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- // 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:
- // akrzemi1@gmail.com
- #include "boost/optional/optional.hpp"
- #ifdef __BORLANDC__
- #pragma hdrstop
- #endif
- #include "boost/core/lightweight_test.hpp"
- #include "boost/none.hpp"
- //#ifndef BOOST_OPTIONAL_NO_CONVERTING_COPY_CTOR
- using boost::optional;
- using boost::none;
- template <typename U>
- struct superconv
- {
- #ifndef BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES
- template <typename T>
- superconv(T&&) { BOOST_STATIC_ASSERT(sizeof(T) == 0); }
- #else
- template <typename T>
- superconv(const T&) { BOOST_STATIC_ASSERT(sizeof(T) == 0); }
- template <typename T>
- superconv( T&) { BOOST_STATIC_ASSERT(sizeof(T) == 0); }
- #endif
-
- superconv() {}
- };
- void test_optional_of_superconverting_T() // compile-time test
- {
- #ifndef BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT
- superconv<optional<int> > s;
- superconv<optional<int> > & rs = s;
- optional<superconv<optional<int> > > os = rs;
- #endif
- }
- void test_optional_optional_T()
- {
- optional<int> oi1 (1), oiN;
- optional< optional<int> > ooi1 (oi1), ooiN(oiN);
-
- BOOST_TEST(ooi1);
- BOOST_TEST(*ooi1);
- BOOST_TEST_EQ(**ooi1, 1);
-
- BOOST_TEST(ooiN);
- BOOST_TEST(!*ooiN);
- }
- int main()
- {
- test_optional_optional_T();
- test_optional_of_superconverting_T();
-
- return boost::report_errors();
- }
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