1 // Copyright (c) 2008 Joseph Gauterin, Niels Dekker
2 //
3 // Distributed under the Boost Software License, Version 1.0.
4 // (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6
7 // Tests whether instances of a class from a namespace other than boost are
8 // properly swapped, when both boost and the other namespace have a custom
9 // swap function for that class. Note that it shouldn't be necessary for a class
10 // in an other namespace to have a custom swap function in boost, because the
11 // boost::swap utility should find the swap function in the other namespace, by
12 // argument dependent lookup (ADL). Unfortunately ADL isn't fully implemented
13 // by some specific compiler versions, including Intel C++ 8.1, MSVC 7.1, and
14 // Borland 5.9.3. Users of those compilers might consider adding a swap overload
15 // to the boost namespace.
16
17 #include <boost/utility/swap.hpp>
18 #include <boost/core/lightweight_test.hpp>
19 #define BOOST_CHECK BOOST_TEST
20 #define BOOST_CHECK_EQUAL BOOST_TEST_EQ
21
22 //Put test class in namespace other
23 namespace other
24 {
25 #include "./swap_test_class.hpp"
26 }
27
28 //Provide swap function in namespace boost
29 namespace boost
30 {
swap(::other::swap_test_class & left,::other::swap_test_class & right)31 void swap(::other::swap_test_class& left, ::other::swap_test_class& right)
32 {
33 left.swap(right);
34 }
35 }
36
37 //Provide swap function in namespace other
38 namespace other
39 {
swap(swap_test_class & left,swap_test_class & right)40 void swap(swap_test_class& left, swap_test_class& right)
41 {
42 left.swap(right);
43 }
44 }
45
main()46 int main()
47 {
48 const other::swap_test_class initial_value1(1);
49 const other::swap_test_class initial_value2(2);
50
51 other::swap_test_class object1 = initial_value1;
52 other::swap_test_class object2 = initial_value2;
53
54 other::swap_test_class::reset();
55 boost::swap(object1,object2);
56
57 BOOST_CHECK(object1 == initial_value2);
58 BOOST_CHECK(object2 == initial_value1);
59
60 BOOST_CHECK_EQUAL(other::swap_test_class::swap_count(),1);
61 BOOST_CHECK_EQUAL(other::swap_test_class::copy_count(),0);
62
63 return boost::report_errors();
64 }
65
66