---
:cmock:
  :plugins:
  - # none
  :treat_as:
    FUNCTION_T: PTR

:systest:
  :types: |
    typedef void (*FUNCTION_T)(void);

  :mockable: |
    void takes_function_type( FUNCTION_T myfunc );
    void takes_function_ptr( unsigned int (*func_ptr)(int, char) );
    void takes_const_function_ptr( unsigned int (* const)(int, char) );
    unsigned short (*returns_function_ptr( const char op_code ))( int, long int );

  :source:
    :header: |
      void exercise_function_pointer_param(void);
      unsigned short (*exercise_function_pointer_return( const char op_code ))( int, long int );

      // functions for function pointer tests
      unsigned int dummy_function1(int a, char b);
      unsigned short dummy_function2(int a, long int b);

    :code: |
      /*
       * functions used in tests
       */

      unsigned int dummy_function1(int a, char b)
      {
        // prevent compiler warnings by using everything
        return (unsigned int)a + (unsigned int)b;
      }

      unsigned short dummy_function2(int a, long int b)
      {
        // prevent compiler warnings by using everything
        return (unsigned short)a + (unsigned short)b;
      }

      /*
       * functions executed by tests
       */

      void exercise_function_pointer_param(void)
      {
        takes_function_ptr(dummy_function1);
      }

      unsigned short (*exercise_function_pointer_return( const char op_code ))( int, long int )
      {
        return returns_function_ptr(op_code);
      }

  :tests:
    :common: |
      void setUp(void) {}
      void tearDown(void) {}
    :units:
    - :pass: TRUE
      :should: 'expect a function pointer param'
      :code: |
        test()
        {
          takes_function_ptr_Expect(dummy_function1);
          exercise_function_pointer_param();
        }

    - :pass: TRUE
      :should: 'return a function pointer'
      :code: |
        test()
        {
          returns_function_ptr_ExpectAndReturn('z', dummy_function2);
          TEST_ASSERT_EQUAL_PTR(dummy_function2, exercise_function_pointer_return('z'));
        }


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