2 // Copyright (C) 2008-2018 Lorenzo Caminiti
3 // Distributed under the Boost Software License, Version 1.0 (see accompanying
4 // file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
5 // See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
7 // Test old values without BOOST_CONTRACT_OLD macro.
9 #ifndef BOOST_CONTRACT_TEST_OLD_PTR_TYPE
10 #error "must define BOOST_CONTRACT_TEST_OLD_PTR_TYPE"
13 #include "../detail/oteststream.hpp"
14 #include "../detail/counter.hpp"
15 #include <boost/contract/function.hpp>
16 #include <boost/contract/public_function.hpp>
17 #include <boost/contract/base_types.hpp>
18 #include <boost/contract/override.hpp>
19 #include <boost/contract/assert.hpp>
20 #include <boost/contract/old.hpp>
21 #include <boost/contract/check.hpp>
22 #include <boost/detail/lightweight_test.hpp>
25 boost::contract::test::detail::oteststream out;
27 struct i_tag; typedef boost::contract::test::detail::counter<i_tag, int> i_type;
28 struct j_tag; typedef boost::contract::test::detail::counter<j_tag, int> j_type;
31 virtual void swap(i_type& i, j_type& j, boost::contract::virtual_* v = 0);
34 void b::swap(i_type& i, j_type& j, boost::contract::virtual_* v) {
35 BOOST_CONTRACT_TEST_OLD_PTR_TYPE<i_type> old_i = boost::contract::make_old(
36 v, boost::contract::copy_old(v) ?
39 boost::contract::null_old()
41 BOOST_CONTRACT_TEST_OLD_PTR_TYPE<j_type> old_j;
42 boost::contract::check c = boost::contract::public_function(v, this)
44 out << "b::swap::pre" << std::endl;
45 BOOST_CONTRACT_ASSERT(i.value != j.value);
48 out << "b::swap::old" << std::endl;
49 old_j = boost::contract::make_old(v, boost::contract::copy_old(v) ?
50 j_type::eval(j) : boost::contract::null_old());
53 out << "b::swap::post" << std::endl;
54 BOOST_CONTRACT_ASSERT(i.value == old_j->value);
55 BOOST_CONTRACT_ASSERT(j.value == old_i->value);
62 #define BASES public b
65 typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
68 void swap(i_type& i, j_type& j, boost::contract::virtual_* v = 0)
70 boost::contract::check c = boost::contract::public_function<
71 override_swap>(v, &a::swap, this, i, j);
73 out << "a::swap::body" << std::endl;
78 BOOST_CONTRACT_OVERRIDE(swap)
82 typedef boost::contract::test::detail::counter<x_tag, char> x_type;
85 typedef boost::contract::test::detail::counter<y_tag, char> y_type;
87 void swap(x_type& x, y_type& y) {
88 BOOST_CONTRACT_TEST_OLD_PTR_TYPE<x_type> old_x = boost::contract::make_old(
89 boost::contract::copy_old() ?
92 boost::contract::null_old()
94 BOOST_CONTRACT_TEST_OLD_PTR_TYPE<y_type> old_y;
95 boost::contract::check c = boost::contract::function()
97 out << "swap::pre" << std::endl;
98 BOOST_CONTRACT_ASSERT(x.value != y.value);
101 out << "swap::old" << std::endl;
102 old_y = boost::contract::make_old(boost::contract::copy_old() ?
103 y_type::eval(y) : boost::contract::null_old());
106 out << "swap::post" << std::endl;
107 BOOST_CONTRACT_ASSERT(x.value == old_y->value);
108 BOOST_CONTRACT_ASSERT(y.value == old_x->value);
112 out << "swap::body" << std::endl;
119 std::ostringstream ok;
122 x_type x; x.value = 'a';
123 y_type y; y.value = 'b';
127 #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
128 << "swap::pre" << std::endl
130 #ifndef BOOST_CONTRACT_NO_OLDS
131 << "swap::old" << std::endl
133 << "swap::body" << std::endl
134 #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
135 << "swap::post" << std::endl
138 BOOST_TEST(out.eq(ok.str()));
140 #ifndef BOOST_CONTRACT_NO_OLDS
141 #define BOOST_CONTRACT_TEST_old 1u
143 #define BOOST_CONTRACT_TEST_old 0u
146 BOOST_TEST_EQ(x.value, 'b');
147 BOOST_TEST_EQ(x.copies(), BOOST_CONTRACT_TEST_old);
148 BOOST_TEST_EQ(x.evals(), BOOST_CONTRACT_TEST_old);
149 BOOST_TEST_EQ(x.ctors(), x.dtors() + 1); // 1 for local var.
151 BOOST_TEST_EQ(y.value, 'a');
152 BOOST_TEST_EQ(y.copies(), BOOST_CONTRACT_TEST_old);
153 BOOST_TEST_EQ(y.evals(), BOOST_CONTRACT_TEST_old);
154 BOOST_TEST_EQ(y.ctors(), y.dtors() + 1); // 1 for local var.
157 i_type i; i.value = 1;
158 j_type j; j.value = 2;
163 #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
164 << "b::swap::pre" << std::endl
166 #ifndef BOOST_CONTRACT_NO_OLDS
167 << "b::swap::old" << std::endl
169 << "a::swap::body" << std::endl
170 #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
171 << "b::swap::old" << std::endl
172 << "b::swap::post" << std::endl
175 BOOST_TEST(out.eq(ok.str()));
177 BOOST_TEST_EQ(i.value, 2);
178 BOOST_TEST_EQ(i.copies(), BOOST_CONTRACT_TEST_old);
179 BOOST_TEST_EQ(i.evals(), BOOST_CONTRACT_TEST_old);
180 BOOST_TEST_EQ(i.ctors(), i.dtors() + 1); // 1 for local var.
182 BOOST_TEST_EQ(j.value, 1);
183 BOOST_TEST_EQ(j.copies(), BOOST_CONTRACT_TEST_old);
184 BOOST_TEST_EQ(j.evals(), BOOST_CONTRACT_TEST_old);
185 BOOST_TEST_EQ(j.ctors(), j.dtors() + 1); // 1 for local var.
187 #undef BOOST_CONTRACT_TEST_old
188 return boost::report_errors();