73ef4ff3
 Hu Chunming
提交三方库
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// Copyright Abel Sinkovics (abel@sinkovics.hu) 2015.
// 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/metaparse/v1/swap.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/mpl/assert.hpp>
#include "test_case.hpp"
namespace
{
struct returns_first
{
typedef returns_first type;
template <class A, class>
struct apply
{
typedef A type;
};
};
struct returns_second
{
typedef returns_second type;
template <class, class B>
struct apply
{
typedef B type;
};
};
}
BOOST_METAPARSE_TEST_CASE(swap)
{
using boost::metaparse::v1::swap;
using boost::is_same;
BOOST_MPL_ASSERT((
is_same<double, swap<returns_first>::apply<int, double>::type>
));
BOOST_MPL_ASSERT((
is_same<int, swap<returns_second>::apply<int, double>::type>
));
}
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