//Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc. //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 #include namespace n1 { class c1 { }; } namespace n2 { class c2 { }; std::ostream & operator<<( std::ostream & s, c2 const & ) { s << "c2"; return s; } } int main() { BOOST_TEST( !boost::is_output_streamable::value ); BOOST_TEST( boost::is_output_streamable::value ); BOOST_TEST( boost::is_output_streamable::value ); return boost::report_errors(); }