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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
"""Tests for scandir.walk(), copied from CPython's tests for os.walk()."""
import os
import shutil
import sys
import unittest
import scandir
import yatest.common
walk_func = scandir.walk
IS_PY3 = sys.version_info >= (3, 0)
class TestWalk(unittest.TestCase):
testfn = os.path.join(os.path.dirname(__file__), 'temp')
def test_traversal(self):
self.testfn = yatest.common.test_output_path('temp')
# Build:
# TESTFN/
# TEST1/ a file kid and two directory kids
# tmp1
# SUB1/ a file kid and a directory kid
# tmp2
# SUB11/ no kids
# SUB2/ a file kid and a dirsymlink kid
# tmp3
# link/ a symlink to TESTFN.2
# TEST2/
# tmp4 a lone file
walk_path = os.path.join(self.testfn, "TEST1")
sub1_path = os.path.join(walk_path, "SUB1")
sub11_path = os.path.join(sub1_path, "SUB11")
sub2_path = os.path.join(walk_path, "SUB2")
tmp1_path = os.path.join(walk_path, "tmp1")
tmp2_path = os.path.join(sub1_path, "tmp2")
tmp3_path = os.path.join(sub2_path, "tmp3")
link_path = os.path.join(sub2_path, "link")
t2_path = os.path.join(self.testfn, "TEST2")
tmp4_path = os.path.join(self.testfn, "TEST2", "tmp4")
# Create stuff.
os.makedirs(sub11_path)
os.makedirs(sub2_path)
os.makedirs(t2_path)
for path in tmp1_path, tmp2_path, tmp3_path, tmp4_path:
f = open(path, "w")
f.write("I'm " + path + " and proud of it. Blame test_os.\n")
f.close()
has_symlink = hasattr(os, "symlink")
if has_symlink:
try:
if IS_PY3:
os.symlink(os.path.abspath(t2_path), link_path, target_is_directory=True)
else:
os.symlink(os.path.abspath(t2_path), link_path)
sub2_tree = (sub2_path, ["link"], ["tmp3"])
except NotImplementedError:
sub2_tree = (sub2_path, [], ["tmp3"])
else:
sub2_tree = (sub2_path, [], ["tmp3"])
# Walk top-down.
all = list(walk_func(walk_path))
self.assertEqual(len(all), 4)
# We can't know which order SUB1 and SUB2 will appear in.
# Not flipped: TESTFN, SUB1, SUB11, SUB2
# flipped: TESTFN, SUB2, SUB1, SUB11
flipped = all[0][1][0] != "SUB1"
all[0][1].sort()
self.assertEqual(all[0], (walk_path, ["SUB1", "SUB2"], ["tmp1"]))
self.assertEqual(all[1 + flipped], (sub1_path, ["SUB11"], ["tmp2"]))
self.assertEqual(all[2 + flipped], (sub11_path, [], []))
self.assertEqual(all[3 - 2 * flipped], sub2_tree)
# Prune the search.
all = []
for root, dirs, files in walk_func(walk_path):
all.append((root, dirs, files))
# Don't descend into SUB1.
if 'SUB1' in dirs:
# Note that this also mutates the dirs we appended to all!
dirs.remove('SUB1')
self.assertEqual(len(all), 2)
self.assertEqual(all[0], (walk_path, ["SUB2"], ["tmp1"]))
self.assertEqual(all[1], sub2_tree)
# Walk bottom-up.
all = list(walk_func(walk_path, topdown=False))
self.assertEqual(len(all), 4)
# We can't know which order SUB1 and SUB2 will appear in.
# Not flipped: SUB11, SUB1, SUB2, TESTFN
# flipped: SUB2, SUB11, SUB1, TESTFN
flipped = all[3][1][0] != "SUB1"
all[3][1].sort()
self.assertEqual(all[3], (walk_path, ["SUB1", "SUB2"], ["tmp1"]))
self.assertEqual(all[flipped], (sub11_path, [], []))
self.assertEqual(all[flipped + 1], (sub1_path, ["SUB11"], ["tmp2"]))
self.assertEqual(all[2 - 2 * flipped], sub2_tree)
if has_symlink:
# Walk, following symlinks.
for root, dirs, files in walk_func(walk_path, followlinks=True):
if root == link_path:
self.assertEqual(dirs, [])
self.assertEqual(files, ["tmp4"])
break
else:
self.fail("Didn't follow symlink with followlinks=True")
# Test creating a directory and adding it to dirnames
sub3_path = os.path.join(walk_path, "SUB3")
all = []
for root, dirs, files in walk_func(walk_path):
all.append((root, dirs, files))
if 'SUB1' in dirs:
os.makedirs(sub3_path)
dirs.append('SUB3')
all.sort()
self.assertEqual(os.path.split(all[-1][0])[1], 'SUB3')
def tearDown(self):
# Tear everything down. This is a decent use for bottom-up on
# Windows, which doesn't have a recursive delete command. The
# (not so) subtlety is that rmdir will fail unless the dir's
# kids are removed first, so bottom up is essential.
for root, dirs, files in os.walk(self.testfn, topdown=False):
for name in files:
os.remove(os.path.join(root, name))
for name in dirs:
dirname = os.path.join(root, name)
if not os.path.islink(dirname):
os.rmdir(dirname)
else:
os.remove(dirname)
os.rmdir(self.testfn)
class TestWalkSymlink(unittest.TestCase):
temp_dir = os.path.join(os.path.dirname(__file__), 'temp')
def setUp(self):
self.temp_dir = yatest.common.test_output_path('temp')
os.mkdir(self.temp_dir)
self.dir_name = os.path.join(self.temp_dir, 'dir')
os.mkdir(self.dir_name)
open(os.path.join(self.dir_name, 'subfile'), 'w').close()
self.file_name = os.path.join(self.temp_dir, 'file')
open(self.file_name, 'w').close()
def tearDown(self):
shutil.rmtree(self.temp_dir)
def test_symlink_to_file(self):
if not hasattr(os, 'symlink'):
return
try:
os.symlink(self.file_name, os.path.join(self.temp_dir,
'link_to_file'))
except NotImplementedError:
# Windows versions before Vista don't support symbolic links
return
output = sorted(walk_func(self.temp_dir))
dirs = sorted(output[0][1])
files = sorted(output[0][2])
self.assertEqual(dirs, ['dir'])
self.assertEqual(files, ['file', 'link_to_file'])
self.assertEqual(len(output), 2)
self.assertEqual(output[1][1], [])
self.assertEqual(output[1][2], ['subfile'])
def test_symlink_to_directory(self):
if not hasattr(os, 'symlink'):
return
link_name = os.path.join(self.temp_dir, 'link_to_dir')
try:
if IS_PY3:
os.symlink(self.dir_name, link_name, target_is_directory=True)
else:
os.symlink(self.dir_name, link_name)
except NotImplementedError:
# Windows versions before Vista don't support symbolic links
return
output = sorted(walk_func(self.temp_dir))
dirs = sorted(output[0][1])
files = sorted(output[0][2])
self.assertEqual(dirs, ['dir', 'link_to_dir'])
self.assertEqual(files, ['file'])
self.assertEqual(len(output), 2)
self.assertEqual(output[1][1], [])
self.assertEqual(output[1][2], ['subfile'])
output = sorted(walk_func(self.temp_dir, followlinks=True))
dirs = sorted(output[0][1])
files = sorted(output[0][2])
self.assertEqual(dirs, ['dir', 'link_to_dir'])
self.assertEqual(files, ['file'])
self.assertEqual(len(output), 3)
self.assertEqual(output[1][1], [])
self.assertEqual(output[1][2], ['subfile'])
self.assertEqual(os.path.basename(output[2][0]), 'link_to_dir')
self.assertEqual(output[2][1], [])
self.assertEqual(output[2][2], ['subfile'])
|
