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- // Copyright (c) 2008 Joseph Gauterin, Niels Dekker
- //
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- // Tests whether instances of a class from a namespace other than boost are
- // properly swapped, when both boost and the other namespace have a custom
- // swap function for that class. Note that it shouldn't be necessary for a class
- // in an other namespace to have a custom swap function in boost, because the
- // boost::swap utility should find the swap function in the other namespace, by
- // argument dependent lookup (ADL). Unfortunately ADL isn't fully implemented
- // by some specific compiler versions, including Intel C++ 8.1, MSVC 7.1, and
- // Borland 5.9.3. Users of those compilers might consider adding a swap overload
- // to the boost namespace.
- #include <boost/utility/swap.hpp>
- #include <boost/core/lightweight_test.hpp>
- #define BOOST_CHECK BOOST_TEST
- #define BOOST_CHECK_EQUAL BOOST_TEST_EQ
- //Put test class in namespace other
- namespace other
- {
- #include "./swap_test_class.hpp"
- }
- //Provide swap function in namespace boost
- namespace boost
- {
- void swap(::other::swap_test_class& left, ::other::swap_test_class& right)
- {
- left.swap(right);
- }
- }
- //Provide swap function in namespace other
- namespace other
- {
- void swap(swap_test_class& left, swap_test_class& right)
- {
- left.swap(right);
- }
- }
- int main()
- {
- const other::swap_test_class initial_value1(1);
- const other::swap_test_class initial_value2(2);
- other::swap_test_class object1 = initial_value1;
- other::swap_test_class object2 = initial_value2;
-
- other::swap_test_class::reset();
- boost::swap(object1,object2);
- BOOST_CHECK(object1 == initial_value2);
- BOOST_CHECK(object2 == initial_value1);
-
- BOOST_CHECK_EQUAL(other::swap_test_class::swap_count(),1);
- BOOST_CHECK_EQUAL(other::swap_test_class::copy_count(),0);
- return boost::report_errors();
- }
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