138 lines
4.2 KiB
C++
138 lines
4.2 KiB
C++
#ifndef BOOST_TEST_DIVIDE_HPP
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#define BOOST_TEST_DIVIDE_HPP
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// Copyright (c) 2015 Robert Ramey
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <iostream>
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#include <boost/core/demangle.hpp>
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#include <boost/safe_numerics/safe_integer.hpp>
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#include <boost/safe_numerics/range_value.hpp>
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template<class T1, class T2>
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bool test_divide(
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T1 v1,
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T2 v2,
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const char *av1,
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const char *av2,
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char expected_result
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){
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{
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safe_t<T1> t1 = v1;
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using result_type = decltype(t1 / v2);
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std::cout
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<< "safe<" << av1 << "> / " << av2 << " -> "
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<< boost::core::demangle(typeid(result_type).name()) << '\n';
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static_assert(
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boost::safe_numerics::is_safe<safe_t<T1> >::value,
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"safe_t not safe!"
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);
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static_assert(
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boost::safe_numerics::is_safe<result_type>::value,
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"Expression failed to return safe type"
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);
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try{
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// use auto to avoid checking assignment.
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auto result = t1 / v2;
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std::cout << make_result_display(result);
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if(expected_result == 'x'){
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std::cout << " *** failed to detect error in division" << std::endl;
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t1 / v2;
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return false;
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}
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std::cout << std::endl;
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}
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catch(const std::exception &){
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if(expected_result == '.'){
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std::cout << " *** erroneously detected error in division" << std::endl;
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try{
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t1 / v2;
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}
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catch(const std::exception &){}
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return false;
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}
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}
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}
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{
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safe_t<T2> t2 = v2;
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using result_type = decltype(v1 / t2);
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std::cout
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<< "safe<" << av1 << "> / " << av2 << " -> "
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<< boost::core::demangle(typeid(result_type).name()) << '\n';
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static_assert(
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boost::safe_numerics::is_safe<safe_t<T2> >::value,
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"safe_t not safe!"
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);
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static_assert(
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boost::safe_numerics::is_safe<result_type>::value,
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"Expression failed to return safe type"
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);
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try{
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// use auto to avoid checking assignment.
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auto result = v1 / t2;
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std::cout << make_result_display(result);
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if(expected_result == 'x'){
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std::cout << " *** failed to detect error in division " << std::endl;
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v1 / t2;
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return false;
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}
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std::cout << std::endl;
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}
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catch(const std::exception &){
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if(expected_result == '.'){
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std::cout << "*** erroneously detected error in division " << std::endl;
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try{
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v1 / t2;
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}
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catch(const std::exception &){}
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// assert(result == unsafe_result);
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return false;
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}
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}
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}
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{
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safe_t<T1> t1 = v1;
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safe_t<T2> t2 = v2;
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using result_type = decltype(t1 / t2);
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std::cout
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<< "testing safe<" << av1 << "> / safe<" << av2 << "> -> "
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<< boost::core::demangle(typeid(result_type).name()) << '\n';
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static_assert(
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boost::safe_numerics::is_safe<result_type>::value,
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"Expression failed to return safe type"
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);
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try{
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// use auto to avoid checking assignment.
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auto result = t1 / t2;
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std::cout << make_result_display(result);
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if(expected_result == 'x'){
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std::cout << " *** failed to detect error in division" << std::endl;
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t1 / t2;
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return false;
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}
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std::cout << std::endl;
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}
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catch(const std::exception &){
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if(expected_result == '.'){
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std::cout << " *** erroneously detected error in division \\" << std::endl;
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try{
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t1 / t2;
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}
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catch(const std::exception &){}
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return false;
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}
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}
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}
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return true;
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}
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#endif // BOOST_TEST_DIVIDE
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