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- // 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();
- }
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