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1 | // Copyright (C) 2015-2017 Free Software Foundation, Inc. |
2 | // | |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-options "-std=gnu++17 -lstdc++fs" } | |
19 | // { dg-do run { target c++17 } } | |
20 | // { dg-require-filesystem-ts "" } | |
21 | ||
22 | #include <filesystem> | |
23 | #include <testsuite_hooks.h> | |
24 | #include <testsuite_fs.h> | |
25 | ||
26 | namespace fs = std::filesystem; | |
27 | ||
28 | void | |
29 | test01() | |
30 | { | |
31 | const std::error_code bad_ec = make_error_code(std::errc::invalid_argument); | |
32 | std::error_code ec; | |
33 | ||
34 | // Test non-existent path. | |
35 | const auto p = __gnu_test::nonexistent_path(); | |
36 | fs::recursive_directory_iterator iter(p, ec); | |
37 | VERIFY( ec ); | |
38 | VERIFY( iter == end(iter) ); | |
39 | ||
40 | // Test empty directory. | |
41 | ec = bad_ec; | |
42 | create_directory(p, fs::current_path(), ec); | |
43 | VERIFY( !ec ); | |
44 | ec = bad_ec; | |
45 | iter = fs::recursive_directory_iterator(p, ec); | |
46 | VERIFY( !ec ); | |
47 | VERIFY( iter == end(iter) ); | |
48 | ||
49 | // Test non-empty directory. | |
50 | ec = bad_ec; | |
51 | create_directories(p / "d1/d2", ec); | |
52 | VERIFY( !ec ); | |
53 | ec = bad_ec; | |
54 | iter = fs::recursive_directory_iterator(p, ec); | |
55 | VERIFY( !ec ); | |
56 | VERIFY( iter != end(iter) ); | |
57 | VERIFY( iter->path() == p/"d1" ); | |
58 | ++iter; | |
59 | VERIFY( iter->path() == p/"d1/d2" ); | |
60 | ++iter; | |
61 | VERIFY( iter == end(iter) ); | |
62 | ||
63 | // Test inaccessible directory. | |
64 | ec = bad_ec; | |
65 | permissions(p, fs::perms::none, ec); | |
66 | VERIFY( !ec ); | |
67 | iter = fs::recursive_directory_iterator(p, ec); | |
68 | VERIFY( ec ); | |
69 | VERIFY( iter == end(iter) ); | |
70 | ||
71 | // Test inaccessible directory, skipping permission denied. | |
72 | const auto opts = fs::directory_options::skip_permission_denied; | |
73 | iter = fs::recursive_directory_iterator(p, opts, ec); | |
74 | VERIFY( !ec ); | |
75 | VERIFY( iter == end(iter) ); | |
76 | ||
77 | // Test inaccessible sub-directory. | |
78 | ec = bad_ec; | |
79 | permissions(p, fs::perms::owner_all, ec); | |
80 | VERIFY( !ec ); | |
81 | ec = bad_ec; | |
82 | permissions(p/"d1/d2", fs::perms::none, ec); | |
83 | VERIFY( !ec ); | |
84 | ec = bad_ec; | |
85 | iter = fs::recursive_directory_iterator(p, ec); | |
86 | VERIFY( !ec ); | |
87 | VERIFY( iter != end(iter) ); | |
88 | VERIFY( iter->path() == p/"d1" ); | |
89 | ++iter; // should recurse into d1 | |
90 | VERIFY( iter->path() == p/"d1/d2" ); | |
91 | iter.increment(ec); // should fail to recurse into p/d1/d2 | |
92 | VERIFY( ec ); | |
93 | VERIFY( iter == end(iter) ); | |
94 | ||
95 | // Test inaccessible sub-directory, skipping permission denied. | |
96 | ec = bad_ec; | |
97 | iter = fs::recursive_directory_iterator(p, opts, ec); | |
98 | VERIFY( !ec ); | |
99 | VERIFY( iter != end(iter) ); | |
100 | VERIFY( iter->path() == p/"d1" ); | |
101 | ++iter; // should recurse into d1 | |
102 | VERIFY( iter->path() == p/"d1/d2" ); | |
103 | ec = bad_ec; | |
104 | iter.increment(ec); // should fail to recurse into p/d1/d2, so skip it | |
105 | VERIFY( !ec ); | |
106 | VERIFY( iter == end(iter) ); | |
107 | ||
108 | permissions(p/"d1/d2", fs::perms::owner_all, ec); | |
109 | remove_all(p, ec); | |
110 | } | |
111 | ||
112 | void | |
113 | test02() | |
114 | { | |
115 | const std::error_code bad_ec = make_error_code(std::errc::invalid_argument); | |
116 | std::error_code ec; | |
117 | const auto p = __gnu_test::nonexistent_path(); | |
118 | ec = bad_ec; | |
119 | create_directories(p / "d1/d2", ec); | |
120 | VERIFY( !ec ); | |
121 | ||
122 | // Test post-increment (libstdc++/71005) | |
123 | ec = bad_ec; | |
124 | auto iter = fs::recursive_directory_iterator(p, ec); | |
125 | VERIFY( !ec ); | |
126 | VERIFY( iter != end(iter) ); | |
127 | const auto entry1 = *iter; | |
128 | const auto entry2 = *iter++; | |
129 | VERIFY( entry1 == entry2 ); | |
130 | VERIFY( entry1.path() == p/"d1" ); | |
131 | const auto entry3 = *iter; | |
132 | const auto entry4 = *iter++; | |
133 | VERIFY( entry3 == entry4 ); | |
134 | VERIFY( entry3.path() == p/"d1/d2" ); | |
135 | VERIFY( iter == end(iter) ); | |
136 | ||
137 | remove_all(p, ec); | |
138 | } | |
139 | ||
140 | void | |
141 | test03() | |
142 | { | |
143 | const std::error_code bad_ec = make_error_code(std::errc::invalid_argument); | |
144 | std::error_code ec; | |
145 | const auto p = __gnu_test::nonexistent_path(); | |
146 | ec = bad_ec; | |
147 | create_directories(p / "longer_than_small_string_buffer", ec); | |
148 | VERIFY( !ec ); | |
149 | ||
150 | // Test for no reallocation on each dereference (this is a GNU extension) | |
151 | auto iter = fs::recursive_directory_iterator(p, ec); | |
152 | const auto* s1 = iter->path().c_str(); | |
153 | const auto* s2 = iter->path().c_str(); | |
154 | VERIFY( s1 == s2 ); | |
155 | ||
156 | remove_all(p, ec); | |
157 | } | |
158 | ||
159 | void | |
160 | test04() | |
161 | { | |
162 | // libstdc++/71004 | |
163 | const fs::recursive_directory_iterator it; | |
164 | VERIFY( it == end(it) ); | |
165 | } | |
166 | ||
167 | void | |
168 | test05() | |
169 | { | |
170 | auto p = __gnu_test::nonexistent_path(); | |
171 | create_directory(p); | |
172 | create_directory_symlink(p, p / "l"); | |
173 | fs::recursive_directory_iterator it(p), endit; | |
174 | VERIFY( begin(it) == it ); | |
175 | static_assert( noexcept(begin(it)), "begin is noexcept" ); | |
176 | VERIFY( end(it) == endit ); | |
177 | static_assert( noexcept(end(it)), "end is noexcept" ); | |
178 | } | |
179 | ||
180 | int | |
181 | main() | |
182 | { | |
183 | test01(); | |
184 | test02(); | |
185 | test03(); | |
186 | test04(); | |
187 | test05(); | |
188 | } |