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  • Committer: Martin Pool
  • Date: 2005-04-26 05:51:17 UTC
  • Revision ID: mbp@sourcefrog.net-20050426055116-e4bede04e549e4f6
- update doc upload scripts

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1
 
# Copyright (C) 2005 by Canonical Ltd
2
 
 
3
 
# This program is free software; you can redistribute it and/or modify
4
 
# it under the terms of the GNU General Public License as published by
5
 
# the Free Software Foundation; either version 2 of the License, or
6
 
# (at your option) any later version.
7
 
 
8
 
# This program is distributed in the hope that it will be useful,
9
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 
# GNU General Public License for more details.
12
 
 
13
 
# You should have received a copy of the GNU General Public License
14
 
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
 
 
17
 
from cStringIO import StringIO
18
 
import os
19
 
 
20
 
from bzrlib.branch import Branch
21
 
from bzrlib.clone import copy_branch
22
 
import bzrlib.errors as errors
23
 
from bzrlib.diff import internal_diff
24
 
from bzrlib.inventory import Inventory, ROOT_ID
25
 
import bzrlib.inventory as inventory
26
 
from bzrlib.osutils import has_symlinks, rename, pathjoin
27
 
from bzrlib.tests import TestCase, TestCaseInTempDir
28
 
 
29
 
 
30
 
class TestInventory(TestCase):
31
 
 
32
 
    def test_is_within(self):
33
 
        from bzrlib.osutils import is_inside_any
34
 
 
35
 
        SRC_FOO_C = pathjoin('src', 'foo.c')
36
 
        for dirs, fn in [(['src', 'doc'], SRC_FOO_C),
37
 
                         (['src'], SRC_FOO_C),
38
 
                         (['src'], 'src'),
39
 
                         ]:
40
 
            self.assert_(is_inside_any(dirs, fn))
41
 
            
42
 
        for dirs, fn in [(['src'], 'srccontrol'),
43
 
                         (['src'], 'srccontrol/foo')]:
44
 
            self.assertFalse(is_inside_any(dirs, fn))
45
 
            
46
 
    def test_ids(self):
47
 
        """Test detection of files within selected directories."""
48
 
        inv = Inventory()
49
 
        
50
 
        for args in [('src', 'directory', 'src-id'), 
51
 
                     ('doc', 'directory', 'doc-id'), 
52
 
                     ('src/hello.c', 'file'),
53
 
                     ('src/bye.c', 'file', 'bye-id'),
54
 
                     ('Makefile', 'file')]:
55
 
            inv.add_path(*args)
56
 
            
57
 
        self.assertEqual(inv.path2id('src'), 'src-id')
58
 
        self.assertEqual(inv.path2id('src/bye.c'), 'bye-id')
59
 
        
60
 
        self.assert_('src-id' in inv)
61
 
 
62
 
 
63
 
    def test_version(self):
64
 
        """Inventory remembers the text's version."""
65
 
        inv = Inventory()
66
 
        ie = inv.add_path('foo.txt', 'file')
67
 
        ## XXX
68
 
 
69
 
 
70
 
class TestInventoryEntry(TestCase):
71
 
 
72
 
    def test_file_kind_character(self):
73
 
        file = inventory.InventoryFile('123', 'hello.c', ROOT_ID)
74
 
        self.assertEqual(file.kind_character(), '')
75
 
 
76
 
    def test_dir_kind_character(self):
77
 
        dir = inventory.InventoryDirectory('123', 'hello.c', ROOT_ID)
78
 
        self.assertEqual(dir.kind_character(), '/')
79
 
 
80
 
    def test_link_kind_character(self):
81
 
        dir = inventory.InventoryLink('123', 'hello.c', ROOT_ID)
82
 
        self.assertEqual(dir.kind_character(), '')
83
 
 
84
 
    def test_dir_detect_changes(self):
85
 
        left = inventory.InventoryDirectory('123', 'hello.c', ROOT_ID)
86
 
        left.text_sha1 = 123
87
 
        left.executable = True
88
 
        left.symlink_target='foo'
89
 
        right = inventory.InventoryDirectory('123', 'hello.c', ROOT_ID)
90
 
        right.text_sha1 = 321
91
 
        right.symlink_target='bar'
92
 
        self.assertEqual((False, False), left.detect_changes(right))
93
 
        self.assertEqual((False, False), right.detect_changes(left))
94
 
 
95
 
    def test_file_detect_changes(self):
96
 
        left = inventory.InventoryFile('123', 'hello.c', ROOT_ID)
97
 
        left.text_sha1 = 123
98
 
        right = inventory.InventoryFile('123', 'hello.c', ROOT_ID)
99
 
        right.text_sha1 = 123
100
 
        self.assertEqual((False, False), left.detect_changes(right))
101
 
        self.assertEqual((False, False), right.detect_changes(left))
102
 
        left.executable = True
103
 
        self.assertEqual((False, True), left.detect_changes(right))
104
 
        self.assertEqual((False, True), right.detect_changes(left))
105
 
        right.text_sha1 = 321
106
 
        self.assertEqual((True, True), left.detect_changes(right))
107
 
        self.assertEqual((True, True), right.detect_changes(left))
108
 
 
109
 
    def test_symlink_detect_changes(self):
110
 
        left = inventory.InventoryLink('123', 'hello.c', ROOT_ID)
111
 
        left.text_sha1 = 123
112
 
        left.executable = True
113
 
        left.symlink_target='foo'
114
 
        right = inventory.InventoryLink('123', 'hello.c', ROOT_ID)
115
 
        right.text_sha1 = 321
116
 
        right.symlink_target='foo'
117
 
        self.assertEqual((False, False), left.detect_changes(right))
118
 
        self.assertEqual((False, False), right.detect_changes(left))
119
 
        left.symlink_target = 'different'
120
 
        self.assertEqual((True, False), left.detect_changes(right))
121
 
        self.assertEqual((True, False), right.detect_changes(left))
122
 
 
123
 
    def test_file_has_text(self):
124
 
        file = inventory.InventoryFile('123', 'hello.c', ROOT_ID)
125
 
        self.failUnless(file.has_text())
126
 
 
127
 
    def test_directory_has_text(self):
128
 
        dir = inventory.InventoryDirectory('123', 'hello.c', ROOT_ID)
129
 
        self.failIf(dir.has_text())
130
 
 
131
 
    def test_link_has_text(self):
132
 
        link = inventory.InventoryLink('123', 'hello.c', ROOT_ID)
133
 
        self.failIf(link.has_text())
134
 
 
135
 
 
136
 
class TestEntryDiffing(TestCaseInTempDir):
137
 
 
138
 
    def setUp(self):
139
 
        super(TestEntryDiffing, self).setUp()
140
 
        self.branch = Branch.initialize(u'.')
141
 
        self.wt = self.branch.working_tree()
142
 
        print >> open('file', 'wb'), 'foo'
143
 
        self.branch.working_tree().add(['file'], ['fileid'])
144
 
        if has_symlinks():
145
 
            os.symlink('target1', 'symlink')
146
 
            self.branch.working_tree().add(['symlink'], ['linkid'])
147
 
        self.wt.commit('message_1', rev_id = '1')
148
 
        print >> open('file', 'wb'), 'bar'
149
 
        if has_symlinks():
150
 
            os.unlink('symlink')
151
 
            os.symlink('target2', 'symlink')
152
 
        self.tree_1 = self.branch.revision_tree('1')
153
 
        self.inv_1 = self.branch.get_inventory('1')
154
 
        self.file_1 = self.inv_1['fileid']
155
 
        self.tree_2 = self.branch.working_tree()
156
 
        self.inv_2 = self.tree_2.read_working_inventory()
157
 
        self.file_2 = self.inv_2['fileid']
158
 
        if has_symlinks():
159
 
            self.link_1 = self.inv_1['linkid']
160
 
            self.link_2 = self.inv_2['linkid']
161
 
 
162
 
    def test_file_diff_deleted(self):
163
 
        output = StringIO()
164
 
        self.file_1.diff(internal_diff, 
165
 
                          "old_label", self.tree_1,
166
 
                          "/dev/null", None, None,
167
 
                          output)
168
 
        self.assertEqual(output.getvalue(), "--- old_label\t\n"
169
 
                                            "+++ /dev/null\t\n"
170
 
                                            "@@ -1,1 +0,0 @@\n"
171
 
                                            "-foo\n"
172
 
                                            "\n")
173
 
 
174
 
    def test_file_diff_added(self):
175
 
        output = StringIO()
176
 
        self.file_1.diff(internal_diff, 
177
 
                          "new_label", self.tree_1,
178
 
                          "/dev/null", None, None,
179
 
                          output, reverse=True)
180
 
        self.assertEqual(output.getvalue(), "--- /dev/null\t\n"
181
 
                                            "+++ new_label\t\n"
182
 
                                            "@@ -0,0 +1,1 @@\n"
183
 
                                            "+foo\n"
184
 
                                            "\n")
185
 
 
186
 
    def test_file_diff_changed(self):
187
 
        output = StringIO()
188
 
        self.file_1.diff(internal_diff, 
189
 
                          "/dev/null", self.tree_1, 
190
 
                          "new_label", self.file_2, self.tree_2,
191
 
                          output)
192
 
        self.assertEqual(output.getvalue(), "--- /dev/null\t\n"
193
 
                                            "+++ new_label\t\n"
194
 
                                            "@@ -1,1 +1,1 @@\n"
195
 
                                            "-foo\n"
196
 
                                            "+bar\n"
197
 
                                            "\n")
198
 
        
199
 
    def test_link_diff_deleted(self):
200
 
        if not has_symlinks():
201
 
            return
202
 
        output = StringIO()
203
 
        self.link_1.diff(internal_diff, 
204
 
                          "old_label", self.tree_1,
205
 
                          "/dev/null", None, None,
206
 
                          output)
207
 
        self.assertEqual(output.getvalue(),
208
 
                         "=== target was 'target1'\n")
209
 
 
210
 
    def test_link_diff_added(self):
211
 
        if not has_symlinks():
212
 
            return
213
 
        output = StringIO()
214
 
        self.link_1.diff(internal_diff, 
215
 
                          "new_label", self.tree_1,
216
 
                          "/dev/null", None, None,
217
 
                          output, reverse=True)
218
 
        self.assertEqual(output.getvalue(),
219
 
                         "=== target is 'target1'\n")
220
 
 
221
 
    def test_link_diff_changed(self):
222
 
        if not has_symlinks():
223
 
            return
224
 
        output = StringIO()
225
 
        self.link_1.diff(internal_diff, 
226
 
                          "/dev/null", self.tree_1, 
227
 
                          "new_label", self.link_2, self.tree_2,
228
 
                          output)
229
 
        self.assertEqual(output.getvalue(),
230
 
                         "=== target changed 'target1' => 'target2'\n")
231
 
 
232
 
 
233
 
class TestSnapshot(TestCaseInTempDir):
234
 
 
235
 
    def setUp(self):
236
 
        # for full testing we'll need a branch
237
 
        # with a subdir to test parent changes.
238
 
        # and a file, link and dir under that.
239
 
        # but right now I only need one attribute
240
 
        # to change, and then test merge patterns
241
 
        # with fake parent entries.
242
 
        super(TestSnapshot, self).setUp()
243
 
        self.branch = Branch.initialize(u'.')
244
 
        self.build_tree(['subdir/', 'subdir/file'], line_endings='binary')
245
 
        self.branch.working_tree().add(['subdir', 'subdir/file'],
246
 
                                       ['dirid', 'fileid'])
247
 
        if has_symlinks():
248
 
            pass
249
 
        self.wt = self.branch.working_tree()
250
 
        self.wt.commit('message_1', rev_id = '1')
251
 
        self.tree_1 = self.branch.revision_tree('1')
252
 
        self.inv_1 = self.branch.get_inventory('1')
253
 
        self.file_1 = self.inv_1['fileid']
254
 
        self.work_tree = self.branch.working_tree()
255
 
        self.file_active = self.work_tree.inventory['fileid']
256
 
 
257
 
    def test_snapshot_new_revision(self):
258
 
        # This tests that a simple commit with no parents makes a new
259
 
        # revision value in the inventory entry
260
 
        self.file_active.snapshot('2', 'subdir/file', {}, self.work_tree, 
261
 
                                  self.branch.weave_store,
262
 
                                  self.branch.get_transaction())
263
 
        # expected outcome - file_1 has a revision id of '2', and we can get
264
 
        # its text of 'file contents' out of the weave.
265
 
        self.assertEqual(self.file_1.revision, '1')
266
 
        self.assertEqual(self.file_active.revision, '2')
267
 
        # this should be a separate test probably, but lets check it once..
268
 
        lines = self.branch.weave_store.get_lines('fileid','2',
269
 
            self.branch.get_transaction())
270
 
        self.assertEqual(lines, ['contents of subdir/file\n'])
271
 
 
272
 
    def test_snapshot_unchanged(self):
273
 
        #This tests that a simple commit does not make a new entry for
274
 
        # an unchanged inventory entry
275
 
        self.file_active.snapshot('2', 'subdir/file', {'1':self.file_1},
276
 
                                  self.work_tree, self.branch.weave_store,
277
 
                                  self.branch.get_transaction())
278
 
        self.assertEqual(self.file_1.revision, '1')
279
 
        self.assertEqual(self.file_active.revision, '1')
280
 
        self.assertRaises(errors.WeaveError,
281
 
                          self.branch.weave_store.get_lines, 'fileid', '2',
282
 
                          self.branch.get_transaction())
283
 
 
284
 
    def test_snapshot_merge_identical_different_revid(self):
285
 
        # This tests that a commit with two identical parents, one of which has
286
 
        # a different revision id, results in a new revision id in the entry.
287
 
        # 1->other, commit a merge of other against 1, results in 2.
288
 
        other_ie = inventory.InventoryFile('fileid', 'newname', self.file_1.parent_id)
289
 
        other_ie = inventory.InventoryFile('fileid', 'file', self.file_1.parent_id)
290
 
        other_ie.revision = '1'
291
 
        other_ie.text_sha1 = self.file_1.text_sha1
292
 
        other_ie.text_size = self.file_1.text_size
293
 
        self.assertEqual(self.file_1, other_ie)
294
 
        other_ie.revision = 'other'
295
 
        self.assertNotEqual(self.file_1, other_ie)
296
 
        self.branch.weave_store.add_identical_text('fileid', '1', 'other', ['1'],
297
 
            self.branch.get_transaction())
298
 
        self.file_active.snapshot('2', 'subdir/file', 
299
 
                                  {'1':self.file_1, 'other':other_ie},
300
 
                                  self.work_tree, self.branch.weave_store,
301
 
                                  self.branch.get_transaction())
302
 
        self.assertEqual(self.file_active.revision, '2')
303
 
 
304
 
    def test_snapshot_changed(self):
305
 
        # This tests that a commit with one different parent results in a new
306
 
        # revision id in the entry.
307
 
        self.file_active.name='newname'
308
 
        rename('subdir/file', 'subdir/newname')
309
 
        self.file_active.snapshot('2', 'subdir/newname', {'1':self.file_1}, 
310
 
                                  self.work_tree, 
311
 
                                  self.branch.weave_store,
312
 
                                  self.branch.get_transaction())
313
 
        # expected outcome - file_1 has a revision id of '2'
314
 
        self.assertEqual(self.file_active.revision, '2')
315
 
 
316
 
 
317
 
class TestPreviousHeads(TestCaseInTempDir):
318
 
 
319
 
    def setUp(self):
320
 
        # we want several inventories, that respectively
321
 
        # give use the following scenarios:
322
 
        # A) fileid not in any inventory (A),
323
 
        # B) fileid present in one inventory (B) and (A,B)
324
 
        # C) fileid present in two inventories, and they
325
 
        #   are not mutual descendents (B, C)
326
 
        # D) fileid present in two inventories and one is
327
 
        #   a descendent of the other. (B, D)
328
 
        super(TestPreviousHeads, self).setUp()
329
 
        self.build_tree(['file'])
330
 
        self.branch = Branch.initialize(u'.')
331
 
        self.wt = self.branch.working_tree()
332
 
        self.wt.commit('new branch', allow_pointless=True, rev_id='A')
333
 
        self.inv_A = self.branch.get_inventory('A')
334
 
        self.branch.working_tree().add(['file'], ['fileid'])
335
 
        self.wt.commit('add file', rev_id='B')
336
 
        self.inv_B = self.branch.get_inventory('B')
337
 
        self.branch.put_controlfile('revision-history', 'A\n')
338
 
        self.assertEqual(self.branch.revision_history(), ['A'])
339
 
        self.wt.commit('another add of file', rev_id='C')
340
 
        self.inv_C = self.branch.get_inventory('C')
341
 
        self.wt.add_pending_merge('B')
342
 
        self.wt.commit('merge in B', rev_id='D')
343
 
        self.inv_D = self.branch.get_inventory('D')
344
 
        self.file_active = self.wt.inventory['fileid']
345
 
        self.weave = self.branch.weave_store.get_weave('fileid',
346
 
            self.branch.get_transaction())
347
 
        
348
 
    def get_previous_heads(self, inventories):
349
 
        return self.file_active.find_previous_heads(inventories, self.weave)
350
 
        
351
 
    def test_fileid_in_no_inventory(self):
352
 
        self.assertEqual({}, self.get_previous_heads([self.inv_A]))
353
 
 
354
 
    def test_fileid_in_one_inventory(self):
355
 
        self.assertEqual({'B':self.inv_B['fileid']},
356
 
                         self.get_previous_heads([self.inv_B]))
357
 
        self.assertEqual({'B':self.inv_B['fileid']},
358
 
                         self.get_previous_heads([self.inv_A, self.inv_B]))
359
 
        self.assertEqual({'B':self.inv_B['fileid']},
360
 
                         self.get_previous_heads([self.inv_B, self.inv_A]))
361
 
 
362
 
    def test_fileid_in_two_inventories_gives_both_entries(self):
363
 
        self.assertEqual({'B':self.inv_B['fileid'],
364
 
                          'C':self.inv_C['fileid']},
365
 
                          self.get_previous_heads([self.inv_B, self.inv_C]))
366
 
        self.assertEqual({'B':self.inv_B['fileid'],
367
 
                          'C':self.inv_C['fileid']},
368
 
                          self.get_previous_heads([self.inv_C, self.inv_B]))
369
 
 
370
 
    def test_fileid_in_two_inventories_already_merged_gives_head(self):
371
 
        self.assertEqual({'D':self.inv_D['fileid']},
372
 
                         self.get_previous_heads([self.inv_B, self.inv_D]))
373
 
        self.assertEqual({'D':self.inv_D['fileid']},
374
 
                         self.get_previous_heads([self.inv_D, self.inv_B]))
375
 
 
376
 
    # TODO: test two inventories with the same file revision 
377
 
 
378
 
 
379
 
class TestExecutable(TestCaseInTempDir):
380
 
 
381
 
    def test_stays_executable(self):
382
 
        basic_inv = """<inventory format="5">
383
 
<file file_id="a-20051208024829-849e76f7968d7a86" name="a" executable="yes" />
384
 
<file file_id="b-20051208024829-849e76f7968d7a86" name="b" />
385
 
</inventory>
386
 
"""
387
 
        os.mkdir('b1')
388
 
        b = Branch.initialize('b1')
389
 
        open('b1/a', 'wb').write('a test\n')
390
 
        open('b1/b', 'wb').write('b test\n')
391
 
        os.chmod('b1/a', 0755)
392
 
        os.chmod('b1/b', 0644)
393
 
        # Manually writing the inventory, to ensure that
394
 
        # the executable="yes" entry is set for 'a' and not for 'b'
395
 
        open('b1/.bzr/inventory', 'wb').write(basic_inv)
396
 
 
397
 
        a_id = "a-20051208024829-849e76f7968d7a86"
398
 
        b_id = "b-20051208024829-849e76f7968d7a86"
399
 
        t = b.working_tree()
400
 
        self.assertEqual(['a', 'b'], [cn for cn,ie in t.inventory.iter_entries()])
401
 
 
402
 
        self.failUnless(t.is_executable(a_id), "'a' lost the execute bit")
403
 
        self.failIf(t.is_executable(b_id), "'b' gained an execute bit")
404
 
 
405
 
        t.commit('adding a,b', rev_id='r1')
406
 
 
407
 
        rev_tree = b.revision_tree('r1')
408
 
        self.failUnless(rev_tree.is_executable(a_id), "'a' lost the execute bit")
409
 
        self.failIf(rev_tree.is_executable(b_id), "'b' gained an execute bit")
410
 
 
411
 
        self.failUnless(rev_tree.inventory[a_id].executable)
412
 
        self.failIf(rev_tree.inventory[b_id].executable)
413
 
 
414
 
        # Make sure the entries are gone
415
 
        os.remove('b1/a')
416
 
        os.remove('b1/b')
417
 
        self.failIf(t.has_id(a_id))
418
 
        self.failIf(t.has_filename('a'))
419
 
        self.failIf(t.has_id(b_id))
420
 
        self.failIf(t.has_filename('b'))
421
 
 
422
 
        # Make sure that revert is able to bring them back,
423
 
        # and sets 'a' back to being executable
424
 
 
425
 
        t.revert(['b1/a', 'b1/b'], rev_tree, backups=False)
426
 
        self.assertEqual(['a', 'b'], [cn for cn,ie in t.inventory.iter_entries()])
427
 
 
428
 
        self.failUnless(t.is_executable(a_id), "'a' lost the execute bit")
429
 
        self.failIf(t.is_executable(b_id), "'b' gained an execute bit")
430
 
 
431
 
        # Now remove them again, and make sure that after a
432
 
        # commit, they are still marked correctly
433
 
        os.remove('b1/a')
434
 
        os.remove('b1/b')
435
 
        t.commit('removed', rev_id='r2')
436
 
 
437
 
        self.assertEqual([], [cn for cn,ie in t.inventory.iter_entries()])
438
 
        self.failIf(t.has_id(a_id))
439
 
        self.failIf(t.has_filename('a'))
440
 
        self.failIf(t.has_id(b_id))
441
 
        self.failIf(t.has_filename('b'))
442
 
 
443
 
        # Now revert back to the previous commit
444
 
        t.revert([], rev_tree, backups=False)
445
 
        # TODO: FIXME: For some reason, after revert, the tree does not 
446
 
        # regenerate its working inventory, so we have to manually delete
447
 
        # the working tree, and create a new one
448
 
        # This seems to happen any time you do a merge operation on the
449
 
        # working tree
450
 
        del t
451
 
        t = b.working_tree()
452
 
 
453
 
        self.assertEqual(['a', 'b'], [cn for cn,ie in t.inventory.iter_entries()])
454
 
 
455
 
        self.failUnless(t.is_executable(a_id), "'a' lost the execute bit")
456
 
        self.failIf(t.is_executable(b_id), "'b' gained an execute bit")
457
 
 
458
 
        # Now make sure that 'bzr branch' also preserves the
459
 
        # executable bit
460
 
        # TODO: Maybe this should be a blackbox test
461
 
        from bzrlib.clone import copy_branch
462
 
        copy_branch(b, 'b2', revision='r1')
463
 
        b2 = Branch.open('b2')
464
 
        self.assertEquals('r1', b2.last_revision())
465
 
        t2 = b2.working_tree()
466
 
 
467
 
        self.assertEqual(['a', 'b'], [cn for cn,ie in t2.inventory.iter_entries()])
468
 
        self.failUnless(t2.is_executable(a_id), "'a' lost the execute bit")
469
 
        self.failIf(t2.is_executable(b_id), "'b' gained an execute bit")
470
 
 
471
 
        # Make sure pull will delete the files
472
 
        t2.pull(b)
473
 
        self.assertEquals('r2', b2.last_revision())
474
 
        # FIXME: Same thing here, t2 needs to be recreated
475
 
        del t2
476
 
        t2 = b2.working_tree()
477
 
        self.assertEqual([], [cn for cn,ie in t2.inventory.iter_entries()])
478
 
 
479
 
        # Now commit the changes on the first branch
480
 
        # so that the second branch can pull the changes
481
 
        # and make sure that the executable bit has been copied
482
 
        t.commit('resurrected', rev_id='r3')
483
 
 
484
 
        t2.pull(b)
485
 
        # FIXME: And here
486
 
        del t2
487
 
        t2 = b2.working_tree()
488
 
        self.assertEquals('r3', b2.last_revision())
489
 
        self.assertEqual(['a', 'b'], [cn for cn,ie in t2.inventory.iter_entries()])
490
 
 
491
 
        self.failUnless(t2.is_executable(a_id), "'a' lost the execute bit")
492
 
        self.failIf(t2.is_executable(b_id), "'b' gained an execute bit")