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- // Copyright (C) 2003, Fernando Luis Cacciola Carballal.
- // Copyright (C) 2014 Andrzej Krzemienski.
- //
- // Use, modification, and distribution is subject to 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)
- //
- // See http://www.boost.org/lib/optional for documentation.
- //
- // You are welcome to contact the author at:
- // fernando_cacciola@hotmail.com
- #include <sstream>
- #include "boost/optional/optional.hpp"
- #include "boost/optional/optional_io.hpp"
- #ifdef __BORLANDC__
- #pragma hdrstop
- #endif
- #include "boost/core/lightweight_test.hpp"
- using boost::optional;
- template<class Opt>
- void test2( Opt o, Opt buff )
- {
- std::stringstream s ;
- const int markv = 123 ;
- int mark = 0 ;
-
- s << o << " " << markv ;
- s >> buff >> mark ;
- BOOST_TEST( buff == o ) ;
- BOOST_TEST( mark == markv ) ;
- }
- template<class T>
- void test( T v, T w )
- {
- test2( boost::make_optional(v), optional<T> ());
- test2( boost::make_optional(v), boost::make_optional(w));
- test2( optional<T> () , optional<T> ());
- test2( optional<T> () , boost::make_optional(w));
- }
- template <class T>
- void subtest_tag_none_reversibility_with_optional(optional<T> ov)
- {
- std::stringstream s;
- s << boost::none;
- s >> ov;
- BOOST_TEST(!ov);
- }
- template <class T>
- void subtest_tag_none_equivalence_with_optional()
- {
- std::stringstream s, r;
- optional<T> ov;
- s << boost::none;
- r << ov;
- BOOST_TEST_EQ(s.str(), r.str());
- }
- template <class T>
- void test_tag_none(T v)
- {
- subtest_tag_none_reversibility_with_optional(optional<T>(v));
- subtest_tag_none_reversibility_with_optional(optional<T>());
- subtest_tag_none_equivalence_with_optional<T>();
- }
- int main()
- {
- test(1,2);
- test(std::string("hello"), std::string("buffer"));
- test_tag_none(10);
- test_tag_none(std::string("text"));
- return boost::report_errors();
- }
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