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  • Committer: Aaron Bentley
  • Date: 2005-10-04 04:32:32 UTC
  • mfrom: (1185.12.6)
  • mto: (1185.12.13)
  • mto: This revision was merged to the branch mainline in revision 1419.
  • Revision ID: aaron.bentley@utoronto.ca-20051004043231-40302a149769263b
merged my own changes

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1
 
# Copyright (C) 2005 by Canonical Ltd
2
 
#   Authors: Robert Collins <robert.collins@canonical.com>
3
 
#
4
 
# This program is free software; you can redistribute it and/or modify
5
 
# it under the terms of the GNU General Public License as published by
6
 
# the Free Software Foundation; either version 2 of the License, or
7
 
# (at your option) any later version.
8
 
#
9
 
# This program 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
15
 
# along with this program; if not, write to the Free Software
16
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17
 
 
18
 
"""Tests for finding and reading the bzr config file[s]."""
19
 
# import system imports here
20
 
from bzrlib.util.configobj.configobj import ConfigObj, ConfigObjError
21
 
from cStringIO import StringIO
22
 
import os
23
 
import sys
24
 
 
25
 
#import bzrlib specific imports here
26
 
import bzrlib.config as config
27
 
import bzrlib.errors as errors
28
 
from bzrlib.selftest import TestCase, TestCaseInTempDir
29
 
 
30
 
 
31
 
sample_config_text = ("[DEFAULT]\n"
32
 
                      "email=Robert Collins <robertc@example.com>\n"
33
 
                      "editor=vim\n"
34
 
                      "gpg_signing_command=gnome-gpg\n"
35
 
                      "user_global_option=something\n")
36
 
 
37
 
 
38
 
sample_always_signatures = ("[DEFAULT]\n"
39
 
                            "check_signatures=require\n")
40
 
 
41
 
 
42
 
sample_ignore_signatures = ("[DEFAULT]\n"
43
 
                            "check_signatures=ignore\n")
44
 
 
45
 
 
46
 
sample_maybe_signatures = ("[DEFAULT]\n"
47
 
                            "check_signatures=check-available\n")
48
 
 
49
 
 
50
 
sample_branches_text = ("[http://www.example.com]\n"
51
 
                        "# Top level policy\n"
52
 
                        "email=Robert Collins <robertc@example.org>\n"
53
 
                        "[http://www.example.com/useglobal]\n"
54
 
                        "# different project, forces global lookup\n"
55
 
                        "recurse=false\n"
56
 
                        "[/b/]\n"
57
 
                        "check_signatures=require\n"
58
 
                        "# test trailing / matching with no children\n"
59
 
                        "[/a/]\n"
60
 
                        "check_signatures=check-available\n"
61
 
                        "gpg_signing_command=false\n"
62
 
                        "user_local_option=local\n"
63
 
                        "# test trailing / matching\n"
64
 
                        "[/a/*]\n"
65
 
                        "#subdirs will match but not the parent\n"
66
 
                        "recurse=False\n"
67
 
                        "[/a/c]\n"
68
 
                        "check_signatures=ignore\n"
69
 
                        "post_commit=bzrlib.selftest.testconfig.post_commit\n"
70
 
                        "#testing explicit beats globs\n")
71
 
 
72
 
 
73
 
class InstrumentedConfigObj(object):
74
 
    """A config obj look-enough-alike to record calls made to it."""
75
 
 
76
 
    def __contains__(self, thing):
77
 
        self._calls.append(('__contains__', thing))
78
 
        return False
79
 
 
80
 
    def __getitem__(self, key):
81
 
        self._calls.append(('__getitem__', key))
82
 
        return self
83
 
 
84
 
    def __init__(self, input):
85
 
        self._calls = [('__init__', input)]
86
 
 
87
 
    def __setitem__(self, key, value):
88
 
        self._calls.append(('__setitem__', key, value))
89
 
 
90
 
    def write(self):
91
 
        self._calls.append(('write',))
92
 
 
93
 
 
94
 
class FakeBranch(object):
95
 
 
96
 
    def __init__(self):
97
 
        self.base = "http://example.com/branches/demo"
98
 
        self.email = 'Robert Collins <robertc@example.net>\n'
99
 
 
100
 
    def controlfile(self, filename, mode):
101
 
        if filename != 'email':
102
 
            raise NotImplementedError
103
 
        if self.email is not None:
104
 
            return StringIO(self.email)
105
 
        raise errors.NoSuchFile
106
 
 
107
 
 
108
 
class InstrumentedConfig(config.Config):
109
 
    """An instrumented config that supplies stubs for template methods."""
110
 
    
111
 
    def __init__(self):
112
 
        super(InstrumentedConfig, self).__init__()
113
 
        self._calls = []
114
 
        self._signatures = config.CHECK_NEVER
115
 
 
116
 
    def _get_user_id(self):
117
 
        self._calls.append('_get_user_id')
118
 
        return "Robert Collins <robert.collins@example.org>"
119
 
 
120
 
    def _get_signature_checking(self):
121
 
        self._calls.append('_get_signature_checking')
122
 
        return self._signatures
123
 
 
124
 
 
125
 
class TestConfig(TestCase):
126
 
 
127
 
    def test_constructs(self):
128
 
        config.Config()
129
 
 
130
 
    def test_no_default_editor(self):
131
 
        self.assertRaises(NotImplementedError, config.Config().get_editor)
132
 
 
133
 
    def test_user_email(self):
134
 
        my_config = InstrumentedConfig()
135
 
        self.assertEqual('robert.collins@example.org', my_config.user_email())
136
 
        self.assertEqual(['_get_user_id'], my_config._calls)
137
 
 
138
 
    def test_username(self):
139
 
        my_config = InstrumentedConfig()
140
 
        self.assertEqual('Robert Collins <robert.collins@example.org>',
141
 
                         my_config.username())
142
 
        self.assertEqual(['_get_user_id'], my_config._calls)
143
 
 
144
 
    def test_signatures_default(self):
145
 
        my_config = config.Config()
146
 
        self.assertEqual(config.CHECK_IF_POSSIBLE,
147
 
                         my_config.signature_checking())
148
 
 
149
 
    def test_signatures_template_method(self):
150
 
        my_config = InstrumentedConfig()
151
 
        self.assertEqual(config.CHECK_NEVER, my_config.signature_checking())
152
 
        self.assertEqual(['_get_signature_checking'], my_config._calls)
153
 
 
154
 
    def test_signatures_template_method_none(self):
155
 
        my_config = InstrumentedConfig()
156
 
        my_config._signatures = None
157
 
        self.assertEqual(config.CHECK_IF_POSSIBLE,
158
 
                         my_config.signature_checking())
159
 
        self.assertEqual(['_get_signature_checking'], my_config._calls)
160
 
 
161
 
    def test_gpg_signing_command_default(self):
162
 
        my_config = config.Config()
163
 
        self.assertEqual('gpg', my_config.gpg_signing_command())
164
 
 
165
 
    def test_get_user_option_default(self):
166
 
        my_config = config.Config()
167
 
        self.assertEqual(None, my_config.get_user_option('no_option'))
168
 
 
169
 
    def test_post_commit_default(self):
170
 
        my_config = config.Config()
171
 
        self.assertEqual(None, my_config.post_commit())
172
 
 
173
 
 
174
 
class TestConfigPath(TestCase):
175
 
 
176
 
    def setUp(self):
177
 
        super(TestConfigPath, self).setUp()
178
 
        self.oldenv = os.environ.get('HOME', None)
179
 
        os.environ['HOME'] = '/home/bogus'
180
 
 
181
 
    def tearDown(self):
182
 
        os.environ['HOME'] = self.oldenv
183
 
        super(TestConfigPath, self).tearDown()
184
 
    
185
 
    def test_config_dir(self):
186
 
        self.assertEqual(config.config_dir(), '/home/bogus/.bazaar')
187
 
 
188
 
    def test_config_filename(self):
189
 
        self.assertEqual(config.config_filename(),
190
 
                         '/home/bogus/.bazaar/bazaar.conf')
191
 
 
192
 
    def test_branches_config_filename(self):
193
 
        self.assertEqual(config.branches_config_filename(),
194
 
                         '/home/bogus/.bazaar/branches.conf')
195
 
 
196
 
class TestIniConfig(TestCase):
197
 
 
198
 
    def test_contructs(self):
199
 
        my_config = config.IniBasedConfig("nothing")
200
 
 
201
 
    def test_from_fp(self):
202
 
        config_file = StringIO(sample_config_text)
203
 
        my_config = config.IniBasedConfig(None)
204
 
        self.failUnless(
205
 
            isinstance(my_config._get_parser(file=config_file),
206
 
                        ConfigObj))
207
 
 
208
 
    def test_cached(self):
209
 
        config_file = StringIO(sample_config_text)
210
 
        my_config = config.IniBasedConfig(None)
211
 
        parser = my_config._get_parser(file=config_file)
212
 
        self.failUnless(my_config._get_parser() is parser)
213
 
 
214
 
 
215
 
class TestGetConfig(TestCase):
216
 
 
217
 
    def test_constructs(self):
218
 
        my_config = config.GlobalConfig()
219
 
 
220
 
    def test_calls_read_filenames(self):
221
 
        # replace the class that is constructured, to check its parameters
222
 
        oldparserclass = config.ConfigObj
223
 
        config.ConfigObj = InstrumentedConfigObj
224
 
        my_config = config.GlobalConfig()
225
 
        try:
226
 
            parser = my_config._get_parser()
227
 
        finally:
228
 
            config.ConfigObj = oldparserclass
229
 
        self.failUnless(isinstance(parser, InstrumentedConfigObj))
230
 
        self.assertEqual(parser._calls, [('__init__', config.config_filename())])
231
 
 
232
 
 
233
 
class TestBranchConfig(TestCaseInTempDir):
234
 
 
235
 
    def test_constructs(self):
236
 
        branch = FakeBranch()
237
 
        my_config = config.BranchConfig(branch)
238
 
        self.assertRaises(TypeError, config.BranchConfig)
239
 
 
240
 
    def test_get_location_config(self):
241
 
        branch = FakeBranch()
242
 
        my_config = config.BranchConfig(branch)
243
 
        location_config = my_config._get_location_config()
244
 
        self.assertEqual(branch.base, location_config.location)
245
 
        self.failUnless(location_config is my_config._get_location_config())
246
 
 
247
 
 
248
 
class TestGlobalConfigItems(TestCase):
249
 
 
250
 
    def test_user_id(self):
251
 
        config_file = StringIO(sample_config_text)
252
 
        my_config = config.GlobalConfig()
253
 
        my_config._parser = my_config._get_parser(file=config_file)
254
 
        self.assertEqual("Robert Collins <robertc@example.com>",
255
 
                         my_config._get_user_id())
256
 
 
257
 
    def test_absent_user_id(self):
258
 
        config_file = StringIO("")
259
 
        my_config = config.GlobalConfig()
260
 
        my_config._parser = my_config._get_parser(file=config_file)
261
 
        self.assertEqual(None, my_config._get_user_id())
262
 
 
263
 
    def test_configured_editor(self):
264
 
        config_file = StringIO(sample_config_text)
265
 
        my_config = config.GlobalConfig()
266
 
        my_config._parser = my_config._get_parser(file=config_file)
267
 
        self.assertEqual("vim", my_config.get_editor())
268
 
 
269
 
    def test_signatures_always(self):
270
 
        config_file = StringIO(sample_always_signatures)
271
 
        my_config = config.GlobalConfig()
272
 
        my_config._parser = my_config._get_parser(file=config_file)
273
 
        self.assertEqual(config.CHECK_ALWAYS,
274
 
                         my_config.signature_checking())
275
 
        self.assertEqual(True, my_config.signature_needed())
276
 
 
277
 
    def test_signatures_if_possible(self):
278
 
        config_file = StringIO(sample_maybe_signatures)
279
 
        my_config = config.GlobalConfig()
280
 
        my_config._parser = my_config._get_parser(file=config_file)
281
 
        self.assertEqual(config.CHECK_IF_POSSIBLE,
282
 
                         my_config.signature_checking())
283
 
        self.assertEqual(False, my_config.signature_needed())
284
 
 
285
 
    def test_signatures_ignore(self):
286
 
        config_file = StringIO(sample_ignore_signatures)
287
 
        my_config = config.GlobalConfig()
288
 
        my_config._parser = my_config._get_parser(file=config_file)
289
 
        self.assertEqual(config.CHECK_NEVER,
290
 
                         my_config.signature_checking())
291
 
        self.assertEqual(False, my_config.signature_needed())
292
 
 
293
 
    def _get_sample_config(self):
294
 
        config_file = StringIO(sample_config_text)
295
 
        my_config = config.GlobalConfig()
296
 
        my_config._parser = my_config._get_parser(file=config_file)
297
 
        return my_config
298
 
 
299
 
    def test_gpg_signing_command(self):
300
 
        my_config = self._get_sample_config()
301
 
        self.assertEqual("gnome-gpg", my_config.gpg_signing_command())
302
 
        self.assertEqual(False, my_config.signature_needed())
303
 
 
304
 
    def _get_empty_config(self):
305
 
        config_file = StringIO("")
306
 
        my_config = config.GlobalConfig()
307
 
        my_config._parser = my_config._get_parser(file=config_file)
308
 
        return my_config
309
 
 
310
 
    def test_gpg_signing_command_unset(self):
311
 
        my_config = self._get_empty_config()
312
 
        self.assertEqual("gpg", my_config.gpg_signing_command())
313
 
 
314
 
    def test_get_user_option_default(self):
315
 
        my_config = self._get_empty_config()
316
 
        self.assertEqual(None, my_config.get_user_option('no_option'))
317
 
 
318
 
    def test_get_user_option_global(self):
319
 
        my_config = self._get_sample_config()
320
 
        self.assertEqual("something",
321
 
                         my_config.get_user_option('user_global_option'))
322
 
        
323
 
    def test_post_commit_default(self):
324
 
        my_config = self._get_sample_config()
325
 
        self.assertEqual(None, my_config.post_commit())
326
 
 
327
 
 
328
 
 
329
 
class TestLocationConfig(TestCase):
330
 
 
331
 
    def test_constructs(self):
332
 
        my_config = config.LocationConfig('http://example.com')
333
 
        self.assertRaises(TypeError, config.LocationConfig)
334
 
 
335
 
    def test_branch_calls_read_filenames(self):
336
 
        # This is testing the correct file names are provided.
337
 
        # TODO: consolidate with the test for GlobalConfigs filename checks.
338
 
        #
339
 
        # replace the class that is constructured, to check its parameters
340
 
        oldparserclass = config.ConfigObj
341
 
        config.ConfigObj = InstrumentedConfigObj
342
 
        my_config = config.LocationConfig('http://www.example.com')
343
 
        try:
344
 
            parser = my_config._get_parser()
345
 
        finally:
346
 
            config.ConfigObj = oldparserclass
347
 
        self.failUnless(isinstance(parser, InstrumentedConfigObj))
348
 
        self.assertEqual(parser._calls,
349
 
                         [('__init__', config.branches_config_filename())])
350
 
 
351
 
    def test_get_global_config(self):
352
 
        my_config = config.LocationConfig('http://example.com')
353
 
        global_config = my_config._get_global_config()
354
 
        self.failUnless(isinstance(global_config, config.GlobalConfig))
355
 
        self.failUnless(global_config is my_config._get_global_config())
356
 
 
357
 
    def test__get_section_no_match(self):
358
 
        self.get_location_config('/')
359
 
        self.assertEqual(None, self.my_config._get_section())
360
 
        
361
 
    def test__get_section_exact(self):
362
 
        self.get_location_config('http://www.example.com')
363
 
        self.assertEqual('http://www.example.com',
364
 
                         self.my_config._get_section())
365
 
   
366
 
    def test__get_section_suffix_does_not(self):
367
 
        self.get_location_config('http://www.example.com-com')
368
 
        self.assertEqual(None, self.my_config._get_section())
369
 
 
370
 
    def test__get_section_subdir_recursive(self):
371
 
        self.get_location_config('http://www.example.com/com')
372
 
        self.assertEqual('http://www.example.com',
373
 
                         self.my_config._get_section())
374
 
 
375
 
    def test__get_section_subdir_matches(self):
376
 
        self.get_location_config('http://www.example.com/useglobal')
377
 
        self.assertEqual('http://www.example.com/useglobal',
378
 
                         self.my_config._get_section())
379
 
 
380
 
    def test__get_section_subdir_nonrecursive(self):
381
 
        self.get_location_config(
382
 
            'http://www.example.com/useglobal/childbranch')
383
 
        self.assertEqual('http://www.example.com',
384
 
                         self.my_config._get_section())
385
 
 
386
 
    def test__get_section_subdir_trailing_slash(self):
387
 
        self.get_location_config('/b')
388
 
        self.assertEqual('/b/', self.my_config._get_section())
389
 
 
390
 
    def test__get_section_subdir_child(self):
391
 
        self.get_location_config('/a/foo')
392
 
        self.assertEqual('/a/*', self.my_config._get_section())
393
 
 
394
 
    def test__get_section_subdir_child_child(self):
395
 
        self.get_location_config('/a/foo/bar')
396
 
        self.assertEqual('/a/', self.my_config._get_section())
397
 
 
398
 
    def test__get_section_trailing_slash_with_children(self):
399
 
        self.get_location_config('/a/')
400
 
        self.assertEqual('/a/', self.my_config._get_section())
401
 
 
402
 
    def test__get_section_explicit_over_glob(self):
403
 
        self.get_location_config('/a/c')
404
 
        self.assertEqual('/a/c', self.my_config._get_section())
405
 
 
406
 
    def get_location_config(self, location, global_config=None):
407
 
        if global_config is None:
408
 
            global_file = StringIO(sample_config_text)
409
 
        else:
410
 
            global_file = StringIO(global_config)
411
 
        branches_file = StringIO(sample_branches_text)
412
 
        self.my_config = config.LocationConfig(location)
413
 
        self.my_config._get_parser(branches_file)
414
 
        self.my_config._get_global_config()._get_parser(global_file)
415
 
 
416
 
    def test_location_without_username(self):
417
 
        self.get_location_config('http://www.example.com/useglobal')
418
 
        self.assertEqual('Robert Collins <robertc@example.com>',
419
 
                         self.my_config.username())
420
 
 
421
 
    def test_location_not_listed(self):
422
 
        self.get_location_config('/home/robertc/sources')
423
 
        self.assertEqual('Robert Collins <robertc@example.com>',
424
 
                         self.my_config.username())
425
 
 
426
 
    def test_overriding_location(self):
427
 
        self.get_location_config('http://www.example.com/foo')
428
 
        self.assertEqual('Robert Collins <robertc@example.org>',
429
 
                         self.my_config.username())
430
 
 
431
 
    def test_signatures_not_set(self):
432
 
        self.get_location_config('http://www.example.com',
433
 
                                 global_config=sample_ignore_signatures)
434
 
        self.assertEqual(config.CHECK_NEVER,
435
 
                         self.my_config.signature_checking())
436
 
 
437
 
    def test_signatures_never(self):
438
 
        self.get_location_config('/a/c')
439
 
        self.assertEqual(config.CHECK_NEVER,
440
 
                         self.my_config.signature_checking())
441
 
        
442
 
    def test_signatures_when_available(self):
443
 
        self.get_location_config('/a/', global_config=sample_ignore_signatures)
444
 
        self.assertEqual(config.CHECK_IF_POSSIBLE,
445
 
                         self.my_config.signature_checking())
446
 
        
447
 
    def test_signatures_always(self):
448
 
        self.get_location_config('/b')
449
 
        self.assertEqual(config.CHECK_ALWAYS,
450
 
                         self.my_config.signature_checking())
451
 
        
452
 
    def test_gpg_signing_command(self):
453
 
        self.get_location_config('/b')
454
 
        self.assertEqual("gnome-gpg", self.my_config.gpg_signing_command())
455
 
 
456
 
    def test_gpg_signing_command_missing(self):
457
 
        self.get_location_config('/a')
458
 
        self.assertEqual("false", self.my_config.gpg_signing_command())
459
 
 
460
 
    def test_get_user_option_global(self):
461
 
        self.get_location_config('/a')
462
 
        self.assertEqual('something',
463
 
                         self.my_config.get_user_option('user_global_option'))
464
 
 
465
 
    def test_get_user_option_local(self):
466
 
        self.get_location_config('/a')
467
 
        self.assertEqual('local',
468
 
                         self.my_config.get_user_option('user_local_option'))
469
 
        
470
 
    def test_post_commit_default(self):
471
 
        self.get_location_config('/a/c')
472
 
        self.assertEqual('bzrlib.selftest.testconfig.post_commit',
473
 
                         self.my_config.post_commit())
474
 
 
475
 
    def test_set_user_setting_sets_and_saves(self):
476
 
        # TODO RBC 20051029 test hat mkdir ~/.bazaar is called ..
477
 
        self.get_location_config('/a/c')
478
 
        record = InstrumentedConfigObj("foo")
479
 
        self.my_config._parser = record
480
 
        self.my_config.set_user_option('foo', 'bar')
481
 
        self.assertEqual([('__contains__', '/a/c'),
482
 
                          ('__contains__', '/a/c/'),
483
 
                          ('__setitem__', '/a/c', {}),
484
 
                          ('__getitem__', '/a/c'),
485
 
                          ('__setitem__', 'foo', 'bar'),
486
 
                          ('write',)],
487
 
                         record._calls[1:])
488
 
 
489
 
 
490
 
class TestBranchConfigItems(TestCase):
491
 
 
492
 
    def test_user_id(self):
493
 
        branch = FakeBranch()
494
 
        my_config = config.BranchConfig(branch)
495
 
        self.assertEqual("Robert Collins <robertc@example.net>",
496
 
                         my_config._get_user_id())
497
 
        branch.email = "John"
498
 
        self.assertEqual("John", my_config._get_user_id())
499
 
 
500
 
    def test_not_set_in_branch(self):
501
 
        branch = FakeBranch()
502
 
        my_config = config.BranchConfig(branch)
503
 
        branch.email = None
504
 
        config_file = StringIO(sample_config_text)
505
 
        (my_config._get_location_config().
506
 
            _get_global_config()._get_parser(config_file))
507
 
        self.assertEqual("Robert Collins <robertc@example.com>",
508
 
                         my_config._get_user_id())
509
 
        branch.email = "John"
510
 
        self.assertEqual("John", my_config._get_user_id())
511
 
 
512
 
    def test_BZREMAIL_OVERRIDES(self):
513
 
        os.environ['BZREMAIL'] = "Robert Collins <robertc@example.org>"
514
 
        branch = FakeBranch()
515
 
        my_config = config.BranchConfig(branch)
516
 
        self.assertEqual("Robert Collins <robertc@example.org>",
517
 
                         my_config.username())
518
 
    
519
 
    def test_signatures_forced(self):
520
 
        branch = FakeBranch()
521
 
        my_config = config.BranchConfig(branch)
522
 
        config_file = StringIO(sample_always_signatures)
523
 
        (my_config._get_location_config().
524
 
            _get_global_config()._get_parser(config_file))
525
 
        self.assertEqual(config.CHECK_ALWAYS, my_config.signature_checking())
526
 
 
527
 
    def test_gpg_signing_command(self):
528
 
        branch = FakeBranch()
529
 
        my_config = config.BranchConfig(branch)
530
 
        config_file = StringIO(sample_config_text)
531
 
        (my_config._get_location_config().
532
 
            _get_global_config()._get_parser(config_file))
533
 
        self.assertEqual('gnome-gpg', my_config.gpg_signing_command())
534
 
 
535
 
    def test_get_user_option_global(self):
536
 
        branch = FakeBranch()
537
 
        my_config = config.BranchConfig(branch)
538
 
        config_file = StringIO(sample_config_text)
539
 
        (my_config._get_location_config().
540
 
            _get_global_config()._get_parser(config_file))
541
 
        self.assertEqual('something',
542
 
                         my_config.get_user_option('user_global_option'))
543
 
 
544
 
    def test_post_commit_default(self):
545
 
        branch = FakeBranch()
546
 
        branch.base='/a/c'
547
 
        my_config = config.BranchConfig(branch)
548
 
        config_file = StringIO(sample_config_text)
549
 
        (my_config._get_location_config().
550
 
            _get_global_config()._get_parser(config_file))
551
 
        branch_file = StringIO(sample_branches_text)
552
 
        my_config._get_location_config()._get_parser(branch_file)
553
 
        self.assertEqual('bzrlib.selftest.testconfig.post_commit',
554
 
                         my_config.post_commit())