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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
//
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// shared_ptr_rv_pointer_cast_test.cpp
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//
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// Copyright (c) 2016 Chris Glover
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//
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// Distributed under the Boost Software License, Version 1.0.
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// 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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#include <boost/shared_ptr.hpp>
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#include <boost/core/lightweight_test.hpp>
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struct X
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{};
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struct Y: public X
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{};
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struct U
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{
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virtual ~U() {}
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};
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struct V: public U
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{};
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struct W : public U
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{};
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int main()
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{
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{
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boost::shared_ptr<X> px(new Y);
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boost::shared_ptr<Y> py1 = boost::static_pointer_cast<Y>(px);
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boost::shared_ptr<Y> py2 = boost::static_pointer_cast<Y>(std::move(px));
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BOOST_TEST(!px);
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BOOST_TEST(px.use_count() == 0);
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BOOST_TEST(py1.get() == py2.get());
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BOOST_TEST(!(py1 < py2 || py2 < py1));
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BOOST_TEST(py1.use_count() == 2);
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BOOST_TEST(py2.use_count() == 2);
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}
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{
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boost::shared_ptr<int const volatile> px(new int);
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boost::shared_ptr<int> px2 = boost::const_pointer_cast<int>(px);
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boost::shared_ptr<int> px3 = boost::const_pointer_cast<int>(std::move(px));
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BOOST_TEST(!px);
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BOOST_TEST(px.use_count() == 0);
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BOOST_TEST(px2.get() == px3.get());
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BOOST_TEST(!(px2 < px3 || px2 < px3));
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BOOST_TEST(px2.use_count() == 2);
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BOOST_TEST(px3.use_count() == 2);
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}
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{
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boost::shared_ptr<char> pv(reinterpret_cast<char*>(new Y));
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boost::shared_ptr<Y> py1 = boost::reinterpret_pointer_cast<Y>(pv);
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boost::shared_ptr<Y> py2 = boost::reinterpret_pointer_cast<Y>(std::move(pv));
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BOOST_TEST(!pv);
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BOOST_TEST(pv.use_count() == 0);
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BOOST_TEST(py1.get() == py2.get());
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BOOST_TEST(!(py1 < py2 || py2 < py1));
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BOOST_TEST(py1.use_count() == 2);
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BOOST_TEST(py2.use_count() == 2);
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}
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#if !defined( BOOST_NO_RTTI )
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{
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boost::shared_ptr<U> pu(new V);
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boost::shared_ptr<V> pv1 = boost::dynamic_pointer_cast<V>(pu);
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boost::shared_ptr<V> pv2 = boost::dynamic_pointer_cast<V>(std::move(pu));
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BOOST_TEST(!pu);
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BOOST_TEST(pu.use_count() == 0);
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BOOST_TEST(pv1.get() == pv2.get());
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BOOST_TEST(!(pv1 < pv2 || pv2 < pv1));
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BOOST_TEST(pv1.use_count() == 2);
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BOOST_TEST(pv2.use_count() == 2);
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}
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{
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boost::shared_ptr<U> pu(new V);
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boost::shared_ptr<W> pw = boost::dynamic_pointer_cast<W>(std::move(pu));
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BOOST_TEST(!pw);
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BOOST_TEST(pu);
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}
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#endif // !defined( BOOST_NO_RTTI )
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return boost::report_errors();
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}
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