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

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

Copyright(c) 2015 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
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SOFTWARE.
******************************************************************************/

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

#include "data.h"

#include "../basic_intrusive_forward_list.h"

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

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

namespace
{
  class ItemDCNode : public etl::basic_intrusive_forward_list_node
  {
  public:

    ItemDCNode(const std::string& text)
      : data(text)
    {
    }

    ItemDC data;
  };

  class ItemNDCNode : public etl::basic_intrusive_forward_list_node
  {
  public:

    ItemNDCNode(const std::string& text)
      : data(text)
    {
    }

    bool operator <(const ItemNDCNode& other) const
    {
      return data < other.data;
    }

    ItemNDC data;
  };

  bool operator ==(const ItemDCNode& lhs, const ItemDCNode& rhs)
  {
    return lhs.data == rhs.data;
  }

  bool operator ==(const ItemNDCNode& lhs, const ItemNDCNode& rhs)
  {
    return lhs.data == rhs.data;
  }

  std::ostream& operator << (std::ostream& os, const ItemNDCNode& node)
  {
    os << node.data;
    return os;
  }

  struct CompareItemNDCNode
  {
    bool operator ()(const ItemNDCNode& lhs, const ItemNDCNode& rhs) const
    {
      return lhs.data < rhs.data;
    }
  };

  struct EqualItemNDCNode
  {
    bool operator ()(const ItemNDCNode& lhs, const ItemNDCNode& rhs) const
    {
      return lhs.data == rhs.data;
    }
  };
}

namespace 
{		
  SUITE(test_forward_list)
  {   
    typedef etl::basic_intrusive_forward_list DataDC;
    typedef etl::basic_intrusive_forward_list DataNDC;

    typedef std::vector<ItemNDCNode> InitialDataNDC;

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

    bool are_equal;

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_default_constructor)
    {
      DataNDC data;
      DataNDC data1;

      CHECK(data.empty());
      CHECK(data1.empty());
    }

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

      CHECK(!data.empty());
    }

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

      CHECK(data.begin() == data.end());
    }

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

      InitialDataNDC::iterator isorted = sorted_data.begin();
      DataNDC::iterator        idata   = data.begin();

      while (isorted != sorted_data.end())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *isorted;
        CHECK(are_equal);
        ++idata;
        ++isorted;
      }
    }

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

      InitialDataNDC::const_iterator isorted = sorted_data.cbegin();
      DataNDC::const_iterator        idata = data.cbegin();

      while (isorted != sorted_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *isorted;
        CHECK(are_equal);
        ++idata;
        ++isorted;
      }
    }

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

      CHECK(data.empty());
    }

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

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

      InitialDataNDC::const_iterator isorted = sorted_data.cbegin();
      DataNDC::const_iterator        idata = data.cbegin();

      while (isorted != sorted_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *isorted;
        CHECK(are_equal);
        ++idata;
        ++isorted;
      }
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_insert_after_position_value)
    {
      ItemNDCNode INSERT_VALUE1 = ItemNDCNode("1");
      ItemNDCNode INSERT_VALUE2 = ItemNDCNode("2");

      std::vector<ItemNDCNode> compare_data(sorted_data.begin(), sorted_data.end());
      DataNDC data(sorted_data.begin(), sorted_data.end());

      size_t offset = 2;

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

      std::vector<ItemNDCNode>::iterator i_compare_data = compare_data.begin();
      std::advance(i_compare_data, offset + 1);

      data.insert_after(i_data, INSERT_VALUE1);
      compare_data.insert(i_compare_data, INSERT_VALUE1);

      InitialDataNDC::const_iterator icompare = compare_data.cbegin();
      DataNDC::const_iterator        idata    = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }
      CHECK_EQUAL(compare_data.size(), std::distance(data.begin(), data.end()));
    }

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

      size_t final_size = test1.size() + test2.size();

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

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

      InitialDataNDC::const_iterator icompare = compare.cbegin();
      DataNDC::const_iterator        idata = data.cbegin();

      while (icompare != compare.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }

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

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

      std::vector<ItemNDCNode>::iterator icd = compare.begin();
      DataNDC::iterator id = data.begin();

      std::advance(icd, 4);
      std::advance(id, 3);

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

      icompare = compare.cbegin();
      idata    = data.cbegin();

      while (icompare != compare.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }

      CHECK_EQUAL(final_size, std::distance(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_push_front)
    {
      std::list<ItemNDCNode> compare_data;
      DataNDC data;

      ItemNDCNode node1("1");
      ItemNDCNode node2("2");
      ItemNDCNode node3("3");
      ItemNDCNode node4("4");
      ItemNDCNode node5("5");
      ItemNDCNode node6("6");

      compare_data.push_front(node1);
      compare_data.push_front(node2);
      compare_data.push_front(node3);
      compare_data.push_front(node4);
      compare_data.push_front(node5);
      compare_data.push_front(node6);

      data.push_front(node1);
      data.push_front(node2);
      data.push_front(node3);
      data.push_front(node4);
      data.push_front(node5);
      data.push_front(node6);

      std::list<ItemNDCNode>::const_iterator icompare = compare_data.cbegin();
      DataNDC::const_iterator idata = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }
      CHECK_EQUAL(6, std::distance(data.begin(), data.end()));
    }

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

      ItemNDCNode node1("1");
      ItemNDCNode node2("2");
      ItemNDCNode node3("3");
      ItemNDCNode node4("4");
      ItemNDCNode node5("5");
      ItemNDCNode node6("6");

      data.push_front(node1);
      data.push_front(node2);
      data.push_front(node3);
      data.push_front(node4);
      data.push_front(node5);
      data.push_front(node6);

      CHECK_EQUAL(6, std::distance(data.begin(), data.end()));
      CHECK(!data.empty());

      data.pop_front();
      data.pop_front();
      data.pop_front();
      data.pop_front();
      data.pop_front();

      CHECK_EQUAL(1, std::distance(data.begin(), data.end()));
      CHECK(!data.empty());

      data.pop_front();

      CHECK_EQUAL(0, std::distance(data.begin(), data.end()));
      CHECK(data.empty());
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_after_single)
    {
      std::vector<ItemNDCNode> 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);

      std::vector<ItemNDCNode>::iterator i_compare_data = compare_data.begin();
      std::advance(i_compare_data, 3);

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

      std::vector<ItemNDCNode>::const_iterator icompare = compare_data.cbegin();
      DataNDC::const_iterator idata = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }

      CHECK(*i_compare_data == i_data.ref_cast<ItemNDCNode>());

      i_compare_data = compare_data.erase(compare_data.begin() + 1);
      i_data         = data.erase_after(data.begin());

      icompare = compare_data.cbegin();
      idata    = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }

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

      // Move to the last value and erase.
      i_compare_data = compare_data.begin() + 1;
      i_compare_data = compare_data.erase(i_compare_data);

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

      icompare = compare_data.cbegin();
      idata    = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }

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

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_after_range)
    {
      std::vector<ItemNDCNode> 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, 5);

      std::vector<ItemNDCNode>::iterator i_compare_data_1 = compare_data.begin();
      std::advance(i_compare_data_1, 3);

      std::vector<ItemNDCNode>::iterator i_compare_data_2 = compare_data.begin();
      std::advance(i_compare_data_2, 5);

      std::vector<ItemNDCNode>::iterator i_compare_result = compare_data.erase(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.ref_cast<ItemNDCNode>());

      std::vector<ItemNDCNode>::const_iterator icompare = compare_data.cbegin();
      DataNDC::const_iterator idata = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }
      
      CHECK_EQUAL(compare_data.size(), std::distance(data.begin(), data.end()));
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_erase_after_range_end)
    {
      std::vector<ItemNDCNode> 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);

      std::vector<ItemNDCNode>::iterator i_compare_data = compare_data.begin();
      std::advance(i_compare_data, 5);

      std::vector<ItemNDCNode>::iterator i_compare_result = compare_data.erase(i_compare_data, compare_data.end());

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

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

      std::vector<ItemNDCNode>::const_iterator icompare = compare_data.cbegin();
      DataNDC::const_iterator idata = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }

      CHECK_EQUAL(compare_data.size(), std::distance(data.begin(), data.end()));
        
      icompare = compare_data.cbegin();
      idata    = data.cbegin();

      while (icompare != compare_data.cend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *icompare;
        CHECK(are_equal);
        ++idata;
        ++icompare;
      }

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

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

      CHECK_EQUAL(sorted_data.front(), data.front<ItemNDCNode>());
    }

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

      InitialDataNDC::const_reverse_iterator isorted = sorted_data.crbegin();
      DataNDC::const_iterator idata = data.cbegin();

      while (isorted != sorted_data.crend())
      {
        const ItemNDCNode& item = idata.ref_cast<ItemNDCNode>();
        are_equal = item == *isorted;
        CHECK(are_equal);
        ++idata;
        ++isorted;
      }
    }
  };
}