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
214
215
216
217
218
219
220
221
222
|
# Copyright (C) 2005, 2006 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Tests for the osutils wrapper."""
import codecs
import locale
import os
import sys
from bzrlib import (
errors,
osutils,
)
from bzrlib.tests import (
StringIOWrapper,
TestCase,
)
class FakeCodec(object):
"""Special class that helps testing over several non-existed encodings.
Clients can add new encoding names, but because of how codecs is
implemented they cannot be removed. Be careful with naming to avoid
collisions between tests.
"""
_registered = False
_enabled_encodings = set()
def add(self, encoding_name):
"""Adding encoding name to fake.
:type encoding_name: lowercase plain string
"""
if not self._registered:
codecs.register(self)
self._registered = True
if encoding_name is not None:
self._enabled_encodings.add(encoding_name)
def __call__(self, encoding_name):
"""Called indirectly by codecs module during lookup"""
if encoding_name in self._enabled_encodings:
return codecs.lookup('latin-1')
fake_codec = FakeCodec()
class TestFakeCodec(TestCase):
def test_fake_codec(self):
self.assertRaises(LookupError, codecs.lookup, 'fake')
fake_codec.add('fake')
codecs.lookup('fake')
class TestTerminalEncoding(TestCase):
"""Test the auto-detection of proper terminal encoding."""
def setUp(self):
TestCase.setUp(self)
self._stdout = sys.stdout
self._stderr = sys.stderr
self._stdin = sys.stdin
self._user_encoding = osutils._cached_user_encoding
self.addCleanup(self._reset)
def make_wrapped_streams(self,
stdout_encoding,
stderr_encoding,
stdin_encoding,
user_encoding='user_encoding',
enable_fake_encodings=True):
sys.stdout = StringIOWrapper()
sys.stdout.encoding = stdout_encoding
sys.stderr = StringIOWrapper()
sys.stderr.encoding = stderr_encoding
sys.stdin = StringIOWrapper()
sys.stdin.encoding = stdin_encoding
osutils._cached_user_encoding = user_encoding
if enable_fake_encodings:
fake_codec.add(stdout_encoding)
fake_codec.add(stderr_encoding)
fake_codec.add(stdin_encoding)
def _reset(self):
sys.stdout = self._stdout
sys.stderr = self._stderr
sys.stdin = self._stdin
osutils._cached_user_encoding = self._user_encoding
def test_get_terminal_encoding(self):
self.make_wrapped_streams('stdout_encoding',
'stderr_encoding',
'stdin_encoding')
# first preference is stdout encoding
self.assertEqual('stdout_encoding', osutils.get_terminal_encoding())
sys.stdout.encoding = None
# if sys.stdout is None, fall back to sys.stdin
self.assertEqual('stdin_encoding', osutils.get_terminal_encoding())
sys.stdin.encoding = None
# and in the worst case, use osutils.get_user_encoding()
self.assertEqual('user_encoding', osutils.get_terminal_encoding())
def test_terminal_cp0(self):
# test cp0 encoding (Windows returns cp0 when there is no encoding)
self.make_wrapped_streams('cp0',
'cp0',
'cp0',
user_encoding='latin-1',
enable_fake_encodings=False)
# cp0 is invalid encoding. We should fall back to user_encoding
self.assertEqual('latin-1', osutils.get_terminal_encoding())
# check stderr
self.assertEquals('', sys.stderr.getvalue())
def test_terminal_cp_unknown(self):
# test against really unknown encoding
# catch warning at stderr
self.make_wrapped_streams('cp-unknown',
'cp-unknown',
'cp-unknown',
user_encoding='latin-1',
enable_fake_encodings=False)
self.assertEqual('latin-1', osutils.get_terminal_encoding())
# check stderr
self.assertEquals('bzr: warning: unknown terminal encoding cp-unknown.\n'
' Using encoding latin-1 instead.\n',
sys.stderr.getvalue())
class TestUserEncoding(TestCase):
"""Test detection of default user encoding."""
def setUp(self):
TestCase.setUp(self)
self._stderr = sys.stderr
self._getpreferredencoding = locale.getpreferredencoding
self.addCleanup(self._reset)
sys.stderr = StringIOWrapper()
# save $LANG
self._LANG = os.environ.get('LANG')
def _reset(self):
locale.getpreferredencoding = self._getpreferredencoding
sys.stderr = self._stderr
# restore $LANG
osutils.set_or_unset_env('LANG', self._LANG)
def test_get_user_encoding(self):
def f():
return 'user_encoding'
locale.getpreferredencoding = f
fake_codec.add('user_encoding')
self.assertEquals('user_encoding', osutils.get_user_encoding(use_cache=False))
self.assertEquals('', sys.stderr.getvalue())
def test_user_cp0(self):
def f():
return 'cp0'
locale.getpreferredencoding = f
self.assertEquals('ascii', osutils.get_user_encoding(use_cache=False))
self.assertEquals('', sys.stderr.getvalue())
def test_user_cp_unknown(self):
def f():
return 'cp-unknown'
locale.getpreferredencoding = f
self.assertEquals('ascii', osutils.get_user_encoding(use_cache=False))
self.assertEquals('bzr: warning: unknown encoding cp-unknown.'
' Continuing with ascii encoding.\n',
sys.stderr.getvalue())
def test_user_empty(self):
"""Running bzr from a vim script gives '' for a preferred locale"""
def f():
return ''
locale.getpreferredencoding = f
self.assertEquals('ascii', osutils.get_user_encoding(use_cache=False))
self.assertEquals('', sys.stderr.getvalue())
def test_user_locale_error(self):
def f():
raise locale.Error, 'unsupported locale'
locale.getpreferredencoding = f
os.environ['LANG'] = 'BOGUS'
self.assertEquals('ascii', osutils.get_user_encoding(use_cache=False))
self.assertEquals('bzr: warning: unsupported locale\n'
' Could not determine what text encoding to use.\n'
' This error usually means your Python interpreter\n'
' doesn\'t support the locale set by $LANG (BOGUS)\n'
' Continuing with ascii encoding.\n',
sys.stderr.getvalue())
|