safe_numerics/test/test_assignment.hpp

103 lines
3.0 KiB
C++

#ifndef BOOST_TEST_ASSIGNMENT_HPP
#define BOOST_TEST_ASSIGNMENT_HPP
// Copyright (c) 2015 Robert Ramey
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <iostream>
#include <boost/core/demangle.hpp>
#include <boost/safe_numerics/safe_integer.hpp>
#include <boost/safe_numerics/range_value.hpp>
template<class T1, class T2>
bool test_assignment(
T1 t1,
T2 t2,
const char *at1,
const char *at2,
char expected_result
){
std::cout << "testing " << std::endl;
{
std::cout << "safe<" << at1 << "> = " << at2 << std::endl;
// std::cout << boost::core::demangle(typeid(t1).name()) << " = " << at2 << std::endl;
safe_t<T2> s2(t2);
static_assert(
boost::safe_numerics::is_safe<safe_t<T1> >::value,
"safe_t not safe!"
);
try{
t1 = s2;
if(expected_result == 'x'){
std::cout
<< "failed to detect error in assignment "
<< boost::core::demangle(typeid(t1).name())
<< " = "
<< at2
<< std::endl;
t1 = s2;
return false;
}
}
catch(const std::exception &){
if(expected_result == '.'){
std::cout
<< "erroneously detected error in assignment "
<< boost::core::demangle(typeid(t1).name())
<< " = "
<< at2
<< std::endl;
try{
t1 = s2;
}
catch(const std::exception &){}
return false;
}
}
}
{
safe_t<T1> s1(t1);
safe_t<T2> s2(t2);
std::cout
<< "safe<" << boost::core::demangle(typeid(t1).name()) << ">"
<< " = "
<< "safe<" << at2 << '>' << std::endl;
try{
s1 = s2;
if(expected_result == 'x'){
std::cout
<< "failed to detect error in assignment "
<< "safe<" << boost::core::demangle(typeid(t1).name()) << ">"
<< " = "
<< at2
<< std::endl;
s1 = s2;
return false;
}
}
catch(const std::exception &){
if(expected_result == '.'){
std::cout
<< "erroneously detected error in assignment "
<< "safe<" << boost::core::demangle(typeid(t1).name()) << ">"
<< " = "
<< at2
<< std::endl;
try{
s1 = t2;
}
catch(const std::exception &){}
return false;
}
}
}
return true; // correct result
}
#endif // BOOST_TEST_ASSIGNMENT_HPP