1// Boost.TypeErasure library
2//
3// Copyright 2011 Steven Watanabe
4//
5// Distributed under the Boost Software License Version 1.0. (See
6// accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt)
8//
9// $Id$
10
11#include <boost/type_erasure/any.hpp>
12#include <boost/type_erasure/tuple.hpp>
13#include <boost/type_erasure/builtin.hpp>
14#include <boost/type_erasure/operators.hpp>
15#include <boost/type_erasure/any_cast.hpp>
16#include <boost/mpl/vector.hpp>
17
18#define BOOST_TEST_MAIN
19#include <boost/test/unit_test.hpp>
20
21using namespace boost::type_erasure;
22
23template<class T = _self>
24struct common : ::boost::mpl::vector<
25 destructible<T>,
26 copy_constructible<T>,
27 typeid_<T>
28> {};
29
30BOOST_AUTO_TEST_CASE(test_value)
31{
32 typedef ::boost::mpl::vector<common<>, incrementable<> > test_concept;
33 any<test_concept> x(1);
34 ++x;
35 BOOST_CHECK_EQUAL(any_cast<int>(x), 2);
36 any<test_concept> y(x++);
37 BOOST_CHECK_EQUAL(any_cast<int>(x), 3);
38 BOOST_CHECK_EQUAL(any_cast<int>(y), 2);
39}
40
41BOOST_AUTO_TEST_CASE(test_reference)
42{
43 typedef ::boost::mpl::vector<common<>, incrementable<> > test_concept;
44 int i = 1;
45 any<test_concept, _self&> x(i);
46 ++x;
47 BOOST_CHECK_EQUAL(i, 2);
48 any<test_concept> y(x++);
49 BOOST_CHECK_EQUAL(i, 3);
50 BOOST_CHECK_EQUAL(any_cast<int>(y), 2);
51}
52

source code of boost/libs/type_erasure/test/test_increment.cpp