mirror of
https://github.com/boostorg/optional.git
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108 lines
2.9 KiB
C++
108 lines
2.9 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: 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/addressof.hpp"
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#include "boost/core/enable_if.hpp"
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#include "boost/core/lightweight_test.hpp"
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#include "testable_classes.hpp"
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using boost::optional;
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using boost::none;
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template <typename T>
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void test_converting_ctor()
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{
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typename concrete_type_of<T>::type v1(1), v2(2);
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{
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optional<T&> o1 = v1, o1_ = v1, o2 = v2;
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BOOST_TEST(o1);
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BOOST_TEST(boost::addressof(*o1) == boost::addressof(v1));
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BOOST_TEST(o1_);
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(v1));
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(*o1));
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BOOST_TEST(o2);
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BOOST_TEST(boost::addressof(*o2) == boost::addressof(v2));
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BOOST_TEST(boost::addressof(*o2) != boost::addressof(*o1));
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}
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{
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const optional<T&> o1 = v1, o1_ = v1, o2 = v2;
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BOOST_TEST(o1);
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BOOST_TEST(boost::addressof(*o1) == boost::addressof(v1));
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BOOST_TEST(o1_);
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(v1));
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(*o1));
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BOOST_TEST(o2);
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BOOST_TEST(boost::addressof(*o2) == boost::addressof(v2));
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BOOST_TEST(boost::addressof(*o2) != boost::addressof(*o1));
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}
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}
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template <typename T>
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void test_converting_ctor_for_noconst_const()
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{
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typename concrete_type_of<T>::type v1(1), v2(2);
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{
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optional<const T&> o1 = v1, o1_ = v1, o2 = v2;
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BOOST_TEST(o1);
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BOOST_TEST(boost::addressof(*o1) == boost::addressof(v1));
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BOOST_TEST(o1_);
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(v1));
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(*o1));
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BOOST_TEST(o2);
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BOOST_TEST(boost::addressof(*o2) == boost::addressof(v2));
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BOOST_TEST(boost::addressof(*o2) != boost::addressof(*o1));
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}
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{
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const optional<const T&> o1 = v1, o1_ = v1, o2 = v2;
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BOOST_TEST(o1);
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BOOST_TEST(boost::addressof(*o1) == boost::addressof(v1));
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BOOST_TEST(o1_);
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(v1));
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BOOST_TEST(boost::addressof(*o1_) == boost::addressof(*o1));
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BOOST_TEST(o2);
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BOOST_TEST(boost::addressof(*o2) == boost::addressof(v2));
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BOOST_TEST(boost::addressof(*o2) != boost::addressof(*o1));
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}
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}
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template <typename T>
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void test_all_const_cases()
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{
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test_converting_ctor<T>();
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test_converting_ctor<const T>();
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test_converting_ctor_for_noconst_const<T>();
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}
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int main()
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{
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test_all_const_cases<int>();
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test_all_const_cases<ScopeGuard>();
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//test_all_const_cases<Abstract>();
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return boost::report_errors();
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}
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