1// Boost.TypeErasure library
2//
3// Copyright 2012 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/builtin.hpp>
13#include <boost/type_erasure/operators.hpp>
14#include <boost/type_erasure/any_cast.hpp>
15#include <boost/type_erasure/deduced.hpp>
16#include <boost/type_erasure/same_type.hpp>
17#include <boost/mpl/vector.hpp>
18#include <boost/mpl/assert.hpp>
19#include <boost/type_traits/remove_pointer.hpp>
20#include <boost/type_traits/is_same.hpp>
21
22#define BOOST_TEST_MAIN
23#include <boost/test/unit_test.hpp>
24
25using namespace boost::type_erasure;
26
27BOOST_AUTO_TEST_CASE(test_deduce_dereference)
28{
29 typedef ::boost::mpl::vector<
30 copy_constructible<>,
31 typeid_<_a>,
32 dereferenceable<deduced<boost::remove_pointer<_self> >&>,
33 same_type<deduced<boost::remove_pointer<_self> >, _a>
34 > test_concept;
35 int i;
36
37 any<test_concept> x(&i);
38 any<test_concept, _a&> y(*x);
39 BOOST_CHECK_EQUAL(&any_cast<int&>(y), &i);
40}
41
42BOOST_MPL_ASSERT((
43 boost::is_same<
44 deduced<boost::remove_pointer<_self> >::type,
45 deduced<boost::remove_pointer<_self> > >));
46
47BOOST_MPL_ASSERT((
48 boost::is_same<deduced<boost::remove_pointer<int*> >::type, int >));
49
50BOOST_AUTO_TEST_CASE(test_duplicate)
51{
52 typedef ::boost::mpl::vector<
53 copy_constructible<>,
54 typeid_<_a>,
55 dereferenceable<deduced<boost::remove_pointer<_self> >&>,
56 same_type<deduced<boost::remove_pointer<_self> >, _a>,
57 same_type<deduced<boost::remove_pointer<_self> >, _a>
58 > test_concept;
59 int i;
60
61 any<test_concept> x(&i);
62 any<test_concept, _a&> y(*x);
63 BOOST_CHECK_EQUAL(&any_cast<int&>(y), &i);
64}
65
66BOOST_AUTO_TEST_CASE(test_convert)
67{
68 typedef ::boost::mpl::vector<
69 copy_constructible<>,
70 typeid_<_a>,
71 dereferenceable<deduced<boost::remove_pointer<_self> >&>,
72 same_type<deduced<boost::remove_pointer<_self> >, _a>
73 > test_concept_src;
74 typedef ::boost::mpl::vector<
75 copy_constructible<_b>,
76 typeid_<_c>,
77 dereferenceable<deduced<boost::remove_pointer<_b> >&, _b>,
78 same_type<deduced<boost::remove_pointer<_b> >, _c>
79 > test_concept_dest;
80 int i;
81
82 any<test_concept_src> x1(&i);
83 any<test_concept_src, _a&> y1(*x1);
84 any<test_concept_dest, _b> x2(x1);
85 any<test_concept_dest, _c&> y2(*x2);
86 BOOST_CHECK_EQUAL(&any_cast<int&>(y2), &i);
87}
88

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