113 lines
2.2 KiB
C++
113 lines
2.2 KiB
C++
//
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// shared_array nullptr test
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//
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// Copyright 2012, 2013 Peter Dimov
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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_array.hpp>
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#include <boost/detail/lightweight_test.hpp>
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#include <cstddef>
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#include <memory>
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#if !defined( BOOST_NO_CXX11_NULLPTR )
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struct X
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{
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static int instances;
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X()
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{
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++instances;
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}
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~X()
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{
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--instances;
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}
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private:
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X( X const & );
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X & operator=( X const & );
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};
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int X::instances = 0;
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int main()
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{
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{
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boost::shared_array<int> p( nullptr );
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BOOST_TEST( p.get() == 0 );
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BOOST_TEST( p.use_count() == 0 );
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BOOST_TEST( p == nullptr );
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BOOST_TEST( nullptr == p );
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BOOST_TEST( !( p != nullptr ) );
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BOOST_TEST( !( nullptr != p ) );
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}
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{
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boost::shared_array<int> p( new int[ 1 ] );
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BOOST_TEST( p.get() != 0 );
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BOOST_TEST( p.use_count() == 1 );
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BOOST_TEST( p != nullptr );
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BOOST_TEST( nullptr != p );
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BOOST_TEST( !( p == nullptr ) );
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BOOST_TEST( !( nullptr == p ) );
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p = nullptr;
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BOOST_TEST( p.get() == 0 );
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BOOST_TEST( p.use_count() == 0 );
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BOOST_TEST( p == nullptr );
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BOOST_TEST( nullptr == p );
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BOOST_TEST( !( p != nullptr ) );
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BOOST_TEST( !( nullptr != p ) );
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}
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{
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BOOST_TEST( X::instances == 0 );
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boost::shared_array<X> p( new X[ 2 ] );
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BOOST_TEST( X::instances == 2 );
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BOOST_TEST( p.get() != 0 );
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BOOST_TEST( p.use_count() == 1 );
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BOOST_TEST( p != nullptr );
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BOOST_TEST( nullptr != p );
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BOOST_TEST( !( p == nullptr ) );
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BOOST_TEST( !( nullptr == p ) );
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p = nullptr;
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BOOST_TEST( X::instances == 0 );
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BOOST_TEST( p.get() == 0 );
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BOOST_TEST( p.use_count() == 0 );
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BOOST_TEST( p == nullptr );
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BOOST_TEST( nullptr == p );
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BOOST_TEST( !( p != nullptr ) );
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BOOST_TEST( !( nullptr != p ) );
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}
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return boost::report_errors();
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}
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#else
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int main()
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{
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return 0;
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}
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#endif
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