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107 lines
2.4 KiB
C++
107 lines
2.4 KiB
C++
// Copyright (C) 2016 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 maintainer at: 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 <string>
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#include "boost/core/addressof.hpp"
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#include "boost/core/lightweight_test.hpp"
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using boost::optional;
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struct Iface
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{
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virtual void fun() = 0;
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protected: ~Iface() {}
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};
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struct Impl : Iface
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{
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void fun() {}
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};
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template <typename T>
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void test_swap_empty_with_empty()
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{
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boost::optional<T&> o1, o2;
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swap(o1, o2);
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BOOST_TEST(!o1);
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BOOST_TEST(!o2);
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}
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template <typename T, typename U>
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void test_swap_value_with_empty(U v1)
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{
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boost::optional<T&> o1 (v1), o2;
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swap(o1, o2);
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BOOST_TEST(!o1);
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BOOST_TEST(o2);
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BOOST_TEST(boost::addressof(*o2) == boost::addressof(v1));
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}
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template <typename T, typename U>
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void test_swap_empty_with_value(U v2)
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{
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boost::optional<T&> o1, o2(v2);
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swap(o1, o2);
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BOOST_TEST(o1);
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BOOST_TEST(boost::addressof(*o1) == boost::addressof(v2));
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BOOST_TEST(!o2);
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}
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template <typename T, typename U>
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void test_swap_value_with_value(U v1, U v2)
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{
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boost::optional<T&> o1(v1), o2(v2);
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swap(o1, o2);
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BOOST_TEST(o1);
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BOOST_TEST(o2);
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BOOST_TEST(boost::addressof(*o1) == boost::addressof(v2));
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BOOST_TEST(boost::addressof(*o2) == boost::addressof(v1));
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}
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int main()
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{
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std::string s1 ("AAA"), s2 ("BB");
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int i1 = 1, i2 = 2;
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Impl p1, p2;
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test_swap_empty_with_empty<std::string>( );
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test_swap_value_with_empty<std::string>(s1 );
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test_swap_empty_with_value<std::string>( s2);
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test_swap_value_with_value<std::string>(s1, s2);
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test_swap_empty_with_empty<int>( );
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test_swap_value_with_empty<int>(i1 );
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test_swap_empty_with_value<int>( i2);
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test_swap_value_with_value<int>(i1, i2);
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test_swap_empty_with_empty<Iface>( );
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test_swap_value_with_empty<Iface>(p1 );
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test_swap_empty_with_value<Iface>( p2);
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test_swap_value_with_value<Iface>(p1, p2);
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test_swap_empty_with_empty<const Iface>( );
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test_swap_value_with_empty<const Iface>(p1 );
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test_swap_empty_with_value<const Iface>( p2);
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test_swap_value_with_value<const Iface>(p1, p2);
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return boost::report_errors();
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}
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