1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// REQUIRES: can-create-symlinks
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: no-filesystem
// UNSUPPORTED: availability-filesystem-missing
// <filesystem>
// class recursive_directory_iterator
// recursive_directory_iterator& operator=(recursive_directory_iterator const&);
#include <filesystem>
#include <type_traits>
#include <set>
#include <cassert>
#include "test_macros.h"
#include "filesystem_test_helper.h"
namespace fs = std::filesystem;
using namespace fs;
// The filesystem specification explicitly allows for self-move on
// the directory iterators. Turn off this warning so we can test it.
TEST_CLANG_DIAGNOSTIC_IGNORED("-Wself-move")
recursive_directory_iterator createInterestingIterator(const static_test_env &static_env)
// Create an "interesting" iterator where all fields are
// in a non-default state. The returned 'it' is in a
// state such that:
// it.options() == directory_options::skip_permission_denied
// it.depth() == 1
// it.recursion_pending() == true
{
const path testDir = static_env.Dir;
const recursive_directory_iterator endIt;
recursive_directory_iterator it(testDir,
directory_options::skip_permission_denied);
assert(it != endIt);
while (it.depth() != 1) {
++it;
assert(it != endIt);
}
assert(it.depth() == 1);
it.disable_recursion_pending();
return it;
}
recursive_directory_iterator createDifferentInterestingIterator(const static_test_env &static_env)
// Create an "interesting" iterator where all fields are
// in a non-default state. The returned 'it' is in a
// state such that:
// it.options() == directory_options::follow_directory_symlink
// it.depth() == 2
// it.recursion_pending() == false
{
const path testDir = static_env.Dir;
const recursive_directory_iterator endIt;
recursive_directory_iterator it(testDir,
directory_options::follow_directory_symlink);
assert(it != endIt);
while (it.depth() != 2) {
++it;
assert(it != endIt);
}
assert(it.depth() == 2);
return it;
}
static void test_assignment_signature()
{
using D = recursive_directory_iterator;
static_assert(std::is_nothrow_move_assignable<D>::value, "");
}
static void test_move_to_end_iterator()
{
static_test_env static_env;
const recursive_directory_iterator endIt;
recursive_directory_iterator from = createInterestingIterator(static_env);
const recursive_directory_iterator from_copy(from);
const path entry = *from;
recursive_directory_iterator to;
to = std::move(from);
assert(to != endIt);
assert(*to == entry);
assert(to.options() == from_copy.options());
assert(to.depth() == from_copy.depth());
assert(to.recursion_pending() == from_copy.recursion_pending());
assert(from == endIt || from == to);
}
static void test_move_from_end_iterator()
{
static_test_env static_env;
recursive_directory_iterator from;
recursive_directory_iterator to = createInterestingIterator(static_env);
to = std::move(from);
assert(to == from);
assert(to == recursive_directory_iterator{});
}
static void test_move_valid_iterator()
{
static_test_env static_env;
const recursive_directory_iterator endIt;
recursive_directory_iterator it = createInterestingIterator(static_env);
const recursive_directory_iterator it_copy(it);
const path entry = *it;
recursive_directory_iterator it2 = createDifferentInterestingIterator(static_env);
const recursive_directory_iterator it2_copy(it2);
assert(it2 != it);
assert(it2.options() != it.options());
assert(it2.depth() != it.depth());
assert(it2.recursion_pending() != it.recursion_pending());
assert(*it2 != entry);
it2 = std::move(it);
assert(it2 != it2_copy && it2 != endIt);
assert(it2.options() == it_copy.options());
assert(it2.depth() == it_copy.depth());
assert(it2.recursion_pending() == it_copy.recursion_pending());
assert(*it2 == entry);
assert(it == endIt || it == it2);
}
static void test_returns_reference_to_self()
{
recursive_directory_iterator it;
recursive_directory_iterator it2;
recursive_directory_iterator& ref = (it2 = std::move(it));
assert(&ref == &it2);
}
static void test_self_move()
{
static_test_env static_env;
// Create two non-equal iterators that have exactly the same state.
recursive_directory_iterator it = createInterestingIterator(static_env);
recursive_directory_iterator it2 = createInterestingIterator(static_env);
assert(it != it2);
assert(it2.options() == it.options());
assert(it2.depth() == it.depth());
assert(it2.recursion_pending() == it.recursion_pending());
assert(*it2 == *it);
it = std::move(it);
assert(it2.options() == it.options());
assert(it2.depth() == it.depth());
assert(it2.recursion_pending() == it.recursion_pending());
assert(*it2 == *it);
}
int main(int, char**) {
test_assignment_signature();
test_move_to_end_iterator();
test_move_from_end_iterator();
test_move_valid_iterator();
test_returns_reference_to_self();
test_self_move();
return 0;
}
|
