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7adcbafe | 1 | // Copyright (C) 2015-2022 Free Software Foundation, Inc. |
641cb5a6 JW |
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 | ||
641cb5a6 JW |
18 | // { dg-do run { target c++17 } } |
19 | // { dg-require-filesystem-ts "" } | |
20 | ||
21 | #include <filesystem> | |
22 | #include <testsuite_hooks.h> | |
23 | #include <testsuite_fs.h> | |
24 | ||
25 | namespace fs = std::filesystem; | |
26 | ||
27 | void | |
28 | test01() | |
29 | { | |
30 | const std::error_code bad_ec = make_error_code(std::errc::invalid_argument); | |
31 | std::error_code ec; | |
32 | ||
33 | // Test non-existent path. | |
34 | const auto p = __gnu_test::nonexistent_path(); | |
35 | fs::directory_iterator iter(p, ec); | |
36 | VERIFY( ec ); | |
37 | VERIFY( iter == end(iter) ); | |
38 | ||
39 | // Test empty directory. | |
40 | create_directory(p, fs::current_path(), ec); | |
41 | VERIFY( !ec ); | |
42 | ec = bad_ec; | |
43 | iter = fs::directory_iterator(p, ec); | |
44 | VERIFY( !ec ); | |
45 | VERIFY( iter == end(iter) ); | |
46 | ||
47 | // Test non-empty directory. | |
48 | ec = bad_ec; | |
9534a5e6 | 49 | create_directory(p / "x", ec); |
641cb5a6 JW |
50 | VERIFY( !ec ); |
51 | ec = bad_ec; | |
52 | iter = fs::directory_iterator(p, ec); | |
53 | VERIFY( !ec ); | |
54 | VERIFY( iter != fs::directory_iterator() ); | |
9534a5e6 | 55 | VERIFY( iter->path() == p/"x" ); |
641cb5a6 JW |
56 | ++iter; |
57 | VERIFY( iter == end(iter) ); | |
58 | ||
29b2fd37 JW |
59 | if (__gnu_test::permissions_are_testable()) |
60 | { | |
61 | // Test inaccessible directory. | |
62 | ec = bad_ec; | |
63 | permissions(p, fs::perms::none, ec); | |
64 | VERIFY( !ec ); | |
65 | iter = fs::directory_iterator(p, ec); | |
66 | VERIFY( ec ); | |
67 | VERIFY( iter == end(iter) ); | |
68 | ||
69 | // Test inaccessible directory, skipping permission denied. | |
70 | const auto opts = fs::directory_options::skip_permission_denied; | |
71 | ec = bad_ec; | |
72 | iter = fs::directory_iterator(p, opts, ec); | |
73 | VERIFY( !ec ); | |
74 | VERIFY( iter == end(iter) ); | |
75 | ||
76 | permissions(p, fs::perms::owner_all, ec); | |
77 | } | |
641cb5a6 | 78 | |
641cb5a6 JW |
79 | remove_all(p, ec); |
80 | } | |
81 | ||
82 | void | |
83 | test02() | |
84 | { | |
85 | const std::error_code bad_ec = make_error_code(std::errc::invalid_argument); | |
86 | std::error_code ec; | |
87 | const auto p = __gnu_test::nonexistent_path(); | |
88 | ec = bad_ec; | |
89 | create_directory(p, fs::current_path(), ec); | |
9534a5e6 | 90 | create_directory(p / "x", ec); |
641cb5a6 JW |
91 | VERIFY( !ec ); |
92 | ||
93 | // Test post-increment (libstdc++/71005) | |
94 | ec = bad_ec; | |
95 | auto iter = fs::directory_iterator(p, ec); | |
96 | VERIFY( !ec ); | |
97 | VERIFY( iter != end(iter) ); | |
98 | const auto entry1 = *iter; | |
99 | const auto entry2 = *iter++; | |
100 | VERIFY( entry1 == entry2 ); | |
9534a5e6 | 101 | VERIFY( entry1.path() == p/"x" ); |
641cb5a6 JW |
102 | VERIFY( iter == end(iter) ); |
103 | ||
67087c7e JW |
104 | // Test post-increment (libstdc++/89986) |
105 | ec = bad_ec; | |
106 | iter = fs::directory_iterator(p, ec); | |
107 | VERIFY( !ec ); | |
108 | VERIFY( iter != end(iter) ); | |
109 | iter.increment(ec); | |
110 | VERIFY( !ec ); | |
111 | VERIFY( iter == end(iter) ); | |
112 | ||
641cb5a6 JW |
113 | remove_all(p, ec); |
114 | } | |
115 | ||
116 | void | |
117 | test03() | |
118 | { | |
119 | std::error_code ec = make_error_code(std::errc::invalid_argument); | |
120 | const auto p = __gnu_test::nonexistent_path(); | |
121 | create_directories(p / "longer_than_small_string_buffer", ec); | |
122 | VERIFY( !ec ); | |
123 | ||
124 | // Test for no reallocation on each dereference (this is a GNU extension) | |
125 | auto iter = fs::directory_iterator(p, ec); | |
126 | const auto* s1 = iter->path().c_str(); | |
127 | const auto* s2 = iter->path().c_str(); | |
128 | VERIFY( s1 == s2 ); | |
129 | ||
130 | remove_all(p, ec); | |
131 | } | |
132 | ||
133 | void | |
134 | test04() | |
135 | { | |
136 | const fs::directory_iterator it; | |
137 | VERIFY( it == fs::directory_iterator() ); | |
138 | } | |
139 | ||
140 | void | |
141 | test05() | |
142 | { | |
143 | auto p = __gnu_test::nonexistent_path(); | |
144 | create_directory(p); | |
9534a5e6 | 145 | create_directory(p / "x"); |
641cb5a6 JW |
146 | fs::directory_iterator it(p), endit; |
147 | VERIFY( begin(it) == it ); | |
148 | static_assert( noexcept(begin(it)), "begin is noexcept" ); | |
149 | VERIFY( end(it) == endit ); | |
150 | static_assert( noexcept(end(it)), "end is noexcept" ); | |
7c4979b2 JW |
151 | |
152 | std::error_code ec; | |
153 | remove_all(p, ec); | |
641cb5a6 JW |
154 | } |
155 | ||
156 | int | |
157 | main() | |
158 | { | |
159 | test01(); | |
160 | test02(); | |
161 | test03(); | |
162 | test04(); | |
163 | test05(); | |
164 | } |