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

Embedded Template Library.

Copyright(c) 2014 jwellbelove

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of this software and associated documentation files(the "Software"), to deal
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******************************************************************************/

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

#include "../alignment.h"
#include "../type_traits.h"

#include <type_traits>

namespace
{
  struct Data
  {
    int i;
    char c;
    short s[3];
  };

  SUITE(test_alignment)
  {
    //*************************************************************************
    TEST(test_align_at)
    {
      size_t alignment;

      // 1
      typedef etl::align_at<char, 1> align_char_1;
      alignment = etl::alignment_of<align_char_1>::value;
      CHECK_EQUAL(1, alignment);

      // 2
      typedef etl::align_at<char, 2> align_char_2;
      alignment = etl::alignment_of<align_char_2>::value;
      CHECK_EQUAL(2, alignment);

      align_char_2 data2[2];
      CHECK((size_t(&data2[0]) % 2) == 0);
      CHECK((size_t(&data2[1]) % 2) == 0);

      // 4
      typedef etl::align_at<char, 4> align_char_4;
      alignment = etl::alignment_of<align_char_4>::value;
      CHECK_EQUAL(4, alignment);

      align_char_4 data4[2];
      CHECK((size_t(&data4[0]) % 4) == 0);
      CHECK((size_t(&data4[1]) % 4) == 0);

      // 8
      typedef etl::align_at<char, 8> align_char_8;
      alignment = etl::alignment_of<align_char_8>::value;
      CHECK_EQUAL(8, alignment);

      align_char_8 data8[2];
      CHECK((size_t(&data8[0]) % 8) == 0);
      CHECK((size_t(&data8[1]) % 8) == 0);

      // 16
      typedef etl::align_at<char, 16> align_char_16;
      alignment = etl::alignment_of<align_char_16>::value;
      CHECK_EQUAL(16, alignment);

      align_char_16 data16[2];
      CHECK((size_t(&data16[0]) % 16) == 0);
      CHECK((size_t(&data16[1]) % 16) == 0);
    }

    //*************************************************************************
    TEST(test_align_as)
    {
      size_t alignment;
      size_t expected;

      // char
      typedef etl::align_as<char, char> align_char_char;
      alignment = etl::alignment_of<align_char_char>::value;
      expected  = std::alignment_of<char>::value;
      CHECK_EQUAL(expected, alignment);

      // short
      typedef etl::align_as<char, short> align_char_short;
      alignment = etl::alignment_of<align_char_short>::value;
      expected  = std::alignment_of<short>::value;
      CHECK_EQUAL(expected, alignment);

      align_char_short data_short[2];
      CHECK((size_t(&data_short[0].value) % expected) == 0);
      CHECK((size_t(&data_short[1].value) % expected) == 0);

      // int
      typedef etl::align_as<char, int> align_char_int;
      alignment = etl::alignment_of<align_char_int>::value;
      expected  = std::alignment_of<int>::value;
      CHECK_EQUAL(expected, alignment);

      align_char_int data_int[2];
      CHECK((size_t(&data_int[0].value) % expected) == 0);
      CHECK((size_t(&data_int[1].value) % expected) == 0);

      // long
      typedef etl::align_as<char, long> align_char_long;
      alignment = etl::alignment_of<align_char_long>::value;
      expected  = std::alignment_of<long>::value;
      CHECK_EQUAL(expected, alignment);

      align_char_long data_long[2];
      CHECK((size_t(&data_long[0].value) % expected) == 0);
      CHECK((size_t(&data_long[1].value) % expected) == 0);

      // long long
      typedef etl::align_as<char, long long> align_char_long_long;
      alignment = etl::alignment_of<align_char_long_long>::value;
      expected  = std::alignment_of<long long>::value;
      CHECK_EQUAL(expected, alignment);

      align_char_long_long data_long_long[2];
      CHECK((size_t(&data_long_long[0].value) % expected) == 0);
      CHECK((size_t(&data_long_long[1].value) % expected) == 0);

      // double
      typedef etl::align_as<char, double> align_char_double;
      alignment = etl::alignment_of<align_char_double>::value;
      expected  = std::alignment_of<double>::value;
      CHECK_EQUAL(expected, alignment);

      align_char_double data_double[2];
      CHECK((size_t(&data_double[0].value) % expected) == 0);
      CHECK((size_t(&data_double[1].value) % expected) == 0);

      // struct Data
      typedef etl::align_as<char, Data> align_char_data;
      alignment = etl::alignment_of<align_char_data>::value;
      expected  = std::alignment_of<Data>::value;
      CHECK_EQUAL(expected, alignment);

      align_char_data data_data[2];
      CHECK((size_t(&data_data[0].value) % expected) == 0);
      CHECK((size_t(&data_data[1].value) % expected) == 0);
    }
  };
}