1 | // Boost.Range library |
2 | // |
3 | // Copyright Neil Groves 2014. 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 | // Credits: |
12 | // Jurgen Hunold provided a test case that demonstrated that the range adaptors |
13 | // were producing iterators that were not default constructible. This became |
14 | // symptomatic after enabling concept checking assertions. This test is a |
15 | // lightly modified version of his supplied code to ensure that his use case |
16 | // never breaks again. (hopefully!) |
17 | // |
18 | |
19 | #include <boost/range/adaptor/transformed.hpp> |
20 | #include <boost/range/adaptor/filtered.hpp> |
21 | #include <boost/range/algorithm/copy.hpp> |
22 | #include <boost/bind/bind.hpp> |
23 | |
24 | #include <boost/test/test_tools.hpp> |
25 | #include <boost/test/unit_test.hpp> |
26 | |
27 | #include <vector> |
28 | #include <set> |
29 | |
30 | namespace boost_range_test |
31 | { |
32 | namespace |
33 | { |
34 | |
35 | class foo |
36 | { |
37 | public: |
38 | static foo from_string(const std::string& source) |
39 | { |
40 | foo f; |
41 | f.m_valid = true; |
42 | f.m_value = 0u; |
43 | for (std::string::const_iterator it = source.begin(); |
44 | it != source.end(); ++it) |
45 | { |
46 | f.m_value += *it; |
47 | if ((*it < 'a') || (*it > 'z')) |
48 | f.m_valid = false; |
49 | } |
50 | return f; |
51 | } |
52 | bool is_valid() const |
53 | { |
54 | return m_valid; |
55 | } |
56 | bool operator<(const foo& other) const |
57 | { |
58 | return m_value < other.m_value; |
59 | } |
60 | bool operator==(const foo& other) const |
61 | { |
62 | return m_value == other.m_value && m_valid == other.m_valid; |
63 | } |
64 | bool operator!=(const foo& other) const |
65 | { |
66 | return !operator==(other); |
67 | } |
68 | |
69 | friend inline std::ostream& operator<<(std::ostream& out, const foo& obj) |
70 | { |
71 | out << "{value=" << obj.m_value |
72 | << ", valid=" << std::boolalpha << obj.m_valid << "}\n" ; |
73 | return out; |
74 | } |
75 | |
76 | private: |
77 | boost::uint64_t m_value; |
78 | bool m_valid; |
79 | }; |
80 | |
81 | void chained_adaptors_test() |
82 | { |
83 | std::vector<std::string> sep; |
84 | |
85 | sep.push_back(x: "AB" ); |
86 | sep.push_back(x: "ab" ); |
87 | sep.push_back(x: "aghj" ); |
88 | |
89 | std::set<foo> foos; |
90 | |
91 | using namespace boost::placeholders; |
92 | |
93 | boost::copy(rng: sep |
94 | | boost::adaptors::transformed(boost::bind(f: &foo::from_string, a1: _1)) |
95 | | boost::adaptors::filtered(boost::bind(f: &foo::is_valid, a1: _1)), |
96 | out: std::inserter(x&: foos, i: foos.end())); |
97 | |
98 | std::vector<foo> reference; |
99 | reference.push_back(x: foo::from_string(source: "ab" )); |
100 | reference.push_back(x: foo::from_string(source: "aghj" )); |
101 | |
102 | BOOST_CHECK_EQUAL_COLLECTIONS( |
103 | reference.begin(), reference.end(), |
104 | foos.begin(), foos.end()); |
105 | } |
106 | |
107 | } // anonymous namespace |
108 | } // namespace boost_range_test |
109 | |
110 | boost::unit_test::test_suite* |
111 | init_unit_test_suite(int argc, char* argv[]) |
112 | { |
113 | boost::unit_test::test_suite* test |
114 | = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.chained adaptors" ); |
115 | |
116 | test->add(BOOST_TEST_CASE( boost_range_test::chained_adaptors_test)); |
117 | |
118 | return test; |
119 | } |
120 | |