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/builtin.hpp>
13#include <boost/type_erasure/operators.hpp>
14#include <boost/type_erasure/any_cast.hpp>
15#include <boost/type_erasure/relaxed.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 copy_constructible<T>,
26 typeid_<T>
27> {};
28
29template<class T>
30T as_rvalue(const T& arg) { return arg; }
31template<class T>
32const T& as_const(const T& arg) { return arg; }
33
34BOOST_AUTO_TEST_CASE(test_implicit) {
35 int i = 4;
36 any<common<>, _self&> x = i;
37 BOOST_CHECK_EQUAL(any_cast<int*>(&x), &i);
38}
39
40BOOST_AUTO_TEST_CASE(test_from_int_with_binding)
41{
42 typedef ::boost::mpl::vector<common<> > test_concept;
43 int i = 4;
44 any<test_concept, _self&> x(i, make_binding<boost::mpl::map<boost::mpl::pair<_self, int> > >());
45 BOOST_CHECK_EQUAL(any_cast<int*>(&x), &i);
46}
47
48BOOST_AUTO_TEST_CASE(test_copy)
49{
50 typedef ::boost::mpl::vector<typeid_<> > test_concept;
51 int i = 4;
52 any<test_concept, _self&> x(i);
53 BOOST_CHECK_EQUAL(any_cast<int*>(&x), &i);
54 any<test_concept, _self&> y(x);
55 BOOST_CHECK_EQUAL(any_cast<int*>(&y), &i);
56 any<test_concept, _self&> z = as_rvalue(arg: x);
57 BOOST_CHECK_EQUAL(any_cast<int*>(&z), &i);
58 any<test_concept, _self&> w = as_const(arg: x);
59 BOOST_CHECK_EQUAL(any_cast<int*>(&w), &i);
60}
61
62BOOST_AUTO_TEST_CASE(test_convert)
63{
64 typedef ::boost::mpl::vector<common<>, typeid_<> > src_concept;
65 typedef ::boost::mpl::vector<typeid_<> > dst_concept;
66 int i = 4;
67 any<src_concept, _self&> x(i);
68 BOOST_CHECK_EQUAL(any_cast<int*>(&x), &i);
69 any<dst_concept, _self&> y(x);
70 BOOST_CHECK_EQUAL(any_cast<int*>(&y), &i);
71 any<dst_concept, _self&> z = as_rvalue(arg: x);
72 BOOST_CHECK_EQUAL(any_cast<int*>(&z), &i);
73 any<dst_concept, _self&> w = as_const(arg: x);
74 BOOST_CHECK_EQUAL(any_cast<int*>(&w), &i);
75}
76
77BOOST_AUTO_TEST_CASE(test_rebind)
78{
79 typedef ::boost::mpl::vector<typeid_<> > src_concept;
80 typedef ::boost::mpl::vector<typeid_<_a> > dst_concept;
81 int i = 4;
82 any<src_concept, _self&> x(i);
83 BOOST_CHECK_EQUAL(any_cast<int*>(&x), &i);
84 any<dst_concept, _a&> y(x);
85 BOOST_CHECK_EQUAL(any_cast<int*>(&y), &i);
86 any<dst_concept, _a&> z = as_rvalue(arg: x);
87 BOOST_CHECK_EQUAL(any_cast<int*>(&z), &i);
88 any<dst_concept, _a&> w = as_const(arg: x);
89 BOOST_CHECK_EQUAL(any_cast<int*>(&w), &i);
90}
91
92BOOST_AUTO_TEST_CASE(test_rebind_and_convert)
93{
94 typedef ::boost::mpl::vector<common<>, typeid_<> > src_concept;
95 typedef ::boost::mpl::vector<typeid_<_a> > dst_concept;
96 int i = 4;
97 any<src_concept, _self&> x(i);
98 BOOST_CHECK_EQUAL(any_cast<int*>(&x), &i);
99 any<dst_concept, _a&> y(x);
100 BOOST_CHECK_EQUAL(any_cast<int*>(&y), &i);
101 any<dst_concept, _a&> z = as_rvalue(arg: x);
102 BOOST_CHECK_EQUAL(any_cast<int*>(&z), &i);
103 any<dst_concept, _a&> w = as_const(arg: x);
104 BOOST_CHECK_EQUAL(any_cast<int*>(&w), &i);
105}
106
107BOOST_AUTO_TEST_CASE(test_rebind_and_convert_with_binding)
108{
109 typedef ::boost::mpl::vector<common<>, incrementable<> > src_concept;
110 typedef ::boost::mpl::vector<common<_a> > dst_concept;
111 typedef ::boost::mpl::map<boost::mpl::pair<_a, _self> > map;
112 typedef ::boost::mpl::map<boost::mpl::pair<_a, int> > types;
113
114 binding<dst_concept> table(make_binding<types>());
115
116 int i = 4;
117 any<src_concept, _self&> x(i);
118 BOOST_CHECK_EQUAL(any_cast<int*>(&x), &i);
119 any<dst_concept, _a&> y(x, make_binding<map>());
120 BOOST_CHECK_EQUAL(any_cast<int*>(&y), &i);
121 any<dst_concept, _a&> z(x, table);
122 BOOST_CHECK_EQUAL(any_cast<int*>(&z), &i);
123
124 any<dst_concept, _a&> cy(as_const(arg: x), make_binding<map>());
125 BOOST_CHECK_EQUAL(any_cast<int*>(&cy), &i);
126 any<dst_concept, _a&> cz(as_const(arg: x), table);
127 BOOST_CHECK_EQUAL(any_cast<int*>(&cz), &i);
128}
129
130BOOST_AUTO_TEST_CASE(test_copy_from_value)
131{
132 typedef ::boost::mpl::vector<destructible<>, typeid_<> > test_concept;
133 any<test_concept> x(4);
134 int* ip = any_cast<int*>(arg: &x);
135 any<test_concept, _self&> y(x);
136 BOOST_CHECK_EQUAL(any_cast<int*>(&y), ip);
137}
138
139BOOST_AUTO_TEST_CASE(test_convert_from_value)
140{
141 typedef ::boost::mpl::vector<common<>, typeid_<> > src_concept;
142 typedef ::boost::mpl::vector<typeid_<> > dst_concept;
143 any<src_concept> x(4);
144 int* ip = any_cast<int*>(arg: &x);
145 any<dst_concept, _self&> y(x);
146 BOOST_CHECK_EQUAL(any_cast<int*>(&y), ip);
147}
148
149BOOST_AUTO_TEST_CASE(test_rebind_from_value)
150{
151 typedef ::boost::mpl::vector<destructible<>, typeid_<> > src_concept;
152 typedef ::boost::mpl::vector<destructible<_a>, typeid_<_a> > dst_concept;
153 any<src_concept> x(4);
154 int* ip = any_cast<int*>(arg: &x);
155 any<dst_concept, _a&> y(x);
156 BOOST_CHECK_EQUAL(any_cast<int*>(&y), ip);
157}
158
159BOOST_AUTO_TEST_CASE(test_rebind_and_convert_from_value)
160{
161 typedef ::boost::mpl::vector<common<>, typeid_<> > src_concept;
162 typedef ::boost::mpl::vector<typeid_<_a> > dst_concept;
163 any<src_concept> x(4);
164 int* ip = any_cast<int*>(arg: &x);
165 any<dst_concept, _a&> y(x);
166 BOOST_CHECK_EQUAL(any_cast<int*>(&y), ip);
167}
168
169BOOST_AUTO_TEST_CASE(test_rebind_and_convert_with_binding_from_value)
170{
171 typedef ::boost::mpl::vector<common<>, incrementable<> > src_concept;
172 typedef ::boost::mpl::vector<common<_a> > dst_concept;
173 typedef ::boost::mpl::map<boost::mpl::pair<_a, _self> > map;
174 typedef ::boost::mpl::map<boost::mpl::pair<_a, int> > types;
175
176 binding<dst_concept> table(make_binding<types>());
177
178 any<src_concept> x(4);
179 int* ip = any_cast<int*>(arg: &x);
180 any<dst_concept, _a&> y(x, make_binding<map>());
181 BOOST_CHECK_EQUAL(any_cast<int*>(&y), ip);
182 any<dst_concept, _a&> z(x, table);
183 BOOST_CHECK_EQUAL(any_cast<int*>(&z), ip);
184}
185

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