| // 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 BOOST_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(); |
| } |