etl/test/test_fixed_iterator.cpp

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

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

Copyright(c) 2014 John Wellbelove

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******************************************************************************/

#include "unit_test_framework.h"
#include <vector>
#include <ostream>

#include "etl/fixed_iterator.h"

template <typename TIterator>
std::ostream& operator << (std::ostream& os, const etl::fixed_iterator<TIterator>& fi)
{
  os << TIterator(fi);

  return os;
}

namespace 
{		
  SUITE(test_fixed_iterator)
  {
    //*************************************************************************
    TEST(test_default_constructor)
    {
      etl::fixed_iterator<const int*> fi;

      CHECK_EQUAL((const int*)0, fi);
    }

    //*************************************************************************
    TEST(test_copy_constructor)
    {
      int a{};

      etl::fixed_iterator<const int*> fi1(&a);
      etl::fixed_iterator<const int*> fi2(fi1);

      CHECK_EQUAL(fi1, fi2);
    }

    //*************************************************************************
    TEST(test_constructor)
    {
      int a{};

      etl::fixed_iterator<const int*> fi(&a);

      CHECK_EQUAL(&a, fi);
    }

    //*************************************************************************
    TEST(test_make)
    {
      int a{};

      etl::fixed_iterator<const int*> fi = &a;

      CHECK_EQUAL(&a, fi);
    }

    //*************************************************************************
    TEST(test_increment)
    {
      int compare[] = { 1, 2, 3, 4 };

      etl::fixed_iterator<const int*> fi = &compare[1];

      for (int i = 0; i < 10; ++i)
      {
        CHECK_EQUAL(compare[1], *fi);
        ++fi;
        fi++;
      }
    }

    //*************************************************************************
    TEST(test_member_dereference_operator)
    {
      struct Test
      {
        int a;
        int b;
      } test = { 1, 2 };

      etl::fixed_iterator<Test*> fi(&test);

      CHECK_EQUAL(test.a, fi->a);
      CHECK_EQUAL(test.b, fi->b);

      *fi = { 3, 4 };

      CHECK_EQUAL(test.a, fi->a);
      CHECK_EQUAL(test.b, fi->b);
    }

    //*************************************************************************
    TEST(test_conversion_operator)
    {
      int a{};

      etl::fixed_iterator<const int*> fi(&a);

      CHECK_EQUAL(&a, fi);
    }

    //*************************************************************************
    TEST(test_operator_plus_equals)
    {
      int compare[] = { 1, 2, 3, 4 };

      etl::fixed_iterator<const int*> fi = &compare[1];

      for (int i = 0; i < 10; ++i)
      {
        CHECK_EQUAL(compare[1], *fi);
        fi += 1;
      }
    }

    //*************************************************************************
    TEST(test_operator_plus)
    {
      int compare[] = { 1, 2, 3, 4 };

      etl::fixed_iterator<const int*> fi = &compare[1];

      for (int i = 0; i < 10; ++i)
      {
        CHECK_EQUAL(compare[1], *fi);
        fi = fi + 1;
      }
    }

    //*************************************************************************
    TEST(test_decrement)
    {
      int compare[] = { 1, 2, 3, 4 };

      etl::fixed_iterator<const int*> fi = &compare[1];

      for (int i = 0; i < 10; ++i)
      {
        CHECK_EQUAL(compare[1], *fi);
        --fi;
        fi--;
      }
    }

    //*************************************************************************
    TEST(test_operator_minus_equals)
    {
      int compare[] = { 1, 2, 3, 4 };

      etl::fixed_iterator<const int*> fi = &compare[1];

      for (int i = 0; i < 10; ++i)
      {
        CHECK_EQUAL(compare[1], *fi);
        fi -= 1;
      }
    }

    //*************************************************************************
    TEST(test_operator_minus)
    {
      int compare[] = { 1, 2, 3, 4 };

      etl::fixed_iterator<const int*> fi = &compare[1];

      for (int i = 0; i < 10; ++i)
      {
        CHECK_EQUAL(compare[1], *fi);
        fi = fi - 1;
      }
    }

    //*************************************************************************
    TEST(test_assignment)
    {
      int a{};
      int b{};

      etl::fixed_iterator<int*> fi = &a;
      fi = &b;

      CHECK_EQUAL(&b, fi);

      fi = &a;

      CHECK_EQUAL(&a, fi);
    }

    //*************************************************************************
    TEST(test_equality)
    {
      int a{};
      int b{};

      etl::fixed_iterator<int*> fi1 = &a;
      etl::fixed_iterator<int*> fi2 = &a;
      etl::fixed_iterator<int*> fi3 = &b;

      CHECK(fi1 == fi2);
      CHECK(fi1 != fi3);
    }
  };
}