function/test/policy_test.cpp

// Boost.Function library

// Copyright (C) 2001 Doug Gregor (gregod@cs.rpi.edu)
//
// Permission to copy, use, sell and distribute this software is granted
// provided this copyright notice appears in all copies.
// Permission to modify the code and to distribute modified code is granted
// provided this copyright notice appears in all copies, and a notice
// that the code was modified is included with the copyright notice.
//
// This software is provided "as is" without express or implied warranty,
// and with no claim as to its suitability for any purpose.

// For more information, see http://www.boost.org

#define BOOST_INCLUDE_MAIN
#include <boost/test/test_tools.hpp>
#include <cassert>
#include <iostream>
#include <functional>
#include <boost/function.hpp>

using namespace std;
using namespace boost;

struct counting_policy
{
  static int count;

  void precall(function_base*) { count++; }
  void postcall(function_base*) { count+=2; }
};

int counting_policy::count = 0;

int
test_main(int, char*[])
{
  function<int, int, int>::policy<counting_policy>::type f; 

  f = plus<int>();

  BOOST_TEST(5 == f(2,3));
  BOOST_TEST(counting_policy::count==3);

  return 0;
}