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7c673cae | 1 | // |
b32b8144 | 2 | // Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail dot com) |
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3 | // |
4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | // | |
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7 | // Official repository: https://github.com/boostorg/beast |
8 | // | |
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9 | |
10 | // Test that header file is self-contained. | |
b32b8144 | 11 | #include <boost/beast/core/buffers_cat.hpp> |
7c673cae | 12 | |
b32b8144 | 13 | #include <boost/beast/unit_test/suite.hpp> |
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14 | #include <boost/asio/buffer.hpp> |
15 | #include <boost/asio/streambuf.hpp> | |
16 | #include <iterator> | |
17 | #include <list> | |
18 | #include <type_traits> | |
19 | #include <vector> | |
20 | ||
b32b8144 | 21 | namespace boost { |
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22 | namespace beast { |
23 | ||
b32b8144 | 24 | class buffers_cat_test : public unit_test::suite |
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25 | { |
26 | public: | |
27 | template<class Iterator> | |
28 | static | |
29 | std::reverse_iterator<Iterator> | |
30 | make_reverse_iterator(Iterator i) | |
31 | { | |
32 | return std::reverse_iterator<Iterator>(i); | |
33 | } | |
34 | ||
35 | template<class ConstBufferSequence> | |
36 | static | |
37 | std::size_t | |
38 | bsize1(ConstBufferSequence const& bs) | |
39 | { | |
40 | using boost::asio::buffer_size; | |
41 | std::size_t n = 0; | |
42 | for(auto it = bs.begin(); it != bs.end(); ++it) | |
43 | n += buffer_size(*it); | |
44 | return n; | |
45 | } | |
46 | ||
47 | template<class ConstBufferSequence> | |
48 | static | |
49 | std::size_t | |
50 | bsize2(ConstBufferSequence const& bs) | |
51 | { | |
52 | using boost::asio::buffer_size; | |
53 | std::size_t n = 0; | |
54 | for(auto it = bs.begin(); it != bs.end(); it++) | |
55 | n += buffer_size(*it); | |
56 | return n; | |
57 | } | |
58 | ||
59 | template<class ConstBufferSequence> | |
60 | static | |
61 | std::size_t | |
62 | bsize3(ConstBufferSequence const& bs) | |
63 | { | |
64 | using boost::asio::buffer_size; | |
65 | std::size_t n = 0; | |
66 | for(auto it = bs.end(); it != bs.begin();) | |
67 | n += buffer_size(*--it); | |
68 | return n; | |
69 | } | |
70 | ||
71 | template<class ConstBufferSequence> | |
72 | static | |
73 | std::size_t | |
74 | bsize4(ConstBufferSequence const& bs) | |
75 | { | |
76 | using boost::asio::buffer_size; | |
77 | std::size_t n = 0; | |
78 | for(auto it = bs.end(); it != bs.begin();) | |
79 | { | |
80 | it--; | |
81 | n += buffer_size(*it); | |
82 | } | |
83 | return n; | |
84 | } | |
85 | ||
86 | void testBufferCat() | |
87 | { | |
88 | using boost::asio::buffer_size; | |
89 | using boost::asio::const_buffer; | |
90 | char buf[10]; | |
91 | std::list<const_buffer> b1; | |
92 | std::vector<const_buffer> b2{ | |
93 | const_buffer{buf+0, 1}, | |
94 | const_buffer{buf+1, 2}}; | |
95 | std::list<const_buffer> b3; | |
96 | std::array<const_buffer, 3> b4{{ | |
97 | const_buffer{buf+3, 1}, | |
98 | const_buffer{buf+4, 2}, | |
99 | const_buffer{buf+6, 3}}}; | |
100 | std::list<const_buffer> b5{ | |
101 | const_buffer{buf+9, 1}}; | |
102 | std::list<const_buffer> b6; | |
b32b8144 | 103 | auto bs = buffers_cat( |
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104 | b1, b2, b3, b4, b5, b6); |
105 | BEAST_EXPECT(buffer_size(bs) == 10); | |
106 | BEAST_EXPECT(bsize1(bs) == 10); | |
107 | BEAST_EXPECT(bsize2(bs) == 10); | |
108 | BEAST_EXPECT(bsize3(bs) == 10); | |
109 | BEAST_EXPECT(bsize4(bs) == 10); | |
110 | std::vector<const_buffer> v; | |
111 | for(auto iter = make_reverse_iterator(bs.end()); | |
112 | iter != make_reverse_iterator(bs.begin()); ++iter) | |
113 | v.emplace_back(*iter); | |
114 | BEAST_EXPECT(buffer_size(bs) == 10); | |
115 | decltype(bs) bs2(bs); | |
116 | auto bs3(std::move(bs)); | |
117 | { | |
118 | boost::asio::streambuf sb1, sb2; | |
b32b8144 | 119 | BEAST_EXPECT(buffer_size(buffers_cat( |
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120 | sb1.prepare(5), sb2.prepare(7))) == 12); |
121 | sb1.commit(5); | |
122 | sb2.commit(7); | |
b32b8144 | 123 | BEAST_EXPECT(buffer_size(buffers_cat( |
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124 | sb1.data(), sb2.data())) == 12); |
125 | } | |
126 | for(auto it = bs.begin(); it != bs.end(); ++it) | |
127 | { | |
128 | decltype(bs)::const_iterator copy; | |
129 | copy = it; | |
130 | BEAST_EXPECT(copy == it); | |
131 | copy = copy; | |
132 | BEAST_EXPECT(copy == it); | |
133 | } | |
134 | } | |
135 | ||
136 | void testIterators() | |
137 | { | |
138 | using boost::asio::buffer_size; | |
139 | using boost::asio::const_buffer; | |
140 | char buf[9]; | |
141 | std::vector<const_buffer> b1{ | |
142 | const_buffer{buf+0, 1}, | |
143 | const_buffer{buf+1, 2}}; | |
144 | std::array<const_buffer, 3> b2{{ | |
145 | const_buffer{buf+3, 1}, | |
146 | const_buffer{buf+4, 2}, | |
147 | const_buffer{buf+6, 3}}}; | |
b32b8144 | 148 | auto bs = buffers_cat(b1, b2); |
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149 | for(int n = 0; |
150 | n <= std::distance(bs.begin(), bs.end()); ++n) | |
151 | { | |
152 | auto it = std::next(bs.begin(), n); | |
153 | decltype(it) it2(std::move(it)); | |
154 | it = std::move(it2); | |
155 | auto pit = ⁢ | |
156 | it = std::move(*pit); | |
157 | } | |
158 | try | |
159 | { | |
160 | std::size_t n = 0; | |
161 | for(auto it = bs.begin(); n < 100; ++it) | |
162 | ++n; | |
163 | fail(); | |
164 | } | |
165 | catch(std::exception const&) | |
166 | { | |
167 | pass(); | |
168 | } | |
169 | ||
170 | // decrement iterator | |
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171 | /* VFALCO |
172 | This causes a mysterious "uninitialized variable" | |
173 | warning related to this function (see comment) | |
174 | https://code.woboq.org/qt5/include/c++/6.3.1/bits/stl_iterator.h.html#159 | |
175 | */ | |
176 | #if 0 | |
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177 | { |
178 | auto const rbegin = | |
179 | make_reverse_iterator(bs.end()); | |
180 | auto const rend = | |
181 | make_reverse_iterator(bs.begin()); | |
182 | std::size_t n = 0; | |
183 | for(auto it = rbegin; it != rend; ++it) | |
184 | n += buffer_size(*it); | |
185 | BEAST_EXPECT(n == 9); | |
186 | } | |
b32b8144 | 187 | #endif |
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188 | |
189 | try | |
190 | { | |
191 | std::size_t n = 0; | |
192 | for(auto it = bs.end(); n < 100; --it) | |
193 | ++n; | |
194 | fail(); | |
195 | } | |
196 | catch(std::exception const&) | |
197 | { | |
198 | pass(); | |
199 | } | |
200 | ||
201 | try | |
202 | { | |
203 | buffer_size(*bs.end()); | |
204 | fail(); | |
205 | } | |
206 | catch(std::exception const&) | |
207 | { | |
208 | pass(); | |
209 | } | |
210 | auto bs2 = bs; | |
211 | BEAST_EXPECT(bs.begin() != bs2.begin()); | |
212 | BEAST_EXPECT(bs.end() != bs2.end()); | |
213 | decltype(bs)::const_iterator it; | |
214 | decltype(bs2)::const_iterator it2; | |
215 | BEAST_EXPECT(it == it2); | |
216 | } | |
217 | ||
218 | void run() override | |
219 | { | |
220 | using boost::asio::const_buffer; | |
b32b8144 | 221 | using boost::asio::const_buffer; |
7c673cae | 222 | using boost::asio::mutable_buffer; |
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223 | struct user_defined : mutable_buffer |
224 | { | |
225 | }; | |
226 | ||
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227 | // Check is_all_const_buffer_sequence |
228 | BOOST_STATIC_ASSERT( | |
229 | detail::is_all_const_buffer_sequence<const_buffer>::value); | |
230 | BOOST_STATIC_ASSERT( | |
231 | detail::is_all_const_buffer_sequence<const_buffer, const_buffer>::value); | |
232 | BOOST_STATIC_ASSERT( | |
233 | detail::is_all_const_buffer_sequence<mutable_buffer, mutable_buffer>::value); | |
234 | BOOST_STATIC_ASSERT( | |
235 | detail::is_all_const_buffer_sequence<const_buffer, mutable_buffer>::value); | |
236 | BOOST_STATIC_ASSERT( | |
237 | ! detail::is_all_const_buffer_sequence<const_buffer, mutable_buffer, int>::value); | |
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238 | |
239 | // Ensure that concatenating mutable buffer | |
240 | // sequences results in a mutable buffer sequence | |
b32b8144 | 241 | BOOST_STATIC_ASSERT(std::is_same< |
7c673cae | 242 | mutable_buffer, |
b32b8144 | 243 | decltype(buffers_cat( |
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244 | std::declval<mutable_buffer>(), |
245 | std::declval<user_defined>(), | |
246 | std::declval<mutable_buffer>() | |
b32b8144 | 247 | ))::value_type>::value); |
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248 | |
249 | // Ensure that concatenating mixed buffer | |
250 | // sequences results in a const buffer sequence. | |
b32b8144 | 251 | BOOST_STATIC_ASSERT(std::is_same< |
7c673cae | 252 | const_buffer, |
b32b8144 | 253 | decltype(buffers_cat( |
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254 | std::declval<mutable_buffer>(), |
255 | std::declval<user_defined>(), | |
256 | std::declval<const_buffer>() | |
b32b8144 | 257 | ))::value_type>::value); |
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258 | |
259 | testBufferCat(); | |
260 | testIterators(); | |
261 | } | |
262 | }; | |
263 | ||
b32b8144 | 264 | BEAST_DEFINE_TESTSUITE(beast,core,buffers_cat); |
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265 | |
266 | } // beast | |
b32b8144 | 267 | } // boost |