etl/test/test_function.cpp

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

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

Copyright(c) 2014 jwellbelove

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

#include "UnitTest++.h"

#include "function.h"

//*****************************************************************************
const int VALUE = 1;
bool function_called   = false;
bool parameter_correct = false;

//*****************************************************************************
// Test data structure.
//*****************************************************************************
struct Data
{
  int d;
};

//*****************************************************************************
// Call the function taking no parameters.
//*****************************************************************************
void call(etl::ifunction<void>& function)
{
  function();
}

//*****************************************************************************
// Call the function taking an int parameter.
//*****************************************************************************
void call(etl::ifunction<int>& function)
{
  function(VALUE);
}

//*****************************************************************************
// Call the function taking a Data parameter.
//*****************************************************************************
void call(etl::ifunction<const Data&>& function)
{
  Data data;
  data.d = VALUE;
  function(data);
}

//*****************************************************************************
// The free function taking no parameters.
//*****************************************************************************
void free_void()
{
  function_called = true;
}

//*****************************************************************************
// The free function taking an int parameter.
//*****************************************************************************
void free_int(int i)
{
  function_called   = true;
  parameter_correct = (i == VALUE);
}

//*****************************************************************************
// The free function taking a Data reference parameter.
//*****************************************************************************
void free_reference(const Data& data)
{
  function_called   = true;
  parameter_correct = (data.d == VALUE);
}

//*****************************************************************************
// The test class with member functions.
//*****************************************************************************
class Test
{
public:

  void member_void()
  {
    function_called = true;
  }

  void member_int(int i)
  {
    function_called = true;
    parameter_correct = (i == VALUE);
  }

  void member_reference(const Data& data)
  {
    function_called = true;
    parameter_correct = (data.d == VALUE);
  }
};

//*****************************************************************************
// Initialises the test results.
//*****************************************************************************
struct SetupFixture
{
  SetupFixture()
  {
    function_called   = false;
    parameter_correct = false;
  }
};

namespace
{		
  SUITE(test_function)
  {
    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_free_void)
    {
      etl::function<void, void> function(free_void);

      call(function);

      CHECK(function_called);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_free_int)
    {
      etl::function<void, int> function(free_int);

      call(function);

      CHECK(function_called);
      CHECK(parameter_correct);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_free_reference)
    {
      etl::function<void, const Data&> function(free_reference);

      call(function);

      CHECK(function_called);
      CHECK(parameter_correct);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_member_void)
    {
      Test test;
      etl::function<Test, void> function(test, &Test::member_void);

      call(function);

      CHECK(function_called);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_member_int)
    {
      Test test;
      etl::function<Test, int> function(test, &Test::member_int);

      call(function);

      CHECK(function_called);
      CHECK(parameter_correct);
    }

    //*************************************************************************
    TEST_FIXTURE(SetupFixture, test_member_reference)
    {
      Test test;
      etl::function<Test, const Data&> function(test, &Test::member_reference);

      call(function);

      CHECK(function_called);
      CHECK(parameter_correct);
    }
  };
}