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Added test for unused_type

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Kohei Takahashi
2018-04-27 12:37:00 +09:00
parent e3b053f969
commit 38aa3705d0
2 changed files with 96 additions and 0 deletions
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test/support/unused.cpp Normal file
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/*=============================================================================
Copyright (c) 2018 Kohei Takahashi
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 <boost/config.hpp>
#include <boost/fusion/support/unused.hpp>
#include <boost/type_traits/detail/yes_no_type.hpp>
#include <boost/static_assert.hpp>
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
#include <utility>
#endif
struct T { };
void unused_construction()
{
boost::fusion::unused_type dephault;
boost::fusion::unused_type BOOST_ATTRIBUTE_UNUSED parenthesis();
#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
boost::fusion::unused_type BOOST_ATTRIBUTE_UNUSED brace{};
boost::fusion::unused_type BOOST_ATTRIBUTE_UNUSED list_copy = {};
#endif
boost::fusion::unused_type copy_copy BOOST_ATTRIBUTE_UNUSED = dephault;
boost::fusion::unused_type copy_direct BOOST_ATTRIBUTE_UNUSED (dephault);
#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
boost::fusion::unused_type copy_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {dephault};
boost::fusion::unused_type copy_direct_brace BOOST_ATTRIBUTE_UNUSED {dephault};
#endif
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
boost::fusion::unused_type move_copy BOOST_ATTRIBUTE_UNUSED = std::move(dephault);
boost::fusion::unused_type move_direct BOOST_ATTRIBUTE_UNUSED (std::move(dephault));
#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
boost::fusion::unused_type move_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {std::move(dephault)};
boost::fusion::unused_type move_direct_brace BOOST_ATTRIBUTE_UNUSED {std::move(dephault)};
#endif
#endif
T value;
boost::fusion::unused_type T_copy_copy BOOST_ATTRIBUTE_UNUSED = value;
boost::fusion::unused_type T_copy_direct BOOST_ATTRIBUTE_UNUSED (value);
#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
boost::fusion::unused_type T_copy_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {value};
boost::fusion::unused_type T_copy_direct_brace BOOST_ATTRIBUTE_UNUSED {value};
#endif
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
boost::fusion::unused_type T_move_copy BOOST_ATTRIBUTE_UNUSED = std::move(value);
boost::fusion::unused_type T_move_direct BOOST_ATTRIBUTE_UNUSED (std::move(value));
#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
boost::fusion::unused_type T_move_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {std::move(value)};
boost::fusion::unused_type T_move_direct_brace BOOST_ATTRIBUTE_UNUSED {std::move(value)};
#endif
#endif
}
void unused_assignment()
{
boost::fusion::unused_type val1, val2;
val1 = val2;
#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
val1 = {};
#endif
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
val1 = std::move(val2);
#endif
T value;
val1 = value;
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
val1 = std::move(value);
#endif
}
boost::type_traits::yes_type test_unused(boost::fusion::detail::unused_only const&);
boost::type_traits::no_type test_unused(...);
void only_unused()
{
BOOST_STATIC_ASSERT((sizeof(test_unused(boost::fusion::unused)) == sizeof(boost::type_traits::yes_type)));
BOOST_STATIC_ASSERT((sizeof(test_unused(0)) == sizeof(boost::type_traits::no_type)));
boost::fusion::unused_type my_unused;
BOOST_STATIC_ASSERT((sizeof(test_unused(my_unused)) == sizeof(boost::type_traits::yes_type)));
}