~bzr-pqm/bzr/bzr.dev

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
# Copyright (C) 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

"""Basic tests for AtomicFile"""

import os
import stat
import sys

from bzrlib import (
    atomicfile,
    errors,
    osutils,
    symbol_versioning,
    )
from bzrlib.tests import TestCaseInTempDir


class TestAtomicFile(TestCaseInTempDir):

    def test_commit(self):
        f = atomicfile.AtomicFile('test')
        self.failIfExists('test')
        f.write('foo\n')
        f.commit()

        self.assertEqual(['test'], os.listdir('.'))
        self.check_file_contents('test', 'foo\n')
        self.assertRaises(errors.AtomicFileAlreadyClosed, f.commit)
        self.assertRaises(errors.AtomicFileAlreadyClosed, f.abort)
        # close is re-entrant safe
        f.close()

    def test_abort(self):
        f = atomicfile.AtomicFile('test')
        f.write('foo\n')
        f.abort()
        self.assertEqual([], os.listdir('.'))

        self.assertRaises(errors.AtomicFileAlreadyClosed, f.abort)
        self.assertRaises(errors.AtomicFileAlreadyClosed, f.commit)

        # close is re-entrant safe
        f.close()

    def test_close(self):
        f = atomicfile.AtomicFile('test')
        f.write('foo\n')
        # close on an open file is an abort
        f.close()
        self.assertEqual([], os.listdir('.'))

        self.assertRaises(errors.AtomicFileAlreadyClosed, f.abort)
        self.assertRaises(errors.AtomicFileAlreadyClosed, f.commit)

        # close is re-entrant safe
        f.close()
        
    def test_text_mode(self):
        f = atomicfile.AtomicFile('test', mode='wt')
        f.write('foo\n')
        f.commit()

        contents = open('test', 'rb').read()
        if sys.platform == 'win32':
            self.assertEqual('foo\r\n', contents)
        else:
            self.assertEqual('foo\n', contents)

    def can_sys_preserve_mode(self):
        # PLATFORM DEFICIENCY/ TestSkipped
        return sys.platform not in ('win32',)

    def _test_mode(self, mode):
        if not self.can_sys_preserve_mode():
            return
        f = atomicfile.AtomicFile('test', mode='wb', new_mode=mode)
        f.write('foo\n')
        f.commit()
        st = os.lstat('test')
        self.assertEqualMode(mode, stat.S_IMODE(st.st_mode))

    def test_mode_0666(self):
        self._test_mode(0666)

    def test_mode_0664(self):
        self._test_mode(0664)

    def test_mode_0660(self):
        self._test_mode(0660)

    def test_mode_0660(self):
        self._test_mode(0660)

    def test_mode_0640(self):
        self._test_mode(0640)

    def test_mode_0600(self):
        self._test_mode(0600)

    def test_mode_0400(self):
        self._test_mode(0400)
        # Make it read-write again so cleanup doesn't complain
        os.chmod('test', 0600)

    def test_no_mode(self):
        # The default file permissions should be based on umask
        umask = osutils.get_umask()
        f = atomicfile.AtomicFile('test', mode='wb')
        f.write('foo\n')
        f.commit()
        st = os.lstat('test')
        self.assertEqualMode(0666 & ~umask, stat.S_IMODE(st.st_mode))

    def test_closed(self):
        local_warnings = []
        def capture_warnings(msg, cls, stacklevel=None):
            self.assertEqual(cls, DeprecationWarning)
            local_warnings.append(msg)

        method = symbol_versioning.warn
        try:
            symbol_versioning.set_warning_method(capture_warnings)
            f = atomicfile.AtomicFile('test', mode='wb')
            self.assertEqual(False, f.closed)
            f.abort()
            self.assertEqual(True, f.closed)

            f = atomicfile.AtomicFile('test', mode='wb')
            f.close()
            self.assertEqual(True, f.closed)

            f = atomicfile.AtomicFile('test', mode='wb')
            f.commit()
            self.assertEqual(True, f.closed)
        finally:
            symbol_versioning.set_warning_method(method)

        txt = 'AtomicFile.closed deprecated in bzr 0.10'
        self.assertEqual([txt]*4, local_warnings)