71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
// Copyright (C) 2014 Andrzej Krzemienski.
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//
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// Use, modification, and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/lib/optional for documentation.
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//
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// You are welcome to contact the author at:
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// akrzemi1@gmail.com
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#include "boost/optional/optional.hpp"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "boost/core/lightweight_test.hpp"
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#include "boost/none.hpp"
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//#ifndef BOOST_OPTIONAL_NO_CONVERTING_COPY_CTOR
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using boost::optional;
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using boost::none;
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template <typename U>
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struct superconv
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{
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#ifndef BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES
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template <typename T>
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superconv(T&&) { BOOST_STATIC_ASSERT(sizeof(T) == 0); }
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#else
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template <typename T>
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superconv(const T&) { BOOST_STATIC_ASSERT(sizeof(T) == 0); }
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template <typename T>
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superconv( T&) { BOOST_STATIC_ASSERT(sizeof(T) == 0); }
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#endif
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superconv() {}
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};
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void test_optional_of_superconverting_T() // compile-time test
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{
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#ifndef BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT
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superconv<optional<int> > s;
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superconv<optional<int> > & rs = s;
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optional<superconv<optional<int> > > os = rs;
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#endif
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}
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void test_optional_optional_T()
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{
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optional<int> oi1 (1), oiN;
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optional< optional<int> > ooi1 (oi1), ooiN(oiN);
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BOOST_TEST(ooi1);
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BOOST_TEST(*ooi1);
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BOOST_TEST_EQ(**ooi1, 1);
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BOOST_TEST(ooiN);
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BOOST_TEST(!*ooiN);
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}
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int main()
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{
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test_optional_optional_T();
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test_optional_of_superconverting_T();
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return boost::report_errors();
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}
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