~abentley/bzrtools/bzrtools.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
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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
import os.path
from bzrlib.diff import _patch_header_date
import bzrlib.tests

from bzrlib.plugins.bzrtools.hunk_selector import (
    ShelveHunkSelector,
    UnshelveHunkSelector,
    )
from bzrlib.plugins.bzrtools.errors import NoColor
from bzrlib.plugins.bzrtools import command
from bzrlib.plugins.bzrtools.command_classes import cmd_shelf1


class ShelfTests(bzrlib.tests.TestCaseWithTransport):
    ORIGINAL = '\n\nhello test world\n\n'
    MODIFIED = '\n\ngoodbye test world\n\n'
    DIFF_HEADER = "=== modified file '%(filename)s'\n"
    DIFF_1 = """--- %(filename)s\t%(old_date)s
+++ %(filename)s\t%(new_date)s
@@ -1,4 +1,4 @@
 
 
-hello test world
+goodbye test world
 
"""
    DIFF_2 = """--- test_file\t%(old_date)s
+++ test_file\t%(new_date)s
@@ -1,4 +1,4 @@
 
 
-goodbye test world
+hello test world
 
"""
    def setUp(self):
        bzrlib.tests.TestCaseWithTransport.setUp(self)
        command._testing = True
        self.addCleanup(command._stop_testing)

    def _check_diff(self, diff=DIFF_1, filename='test_file'):
        old_tree = self.tree.basis_tree()
        old_tree.lock_read()
        self.tree.lock_read()
        try:
            old_date = _patch_header_date(old_tree,
                                          old_tree.inventory.path2id(filename),
                                          filename)
            new_date = _patch_header_date(self.tree,
                self.tree.inventory.path2id(filename), filename)
        finally:
            self.tree.unlock()
            old_tree.unlock()
        keys = { 'filename' : filename , 'old_date': old_date,
                 'new_date': new_date}
        hdr  = self.DIFF_HEADER % keys
        diff = diff % keys
        self.assertEqual(self.run_bzr('diff', retcode=1)[0], hdr + diff + '\n')

    def _check_shelf(self, idx, diff=DIFF_1, filename='test_file',
                     new_date=None):
        old_tree = self.tree.basis_tree()
        old_tree.lock_read()
        try:
            old_date = _patch_header_date(old_tree,
                                          old_tree.inventory.path2id(filename),
                                          filename)
        finally:
            old_tree.unlock()
        diff = diff % { 'filename' : filename, 'old_date': old_date,
                        'new_date': new_date}
        shelf = open(os.path.join(self.tree.basedir,
                '.shelf/shelves/default/' + idx)).read()
        shelf = shelf[shelf.index('\n') + 1:] # skip the message
        self.assertEqual(shelf, diff)

    def test_shelf(self):
        self.__test_loop(1)

    def test_shelf_multi(self):
        self.__test_loop(10)

    def __test_loop(self, count):
        self.tree = self.make_branch_and_tree('.')
        self.__create_and_add_test_file()
        for counter in range(count):
            # Modify the test file
            # write in binary mode because on win32 line-endings should be
            # LF
            f = file('test_file', 'wb')
            f.write(self.MODIFIED)
            f.close()

            self._check_diff()

            self.tree.lock_write()
            try:
                new_date = _patch_header_date(self.tree,
                    self.tree.inventory.path2id('test_file'), 'test_file')
            finally:
                self.tree.unlock()

            # Shelve the changes
            self.run_bzr('shelve1 --all', retcode=0)

            # Make sure there is no diff anymore
            self.assertEqual(self.run_bzr('diff', retcode=0)[0], '')

            # Make sure the file is actually back the way it was
            self.assertEqual(file('test_file').read(), self.ORIGINAL)

            self._check_shelf('00', new_date=new_date)

            # Unshelve
            self.run_bzr('unshelve1 --all', retcode=0)

            self._check_diff()

            # Check the shelved patch was backed up
            self._check_shelf('00~', new_date=new_date)

            # Make sure the file is back the way it should be
            self.assertEqual(file('test_file').read(), self.MODIFIED)

    def test_shelf_nothing_to_shelve(self):
        import os.path
        self.tree = self.make_branch_and_tree('.')
        self.__create_and_add_test_file()

        # Shelve the changes
        self.run_bzr('shelve1 --all', retcode=3)

        if os.path.exists(os.path.join(self.tree.branch.base,
                '.shelf/shelves/default/00')):
            self.fail("Shelf exists, but it shouldn't")

    def __create_and_add_test_file(self, filename='test_file'):
        # write in binary mode because on win32 line-endings should be LF
        f = open(filename, 'wb')
        f.write(self.ORIGINAL)
        f.close()
        self.tree.add(self.tree.relpath(os.path.join(os.getcwd(), filename)))
        self.tree.commit(message='add %s' % filename)

    def test_shelf_with_revision(self):
        self.tree = self.make_branch_and_tree('.')

        self.__create_and_add_test_file()

        # Modify the test file and commit it
        self.build_tree_contents([('test_file', self.MODIFIED)])
        self.tree.commit(message='update test_file')

        # Shelve the changes
        self.run_bzr('shelve1 --all -r 1', retcode=0)

        self._check_diff(self.DIFF_2)

        # Make sure the file is the way it should be
        self.assertEqual(file('test_file').read(), self.ORIGINAL)

        # Unshelve
        self.run_bzr('unshelve1 --all', retcode=0)

        # Make sure the file is back the way it should be
        self.assertEqual(file('test_file').read(), self.MODIFIED)

    def test_shelf_with_two_revisions(self):
        self.tree = self.make_branch_and_tree('.')

        stdout, stderr = self.run_bzr('shelve1 --all -r 1..2', retcode=None)

        self.assertEqual(stderr.split('\n')[0],
            'bzr: ERROR: shelve only accepts a single revision parameter.')

    def test_shelf_show_basic(self):
        self.tree = self.make_branch_and_tree('.')
        self.__create_and_add_test_file()
        self.__test_show(self.tree, '00')

    def __test_show(self, tree, patch):
        # Modify the test file
        self.build_tree_contents([('test_file', 'patch %s\n' % patch)])

        # Shelve the changes
        self.run_bzr('shelve1 --all', retcode=0)

        # Make sure there is no diff anymore
        self.assertEqual(self.run_bzr('diff', retcode=0)[0], '')

        # Check the shelf is right
        shelf = open(os.path.join(self.tree.basedir,
                    '.shelf/shelves/default', patch)).read()
        self.assertTrue('patch %s' % patch in shelf)

        # Check the shown output is right
        shown = self.run_bzr('shelf1 show %s' % patch, retcode=0)[0]
        self.assertEqual(shown, shelf)

    def test_shelf_show_multi(self):
        self.tree = self.make_branch_and_tree('.')
        self.__create_and_add_test_file()
        self.__test_show(self.tree, '00')
        self.__test_show(self.tree, '01')
        self.__test_show(self.tree, '02')

        # Now check we can show a previously shelved patch
        shelf = open(os.path.join(self.tree.basedir,
                    '.shelf/shelves/default/00')).read()
        self.assertTrue('patch 00' in shelf)

        # Check the shown output is right
        shown = self.run_bzr('shelf1 show 00', retcode=0)[0]
        self.assertEqual(shown, shelf)

    def test_shelf_show_unspecified(self):
        self.tree = self.make_branch_and_tree('.')
        self.__create_and_add_test_file()
        self.__test_show(self.tree, '00')
        self.__test_show(self.tree, '01')
        self.__test_show(self.tree, '02')

        # Check that not specifying at patch gets us the most recent
        shelf = open(os.path.join(self.tree.basedir,
                    '.shelf/shelves/default/02')).read()
        self.assertTrue('patch 02' in shelf)

        # Check the shown output is right
        shown = self.run_bzr('shelf1 show', retcode=0)[0]
        self.assertEqual(shown, shelf)

    def test_shelf_show_with_no_patch(self):
        self.tree = self.make_branch_and_tree('.')
        stderr = self.run_bzr('shelf1 show 00', retcode=None)[1]
        self.assertTrue("Patch '00' doesn't exist on shelf default!" in stderr)

    def test_shelf_unshelve_failure(self):
        self.tree = self.make_branch_and_tree('.')

        self.__create_and_add_test_file()

        # Modify the test file
        file('test_file', 'w').write(self.MODIFIED)

        # Shelve the changes
        self.run_bzr('shelve1 --all', retcode=0)

        # Write an unapplyable patch into the shelf
        shelf = open(os.path.join(self.tree.basedir,
                    '.shelf/shelves/default/00'), 'w')
        shelf.write(self.DIFF_2)
        shelf.close()

        # Unshelve, should fail
        self.run_bzr('unshelve1 --all', retcode=3)

        # Make sure the patch is still there, eventhough it's broken
        shelf = open(os.path.join(self.tree.basedir,
                    '.shelf/shelves/default/00')).read()
        self.assertEqual(shelf, self.DIFF_2)

        # Working tree should be unchanged
        diff = self.run_bzr('diff', retcode=0)[0]
        self.assertEqual(diff, '')

    def test_shelf_unshelve_failure_two_hunks(self):
        self.tree = self.make_branch_and_tree('.')

        self.__create_and_add_test_file()
        self.__create_and_add_test_file(filename='test_file2')

        # Modify the test files
        file('test_file', 'w').write(self.MODIFIED)
        file('test_file2', 'w').write(self.MODIFIED)

        # Shelve the changes
        self.run_bzr('shelve1 --all', retcode=0)

        # Put the changes to test_file back, the shelved patch won't apply now
        file('test_file', 'w').write(self.MODIFIED)
        self.tree.commit(message='screw up test_file')

        # Unshelve, should fail
        self.run_bzr('unshelve1 --all', retcode=3)

        # Working tree should be unchanged
        diff = self.run_bzr('diff', retcode=0)[0]
        self.assertEqual(diff, '')

        # Force should succeed and modify test_file2, but leave shelf
        self.run_bzr('unshelve1 --force --all', retcode=0)
        self.assertEqual(open('test_file2').read(), self.MODIFIED)
        self.assertTrue(os.path.exists('.shelf/shelves/default/00'))

    def test_shelf_after_unshelve(self):
        self.tree = self.make_branch_and_tree('.')

        self.__create_and_add_test_file()
        self.__create_and_add_test_file(filename='test_file2')

        # Modify the test files
        file('test_file', 'w').write(self.MODIFIED)
        file('test_file2', 'w').write(self.MODIFIED)

        # Shelve the changes
        self.run_bzr('shelve1 --all test_file', retcode=0)
        self.run_bzr('shelve1 --all test_file2', retcode=0)

        # Unshelve
        self.run_bzr('unshelve1 --all', retcode=0)

        # We should now have 00 and 01~
        self.assertTrue(os.path.exists('.shelf/shelves/default/00'))
        self.assertTrue(os.path.exists('.shelf/shelves/default/01~'))

        # Check ls works
        lines = self.run_bzr('shelf1 ls', retcode=0)[0].split('\n')
        for line in lines:
            self.assertFalse(line.startswith(' 01'))

        # Unshelve, if unshelve is confused by the backup it will fail
        self.run_bzr('unshelve1 --all', retcode=0)

    def test_shelf_delete(self):
        self.tree = self.make_branch_and_tree('.')
        self.tree.lock_write()
        try:
            self.__create_and_add_test_file()
            self.__create_and_add_test_file(filename='test_file2')

            # Modify the test files
            # write in binary mode because on win32 line-endings should be LF
            f = file('test_file', 'wb')
            f.write(self.MODIFIED)
            f.close()
            f = file('test_file2', 'wb')
            f.write(self.MODIFIED)
            f.close()
            new_date = _patch_header_date(self.tree,
                self.tree.inventory.path2id('test_file'), 'test_file')
        finally:
            self.tree.unlock()

        # Shelve the changes
        self.run_bzr('shelve1 --all test_file', retcode=0)
        self.run_bzr('shelve1 --all test_file2', retcode=0)

        self._check_shelf('00', new_date=new_date)

        # Delete 00
        self.run_bzr('shelf1 delete 00', retcode=0)

        # We should now have 01 but not 00, but we should have 00~
        self.assertFalse(os.path.exists('.shelf/shelves/default/00'))
        self.assertTrue(os.path.exists('.shelf/shelves/default/00~'))
        self.assertTrue(os.path.exists('.shelf/shelves/default/01'))

        # Check the backup is right
        self._check_shelf('00~', new_date=new_date)

        # Check ls works
        lines = self.run_bzr('shelf1 ls', retcode=0)[0].split('\n')
        for line in lines:
            self.assertFalse(line.startswith(' 00'))

        # Unshelve should unshelve 01
        self.run_bzr('unshelve1 --all', retcode=0)
        self.assertEqual(file('test_file2').read(), self.MODIFIED)

    def test_shelf_gaps(self):
        self.tree = self.make_branch_and_tree('.')
        self.__create_and_add_test_file()
        file('test_file', 'w').write(self.MODIFIED)
        self.run_bzr('shelve1 --all test_file', retcode=0)
        file('test_file', 'w').write(self.MODIFIED)
        self.run_bzr('shelve1 --all test_file', retcode=0)

        # Now delete 00, leaving 01, next shelve should go into 02
        self.run_bzr('shelf1 delete 0', retcode=0)
        self.assertFalse(os.path.exists('.shelf/shelves/default/00'))
        self.assertFalse(os.path.exists('.shelf/shelves/default/02'))
        file('test_file', 'w').write(self.MODIFIED)
        self.run_bzr('shelve1 --all test_file', retcode=0)
        self.assertFalse(os.path.exists('.shelf/shelves/default/00'))
        self.assertTrue(os.path.exists('.shelf/shelves/default/02'))

    def test_shelf_upgrade(self):
        self.tree = self.make_branch_and_tree('.')

        self.__create_and_add_test_file()

        # Modify then shelve, so we're not upgrading to 00, just for kicks
        file('test_file', 'w').write(self.MODIFIED)
        self.run_bzr('shelve1 --all test_file', retcode=0)

        open('.bzr-shelf', 'w').write('First old shelf')
        open('.bzr-shelf-1', 'w').write('Second old shelf')
        open('.bzr-shelf-3', 'w').write('Fourth old shelf')

        # shelve and unshelve should bitch and do nothing
        file('test_file', 'w').write('blah blah blah')
        self.run_bzr('shelve1 --all', retcode=3)
        self.assertFalse(os.path.exists('.shelf/shelves/default/01'))
        self.assertEqual(file('test_file').read(), 'blah blah blah')
        self.run_bzr('unshelve1 --all', retcode=3)
        self.assertTrue(os.path.exists('.shelf/shelves/default/00'))

        # Upgrade, make sure it worked
        self.run_bzr('shelf1 upgrade', retcode=0)
        self.assertEqual(open('.shelf/shelves/default/01').read(),
                'First old shelf')
        self.assertEqual(open('.shelf/shelves/default/02').read(),
                'Second old shelf')
        self.assertEqual(open('.shelf/shelves/default/03').read(),
                'Fourth old shelf')

        # Check the old shelves got backed up right
        self.assertTrue(os.path.exists('.bzr-shelf~'))
        self.assertTrue(os.path.exists('.bzr-shelf-1~'))
        self.assertTrue(os.path.exists('.bzr-shelf-3~'))
        self.assertFalse(os.path.exists('.bzr-shelf'))
        self.assertFalse(os.path.exists('.bzr-shelf-1'))
        self.assertFalse(os.path.exists('.bzr-shelf-3'))

        # Shelve should work now
        self.run_bzr('shelve1 --all', retcode=0)

    def test_shelf_p1_patch(self):
        self.tree = self.make_branch_and_tree('.')

        self.__create_and_add_test_file()

        # Run a benign shelf command to setup .shelf for us
        self.run_bzr('shelf1 ls', retcode=0)

        old_tree = self.tree.basis_tree()
        old_tree.lock_read()
        self.tree.lock_read()
        try:
            old_date = _patch_header_date(old_tree,
                old_tree.inventory.path2id('test_file'),
                                          'test_file')
            new_date = _patch_header_date(self.tree,
                self.tree.inventory.path2id('test_file'), 'test_file')
        finally:
            old_tree.unlock()
            self.tree.unlock()
        # Fake a -p0 shelved patch
        diff = self.DIFF_1 % { 'filename' : 'test_file', 'old_date': old_date,
                               'new_date' : new_date}
        diff = diff.replace('--- ', '--- a/')
        diff = diff.replace('+++ ', '+++ b/')
        open('.shelf/shelves/default/00', 'w').write(diff)

        # This should work
        self.run_bzr('unshelve1 --all', retcode=0)

        self._check_diff()

    def test_shelf_shelve_in_subdir(self):
        self.tree = self.make_branch_and_tree('.')

        subdir = 'subdir'
        os.mkdir(subdir)
        self.tree.add(subdir)
        os.chdir(subdir)

        self.__create_and_add_test_file()

        # Modify the test file
        # write in binary mode because on win32 line-endings should be LF
        f = file('test_file', 'wb')
        f.write(self.MODIFIED)
        f.close()

        # Shelve the changes
        self.run_bzr('shelve1 --all', retcode=0)

        # Working tree should be unchanged
        diff = self.run_bzr('diff', retcode=0)[0]
        self.assertEqual(diff, '')

        # Unshelve, should succeed
        self.run_bzr('unshelve1 --all', retcode=0)

        self._check_diff(filename='subdir/test_file')

        # Make sure relative filenames work ok
        self.run_bzr('shelve1 test_file --all', retcode=0)

    def test_shelf_shelf_bogus_subcommand(self):
        self.tree = self.make_branch_and_tree('.')
        self.run_bzr('shelf1 foo', retcode=3) # <- retcode == 3

    def test_shelf_OOO_unshelve(self):
        self.tree = self.make_branch_and_tree('.')

        for i in range(1, 5):
            self.__create_and_add_test_file(filename='test_file%d' % i)

        # Modify the test files
        for i in range(1, 5):
            file('test_file%d' % i, 'w').write(self.MODIFIED)

        # Shelve the changes
        for i in range(1, 5):
            self.run_bzr(['shelve1', '--all', 'test_file%d' % i], retcode=0)

        # Check shelving worked
        for i in range(1, 5):
            self.assertEqual(file('test_file%d' % i).read(), self.ORIGINAL)

        # We should now have 00-03
        for i in range(0, 4):
            self.assertTrue(os.path.exists('.shelf/shelves/default/0%d' % i))

        # Unshelve 00
        self.run_bzr('unshelve1 --all 00', retcode=0)
        self.assertEqual(file('test_file1').read(), self.MODIFIED)

        # Check ls works
        lines = self.run_bzr('shelf1 ls', retcode=0)[0].split('\n')
        for line in lines:
            self.assertFalse(line.startswith(' 00'))

        # Check we can reshelve once we've unshelved out of order, should be 04
        self.assertFalse(os.path.exists('.shelf/shelves/default/04'))
        self.run_bzr('shelve1 --all')
        self.assertTrue(os.path.exists('.shelf/shelves/default/04'))

        # Check ls works
        text = self.run_bzr('shelf1 ls', retcode=0)[0]
        for line in text.split('\n'):
            self.assertFalse(line.startswith(' 00'))

        # We now have 01,02,03,04
        # Unshelve 02
        self.run_bzr('unshelve1 --all 02', retcode=0)
        self.assertEqual(file('test_file3').read(), self.MODIFIED)

        # Unshelve the default, this is the reshelved 00, hence modifies file 1
        self.run_bzr('unshelve1 --all', retcode=0)
        self.assertEqual(file('test_file1').read(), self.MODIFIED)

    def test_shelf_switch_basic(self):
        self.tree = self.make_branch_and_tree('.')
        self.__create_and_add_test_file()

        # This should go to "default"
        file('test_file', 'w').write(self.MODIFIED)
        self.run_bzr('shelve1 --all test_file', retcode=0)

        # Switch to "other"
        self.run_bzr('shelf1 switch other', retcode=0)
        file('test_file', 'w').write(self.MODIFIED)
        self.run_bzr('shelve1 --all test_file', retcode=0)

        # Check it worked
        self.assertTrue(os.path.exists('.shelf/shelves/default/00'))
        self.assertFalse(os.path.exists('.shelf/shelves/default/01'))
        self.assertTrue(os.path.exists('.shelf/shelves/other/00'))

        # Switch back
        self.run_bzr('shelf1 switch default', retcode=0)
        file('test_file', 'w').write(self.MODIFIED)
        self.run_bzr('shelve1 --all test_file', retcode=0)

        # Check that worked
        self.assertTrue(os.path.exists('.shelf/shelves/default/01'))
        self.assertFalse(os.path.exists('.shelf/shelves/other/01'))

    def test_shelf_binary(self):
        self.tree = self.make_branch_and_tree('.')
        self.build_tree_contents([('file', '\x00')])
        self.tree.add('file')
        self.run_bzr_error(['Changes involve binary files.'], 'shelve1 --all')

    def test_shelf_bad_patch_arg(self):
        self.tree = self.make_branch_and_tree('.')

        # Check the bad arg handling
        stdout, error = self.run_bzr('unshelve1 01', retcode=3)
        self.assertTrue("Patch '01' doesn't exist on shelf" in error)

        stdout, error = self.run_bzr('unshelve1 foo', retcode=3)
        self.assertTrue("Invalid patch name 'foo'" in error)

        # Hex and is cracky, so it shouldn't work
        stdout, error = self.run_bzr(['unshelve1', '0x00'], retcode=3)
        self.assertTrue("Invalid patch name '0x00'" in error)

    def test_color_hunk_selector(self):
        """Make sure NoColor is raised iff terminal.has_ansi_colors is False"""
        hs = ShelveHunkSelector([])
        hs = UnshelveHunkSelector([])
        try:
            from bzrlib.plugins.bzrtools import terminal
        except ImportError:
            from bzrtools import terminal
        old_has_ansi_colors = terminal.has_ansi_colors
        terminal.has_ansi_colors = lambda: False
        try:
            self.assertRaises(NoColor, ShelveHunkSelector, [], True)
            self.assertRaises(NoColor, UnshelveHunkSelector, [], True)
            terminal.has_ansi_colors = lambda: True
            hs = ShelveHunkSelector([], color=True)
            hs = UnshelveHunkSelector([], color=True)
        finally:
            terminal.has_ansi_colors = old_has_ansi_colors

    def test_no_color(self):
        """Ensure --no-color switch can be passed"""
        self.tree = self.make_branch_and_tree('.')

        subdir = 'subdir'
        os.mkdir(subdir)
        self.tree.add(subdir)
        os.chdir(subdir)

        self.__create_and_add_test_file()

        # Modify the test file
        # write in binary mode because on win32 line-endings should be LF
        f = file('test_file', 'wb')
        f.write(self.MODIFIED)
        f.close()
        stdout, error = self.run_bzr('shelve1 --all --no-color')
        stdout, error = self.run_bzr('unshelve1 --all --no-color')

    def test_shelf_help(self):
        self.assertContainsRe(cmd_shelf1().help(),
                              'list\n.*List the patches on the current shelf')

    def test_show_empty_shelf(self):
        self.tree = self.make_branch_and_tree('.')
        self.run_bzr_error(('No patches on shelf.',), 'shelf1 show')