_data, INSERT_VALUE);
      compare_data.insert_after(i_compare_data, INSERT_VALUE);

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);

      offset = 0;

      i_data = data.begin();
      std::advance(i_data, offset);

      i_compare_data = compare_data.begin();
      std::advance(i_compare_data, offset);

      data.insert_after(i_data, INSERT_VALUE);
      compare_data.insert_after(i_compare_data, INSERT_VALUE);

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_after_range)
    {
      std::vector<ItemNDC> test1 = { ItemNDC("0"), ItemNDC("1"), ItemNDC("2"), ItemNDC("3"), ItemNDC("4") };
      std::vector<ItemNDC> test2 = { ItemNDC("5"), ItemNDC("6"), ItemNDC("7"), ItemNDC("8"), ItemNDC("9") };

      CompareDataNDC compare_data(test1.begin(), test1.end());
      DataNDC data(test1.begin(), test1.end());

      compare_data.insert_after(compare_data.before_begin(), test2.begin(), test2.end());
      data.insert_after(data.before_begin(), test2.begin(), test2.end());

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);

      compare_data.assign(test1.begin(), test1.end());
      data.assign(test1.begin(), test1.end());

      CompareDataNDC::iterator icd = compare_data.begin();
      DataNDC::iterator         id = data.begin();

      std::advance(icd, 3);
      std::advance(id, 3);

      compare_data.insert_after(icd, test2.begin(), test2.end());
      data.insert_after(id, test2.begin(), test2.end());

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_push_front)
    {
      CompareDataNDC compare_data;
      DataNDC data;

      compare_data.push_front(ItemNDC("1"));
      compare_data.push_front(ItemNDC("2"));
      compare_data.push_front(ItemNDC("3"));
      compare_data.push_front(ItemNDC("4"));
      compare_data.push_front(ItemNDC("5"));
      compare_data.push_front(ItemNDC("6"));

      CHECK_NO_THROW(data.push_front(ItemNDC("1")));
      CHECK_NO_THROW(data.push_front(ItemNDC("2")));
      CHECK_NO_THROW(data.push_front(ItemNDC("3")));
      CHECK_NO_THROW(data.push_front(ItemNDC("4")));
      CHECK_NO_THROW(data.push_front(ItemNDC("5")));
      CHECK_NO_THROW(data.push_front(ItemNDC("6")));

      CHECK_EQUAL(6, data.size());
      CHECK_EQUAL(6, std::distance(data.begin(), data.end()));

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

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

      CHECK_NO_THROW(data.push_front(ItemNDC("0")));
      CHECK_NO_THROW(data.push_front(ItemNDC("1")));
      CHECK_NO_THROW(data.push_front(ItemNDC("2")));
      CHECK_NO_THROW(data.push_front(ItemNDC("3")));
      CHECK_NO_THROW(data.push_front(ItemNDC("4")));
      CHECK_NO_THROW(data.push_front(ItemNDC("5")));
      CHECK_NO_THROW(data.push_front(ItemNDC("6")));
      CHECK_NO_THROW(data.push_front(ItemNDC("7")));
      CHECK_NO_THROW(data.push_front(ItemNDC("8")));
      CHECK_NO_THROW(data.push_front(ItemNDC("9")));

      CHECK_THROW(data.push_front(ItemNDC("10")) , etl::forward_list_full);
    }

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

      for (size_t i = 0; i < 2 * data.max_size(); ++i)
      {
        CHECK_NO_THROW(data.push_front(ItemNDC("1")));
        data.pop_front();
      }
      
      CHECK(data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_after_single)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      DataNDC::iterator i_data = data.begin();
      std::advance(i_data, 2);

      CompareDataNDC::iterator i_compare_data = compare_data.begin();
      std::advance(i_compare_data, 2);

      i_compare_data = compare_data.erase_after(i_compare_data);
      i_data         = data.erase_after(i_data);

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
      CHECK(*i_compare_data == *i_data);

      i_compare_data = compare_data.erase_after(compare_data.begin());
      i_data         = data.erase_after(data.begin());

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);

      are_equal = *i_data == *i_compare_data;
      CHECK(are_equal);

      // Move to the last value and erase.
      i_compare_data = compare_data.begin();
      //std::advance(i_compare_data, compare_data.size() - 1);
      i_compare_data = compare_data.erase_after(i_compare_data);

      i_data = data.begin();
      //std::advance(i_data, data.size() - 1);
      i_data = data.erase_after(i_data);

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
      are_equal = *i_data == *i_compare_data;
      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_after_range)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      DataNDC::iterator i_data_1 = data.begin();
      std::advance(i_data_1, 2);

      DataNDC::iterator i_data_2 = data.begin();
      std::advance(i_data_2, 4);

      CompareDataNDC::iterator i_compare_data_1 = compare_data.begin();
      std::advance(i_compare_data_1, 2);

      CompareDataNDC::iterator i_compare_data_2 = compare_data.begin();
      std::advance(i_compare_data_2, 4);

      CompareDataNDC::iterator i_compare_result = compare_data.erase_after(i_compare_data_1, i_compare_data_2);

      DataNDC::iterator i_result = data.erase_after(i_data_1, i_data_2);

      CHECK_EQUAL(*i_compare_result, *i_result);

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());
      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_after_range_end)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      DataNDC::iterator i_data = data.begin();
      std::advance(i_data, 4);

      CompareDataNDC::iterator i_compare_data = compare_data.begin();
      std::advance(i_compare_data, 4);

      CompareDataNDC::iterator i_compare_result = compare_data.erase_after(i_compare_data, compare_data.end());

      DataNDC::iterator i_result = data.erase_after(i_data, data.end());

      CHECK(i_result == data.end());

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());
      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_after_all)
    {
      DataNDC data(sorted_data.begin(), sorted_data.end());

      data.erase_after(data.before_begin(), data.end());

      CHECK(data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_front)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      CHECK_EQUAL(compare_data.front(), data.front());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assignment)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());
      DataNDC other_data;

      other_data = data;

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

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

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assignment_interface)
    {
      DataNDC data1(sorted_data.begin(), sorted_data.end());
      DataNDC data2;

      IDataNDC& idata1 = data1;
      IDataNDC& idata2 = data2;

      idata2 = idata1;

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

      CHECK(isEqual);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_self_assignment)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());
      DataNDC other_data(data);

      other_data = other_data;

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

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

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_unique)
    {
      CompareDataNDC compare_data(non_unique_data.begin(), non_unique_data.end());
      DataNDC data(non_unique_data.begin(), non_unique_data.end());

      compare_data.unique();
      data.unique();

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_remove)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      compare_data.remove(ItemNDC("7"));
      data.remove(ItemNDC("7"));

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_remove_if)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      compare_data.remove_if(std::bind2nd(std::equal_to<ItemNDC>(), ItemNDC("7")));
      data.remove_if(std::bind2nd(std::equal_to<ItemNDC>(), ItemNDC("7")));

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_reverse)
    {
      CompareDataNDC compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      compare_data.reverse();
      data.reverse();

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_sort)
    {
      CompareDataNDC compare_data(unsorted_data.begin(), unsorted_data.end());
      DataNDC data(unsorted_data.begin(), unsorted_data.end());

      compare_data.sort();
      data.sort();

      are_equal = std::equal(data.begin(), data.end(), compare_data.begin());

      CHECK(are_equal);
    }
  };
}