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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 call_if with false condition and non-void result type.
#include "../detail/oteststream.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 <sstream>
#include <ios>
boost::contract::test::detail::oteststream out;
struct eq {
typedef bool result_type; // Test non-void result type.
template<typename L, typename R>
result_type operator()(L left, R right) const {
return left == right; // Requires operator==.
}
};
struct x {}; // Doest not have operator==.
int main() {
std::ostringstream ok;
ok << std::boolalpha;
out << std::boolalpha;
x x1, x2;;
out.str("");
out <<
boost::contract::call_if<boost::has_equal_to<x> >(
boost::bind(eq(), x1, x1) // Compiler-error... but not called.
).else_([] { return false; }) // Test else.
<< std::endl;
ok.str(""); ok << false << std::endl;
BOOST_TEST(out.eq(ok.str()));
out.str("");
out <<
boost::contract::call_if<boost::has_equal_to<x> >(
boost::bind(eq(), x1, x2) // Compiler-error... but not called.
).else_([] { return true; })
<< std::endl;
ok.str(""); ok << true << std::endl;
BOOST_TEST(out.eq(ok.str()));
out.str("");
out << // Test "..._c".
boost::contract::call_if_c<boost::has_equal_to<x>::value>(
boost::bind(eq(), x1, x2) // Compiler-error...but not called.
).else_([] { return true; })
<< std::endl;
ok.str(""); ok << true << std::endl;
BOOST_TEST(out.eq(ok.str()));
return boost::report_errors();
}
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