1// Boost.Range library
2//
3// Copyright Neil Groves 2010. Use, modification and
4// distribution is subject to the Boost Software License, Version
5// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7//
8//
9// For more information, see http://www.boost.org/libs/range/
10//
11
12// This test was added due to a report that the Range Adaptors:
13// 1. Caused havoc when using namespace boost::adaptors was used
14// 2. Did not work with non-member functions
15// 3. The strided adaptor could not be composed with sliced
16//
17// None of these issues could be reproduced on GCC 4.4, but this
18// work makes for useful additional test coverage since this
19// uses chaining of adaptors and non-member functions whereas
20// most of the tests avoid this use case.
21
22#include <boost/range/adaptor/strided.hpp>
23#include <boost/range/adaptor/sliced.hpp>
24#include <boost/range/adaptor/transformed.hpp>
25#include <boost/range/irange.hpp>
26
27#include <boost/test/test_tools.hpp>
28#include <boost/test/unit_test.hpp>
29
30#include <boost/assign.hpp>
31#include <boost/range/algorithm_ext.hpp>
32
33#include <algorithm>
34#include <vector>
35
36namespace boost
37{
38 namespace
39 {
40 int times_two(int x) { return x * 2; }
41
42 void strided_test2()
43 {
44 using namespace boost::adaptors;
45 using namespace boost::assign;
46 std::vector<int> v;
47 boost::push_back(on&: v, from: boost::irange(first: 0,last: 10));
48 std::vector<int> z;
49 boost::push_back(on&: z, from: v | sliced(2,6) | strided(2) | transformed(&times_two));
50 std::vector<int> reference;
51 reference += 4,8;
52 BOOST_CHECK_EQUAL_COLLECTIONS( reference.begin(), reference.end(),
53 z.begin(), z.end() );
54 }
55 }
56}
57
58boost::unit_test::test_suite*
59init_unit_test_suite(int argc, char* argv[])
60{
61 boost::unit_test::test_suite* test
62 = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.strided2" );
63
64 test->add( BOOST_TEST_CASE( &boost::strided_test2 ) );
65
66 return test;
67}
68

source code of boost/libs/range/test/adaptor_test/strided2.cpp