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

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

Copyright(c) 2021 John Wellbelove

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The above copyright notice and this permission notice shall be included in all
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******************************************************************************/

#include "unit_test_framework.h"

#include "etl/limiter.h"

#include <array>
#include <algorithm>
#include <math.h>

namespace
{
  constexpr size_t Size = 10UL;

  using IntLimiter    = etl::limiter<int>;
  using DoubleLimiter = etl::limiter<double>;

  struct Compare
  {
    bool operator ()(double lhs, double rhs) const
    {
      return fabs(lhs - rhs) < 0.1;
    }
  };

  //***********************************
  const std::array<int, Size> input1 =
  {
    10, 11, 12, 13, 14, 15, 16, 17, 18, 19
  };

  const std::array<int, Size> result1a =
  {
    13, 13, 13, 13, 14, 15, 16, 16, 16, 16
  };

  std::array<int, Size> output1;

  //***********************************
  const std::array<double, Size> input2 =
  {
    10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0
  };

  const std::array<double, Size> result2a =
  {
    13.0, 13.0, 13.0, 13.0, 14.0, 15.0, 16.0, 16.0, 16.0, 16.0
  };

  std::array<double, Size> output2;

  SUITE(test_limiter)
  {
    //*************************************************************************
    TEST(test_int_limiter)
    {
      IntLimiter limiter(13, 16);

      std::transform(input1.begin(), input1.end(), output1.begin(), limiter);

      bool isEqual = std::equal(output1.begin(), output1.end(), result1a.begin());
      CHECK(isEqual);
    }

    //*************************************************************************
    TEST(test_double_limiter)
    {
      DoubleLimiter limiter(13, 16);

      std::transform(input2.begin(), input2.end(), output2.begin(), limiter);

      bool isEqual = std::equal(output2.begin(), output2.end(), result2a.begin(), Compare());
      CHECK(isEqual);
    }
  };
}