1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// Copyright (C) 2008-2018 Lorenzo Caminiti
// Distributed under the Boost Software License, Version 1.0 (see accompanying
// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
// Test assertions skipped when operations to check them missing (e.g., `==`).
// C++17 warning from Boost.Bind.
#define _SILENCE_CXX17_ADAPTOR_TYPEDEFS_DEPRECATION_WARNING
#include <boost/contract/function.hpp>
#include <boost/contract/check.hpp>
#include <boost/contract/assert.hpp>
#include <boost/contract/call_if.hpp>
#include <boost/bind.hpp>
#include <boost/type_traits/has_equal_to.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <functional>
#include <vector>
unsigned equal_skips;
template<typename T>
void push_back(std::vector<T>& vect, T const& value) {
boost::contract::check c = boost::contract::function()
.postcondition([&] {
BOOST_CONTRACT_ASSERT(
boost::contract::condition_if<boost::has_equal_to<T> >(
boost::bind(std::equal_to<T>(), boost::cref(vect.back()),
boost::cref(value))
)
);
if(!boost::has_equal_to<T>::value) ++equal_skips;
})
;
vect.push_back(value);
}
struct j { // Type without operator==.
explicit j(int /* i */) {}
};
int main() {
std::vector<int> vi;
equal_skips = 0;
push_back(vi, 123);
BOOST_TEST_EQ(equal_skips, 0u);
unsigned const cnt =
#ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
1
#else
0
#endif
;
j jj(456);
std::vector<j> vj;
equal_skips = 0;
push_back(vj, jj);
BOOST_TEST_EQ(equal_skips, cnt);
return boost::report_errors();
}
|
