53 lines
961 B
C++
53 lines
961 B
C++
// Copyright Abel Sinkovics (abel@sinkovics.hu) 2015.
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// Distributed under the Boost Software License, Version 1.0.
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// (See 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 <boost/metaparse/v1/swap.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/mpl/assert.hpp>
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#include "test_case.hpp"
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namespace
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{
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struct returns_first
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{
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typedef returns_first type;
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template <class A, class>
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struct apply
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{
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typedef A type;
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};
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};
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struct returns_second
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{
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typedef returns_second type;
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template <class, class B>
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struct apply
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{
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typedef B type;
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};
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};
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}
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BOOST_METAPARSE_TEST_CASE(swap)
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{
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using boost::metaparse::v1::swap;
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using boost::is_same;
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BOOST_MPL_ASSERT((
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is_same<double, swap<returns_first>::apply<int, double>::type>
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));
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BOOST_MPL_ASSERT((
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is_same<int, swap<returns_second>::apply<int, double>::type>
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));
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}
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