]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | // Boost.Range library |
2 | // | |
3 | // Copyright Neil Groves 2014. Use, modification and distribution is subject | |
4 | // to the Boost Software License, Version 1.0. (See accompanying file | |
5 | // LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | // For more information, see http://www.boost.org/libs/range | |
9 | // | |
10 | ||
11 | #include "mock_range.hpp" | |
12 | #include <boost/range/adaptor/adjacent_filtered.hpp> | |
13 | ||
14 | namespace | |
15 | { | |
16 | ||
17 | struct always_true | |
18 | { | |
19 | typedef bool result_type; | |
20 | ||
21 | bool operator()(int, int) const | |
22 | { | |
23 | return true; | |
24 | } | |
25 | }; | |
26 | ||
27 | } // anonymous namespace | |
28 | ||
29 | int main(int, const char**) | |
30 | { | |
31 | using boost::range::unit_test::mock_const_range; | |
32 | using boost::adaptors::adjacent_filter; | |
33 | ||
34 | // This next line should fail when Boost.Range concept checking is | |
35 | // enabled since the adjacent_filtered adaptor takes at least a | |
36 | // ForwardRange. | |
37 | return adjacent_filter( | |
38 | mock_const_range<boost::single_pass_traversal_tag>(), | |
39 | always_true()).front(); | |
40 | } |