Source

pypy / lib-python / 2.7 / test / test_shutil.py

Full commit
  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
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
# Copyright (C) 2003 Python Software Foundation

import unittest
import shutil
import tempfile
import sys
import stat
import os
import os.path
from os.path import splitdrive
from distutils.spawn import find_executable, spawn
from shutil import (_make_tarball, _make_zipfile, make_archive,
                    register_archive_format, unregister_archive_format,
                    get_archive_formats)
import tarfile
import warnings

from test import test_support
from test.test_support import TESTFN, check_warnings, captured_stdout

TESTFN2 = TESTFN + "2"

try:
    import grp
    import pwd
    UID_GID_SUPPORT = True
except ImportError:
    UID_GID_SUPPORT = False

try:
    import zlib
except ImportError:
    zlib = None

try:
    import zipfile
    ZIP_SUPPORT = True
except ImportError:
    ZIP_SUPPORT = find_executable('zip')

class TestShutil(unittest.TestCase):

    def setUp(self):
        super(TestShutil, self).setUp()
        self.tempdirs = []

    def tearDown(self):
        super(TestShutil, self).tearDown()
        while self.tempdirs:
            d = self.tempdirs.pop()
            shutil.rmtree(d, os.name in ('nt', 'cygwin'))

    def write_file(self, path, content='xxx'):
        """Writes a file in the given path.


        path can be a string or a sequence.
        """
        if isinstance(path, (list, tuple)):
            path = os.path.join(*path)
        f = open(path, 'w')
        try:
            f.write(content)
        finally:
            f.close()

    def mkdtemp(self):
        """Create a temporary directory that will be cleaned up.

        Returns the path of the directory.
        """
        d = tempfile.mkdtemp()
        self.tempdirs.append(d)
        return d
    def test_rmtree_errors(self):
        # filename is guaranteed not to exist
        filename = tempfile.mktemp()
        self.assertRaises(OSError, shutil.rmtree, filename)

    # See bug #1071513 for why we don't run this on cygwin
    # and bug #1076467 for why we don't run this as root.
    if (hasattr(os, 'chmod') and sys.platform[:6] != 'cygwin'
        and not (hasattr(os, 'geteuid') and os.geteuid() == 0)):
        def test_on_error(self):
            self.errorState = 0
            os.mkdir(TESTFN)
            self.childpath = os.path.join(TESTFN, 'a')
            f = open(self.childpath, 'w')
            f.close()
            old_dir_mode = os.stat(TESTFN).st_mode
            old_child_mode = os.stat(self.childpath).st_mode
            # Make unwritable.
            os.chmod(self.childpath, stat.S_IREAD)
            os.chmod(TESTFN, stat.S_IREAD)

            shutil.rmtree(TESTFN, onerror=self.check_args_to_onerror)
            # Test whether onerror has actually been called.
            self.assertEqual(self.errorState, 2,
                             "Expected call to onerror function did not happen.")

            # Make writable again.
            os.chmod(TESTFN, old_dir_mode)
            os.chmod(self.childpath, old_child_mode)

            # Clean up.
            shutil.rmtree(TESTFN)

    def check_args_to_onerror(self, func, arg, exc):
        # test_rmtree_errors deliberately runs rmtree
        # on a directory that is chmod 400, which will fail.
        # This function is run when shutil.rmtree fails.
        # 99.9% of the time it initially fails to remove
        # a file in the directory, so the first time through
        # func is os.remove.
        # However, some Linux machines running ZFS on
        # FUSE experienced a failure earlier in the process
        # at os.listdir.  The first failure may legally
        # be either.
        if self.errorState == 0:
            if func is os.remove:
                self.assertEqual(arg, self.childpath)
            else:
                self.assertIs(func, os.listdir,
                              "func must be either os.remove or os.listdir")
                self.assertEqual(arg, TESTFN)
            self.assertTrue(issubclass(exc[0], OSError))
            self.errorState = 1
        else:
            self.assertEqual(func, os.rmdir)
            self.assertEqual(arg, TESTFN)
            self.assertTrue(issubclass(exc[0], OSError))
            self.errorState = 2

    def test_rmtree_dont_delete_file(self):
        # When called on a file instead of a directory, don't delete it.
        handle, path = tempfile.mkstemp()
        os.fdopen(handle).close()
        self.assertRaises(OSError, shutil.rmtree, path)
        os.remove(path)

    def test_copytree_simple(self):
        def write_data(path, data):
            f = open(path, "w")
            f.write(data)
            f.close()

        def read_data(path):
            f = open(path)
            data = f.read()
            f.close()
            return data

        src_dir = tempfile.mkdtemp()
        dst_dir = os.path.join(tempfile.mkdtemp(), 'destination')

        write_data(os.path.join(src_dir, 'test.txt'), '123')

        os.mkdir(os.path.join(src_dir, 'test_dir'))
        write_data(os.path.join(src_dir, 'test_dir', 'test.txt'), '456')

        try:
            shutil.copytree(src_dir, dst_dir)
            self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'test.txt')))
            self.assertTrue(os.path.isdir(os.path.join(dst_dir, 'test_dir')))
            self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'test_dir',
                                                        'test.txt')))
            actual = read_data(os.path.join(dst_dir, 'test.txt'))
            self.assertEqual(actual, '123')
            actual = read_data(os.path.join(dst_dir, 'test_dir', 'test.txt'))
            self.assertEqual(actual, '456')
        finally:
            for path in (
                    os.path.join(src_dir, 'test.txt'),
                    os.path.join(dst_dir, 'test.txt'),
                    os.path.join(src_dir, 'test_dir', 'test.txt'),
                    os.path.join(dst_dir, 'test_dir', 'test.txt'),
                ):
                if os.path.exists(path):
                    os.remove(path)
            for path in (src_dir,
                    os.path.dirname(dst_dir)
                ):
                if os.path.exists(path):
                    shutil.rmtree(path)

    def test_copytree_with_exclude(self):

        def write_data(path, data):
            f = open(path, "w")
            f.write(data)
            f.close()

        def read_data(path):
            f = open(path)
            data = f.read()
            f.close()
            return data

        # creating data
        join = os.path.join
        exists = os.path.exists
        src_dir = tempfile.mkdtemp()
        try:
            dst_dir = join(tempfile.mkdtemp(), 'destination')
            write_data(join(src_dir, 'test.txt'), '123')
            write_data(join(src_dir, 'test.tmp'), '123')
            os.mkdir(join(src_dir, 'test_dir'))
            write_data(join(src_dir, 'test_dir', 'test.txt'), '456')
            os.mkdir(join(src_dir, 'test_dir2'))
            write_data(join(src_dir, 'test_dir2', 'test.txt'), '456')
            os.mkdir(join(src_dir, 'test_dir2', 'subdir'))
            os.mkdir(join(src_dir, 'test_dir2', 'subdir2'))
            write_data(join(src_dir, 'test_dir2', 'subdir', 'test.txt'), '456')
            write_data(join(src_dir, 'test_dir2', 'subdir2', 'test.py'), '456')


            # testing glob-like patterns
            try:
                patterns = shutil.ignore_patterns('*.tmp', 'test_dir2')
                shutil.copytree(src_dir, dst_dir, ignore=patterns)
                # checking the result: some elements should not be copied
                self.assertTrue(exists(join(dst_dir, 'test.txt')))
                self.assertTrue(not exists(join(dst_dir, 'test.tmp')))
                self.assertTrue(not exists(join(dst_dir, 'test_dir2')))
            finally:
                if os.path.exists(dst_dir):
                    shutil.rmtree(dst_dir)
            try:
                patterns = shutil.ignore_patterns('*.tmp', 'subdir*')
                shutil.copytree(src_dir, dst_dir, ignore=patterns)
                # checking the result: some elements should not be copied
                self.assertTrue(not exists(join(dst_dir, 'test.tmp')))
                self.assertTrue(not exists(join(dst_dir, 'test_dir2', 'subdir2')))
                self.assertTrue(not exists(join(dst_dir, 'test_dir2', 'subdir')))
            finally:
                if os.path.exists(dst_dir):
                    shutil.rmtree(dst_dir)

            # testing callable-style
            try:
                def _filter(src, names):
                    res = []
                    for name in names:
                        path = os.path.join(src, name)

                        if (os.path.isdir(path) and
                            path.split()[-1] == 'subdir'):
                            res.append(name)
                        elif os.path.splitext(path)[-1] in ('.py'):
                            res.append(name)
                    return res

                shutil.copytree(src_dir, dst_dir, ignore=_filter)

                # checking the result: some elements should not be copied
                self.assertTrue(not exists(join(dst_dir, 'test_dir2', 'subdir2',
                                        'test.py')))
                self.assertTrue(not exists(join(dst_dir, 'test_dir2', 'subdir')))

            finally:
                if os.path.exists(dst_dir):
                    shutil.rmtree(dst_dir)
        finally:
            shutil.rmtree(src_dir)
            shutil.rmtree(os.path.dirname(dst_dir))

    if hasattr(os, "symlink"):
        def test_dont_copy_file_onto_link_to_itself(self):
            # bug 851123.
            os.mkdir(TESTFN)
            src = os.path.join(TESTFN, 'cheese')
            dst = os.path.join(TESTFN, 'shop')
            try:
                f = open(src, 'w')
                f.write('cheddar')
                f.close()

                os.link(src, dst)
                self.assertRaises(shutil.Error, shutil.copyfile, src, dst)
                with open(src, 'r') as f:
                    self.assertEqual(f.read(), 'cheddar')
                os.remove(dst)

                # Using `src` here would mean we end up with a symlink pointing
                # to TESTFN/TESTFN/cheese, while it should point at
                # TESTFN/cheese.
                os.symlink('cheese', dst)
                self.assertRaises(shutil.Error, shutil.copyfile, src, dst)
                with open(src, 'r') as f:
                    self.assertEqual(f.read(), 'cheddar')
                os.remove(dst)
            finally:
                try:
                    shutil.rmtree(TESTFN)
                except OSError:
                    pass

        def test_rmtree_on_symlink(self):
            # bug 1669.
            os.mkdir(TESTFN)
            try:
                src = os.path.join(TESTFN, 'cheese')
                dst = os.path.join(TESTFN, 'shop')
                os.mkdir(src)
                os.symlink(src, dst)
                self.assertRaises(OSError, shutil.rmtree, dst)
            finally:
                shutil.rmtree(TESTFN, ignore_errors=True)

    if hasattr(os, "mkfifo"):
        # Issue #3002: copyfile and copytree block indefinitely on named pipes
        def test_copyfile_named_pipe(self):
            os.mkfifo(TESTFN)
            try:
                self.assertRaises(shutil.SpecialFileError,
                                  shutil.copyfile, TESTFN, TESTFN2)
                self.assertRaises(shutil.SpecialFileError,
                                  shutil.copyfile, __file__, TESTFN)
            finally:
                os.remove(TESTFN)

        def test_copytree_named_pipe(self):
            os.mkdir(TESTFN)
            try:
                subdir = os.path.join(TESTFN, "subdir")
                os.mkdir(subdir)
                pipe = os.path.join(subdir, "mypipe")
                os.mkfifo(pipe)
                try:
                    shutil.copytree(TESTFN, TESTFN2)
                except shutil.Error as e:
                    errors = e.args[0]
                    self.assertEqual(len(errors), 1)
                    src, dst, error_msg = errors[0]
                    self.assertEqual("`%s` is a named pipe" % pipe, error_msg)
                else:
                    self.fail("shutil.Error should have been raised")
            finally:
                shutil.rmtree(TESTFN, ignore_errors=True)
                shutil.rmtree(TESTFN2, ignore_errors=True)

    @unittest.skipUnless(zlib, "requires zlib")
    def test_make_tarball(self):
        # creating something to tar
        tmpdir = self.mkdtemp()
        self.write_file([tmpdir, 'file1'], 'xxx')
        self.write_file([tmpdir, 'file2'], 'xxx')
        os.mkdir(os.path.join(tmpdir, 'sub'))
        self.write_file([tmpdir, 'sub', 'file3'], 'xxx')

        tmpdir2 = self.mkdtemp()
        # force shutil to create the directory
        os.rmdir(tmpdir2)
        unittest.skipUnless(splitdrive(tmpdir)[0] == splitdrive(tmpdir2)[0],
                            "source and target should be on same drive")

        base_name = os.path.join(tmpdir2, 'archive')

        # working with relative paths to avoid tar warnings
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            _make_tarball(splitdrive(base_name)[1], '.')
        finally:
            os.chdir(old_dir)

        # check if the compressed tarball was created
        tarball = base_name + '.tar.gz'
        self.assertTrue(os.path.exists(tarball))

        # trying an uncompressed one
        base_name = os.path.join(tmpdir2, 'archive')
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            _make_tarball(splitdrive(base_name)[1], '.', compress=None)
        finally:
            os.chdir(old_dir)
        tarball = base_name + '.tar'
        self.assertTrue(os.path.exists(tarball))

    def _tarinfo(self, path):
        tar = tarfile.open(path)
        try:
            names = tar.getnames()
            names.sort()
            return tuple(names)
        finally:
            tar.close()

    def _create_files(self):
        # creating something to tar
        tmpdir = self.mkdtemp()
        dist = os.path.join(tmpdir, 'dist')
        os.mkdir(dist)
        self.write_file([dist, 'file1'], 'xxx')
        self.write_file([dist, 'file2'], 'xxx')
        os.mkdir(os.path.join(dist, 'sub'))
        self.write_file([dist, 'sub', 'file3'], 'xxx')
        os.mkdir(os.path.join(dist, 'sub2'))
        tmpdir2 = self.mkdtemp()
        base_name = os.path.join(tmpdir2, 'archive')
        return tmpdir, tmpdir2, base_name

    @unittest.skipUnless(zlib, "Requires zlib")
    @unittest.skipUnless(find_executable('tar') and find_executable('gzip'),
                         'Need the tar command to run')
    def test_tarfile_vs_tar(self):
        tmpdir, tmpdir2, base_name =  self._create_files()
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            _make_tarball(base_name, 'dist')
        finally:
            os.chdir(old_dir)

        # check if the compressed tarball was created
        tarball = base_name + '.tar.gz'
        self.assertTrue(os.path.exists(tarball))

        # now create another tarball using `tar`
        tarball2 = os.path.join(tmpdir, 'archive2.tar.gz')
        tar_cmd = ['tar', '-cf', 'archive2.tar', 'dist']
        gzip_cmd = ['gzip', '-f9', 'archive2.tar']
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            with captured_stdout() as s:
                spawn(tar_cmd)
                spawn(gzip_cmd)
        finally:
            os.chdir(old_dir)

        self.assertTrue(os.path.exists(tarball2))
        # let's compare both tarballs
        self.assertEqual(self._tarinfo(tarball), self._tarinfo(tarball2))

        # trying an uncompressed one
        base_name = os.path.join(tmpdir2, 'archive')
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            _make_tarball(base_name, 'dist', compress=None)
        finally:
            os.chdir(old_dir)
        tarball = base_name + '.tar'
        self.assertTrue(os.path.exists(tarball))

        # now for a dry_run
        base_name = os.path.join(tmpdir2, 'archive')
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            _make_tarball(base_name, 'dist', compress=None, dry_run=True)
        finally:
            os.chdir(old_dir)
        tarball = base_name + '.tar'
        self.assertTrue(os.path.exists(tarball))

    @unittest.skipUnless(zlib, "Requires zlib")
    @unittest.skipUnless(ZIP_SUPPORT, 'Need zip support to run')
    def test_make_zipfile(self):
        # creating something to tar
        tmpdir = self.mkdtemp()
        self.write_file([tmpdir, 'file1'], 'xxx')
        self.write_file([tmpdir, 'file2'], 'xxx')

        tmpdir2 = self.mkdtemp()
        # force shutil to create the directory
        os.rmdir(tmpdir2)
        base_name = os.path.join(tmpdir2, 'archive')
        _make_zipfile(base_name, tmpdir)

        # check if the compressed tarball was created
        tarball = base_name + '.zip'
        self.assertTrue(os.path.exists(tarball))


    def test_make_archive(self):
        tmpdir = self.mkdtemp()
        base_name = os.path.join(tmpdir, 'archive')
        self.assertRaises(ValueError, make_archive, base_name, 'xxx')

    @unittest.skipUnless(zlib, "Requires zlib")
    def test_make_archive_owner_group(self):
        # testing make_archive with owner and group, with various combinations
        # this works even if there's not gid/uid support
        if UID_GID_SUPPORT:
            group = grp.getgrgid(0)[0]
            owner = pwd.getpwuid(0)[0]
        else:
            group = owner = 'root'

        base_dir, root_dir, base_name =  self._create_files()
        base_name = os.path.join(self.mkdtemp() , 'archive')
        res = make_archive(base_name, 'zip', root_dir, base_dir, owner=owner,
                           group=group)
        self.assertTrue(os.path.exists(res))

        res = make_archive(base_name, 'zip', root_dir, base_dir)
        self.assertTrue(os.path.exists(res))

        res = make_archive(base_name, 'tar', root_dir, base_dir,
                           owner=owner, group=group)
        self.assertTrue(os.path.exists(res))

        res = make_archive(base_name, 'tar', root_dir, base_dir,
                           owner='kjhkjhkjg', group='oihohoh')
        self.assertTrue(os.path.exists(res))

    @unittest.skipUnless(zlib, "Requires zlib")
    @unittest.skipUnless(UID_GID_SUPPORT, "Requires grp and pwd support")
    def test_tarfile_root_owner(self):
        tmpdir, tmpdir2, base_name =  self._create_files()
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        group = grp.getgrgid(0)[0]
        owner = pwd.getpwuid(0)[0]
        try:
            archive_name = _make_tarball(base_name, 'dist', compress=None,
                                         owner=owner, group=group)
        finally:
            os.chdir(old_dir)

        # check if the compressed tarball was created
        self.assertTrue(os.path.exists(archive_name))

        # now checks the rights
        archive = tarfile.open(archive_name)
        try:
            for member in archive.getmembers():
                self.assertEqual(member.uid, 0)
                self.assertEqual(member.gid, 0)
        finally:
            archive.close()

    def test_make_archive_cwd(self):
        current_dir = os.getcwd()
        def _breaks(*args, **kw):
            raise RuntimeError()

        register_archive_format('xxx', _breaks, [], 'xxx file')
        try:
            try:
                make_archive('xxx', 'xxx', root_dir=self.mkdtemp())
            except Exception:
                pass
            self.assertEqual(os.getcwd(), current_dir)
        finally:
            unregister_archive_format('xxx')

    def test_register_archive_format(self):

        self.assertRaises(TypeError, register_archive_format, 'xxx', 1)
        self.assertRaises(TypeError, register_archive_format, 'xxx', lambda: x,
                          1)
        self.assertRaises(TypeError, register_archive_format, 'xxx', lambda: x,
                          [(1, 2), (1, 2, 3)])

        register_archive_format('xxx', lambda: x, [(1, 2)], 'xxx file')
        formats = [name for name, params in get_archive_formats()]
        self.assertIn('xxx', formats)

        unregister_archive_format('xxx')
        formats = [name for name, params in get_archive_formats()]
        self.assertNotIn('xxx', formats)


class TestMove(unittest.TestCase):

    def setUp(self):
        filename = "foo"
        self.src_dir = tempfile.mkdtemp()
        self.dst_dir = tempfile.mkdtemp()
        self.src_file = os.path.join(self.src_dir, filename)
        self.dst_file = os.path.join(self.dst_dir, filename)
        # Try to create a dir in the current directory, hoping that it is
        # not located on the same filesystem as the system tmp dir.
        try:
            self.dir_other_fs = tempfile.mkdtemp(
                dir=os.path.dirname(__file__))
            self.file_other_fs = os.path.join(self.dir_other_fs,
                filename)
        except OSError:
            self.dir_other_fs = None
        with open(self.src_file, "wb") as f:
            f.write("spam")

    def tearDown(self):
        for d in (self.src_dir, self.dst_dir, self.dir_other_fs):
            try:
                if d:
                    shutil.rmtree(d)
            except:
                pass

    def _check_move_file(self, src, dst, real_dst):
        with open(src, "rb") as f:
            contents = f.read()
        shutil.move(src, dst)
        with open(real_dst, "rb") as f:
            self.assertEqual(contents, f.read())
        self.assertFalse(os.path.exists(src))

    def _check_move_dir(self, src, dst, real_dst):
        contents = sorted(os.listdir(src))
        shutil.move(src, dst)
        self.assertEqual(contents, sorted(os.listdir(real_dst)))
        self.assertFalse(os.path.exists(src))

    def test_move_file(self):
        # Move a file to another location on the same filesystem.
        self._check_move_file(self.src_file, self.dst_file, self.dst_file)

    def test_move_file_to_dir(self):
        # Move a file inside an existing dir on the same filesystem.
        self._check_move_file(self.src_file, self.dst_dir, self.dst_file)

    def test_move_file_other_fs(self):
        # Move a file to an existing dir on another filesystem.
        if not self.dir_other_fs:
            # skip
            return
        self._check_move_file(self.src_file, self.file_other_fs,
            self.file_other_fs)

    def test_move_file_to_dir_other_fs(self):
        # Move a file to another location on another filesystem.
        if not self.dir_other_fs:
            # skip
            return
        self._check_move_file(self.src_file, self.dir_other_fs,
            self.file_other_fs)

    def test_move_dir(self):
        # Move a dir to another location on the same filesystem.
        dst_dir = tempfile.mktemp()
        try:
            self._check_move_dir(self.src_dir, dst_dir, dst_dir)
        finally:
            try:
                shutil.rmtree(dst_dir)
            except:
                pass

    def test_move_dir_other_fs(self):
        # Move a dir to another location on another filesystem.
        if not self.dir_other_fs:
            # skip
            return
        dst_dir = tempfile.mktemp(dir=self.dir_other_fs)
        try:
            self._check_move_dir(self.src_dir, dst_dir, dst_dir)
        finally:
            try:
                shutil.rmtree(dst_dir)
            except:
                pass

    def test_move_dir_to_dir(self):
        # Move a dir inside an existing dir on the same filesystem.
        self._check_move_dir(self.src_dir, self.dst_dir,
            os.path.join(self.dst_dir, os.path.basename(self.src_dir)))

    def test_move_dir_to_dir_other_fs(self):
        # Move a dir inside an existing dir on another filesystem.
        if not self.dir_other_fs:
            # skip
            return
        self._check_move_dir(self.src_dir, self.dir_other_fs,
            os.path.join(self.dir_other_fs, os.path.basename(self.src_dir)))

    def test_existing_file_inside_dest_dir(self):
        # A file with the same name inside the destination dir already exists.
        with open(self.dst_file, "wb"):
            pass
        self.assertRaises(shutil.Error, shutil.move, self.src_file, self.dst_dir)

    def test_dont_move_dir_in_itself(self):
        # Moving a dir inside itself raises an Error.
        dst = os.path.join(self.src_dir, "bar")
        self.assertRaises(shutil.Error, shutil.move, self.src_dir, dst)

    def test_destinsrc_false_negative(self):
        os.mkdir(TESTFN)
        try:
            for src, dst in [('srcdir', 'srcdir/dest')]:
                src = os.path.join(TESTFN, src)
                dst = os.path.join(TESTFN, dst)
                self.assertTrue(shutil._destinsrc(src, dst),
                             msg='_destinsrc() wrongly concluded that '
                             'dst (%s) is not in src (%s)' % (dst, src))
        finally:
            shutil.rmtree(TESTFN, ignore_errors=True)

    def test_destinsrc_false_positive(self):
        os.mkdir(TESTFN)
        try:
            for src, dst in [('srcdir', 'src/dest'), ('srcdir', 'srcdir.new')]:
                src = os.path.join(TESTFN, src)
                dst = os.path.join(TESTFN, dst)
                self.assertFalse(shutil._destinsrc(src, dst),
                            msg='_destinsrc() wrongly concluded that '
                            'dst (%s) is in src (%s)' % (dst, src))
        finally:
            shutil.rmtree(TESTFN, ignore_errors=True)


class TestCopyFile(unittest.TestCase):

    _delete = False

    class Faux(object):
        _entered = False
        _exited_with = None
        _raised = False
        def __init__(self, raise_in_exit=False, suppress_at_exit=True):
            self._raise_in_exit = raise_in_exit
            self._suppress_at_exit = suppress_at_exit
        def read(self, *args):
            return ''
        def __enter__(self):
            self._entered = True
        def __exit__(self, exc_type, exc_val, exc_tb):
            self._exited_with = exc_type, exc_val, exc_tb
            if self._raise_in_exit:
                self._raised = True
                raise IOError("Cannot close")
            return self._suppress_at_exit

    def tearDown(self):
        if self._delete:
            del shutil.open

    def _set_shutil_open(self, func):
        shutil.open = func
        self._delete = True

    def test_w_source_open_fails(self):
        def _open(filename, mode='r'):
            if filename == 'srcfile':
                raise IOError('Cannot open "srcfile"')
            assert 0  # shouldn't reach here.

        self._set_shutil_open(_open)

        self.assertRaises(IOError, shutil.copyfile, 'srcfile', 'destfile')

    def test_w_dest_open_fails(self):

        srcfile = self.Faux()

        def _open(filename, mode='r'):
            if filename == 'srcfile':
                return srcfile
            if filename == 'destfile':
                raise IOError('Cannot open "destfile"')
            assert 0  # shouldn't reach here.

        self._set_shutil_open(_open)

        shutil.copyfile('srcfile', 'destfile')
        self.assertTrue(srcfile._entered)
        self.assertTrue(srcfile._exited_with[0] is IOError)
        self.assertEqual(srcfile._exited_with[1].args,
                         ('Cannot open "destfile"',))

    def test_w_dest_close_fails(self):

        srcfile = self.Faux()
        destfile = self.Faux(True)

        def _open(filename, mode='r'):
            if filename == 'srcfile':
                return srcfile
            if filename == 'destfile':
                return destfile
            assert 0  # shouldn't reach here.

        self._set_shutil_open(_open)

        shutil.copyfile('srcfile', 'destfile')
        self.assertTrue(srcfile._entered)
        self.assertTrue(destfile._entered)
        self.assertTrue(destfile._raised)
        self.assertTrue(srcfile._exited_with[0] is IOError)
        self.assertEqual(srcfile._exited_with[1].args,
                         ('Cannot close',))

    def test_w_source_close_fails(self):

        srcfile = self.Faux(True)
        destfile = self.Faux()

        def _open(filename, mode='r'):
            if filename == 'srcfile':
                return srcfile
            if filename == 'destfile':
                return destfile
            assert 0  # shouldn't reach here.

        self._set_shutil_open(_open)

        self.assertRaises(IOError,
                          shutil.copyfile, 'srcfile', 'destfile')
        self.assertTrue(srcfile._entered)
        self.assertTrue(destfile._entered)
        self.assertFalse(destfile._raised)
        self.assertTrue(srcfile._exited_with[0] is None)
        self.assertTrue(srcfile._raised)

    def test_move_dir_caseinsensitive(self):
        # Renames a folder to the same name
        # but a different case.

        self.src_dir = tempfile.mkdtemp()
        dst_dir = os.path.join(
                os.path.dirname(self.src_dir),
                os.path.basename(self.src_dir).upper())
        self.assertNotEqual(self.src_dir, dst_dir)

        try:
            shutil.move(self.src_dir, dst_dir)
            self.assertTrue(os.path.isdir(dst_dir))
        finally:
            if os.path.exists(dst_dir):
                os.rmdir(dst_dir)



def test_main():
    test_support.run_unittest(TestShutil, TestMove, TestCopyFile)

if __name__ == '__main__':
    test_main()