33 lines
825 B
C++
33 lines
825 B
C++
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// Copyright 2018 Daniel James.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/blank.hpp>
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#include <boost/static_assert.hpp>
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#include <cassert>
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#if !defined(BOOST_NO_IOSTREAM)
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#include <sstream>
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#endif
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int main() {
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BOOST_STATIC_ASSERT((boost::is_pod<boost::blank>::value));
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BOOST_STATIC_ASSERT((boost::is_empty<boost::blank>::value));
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BOOST_STATIC_ASSERT((boost::is_stateless<boost::blank>::value));
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boost::blank b1,b2;
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assert(b1 == b2);
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assert(b1 <= b2);
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assert(b1 >= b2);
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assert(!(b1 != b2));
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assert(!(b1 < b2));
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assert(!(b1 > b2));
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#if !defined(BOOST_NO_IOSTREAM)
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std::stringstream s;
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s << "(" << b1 << ")";
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assert(s.str() == "()");
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#endif
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}
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