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1 // Copyright (c) 2008 Joseph Gauterin, Niels Dekker
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)
7 // Tests swapping an array of arrays of swap_test_class objects by means of boost::swap.
9 #include <boost/utility/swap.hpp>
10 #include <boost/core/lightweight_test.hpp>
11 #define BOOST_CHECK BOOST_TEST
12 #define BOOST_CHECK_EQUAL BOOST_TEST_EQ
14 //Put test class in the global namespace
15 #include "./swap_test_class.hpp"
17 #include <algorithm> //for std::copy and std::equal
18 #include <cstddef> //for std::size_t
20 //Provide swap function in both the namespace of swap_test_class
21 //(which is the global namespace), and the std namespace.
22 //It's common to provide a swap function for a class in both
23 //namespaces. Scott Meyers recommends doing so: Effective C++,
24 //Third Edition, item 25, "Consider support for a non-throwing swap".
25 void swap(swap_test_class
& left
, swap_test_class
& right
)
33 void swap(swap_test_class
& left
, swap_test_class
& right
)
42 const std::size_t first_dimension
= 3;
43 const std::size_t second_dimension
= 4;
44 const std::size_t number_of_elements
= first_dimension
* second_dimension
;
46 swap_test_class array1
[first_dimension
][second_dimension
];
47 swap_test_class array2
[first_dimension
][second_dimension
];
49 swap_test_class
* const ptr1
= array1
[0];
50 swap_test_class
* const ptr2
= array2
[0];
52 for (std::size_t i
= 0; i
< number_of_elements
; ++i
)
54 ptr1
[i
].set_data( static_cast<int>(i
) );
55 ptr2
[i
].set_data( static_cast<int>(i
+ number_of_elements
) );
58 boost::swap(array1
, array2
);
60 for (std::size_t i
= 0; i
< number_of_elements
; ++i
)
62 BOOST_CHECK_EQUAL(ptr1
[i
].get_data(), static_cast<int>(i
+ number_of_elements
) );
63 BOOST_CHECK_EQUAL(ptr2
[i
].get_data(), static_cast<int>(i
) );
66 BOOST_CHECK_EQUAL(swap_test_class::swap_count(), number_of_elements
);
67 BOOST_CHECK_EQUAL(swap_test_class::copy_count(), 0);
69 return boost::report_errors();