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

Embedded Template Library.

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
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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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 "../list.h"

#include <algorithm>
#include <array>
#include <list>
#include <vector>

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

    typedef etl::list<int, SIZE> Data;

    typedef std::list<int>   CompareData;
    typedef std::vector<int> InitialData;

    InitialData unsorted_data;
    InitialData sorted_data;
    InitialData non_unique_data;
    InitialData small_data;

    bool are_equal;

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

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

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

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

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

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

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

      std::array<int, INITIAL_SIZE> compare_data;
      compare_data.fill(INITIAL_VALUE);

      Data data(INITIAL_SIZE, INITIAL_VALUE);

      CHECK(data.size() == INITIAL_SIZE);
      CHECK(!data.empty());

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

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_constructor_size_value_excess)
    {
      CHECK_THROW(Data data(SIZE + 1, 1), etl::list_full);
    }

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

      CHECK_EQUAL(SIZE, data.size());
      CHECK(!data.empty());
    }

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

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

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

      other_data.pop_front();
      CHECK_EQUAL(compare_data.size(), data.size());
      CHECK_EQUAL(compare_data.size() - 1, other_data.size());

      other_data.pop_back();
      CHECK_EQUAL(compare_data.size(), data.size());
      CHECK_EQUAL(compare_data.size() - 2, other_data.size());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_iterator)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data 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)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data 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_reverse_iterator)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data data(compare_data.begin(), compare_data.end());

      are_equal = std::equal(data.rbegin(), data.rend(), compare_data.rbegin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_const_reverse_iterator)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data data(compare_data.begin(), compare_data.end());

      are_equal = std::equal(data.crbegin(), data.crend(), compare_data.crbegin());

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_resize_up)
    {
      const size_t INITIAL_SIZE = 4;
      const size_t NEW_SIZE     = 8;

      Data data(INITIAL_SIZE);
      data.resize(NEW_SIZE);

      CHECK_EQUAL(data.size(), NEW_SIZE);
    }

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

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

      CompareData 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;
      Data data(INITIAL_SIZE);

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_resize_down)
    {
      const size_t INITIAL_SIZE = 4;
      const size_t NEW_SIZE     = 2;

      Data data(INITIAL_SIZE);
      data.resize(NEW_SIZE);

      CHECK_EQUAL(data.size(), NEW_SIZE);
    }

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

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assign_range)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data 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());

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

      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 int VALUE = 1;

      CompareData compare_data(INITIAL_SIZE, VALUE);
      Data data;

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

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

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

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assign_size_value_excess)
    {
      const int VALUE = 1;

      Data data;

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_position_value)
    {
      const size_t INITIAL_SIZE = 4;
      const int VALUE = 1;
      const int INSERT_VALUE = 2;

      CompareData compare_data(INITIAL_SIZE, VALUE);
      Data data(INITIAL_SIZE, VALUE);

      size_t offset = 2;

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

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

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

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

      CHECK(are_equal);

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

      data.insert(i_data, VALUE);
      compare_data.insert(i_compare_data, VALUE);

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

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_range)
    {
      std::vector<int> test1 = { 1, 2, 3, 4, 5 };
      std::vector<int> test2 = { 6, 7, 8, 9, 10 };

      CompareData compare_data(test1.begin(), test1.end());
      Data data(test1.begin(), test1.end());

      compare_data.insert(compare_data.begin(), test2.begin(), test2.end());
      data.insert(data.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());

      compare_data.insert(compare_data.end(), test2.begin(), test2.end());
      data.insert(data.end(), 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());

      CompareData::iterator icd = compare_data.begin();
      Data::iterator         id = data.begin();

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

      compare_data.insert(icd, test2.begin(), test2.end());
      data.insert(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)
    {
      CompareData compare_data;
      Data data;

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

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

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

      CHECK(are_equal);
    }

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

      CHECK_NO_THROW(data.push_front(1));
      CHECK_NO_THROW(data.push_front(2));
      CHECK_NO_THROW(data.push_front(3));
      CHECK_NO_THROW(data.push_front(4));
      CHECK_NO_THROW(data.push_front(5));
      CHECK_NO_THROW(data.push_front(6));
      CHECK_NO_THROW(data.push_front(7));
      CHECK_NO_THROW(data.push_front(8));
      CHECK_NO_THROW(data.push_front(9));
      CHECK_NO_THROW(data.push_front(10));

      CHECK_THROW(data.push_front(11) , etl::list_full);
    }

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

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

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

      for (size_t i = 0; i < 2 * data.max_size(); ++i)
      {
        CHECK_NO_THROW(data.push_front(i));
        data.pop_back();
      }

      CHECK(data.empty());
    }

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

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

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

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_push_back)
    {
      CompareData compare_data;
      Data data;

      compare_data.push_back(1);
      compare_data.push_back(2);
      compare_data.push_back(3);
      compare_data.push_back(4);
      compare_data.push_back(5);
      compare_data.push_back(6);

      CHECK_NO_THROW(data.push_back(1));
      CHECK_NO_THROW(data.push_back(2));
      CHECK_NO_THROW(data.push_back(3));
      CHECK_NO_THROW(data.push_back(4));
      CHECK_NO_THROW(data.push_back(5));
      CHECK_NO_THROW(data.push_back(6));

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

      CHECK(are_equal);
    }
    
    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_push_back_excess)
    {
      Data data;

      data.push_back(1);
      data.push_back(2);
      data.push_back(3);
      data.push_back(4);
      data.push_back(5);
      data.push_back(6);
      data.push_back(7);
      data.push_back(8);
      data.push_back(9);
      data.push_back(10);

      CHECK_THROW(data.push_back(11), etl::list_full);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_pop_back)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data data(sorted_data.begin(), sorted_data.end());

      compare_data.pop_back();
      compare_data.pop_back();

      data.pop_back();
      data.pop_back();

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

      CHECK(are_equal);
    }

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

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

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

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

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

      CHECK(are_equal);

      are_equal = i_data == data.begin();
      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(i_compare_data);

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

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

      CHECK(are_equal);
      are_equal = i_data == data.end();
      CHECK(are_equal);
    }

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

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

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

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

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

      compare_data.erase(i_compare_data_1, i_compare_data_2);

      data.erase(i_data_1, i_data_2);

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

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_all)
    {
      Data data(sorted_data.begin(), sorted_data.end());

      data.erase(data.begin(), data.end());

      CHECK(data.empty());

      // Check that it is still in a valid state.
      data.push_back(1);
      CHECK(!data.empty());
      CHECK_EQUAL(1, data.size());
    }

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

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_front_const)
    {
      const CompareData compare_data(sorted_data.begin(), sorted_data.end());
      const Data data(sorted_data.begin(), sorted_data.end());

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_back)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data data(sorted_data.begin(), sorted_data.end());

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_back_const)
    {
      const CompareData compare_data(sorted_data.begin(), sorted_data.end());
      const Data data(sorted_data.begin(), sorted_data.end());

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_assignment)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data data(sorted_data.begin(), sorted_data.end());
      Data 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_unique)
    {
      CompareData compare_data(non_unique_data.begin(), non_unique_data.end());
      Data 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)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data data(sorted_data.begin(), sorted_data.end());

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

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

      CHECK(are_equal);
    }

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

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

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

      CHECK(are_equal);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_reverse)
    {
      CompareData compare_data(sorted_data.begin(), sorted_data.end());
      Data 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)
    {
      CompareData compare_data(unsorted_data.begin(), unsorted_data.end());
      Data 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);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_swap)
    {
      Data first(unsorted_data.begin(), unsorted_data.end());
      Data second(small_data.begin(),   small_data.end());

      swap(first, second);

      are_equal = std::equal(first.begin(), first.end(), small_data.begin());
      CHECK(are_equal);

      are_equal = std::equal(second.begin(), second.end(), unsorted_data.begin());
      CHECK(are_equal);
    }
  };
}