187
167
conflicts.MissingParent('Created directory', 'b', 'b-id'),
188
168
conflicts.UnversionedParent('Versioned directory', 'b', 'b-id')],
189
169
tree_z.conflicts())
190
merge_inner(tree_a.branch, tree_z.basis_tree(), base_tree,
170
merge_inner(tree_a.branch, tree_z.basis_tree(), base_tree,
191
171
this_tree=tree_a)
192
172
self.assertEqual([
193
173
conflicts.DeletingParent('Not deleting', 'b', 'b-id'),
194
174
conflicts.UnversionedParent('Versioned directory', 'b', 'b-id')],
195
175
tree_a.conflicts())
197
def test_nested_merge(self):
198
tree = self.make_branch_and_tree('tree',
199
format='dirstate-with-subtree')
200
sub_tree = self.make_branch_and_tree('tree/sub-tree',
201
format='dirstate-with-subtree')
202
sub_tree.set_root_id('sub-tree-root')
203
self.build_tree_contents([('tree/sub-tree/file', 'text1')])
205
sub_tree.commit('foo')
206
tree.add_reference(sub_tree)
207
tree.commit('set text to 1')
208
tree2 = tree.bzrdir.sprout('tree2').open_workingtree()
209
# modify the file in the subtree
210
self.build_tree_contents([('tree2/sub-tree/file', 'text2')])
211
# and merge the changes from the diverged subtree into the containing
213
tree2.commit('changed file text')
214
tree.merge_from_branch(tree2.branch)
215
self.assertFileEqual('text2', 'tree/sub-tree/file')
217
def test_merge_with_missing(self):
218
tree_a = self.make_branch_and_tree('tree_a')
219
self.build_tree_contents([('tree_a/file', 'content_1')])
221
tree_a.commit('commit base')
222
# basis_tree() is only guaranteed to be valid as long as it is actually
223
# the basis tree. This test commits to the tree after grabbing basis,
224
# so we go to the repository.
225
base_tree = tree_a.branch.repository.revision_tree(tree_a.last_revision())
226
tree_b = tree_a.bzrdir.sprout('tree_b').open_workingtree()
227
self.build_tree_contents([('tree_a/file', 'content_2')])
228
tree_a.commit('commit other')
229
other_tree = tree_a.basis_tree()
230
# 'file' is now missing but isn't altered in any commit in b so no
231
# change should be applied.
232
os.unlink('tree_b/file')
233
merge_inner(tree_b.branch, other_tree, base_tree, this_tree=tree_b)
235
def test_merge_kind_change(self):
236
tree_a = self.make_branch_and_tree('tree_a')
237
self.build_tree_contents([('tree_a/file', 'content_1')])
238
tree_a.add('file', 'file-id')
239
tree_a.commit('added file')
240
tree_b = tree_a.bzrdir.sprout('tree_b').open_workingtree()
241
os.unlink('tree_a/file')
242
self.build_tree(['tree_a/file/'])
243
tree_a.commit('changed file to directory')
244
tree_b.merge_from_branch(tree_a.branch)
245
self.assertEqual('directory', file_kind('tree_b/file'))
247
self.assertEqual('file', file_kind('tree_b/file'))
248
self.build_tree_contents([('tree_b/file', 'content_2')])
249
tree_b.commit('content change')
250
tree_b.merge_from_branch(tree_a.branch)
251
self.assertEqual(tree_b.conflicts(),
252
[conflicts.ContentsConflict('file',
255
def test_merge_type_registry(self):
256
merge_type_option = option.Option.OPTIONS['merge-type']
257
self.assertFalse('merge4' in [x[0] for x in
258
merge_type_option.iter_switches()])
259
registry = _mod_merge.get_merge_type_registry()
260
registry.register_lazy('merge4', 'bzrlib.merge', 'Merge4Merger',
261
'time-travelling merge')
262
self.assertTrue('merge4' in [x[0] for x in
263
merge_type_option.iter_switches()])
264
registry.remove('merge4')
265
self.assertFalse('merge4' in [x[0] for x in
266
merge_type_option.iter_switches()])
268
def test_merge_other_moves_we_deleted(self):
269
tree_a = self.make_branch_and_tree('A')
271
self.addCleanup(tree_a.unlock)
272
self.build_tree(['A/a'])
274
tree_a.commit('1', rev_id='rev-1')
276
tree_a.rename_one('a', 'b')
278
bzrdir_b = tree_a.bzrdir.sprout('B', revision_id='rev-1')
279
tree_b = bzrdir_b.open_workingtree()
281
self.addCleanup(tree_b.unlock)
285
tree_b.merge_from_branch(tree_a.branch)
286
except AttributeError:
287
self.fail('tried to join a path when name was None')
289
def test_merge_uncommitted_otherbasis_ancestor_of_thisbasis(self):
290
tree_a = self.make_branch_and_tree('a')
291
self.build_tree(['a/file_1', 'a/file_2'])
292
tree_a.add(['file_1'])
293
tree_a.commit('commit 1')
294
tree_a.add(['file_2'])
295
tree_a.commit('commit 2')
296
tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
297
tree_b.rename_one('file_1', 'renamed')
298
merger = _mod_merge.Merger.from_uncommitted(tree_a, tree_b)
299
merger.merge_type = _mod_merge.Merge3Merger
301
self.assertEqual(tree_a.get_parent_ids(), [tree_b.last_revision()])
303
def test_merge_uncommitted_otherbasis_ancestor_of_thisbasis_weave(self):
304
tree_a = self.make_branch_and_tree('a')
305
self.build_tree(['a/file_1', 'a/file_2'])
306
tree_a.add(['file_1'])
307
tree_a.commit('commit 1')
308
tree_a.add(['file_2'])
309
tree_a.commit('commit 2')
310
tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
311
tree_b.rename_one('file_1', 'renamed')
312
merger = _mod_merge.Merger.from_uncommitted(tree_a, tree_b)
313
merger.merge_type = _mod_merge.WeaveMerger
315
self.assertEqual(tree_a.get_parent_ids(), [tree_b.last_revision()])
317
def prepare_cherrypick(self):
318
"""Prepare a pair of trees for cherrypicking tests.
320
Both trees have a file, 'file'.
321
rev1 sets content to 'a'.
324
A full merge of rev2b and rev3b into this_tree would add both 'b' and
325
'c'. A successful cherrypick of rev2b-rev3b into this_tree will add
328
this_tree = self.make_branch_and_tree('this')
329
self.build_tree_contents([('this/file', "a\n")])
330
this_tree.add('file')
331
this_tree.commit('rev1')
332
other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
333
self.build_tree_contents([('other/file', "a\nb\n")])
334
other_tree.commit('rev2b', rev_id='rev2b')
335
self.build_tree_contents([('other/file', "c\na\nb\n")])
336
other_tree.commit('rev3b', rev_id='rev3b')
337
this_tree.lock_write()
338
self.addCleanup(this_tree.unlock)
339
return this_tree, other_tree
341
def test_weave_cherrypick(self):
342
this_tree, other_tree = self.prepare_cherrypick()
343
merger = _mod_merge.Merger.from_revision_ids(None,
344
this_tree, 'rev3b', 'rev2b', other_tree.branch)
345
merger.merge_type = _mod_merge.WeaveMerger
347
self.assertFileEqual('c\na\n', 'this/file')
349
def test_weave_cannot_reverse_cherrypick(self):
350
this_tree, other_tree = self.prepare_cherrypick()
351
merger = _mod_merge.Merger.from_revision_ids(None,
352
this_tree, 'rev2b', 'rev3b', other_tree.branch)
353
merger.merge_type = _mod_merge.WeaveMerger
354
self.assertRaises(errors.CannotReverseCherrypick, merger.do_merge)
356
def test_merge3_can_reverse_cherrypick(self):
357
this_tree, other_tree = self.prepare_cherrypick()
358
merger = _mod_merge.Merger.from_revision_ids(None,
359
this_tree, 'rev2b', 'rev3b', other_tree.branch)
360
merger.merge_type = _mod_merge.Merge3Merger
363
def test_merge3_will_detect_cherrypick(self):
364
this_tree = self.make_branch_and_tree('this')
365
self.build_tree_contents([('this/file', "a\n")])
366
this_tree.add('file')
367
this_tree.commit('rev1')
368
other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
369
self.build_tree_contents([('other/file', "a\nb\n")])
370
other_tree.commit('rev2b', rev_id='rev2b')
371
self.build_tree_contents([('other/file', "a\nb\nc\n")])
372
other_tree.commit('rev3b', rev_id='rev3b')
373
this_tree.lock_write()
374
self.addCleanup(this_tree.unlock)
376
merger = _mod_merge.Merger.from_revision_ids(None,
377
this_tree, 'rev3b', 'rev2b', other_tree.branch)
378
merger.merge_type = _mod_merge.Merge3Merger
380
self.assertFileEqual('a\n'
384
'>>>>>>> MERGE-SOURCE\n',
387
def test_make_merger(self):
388
this_tree = self.make_branch_and_tree('this')
389
this_tree.commit('rev1', rev_id='rev1')
390
other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
391
this_tree.commit('rev2', rev_id='rev2a')
392
other_tree.commit('rev2', rev_id='rev2b')
393
this_tree.lock_write()
394
self.addCleanup(this_tree.unlock)
395
merger = _mod_merge.Merger.from_revision_ids(None,
396
this_tree, 'rev2b', other_branch=other_tree.branch)
397
merger.merge_type = _mod_merge.Merge3Merger
398
tree_merger = merger.make_merger()
399
self.assertIs(_mod_merge.Merge3Merger, tree_merger.__class__)
400
self.assertEqual('rev2b', tree_merger.other_tree.get_revision_id())
401
self.assertEqual('rev1', tree_merger.base_tree.get_revision_id())
403
def test_make_preview_transform(self):
404
this_tree = self.make_branch_and_tree('this')
405
self.build_tree_contents([('this/file', '1\n')])
406
this_tree.add('file', 'file-id')
407
this_tree.commit('rev1', rev_id='rev1')
408
other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
409
self.build_tree_contents([('this/file', '1\n2a\n')])
410
this_tree.commit('rev2', rev_id='rev2a')
411
self.build_tree_contents([('other/file', '2b\n1\n')])
412
other_tree.commit('rev2', rev_id='rev2b')
413
this_tree.lock_write()
414
self.addCleanup(this_tree.unlock)
415
merger = _mod_merge.Merger.from_revision_ids(None,
416
this_tree, 'rev2b', other_branch=other_tree.branch)
417
merger.merge_type = _mod_merge.Merge3Merger
418
tree_merger = merger.make_merger()
419
tt = tree_merger.make_preview_transform()
420
self.addCleanup(tt.finalize)
421
preview_tree = tt.get_preview_tree()
422
tree_file = this_tree.get_file('file-id')
424
self.assertEqual('1\n2a\n', tree_file.read())
427
preview_file = preview_tree.get_file('file-id')
429
self.assertEqual('2b\n1\n2a\n', preview_file.read())
433
def test_do_merge(self):
434
this_tree = self.make_branch_and_tree('this')
435
self.build_tree_contents([('this/file', '1\n')])
436
this_tree.add('file', 'file-id')
437
this_tree.commit('rev1', rev_id='rev1')
438
other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
439
self.build_tree_contents([('this/file', '1\n2a\n')])
440
this_tree.commit('rev2', rev_id='rev2a')
441
self.build_tree_contents([('other/file', '2b\n1\n')])
442
other_tree.commit('rev2', rev_id='rev2b')
443
this_tree.lock_write()
444
self.addCleanup(this_tree.unlock)
445
merger = _mod_merge.Merger.from_revision_ids(None,
446
this_tree, 'rev2b', other_branch=other_tree.branch)
447
merger.merge_type = _mod_merge.Merge3Merger
448
tree_merger = merger.make_merger()
449
tt = tree_merger.do_merge()
450
tree_file = this_tree.get_file('file-id')
452
self.assertEqual('2b\n1\n2a\n', tree_file.read())
456
def test_merge_add_into_deleted_root(self):
457
# Yes, people actually do this. And report bugs if it breaks.
458
source = self.make_branch_and_tree('source', format='rich-root-pack')
459
self.build_tree(['source/foo/'])
460
source.add('foo', 'foo-id')
461
source.commit('Add foo')
462
target = source.bzrdir.sprout('target').open_workingtree()
463
subtree = target.extract('foo-id')
464
subtree.commit('Delete root')
465
self.build_tree(['source/bar'])
466
source.add('bar', 'bar-id')
467
source.commit('Add bar')
468
subtree.merge_from_branch(source.branch)
470
def test_merge_joined_branch(self):
471
source = self.make_branch_and_tree('source', format='rich-root-pack')
472
self.build_tree(['source/foo'])
474
source.commit('Add foo')
475
target = self.make_branch_and_tree('target', format='rich-root-pack')
476
self.build_tree(['target/bla'])
478
target.commit('Add bla')
479
nested = source.bzrdir.sprout('target/subtree').open_workingtree()
480
target.subsume(nested)
481
target.commit('Join nested')
482
self.build_tree(['source/bar'])
484
source.commit('Add bar')
485
target.merge_from_branch(source.branch)
486
target.commit('Merge source')
489
class TestPlanMerge(TestCaseWithMemoryTransport):
492
TestCaseWithMemoryTransport.setUp(self)
493
mapper = versionedfile.PrefixMapper()
494
factory = knit.make_file_factory(True, mapper)
495
self.vf = factory(self.get_transport())
496
self.plan_merge_vf = versionedfile._PlanMergeVersionedFile('root')
497
self.plan_merge_vf.fallback_versionedfiles.append(self.vf)
499
def add_version(self, key, parents, text):
500
self.vf.add_lines(key, parents, [c+'\n' for c in text])
502
def add_rev(self, prefix, revision_id, parents, text):
503
self.add_version((prefix, revision_id), [(prefix, p) for p in parents],
506
def add_uncommitted_version(self, key, parents, text):
507
self.plan_merge_vf.add_lines(key, parents,
508
[c+'\n' for c in text])
510
def setup_plan_merge(self):
511
self.add_rev('root', 'A', [], 'abc')
512
self.add_rev('root', 'B', ['A'], 'acehg')
513
self.add_rev('root', 'C', ['A'], 'fabg')
514
return _PlanMerge('B', 'C', self.plan_merge_vf, ('root',))
516
def setup_plan_merge_uncommitted(self):
517
self.add_version(('root', 'A'), [], 'abc')
518
self.add_uncommitted_version(('root', 'B:'), [('root', 'A')], 'acehg')
519
self.add_uncommitted_version(('root', 'C:'), [('root', 'A')], 'fabg')
520
return _PlanMerge('B:', 'C:', self.plan_merge_vf, ('root',))
522
def test_base_from_plan(self):
523
self.setup_plan_merge()
524
plan = self.plan_merge_vf.plan_merge('B', 'C')
525
pwm = versionedfile.PlanWeaveMerge(plan)
526
self.assertEqual(['a\n', 'b\n', 'c\n'], pwm.base_from_plan())
528
def test_unique_lines(self):
529
plan = self.setup_plan_merge()
530
self.assertEqual(plan._unique_lines(
531
plan._get_matching_blocks('B', 'C')),
534
def test_plan_merge(self):
535
self.setup_plan_merge()
536
plan = self.plan_merge_vf.plan_merge('B', 'C')
539
('unchanged', 'a\n'),
548
def test_plan_merge_cherrypick(self):
549
self.add_rev('root', 'A', [], 'abc')
550
self.add_rev('root', 'B', ['A'], 'abcde')
551
self.add_rev('root', 'C', ['A'], 'abcefg')
552
self.add_rev('root', 'D', ['A', 'B', 'C'], 'abcdegh')
553
my_plan = _PlanMerge('B', 'D', self.plan_merge_vf, ('root',))
554
# We shortcut when one text supersedes the other in the per-file graph.
555
# We don't actually need to compare the texts at this point.
564
list(my_plan.plan_merge()))
566
def test_plan_merge_no_common_ancestor(self):
567
self.add_rev('root', 'A', [], 'abc')
568
self.add_rev('root', 'B', [], 'xyz')
569
my_plan = _PlanMerge('A', 'B', self.plan_merge_vf, ('root',))
577
list(my_plan.plan_merge()))
579
def test_plan_merge_tail_ancestors(self):
580
# The graph looks like this:
581
# A # Common to all ancestors
583
# B C # Ancestors of E, only common to one side
585
# D E F # D, F are unique to G, H respectively
586
# |/ \| # E is the LCA for G & H, and the unique LCA for
591
# I J # criss-cross merge of G, H
593
# In this situation, a simple pruning of ancestors of E will leave D &
594
# F "dangling", which looks like they introduce lines different from
595
# the ones in E, but in actuality C&B introduced the lines, and they
596
# are already present in E
598
# Introduce the base text
599
self.add_rev('root', 'A', [], 'abc')
600
# Introduces a new line B
601
self.add_rev('root', 'B', ['A'], 'aBbc')
602
# Introduces a new line C
603
self.add_rev('root', 'C', ['A'], 'abCc')
604
# Introduce new line D
605
self.add_rev('root', 'D', ['B'], 'DaBbc')
606
# Merges B and C by just incorporating both
607
self.add_rev('root', 'E', ['B', 'C'], 'aBbCc')
608
# Introduce new line F
609
self.add_rev('root', 'F', ['C'], 'abCcF')
610
# Merge D & E by just combining the texts
611
self.add_rev('root', 'G', ['D', 'E'], 'DaBbCc')
612
# Merge F & E by just combining the texts
613
self.add_rev('root', 'H', ['F', 'E'], 'aBbCcF')
614
# Merge G & H by just combining texts
615
self.add_rev('root', 'I', ['G', 'H'], 'DaBbCcF')
616
# Merge G & H but supersede an old line in B
617
self.add_rev('root', 'J', ['H', 'G'], 'DaJbCcF')
618
plan = self.plan_merge_vf.plan_merge('I', 'J')
620
('unchanged', 'D\n'),
621
('unchanged', 'a\n'),
624
('unchanged', 'b\n'),
625
('unchanged', 'C\n'),
626
('unchanged', 'c\n'),
627
('unchanged', 'F\n')],
630
def test_plan_merge_tail_triple_ancestors(self):
631
# The graph looks like this:
632
# A # Common to all ancestors
634
# B C # Ancestors of E, only common to one side
636
# D E F # D, F are unique to G, H respectively
637
# |/|\| # E is the LCA for G & H, and the unique LCA for
639
# |\ /| # Q is just an extra node which is merged into both
642
# I J # criss-cross merge of G, H
644
# This is the same as the test_plan_merge_tail_ancestors, except we add
645
# a third LCA that doesn't add new lines, but will trigger our more
646
# involved ancestry logic
648
self.add_rev('root', 'A', [], 'abc')
649
self.add_rev('root', 'B', ['A'], 'aBbc')
650
self.add_rev('root', 'C', ['A'], 'abCc')
651
self.add_rev('root', 'D', ['B'], 'DaBbc')
652
self.add_rev('root', 'E', ['B', 'C'], 'aBbCc')
653
self.add_rev('root', 'F', ['C'], 'abCcF')
654
self.add_rev('root', 'G', ['D', 'E'], 'DaBbCc')
655
self.add_rev('root', 'H', ['F', 'E'], 'aBbCcF')
656
self.add_rev('root', 'Q', ['E'], 'aBbCc')
657
self.add_rev('root', 'I', ['G', 'Q', 'H'], 'DaBbCcF')
658
# Merge G & H but supersede an old line in B
659
self.add_rev('root', 'J', ['H', 'Q', 'G'], 'DaJbCcF')
660
plan = self.plan_merge_vf.plan_merge('I', 'J')
662
('unchanged', 'D\n'),
663
('unchanged', 'a\n'),
666
('unchanged', 'b\n'),
667
('unchanged', 'C\n'),
668
('unchanged', 'c\n'),
669
('unchanged', 'F\n')],
672
def test_plan_merge_2_tail_triple_ancestors(self):
673
# The graph looks like this:
674
# A B # 2 tails going back to NULL
676
# D E F # D, is unique to G, F to H
677
# |/|\| # E is the LCA for G & H, and the unique LCA for
679
# |\ /| # Q is just an extra node which is merged into both
682
# I J # criss-cross merge of G, H (and Q)
685
# This is meant to test after hitting a 3-way LCA, and multiple tail
686
# ancestors (only have NULL_REVISION in common)
688
self.add_rev('root', 'A', [], 'abc')
689
self.add_rev('root', 'B', [], 'def')
690
self.add_rev('root', 'D', ['A'], 'Dabc')
691
self.add_rev('root', 'E', ['A', 'B'], 'abcdef')
692
self.add_rev('root', 'F', ['B'], 'defF')
693
self.add_rev('root', 'G', ['D', 'E'], 'Dabcdef')
694
self.add_rev('root', 'H', ['F', 'E'], 'abcdefF')
695
self.add_rev('root', 'Q', ['E'], 'abcdef')
696
self.add_rev('root', 'I', ['G', 'Q', 'H'], 'DabcdefF')
697
# Merge G & H but supersede an old line in B
698
self.add_rev('root', 'J', ['H', 'Q', 'G'], 'DabcdJfF')
699
plan = self.plan_merge_vf.plan_merge('I', 'J')
701
('unchanged', 'D\n'),
702
('unchanged', 'a\n'),
703
('unchanged', 'b\n'),
704
('unchanged', 'c\n'),
705
('unchanged', 'd\n'),
708
('unchanged', 'f\n'),
709
('unchanged', 'F\n')],
712
def test_plan_merge_uncommitted_files(self):
713
self.setup_plan_merge_uncommitted()
714
plan = self.plan_merge_vf.plan_merge('B:', 'C:')
717
('unchanged', 'a\n'),
726
def test_plan_merge_insert_order(self):
727
"""Weave merges are sensitive to the order of insertion.
729
Specifically for overlapping regions, it effects which region gets put
730
'first'. And when a user resolves an overlapping merge, if they use the
731
same ordering, then the lines match the parents, if they don't only
732
*some* of the lines match.
734
self.add_rev('root', 'A', [], 'abcdef')
735
self.add_rev('root', 'B', ['A'], 'abwxcdef')
736
self.add_rev('root', 'C', ['A'], 'abyzcdef')
737
# Merge, and resolve the conflict by adding *both* sets of lines
738
# If we get the ordering wrong, these will look like new lines in D,
739
# rather than carried over from B, C
740
self.add_rev('root', 'D', ['B', 'C'],
742
# Supersede the lines in B and delete the lines in C, which will
743
# conflict if they are treated as being in D
744
self.add_rev('root', 'E', ['C', 'B'],
746
# Same thing for the lines in C
747
self.add_rev('root', 'F', ['C'], 'abpqcdef')
748
plan = self.plan_merge_vf.plan_merge('D', 'E')
750
('unchanged', 'a\n'),
751
('unchanged', 'b\n'),
758
('unchanged', 'c\n'),
759
('unchanged', 'd\n'),
760
('unchanged', 'e\n'),
761
('unchanged', 'f\n')],
763
plan = self.plan_merge_vf.plan_merge('E', 'D')
764
# Going in the opposite direction shows the effect of the opposite plan
766
('unchanged', 'a\n'),
767
('unchanged', 'b\n'),
772
('killed-both', 'w\n'),
773
('killed-both', 'x\n'),
776
('unchanged', 'c\n'),
777
('unchanged', 'd\n'),
778
('unchanged', 'e\n'),
779
('unchanged', 'f\n')],
782
def test_plan_merge_criss_cross(self):
783
# This is specificly trying to trigger problems when using limited
784
# ancestry and weaves. The ancestry graph looks like:
785
# XX unused ancestor, should not show up in the weave
789
# B \ Introduces a line 'foo'
791
# C D E C & D both have 'foo', E has different changes
795
# F G All of C, D, E are merged into F and G, so they are
796
# all common ancestors.
798
# The specific issue with weaves:
799
# B introduced a text ('foo') that is present in both C and D.
800
# If we do not include B (because it isn't an ancestor of E), then
801
# the A=>C and A=>D look like both sides independently introduce the
802
# text ('foo'). If F does not modify the text, it would still appear
803
# to have deleted on of the versions from C or D. If G then modifies
804
# 'foo', it should appear as superseding the value in F (since it
805
# came from B), rather than conflict because of the resolution during
807
self.add_rev('root', 'XX', [], 'qrs')
808
self.add_rev('root', 'A', ['XX'], 'abcdef')
809
self.add_rev('root', 'B', ['A'], 'axcdef')
810
self.add_rev('root', 'C', ['B'], 'axcdefg')
811
self.add_rev('root', 'D', ['B'], 'haxcdef')
812
self.add_rev('root', 'E', ['A'], 'abcdyf')
813
# Simple combining of all texts
814
self.add_rev('root', 'F', ['C', 'D', 'E'], 'haxcdyfg')
815
# combine and supersede 'x'
816
self.add_rev('root', 'G', ['C', 'D', 'E'], 'hazcdyfg')
817
plan = self.plan_merge_vf.plan_merge('F', 'G')
819
('unchanged', 'h\n'),
820
('unchanged', 'a\n'),
821
('killed-base', 'b\n'),
824
('unchanged', 'c\n'),
825
('unchanged', 'd\n'),
826
('killed-base', 'e\n'),
827
('unchanged', 'y\n'),
828
('unchanged', 'f\n'),
829
('unchanged', 'g\n')],
831
plan = self.plan_merge_vf.plan_lca_merge('F', 'G')
832
# This is one of the main differences between plan_merge and
833
# plan_lca_merge. plan_lca_merge generates a conflict for 'x => z',
834
# because 'x' was not present in one of the bases. However, in this
835
# case it is spurious because 'x' does not exist in the global base A.
837
('unchanged', 'h\n'),
838
('unchanged', 'a\n'),
839
('conflicted-a', 'x\n'),
841
('unchanged', 'c\n'),
842
('unchanged', 'd\n'),
843
('unchanged', 'y\n'),
844
('unchanged', 'f\n'),
845
('unchanged', 'g\n')],
848
def test_criss_cross_flip_flop(self):
849
# This is specificly trying to trigger problems when using limited
850
# ancestry and weaves. The ancestry graph looks like:
851
# XX unused ancestor, should not show up in the weave
855
# B C B & C both introduce a new line
859
# D E B & C are both merged, so both are common ancestors
860
# In the process of merging, both sides order the new
863
self.add_rev('root', 'XX', [], 'qrs')
864
self.add_rev('root', 'A', ['XX'], 'abcdef')
865
self.add_rev('root', 'B', ['A'], 'abcdgef')
866
self.add_rev('root', 'C', ['A'], 'abcdhef')
867
self.add_rev('root', 'D', ['B', 'C'], 'abcdghef')
868
self.add_rev('root', 'E', ['C', 'B'], 'abcdhgef')
869
plan = list(self.plan_merge_vf.plan_merge('D', 'E'))
871
('unchanged', 'a\n'),
872
('unchanged', 'b\n'),
873
('unchanged', 'c\n'),
874
('unchanged', 'd\n'),
876
('unchanged', 'g\n'),
878
('unchanged', 'e\n'),
879
('unchanged', 'f\n'),
881
pwm = versionedfile.PlanWeaveMerge(plan)
882
self.assertEqualDiff('\n'.join('abcdghef') + '\n',
883
''.join(pwm.base_from_plan()))
884
# Reversing the order reverses the merge plan, and final order of 'hg'
886
plan = list(self.plan_merge_vf.plan_merge('E', 'D'))
888
('unchanged', 'a\n'),
889
('unchanged', 'b\n'),
890
('unchanged', 'c\n'),
891
('unchanged', 'd\n'),
893
('unchanged', 'h\n'),
895
('unchanged', 'e\n'),
896
('unchanged', 'f\n'),
898
pwm = versionedfile.PlanWeaveMerge(plan)
899
self.assertEqualDiff('\n'.join('abcdhgef') + '\n',
900
''.join(pwm.base_from_plan()))
901
# This is where lca differs, in that it (fairly correctly) determines
902
# that there is a conflict because both sides resolved the merge
904
plan = list(self.plan_merge_vf.plan_lca_merge('D', 'E'))
906
('unchanged', 'a\n'),
907
('unchanged', 'b\n'),
908
('unchanged', 'c\n'),
909
('unchanged', 'd\n'),
910
('conflicted-b', 'h\n'),
911
('unchanged', 'g\n'),
912
('conflicted-a', 'h\n'),
913
('unchanged', 'e\n'),
914
('unchanged', 'f\n'),
916
pwm = versionedfile.PlanWeaveMerge(plan)
917
self.assertEqualDiff('\n'.join('abcdgef') + '\n',
918
''.join(pwm.base_from_plan()))
919
# Reversing it changes what line is doubled, but still gives a
921
plan = list(self.plan_merge_vf.plan_lca_merge('E', 'D'))
923
('unchanged', 'a\n'),
924
('unchanged', 'b\n'),
925
('unchanged', 'c\n'),
926
('unchanged', 'd\n'),
927
('conflicted-b', 'g\n'),
928
('unchanged', 'h\n'),
929
('conflicted-a', 'g\n'),
930
('unchanged', 'e\n'),
931
('unchanged', 'f\n'),
933
pwm = versionedfile.PlanWeaveMerge(plan)
934
self.assertEqualDiff('\n'.join('abcdhef') + '\n',
935
''.join(pwm.base_from_plan()))
937
def assertRemoveExternalReferences(self, filtered_parent_map,
938
child_map, tails, parent_map):
939
"""Assert results for _PlanMerge._remove_external_references."""
940
(act_filtered_parent_map, act_child_map,
941
act_tails) = _PlanMerge._remove_external_references(parent_map)
943
# The parent map *should* preserve ordering, but the ordering of
944
# children is not strictly defined
945
# child_map = dict((k, sorted(children))
946
# for k, children in child_map.iteritems())
947
# act_child_map = dict(k, sorted(children)
948
# for k, children in act_child_map.iteritems())
949
self.assertEqual(filtered_parent_map, act_filtered_parent_map)
950
self.assertEqual(child_map, act_child_map)
951
self.assertEqual(sorted(tails), sorted(act_tails))
953
def test__remove_external_references(self):
954
# First, nothing to remove
955
self.assertRemoveExternalReferences({3: [2], 2: [1], 1: []},
956
{1: [2], 2: [3], 3: []}, [1], {3: [2], 2: [1], 1: []})
957
# The reverse direction
958
self.assertRemoveExternalReferences({1: [2], 2: [3], 3: []},
959
{3: [2], 2: [1], 1: []}, [3], {1: [2], 2: [3], 3: []})
961
self.assertRemoveExternalReferences({3: [2], 2: [1], 1: []},
962
{1: [2], 2: [3], 3: []}, [1], {3: [2, 4], 2: [1, 5], 1: [6]})
964
self.assertRemoveExternalReferences(
965
{4: [2, 3], 3: [], 2: [1], 1: []},
966
{1: [2], 2: [4], 3: [4], 4: []},
968
{4: [2, 3], 3: [5], 2: [1], 1: [6]})
970
self.assertRemoveExternalReferences(
971
{1: [3], 2: [3, 4], 3: [], 4: []},
972
{1: [], 2: [], 3: [1, 2], 4: [2]},
974
{1: [3], 2: [3, 4], 3: [5], 4: []})
976
def assertPruneTails(self, pruned_map, tails, parent_map):
978
for key, parent_keys in parent_map.iteritems():
979
child_map.setdefault(key, [])
980
for pkey in parent_keys:
981
child_map.setdefault(pkey, []).append(key)
982
_PlanMerge._prune_tails(parent_map, child_map, tails)
983
self.assertEqual(pruned_map, parent_map)
985
def test__prune_tails(self):
986
# Nothing requested to prune
987
self.assertPruneTails({1: [], 2: [], 3: []}, [],
988
{1: [], 2: [], 3: []})
989
# Prune a single entry
990
self.assertPruneTails({1: [], 3: []}, [2],
991
{1: [], 2: [], 3: []})
993
self.assertPruneTails({1: []}, [3],
994
{1: [], 2: [3], 3: []})
995
# Prune a chain with a diamond
996
self.assertPruneTails({1: []}, [5],
997
{1: [], 2: [3, 4], 3: [5], 4: [5], 5: []})
998
# Prune a partial chain
999
self.assertPruneTails({1: [6], 6:[]}, [5],
1000
{1: [2, 6], 2: [3, 4], 3: [5], 4: [5], 5: [],
1002
# Prune a chain with multiple tips, that pulls out intermediates
1003
self.assertPruneTails({1:[3], 3:[]}, [4, 5],
1004
{1: [2, 3], 2: [4, 5], 3: [], 4:[], 5:[]})
1005
self.assertPruneTails({1:[3], 3:[]}, [5, 4],
1006
{1: [2, 3], 2: [4, 5], 3: [], 4:[], 5:[]})
1008
def test_subtract_plans(self):
1010
('unchanged', 'a\n'),
1012
('killed-a', 'c\n'),
1015
('killed-b', 'f\n'),
1016
('killed-b', 'g\n'),
1019
('unchanged', 'a\n'),
1021
('killed-a', 'c\n'),
1024
('killed-b', 'f\n'),
1025
('killed-b', 'i\n'),
1028
('unchanged', 'a\n'),
1030
('killed-a', 'c\n'),
1032
('unchanged', 'f\n'),
1033
('killed-b', 'i\n'),
1035
self.assertEqual(subtracted_plan,
1036
list(_PlanMerge._subtract_plans(old_plan, new_plan)))
1038
def setup_merge_with_base(self):
1039
self.add_rev('root', 'COMMON', [], 'abc')
1040
self.add_rev('root', 'THIS', ['COMMON'], 'abcd')
1041
self.add_rev('root', 'BASE', ['COMMON'], 'eabc')
1042
self.add_rev('root', 'OTHER', ['BASE'], 'eafb')
1044
def test_plan_merge_with_base(self):
1045
self.setup_merge_with_base()
1046
plan = self.plan_merge_vf.plan_merge('THIS', 'OTHER', 'BASE')
1047
self.assertEqual([('unchanged', 'a\n'),
1049
('unchanged', 'b\n'),
1050
('killed-b', 'c\n'),
1054
def test_plan_lca_merge(self):
1055
self.setup_plan_merge()
1056
plan = self.plan_merge_vf.plan_lca_merge('B', 'C')
1059
('unchanged', 'a\n'),
1060
('killed-b', 'c\n'),
1063
('killed-a', 'b\n'),
1064
('unchanged', 'g\n')],
1067
def test_plan_lca_merge_uncommitted_files(self):
1068
self.setup_plan_merge_uncommitted()
1069
plan = self.plan_merge_vf.plan_lca_merge('B:', 'C:')
1072
('unchanged', 'a\n'),
1073
('killed-b', 'c\n'),
1076
('killed-a', 'b\n'),
1077
('unchanged', 'g\n')],
1080
def test_plan_lca_merge_with_base(self):
1081
self.setup_merge_with_base()
1082
plan = self.plan_merge_vf.plan_lca_merge('THIS', 'OTHER', 'BASE')
1083
self.assertEqual([('unchanged', 'a\n'),
1085
('unchanged', 'b\n'),
1086
('killed-b', 'c\n'),
1090
def test_plan_lca_merge_with_criss_cross(self):
1091
self.add_version(('root', 'ROOT'), [], 'abc')
1092
# each side makes a change
1093
self.add_version(('root', 'REV1'), [('root', 'ROOT')], 'abcd')
1094
self.add_version(('root', 'REV2'), [('root', 'ROOT')], 'abce')
1095
# both sides merge, discarding others' changes
1096
self.add_version(('root', 'LCA1'),
1097
[('root', 'REV1'), ('root', 'REV2')], 'abcd')
1098
self.add_version(('root', 'LCA2'),
1099
[('root', 'REV1'), ('root', 'REV2')], 'fabce')
1100
plan = self.plan_merge_vf.plan_lca_merge('LCA1', 'LCA2')
1101
self.assertEqual([('new-b', 'f\n'),
1102
('unchanged', 'a\n'),
1103
('unchanged', 'b\n'),
1104
('unchanged', 'c\n'),
1105
('conflicted-a', 'd\n'),
1106
('conflicted-b', 'e\n'),
1109
def test_plan_lca_merge_with_null(self):
1110
self.add_version(('root', 'A'), [], 'ab')
1111
self.add_version(('root', 'B'), [], 'bc')
1112
plan = self.plan_merge_vf.plan_lca_merge('A', 'B')
1113
self.assertEqual([('new-a', 'a\n'),
1114
('unchanged', 'b\n'),
1118
def test_plan_merge_with_delete_and_change(self):
1119
self.add_rev('root', 'C', [], 'a')
1120
self.add_rev('root', 'A', ['C'], 'b')
1121
self.add_rev('root', 'B', ['C'], '')
1122
plan = self.plan_merge_vf.plan_merge('A', 'B')
1123
self.assertEqual([('killed-both', 'a\n'),
1127
def test_plan_merge_with_move_and_change(self):
1128
self.add_rev('root', 'C', [], 'abcd')
1129
self.add_rev('root', 'A', ['C'], 'acbd')
1130
self.add_rev('root', 'B', ['C'], 'aBcd')
1131
plan = self.plan_merge_vf.plan_merge('A', 'B')
1132
self.assertEqual([('unchanged', 'a\n'),
1134
('killed-b', 'b\n'),
1136
('killed-a', 'c\n'),
1137
('unchanged', 'd\n'),
1141
class LoggingMerger(object):
1142
# These seem to be the required attributes
1143
requires_base = False
1144
supports_reprocess = False
1145
supports_show_base = False
1146
supports_cherrypick = False
1147
# We intentionally do not define supports_lca_trees
1149
def __init__(self, *args, **kwargs):
1151
self.kwargs = kwargs
1154
class TestMergerBase(TestCaseWithMemoryTransport):
1155
"""Common functionality for Merger tests that don't write to disk."""
1157
def get_builder(self):
1158
builder = self.make_branch_builder('path')
1159
builder.start_series()
1160
self.addCleanup(builder.finish_series)
1163
def setup_simple_graph(self):
1164
"""Create a simple 3-node graph.
1166
:return: A BranchBuilder
1173
builder = self.get_builder()
1174
builder.build_snapshot('A-id', None,
1175
[('add', ('', None, 'directory', None))])
1176
builder.build_snapshot('C-id', ['A-id'], [])
1177
builder.build_snapshot('B-id', ['A-id'], [])
1180
def setup_criss_cross_graph(self):
1181
"""Create a 5-node graph with a criss-cross.
1183
:return: A BranchBuilder
1190
builder = self.setup_simple_graph()
1191
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1192
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1195
def make_Merger(self, builder, other_revision_id,
1196
interesting_files=None, interesting_ids=None):
1197
"""Make a Merger object from a branch builder"""
1198
mem_tree = memorytree.MemoryTree.create_on_branch(builder.get_branch())
1199
mem_tree.lock_write()
1200
self.addCleanup(mem_tree.unlock)
1201
merger = _mod_merge.Merger.from_revision_ids(None,
1202
mem_tree, other_revision_id)
1203
merger.set_interesting_files(interesting_files)
1204
# It seems there is no matching function for set_interesting_ids
1205
merger.interesting_ids = interesting_ids
1206
merger.merge_type = _mod_merge.Merge3Merger
1210
class TestMergerInMemory(TestMergerBase):
1212
def test_cache_trees_with_revision_ids_None(self):
1213
merger = self.make_Merger(self.setup_simple_graph(), 'C-id')
1214
original_cache = dict(merger._cached_trees)
1215
merger.cache_trees_with_revision_ids([None])
1216
self.assertEqual(original_cache, merger._cached_trees)
1218
def test_cache_trees_with_revision_ids_no_revision_id(self):
1219
merger = self.make_Merger(self.setup_simple_graph(), 'C-id')
1220
original_cache = dict(merger._cached_trees)
1221
tree = self.make_branch_and_memory_tree('tree')
1222
merger.cache_trees_with_revision_ids([tree])
1223
self.assertEqual(original_cache, merger._cached_trees)
1225
def test_cache_trees_with_revision_ids_having_revision_id(self):
1226
merger = self.make_Merger(self.setup_simple_graph(), 'C-id')
1227
original_cache = dict(merger._cached_trees)
1228
tree = merger.this_branch.repository.revision_tree('B-id')
1229
original_cache['B-id'] = tree
1230
merger.cache_trees_with_revision_ids([tree])
1231
self.assertEqual(original_cache, merger._cached_trees)
1233
def test_find_base(self):
1234
merger = self.make_Merger(self.setup_simple_graph(), 'C-id')
1235
self.assertEqual('A-id', merger.base_rev_id)
1236
self.assertFalse(merger._is_criss_cross)
1237
self.assertIs(None, merger._lca_trees)
1239
def test_find_base_criss_cross(self):
1240
builder = self.setup_criss_cross_graph()
1241
merger = self.make_Merger(builder, 'E-id')
1242
self.assertEqual('A-id', merger.base_rev_id)
1243
self.assertTrue(merger._is_criss_cross)
1244
self.assertEqual(['B-id', 'C-id'], [t.get_revision_id()
1245
for t in merger._lca_trees])
1246
# If we swap the order, we should get a different lca order
1247
builder.build_snapshot('F-id', ['E-id'], [])
1248
merger = self.make_Merger(builder, 'D-id')
1249
self.assertEqual(['C-id', 'B-id'], [t.get_revision_id()
1250
for t in merger._lca_trees])
1252
def test_find_base_triple_criss_cross(self):
1255
# B C F # F is merged into both branches
1262
builder = self.setup_criss_cross_graph()
1263
builder.build_snapshot('F-id', ['A-id'], [])
1264
builder.build_snapshot('H-id', ['E-id', 'F-id'], [])
1265
builder.build_snapshot('G-id', ['D-id', 'F-id'], [])
1266
merger = self.make_Merger(builder, 'H-id')
1267
self.assertEqual(['B-id', 'C-id', 'F-id'],
1268
[t.get_revision_id() for t in merger._lca_trees])
1270
def test_no_criss_cross_passed_to_merge_type(self):
1271
class LCATreesMerger(LoggingMerger):
1272
supports_lca_trees = True
1274
merger = self.make_Merger(self.setup_simple_graph(), 'C-id')
1275
merger.merge_type = LCATreesMerger
1276
merge_obj = merger.make_merger()
1277
self.assertIsInstance(merge_obj, LCATreesMerger)
1278
self.assertFalse('lca_trees' in merge_obj.kwargs)
1280
def test_criss_cross_passed_to_merge_type(self):
1281
merger = self.make_Merger(self.setup_criss_cross_graph(), 'E-id')
1282
merger.merge_type = _mod_merge.Merge3Merger
1283
merge_obj = merger.make_merger()
1284
self.assertEqual(['B-id', 'C-id'], [t.get_revision_id()
1285
for t in merger._lca_trees])
1287
def test_criss_cross_not_supported_merge_type(self):
1288
merger = self.make_Merger(self.setup_criss_cross_graph(), 'E-id')
1289
# We explicitly do not define supports_lca_trees
1290
merger.merge_type = LoggingMerger
1291
merge_obj = merger.make_merger()
1292
self.assertIsInstance(merge_obj, LoggingMerger)
1293
self.assertFalse('lca_trees' in merge_obj.kwargs)
1295
def test_criss_cross_unsupported_merge_type(self):
1296
class UnsupportedLCATreesMerger(LoggingMerger):
1297
supports_lca_trees = False
1299
merger = self.make_Merger(self.setup_criss_cross_graph(), 'E-id')
1300
merger.merge_type = UnsupportedLCATreesMerger
1301
merge_obj = merger.make_merger()
1302
self.assertIsInstance(merge_obj, UnsupportedLCATreesMerger)
1303
self.assertFalse('lca_trees' in merge_obj.kwargs)
1306
class TestMergerEntriesLCA(TestMergerBase):
1308
def make_merge_obj(self, builder, other_revision_id,
1309
interesting_files=None, interesting_ids=None):
1310
merger = self.make_Merger(builder, other_revision_id,
1311
interesting_files=interesting_files,
1312
interesting_ids=interesting_ids)
1313
return merger.make_merger()
1315
def test_simple(self):
1316
builder = self.get_builder()
1317
builder.build_snapshot('A-id', None,
1318
[('add', (u'', 'a-root-id', 'directory', None)),
1319
('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1320
builder.build_snapshot('C-id', ['A-id'],
1321
[('modify', ('a-id', 'a\nb\nC\nc\n'))])
1322
builder.build_snapshot('B-id', ['A-id'],
1323
[('modify', ('a-id', 'a\nB\nb\nc\n'))])
1324
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1325
[('modify', ('a-id', 'a\nB\nb\nC\nc\nE\n'))])
1326
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1327
[('modify', ('a-id', 'a\nB\nb\nC\nc\n'))])
1328
merge_obj = self.make_merge_obj(builder, 'E-id')
1330
self.assertEqual(['B-id', 'C-id'], [t.get_revision_id()
1331
for t in merge_obj._lca_trees])
1332
self.assertEqual('A-id', merge_obj.base_tree.get_revision_id())
1333
entries = list(merge_obj._entries_lca())
1335
# (file_id, changed, parents, names, executable)
1336
# BASE, lca1, lca2, OTHER, THIS
1337
root_id = 'a-root-id'
1338
self.assertEqual([('a-id', True,
1339
((root_id, [root_id, root_id]), root_id, root_id),
1340
((u'a', [u'a', u'a']), u'a', u'a'),
1341
((False, [False, False]), False, False)),
1344
def test_not_in_base(self):
1345
# LCAs all have the same last-modified revision for the file, as do
1346
# the tips, but the base has something different
1347
# A base, doesn't have the file
1349
# B C B introduces 'foo', C introduces 'bar'
1351
# D E D and E now both have 'foo' and 'bar'
1353
# F G the files are now in F, G, D and E, but not in A
1356
builder = self.get_builder()
1357
builder.build_snapshot('A-id', None,
1358
[('add', (u'', 'a-root-id', 'directory', None))])
1359
builder.build_snapshot('B-id', ['A-id'],
1360
[('add', (u'foo', 'foo-id', 'file', 'a\nb\nc\n'))])
1361
builder.build_snapshot('C-id', ['A-id'],
1362
[('add', (u'bar', 'bar-id', 'file', 'd\ne\nf\n'))])
1363
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1364
[('add', (u'bar', 'bar-id', 'file', 'd\ne\nf\n'))])
1365
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1366
[('add', (u'foo', 'foo-id', 'file', 'a\nb\nc\n'))])
1367
builder.build_snapshot('G-id', ['E-id', 'D-id'],
1368
[('modify', (u'bar-id', 'd\ne\nf\nG\n'))])
1369
builder.build_snapshot('F-id', ['D-id', 'E-id'], [])
1370
merge_obj = self.make_merge_obj(builder, 'G-id')
1372
self.assertEqual(['D-id', 'E-id'], [t.get_revision_id()
1373
for t in merge_obj._lca_trees])
1374
self.assertEqual('A-id', merge_obj.base_tree.get_revision_id())
1375
entries = list(merge_obj._entries_lca())
1376
root_id = 'a-root-id'
1377
self.assertEqual([('bar-id', True,
1378
((None, [root_id, root_id]), root_id, root_id),
1379
((None, [u'bar', u'bar']), u'bar', u'bar'),
1380
((None, [False, False]), False, False)),
1383
def test_not_in_this(self):
1384
builder = self.get_builder()
1385
builder.build_snapshot('A-id', None,
1386
[('add', (u'', 'a-root-id', 'directory', None)),
1387
('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1388
builder.build_snapshot('B-id', ['A-id'],
1389
[('modify', ('a-id', 'a\nB\nb\nc\n'))])
1390
builder.build_snapshot('C-id', ['A-id'],
1391
[('modify', ('a-id', 'a\nb\nC\nc\n'))])
1392
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1393
[('modify', ('a-id', 'a\nB\nb\nC\nc\nE\n'))])
1394
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1395
[('unversion', 'a-id')])
1396
merge_obj = self.make_merge_obj(builder, 'E-id')
1398
self.assertEqual(['B-id', 'C-id'], [t.get_revision_id()
1399
for t in merge_obj._lca_trees])
1400
self.assertEqual('A-id', merge_obj.base_tree.get_revision_id())
1402
entries = list(merge_obj._entries_lca())
1403
root_id = 'a-root-id'
1404
self.assertEqual([('a-id', True,
1405
((root_id, [root_id, root_id]), root_id, None),
1406
((u'a', [u'a', u'a']), u'a', None),
1407
((False, [False, False]), False, None)),
1410
def test_file_not_in_one_lca(self):
1413
# B C # B no file, C introduces a file
1415
# D E # D and E both have the file, unchanged from C
1416
builder = self.get_builder()
1417
builder.build_snapshot('A-id', None,
1418
[('add', (u'', 'a-root-id', 'directory', None))])
1419
builder.build_snapshot('B-id', ['A-id'], [])
1420
builder.build_snapshot('C-id', ['A-id'],
1421
[('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1422
builder.build_snapshot('E-id', ['C-id', 'B-id'], []) # Inherited from C
1423
builder.build_snapshot('D-id', ['B-id', 'C-id'], # Merged from C
1424
[('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1425
merge_obj = self.make_merge_obj(builder, 'E-id')
1427
self.assertEqual(['B-id', 'C-id'], [t.get_revision_id()
1428
for t in merge_obj._lca_trees])
1429
self.assertEqual('A-id', merge_obj.base_tree.get_revision_id())
1431
entries = list(merge_obj._entries_lca())
1432
self.assertEqual([], entries)
1434
def test_not_in_other(self):
1435
builder = self.get_builder()
1436
builder.build_snapshot('A-id', None,
1437
[('add', (u'', 'a-root-id', 'directory', None)),
1438
('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1439
builder.build_snapshot('B-id', ['A-id'], [])
1440
builder.build_snapshot('C-id', ['A-id'], [])
1441
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1442
[('unversion', 'a-id')])
1443
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1444
merge_obj = self.make_merge_obj(builder, 'E-id')
1446
entries = list(merge_obj._entries_lca())
1447
root_id = 'a-root-id'
1448
self.assertEqual([('a-id', True,
1449
((root_id, [root_id, root_id]), None, root_id),
1450
((u'a', [u'a', u'a']), None, u'a'),
1451
((False, [False, False]), None, False)),
1454
def test_not_in_other_or_lca(self):
1455
# A base, introduces 'foo'
1457
# B C B nothing, C deletes foo
1459
# D E D restores foo (same as B), E leaves it deleted
1461
# A => B, no changes
1462
# A => C, delete foo (C should supersede B)
1463
# C => D, restore foo
1464
# C => E, no changes
1465
# D would then win 'cleanly' and no record would be given
1466
builder = self.get_builder()
1467
builder.build_snapshot('A-id', None,
1468
[('add', (u'', 'a-root-id', 'directory', None)),
1469
('add', (u'foo', 'foo-id', 'file', 'content\n'))])
1470
builder.build_snapshot('B-id', ['A-id'], [])
1471
builder.build_snapshot('C-id', ['A-id'],
1472
[('unversion', 'foo-id')])
1473
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1474
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1475
merge_obj = self.make_merge_obj(builder, 'E-id')
1477
entries = list(merge_obj._entries_lca())
1478
self.assertEqual([], entries)
1480
def test_not_in_other_mod_in_lca1_not_in_lca2(self):
1481
# A base, introduces 'foo'
1483
# B C B changes 'foo', C deletes foo
1485
# D E D restores foo (same as B), E leaves it deleted (as C)
1487
# A => B, modified foo
1488
# A => C, delete foo, C does not supersede B
1489
# B => D, no changes
1490
# C => D, resolve in favor of B
1491
# B => E, resolve in favor of E
1492
# C => E, no changes
1493
# In this case, we have a conflict of how the changes were resolved. E
1494
# picked C and D picked B, so we should issue a conflict
1495
builder = self.get_builder()
1496
builder.build_snapshot('A-id', None,
1497
[('add', (u'', 'a-root-id', 'directory', None)),
1498
('add', (u'foo', 'foo-id', 'file', 'content\n'))])
1499
builder.build_snapshot('B-id', ['A-id'], [
1500
('modify', ('foo-id', 'new-content\n'))])
1501
builder.build_snapshot('C-id', ['A-id'],
1502
[('unversion', 'foo-id')])
1503
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1504
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1505
merge_obj = self.make_merge_obj(builder, 'E-id')
1507
entries = list(merge_obj._entries_lca())
1508
root_id = 'a-root-id'
1509
self.assertEqual([('foo-id', True,
1510
((root_id, [root_id, None]), None, root_id),
1511
((u'foo', [u'foo', None]), None, 'foo'),
1512
((False, [False, None]), None, False)),
1515
def test_only_in_one_lca(self):
1518
# B C B nothing, C add file
1520
# D E D still has nothing, E removes file
1523
# C => D, removed the file
1525
# C => E, removed the file
1526
# Thus D & E have identical changes, and this is a no-op
1529
# A => C, add file, thus C supersedes B
1530
# w/ C=BASE, D=THIS, E=OTHER we have 'happy convergence'
1531
builder = self.get_builder()
1532
builder.build_snapshot('A-id', None,
1533
[('add', (u'', 'a-root-id', 'directory', None))])
1534
builder.build_snapshot('B-id', ['A-id'], [])
1535
builder.build_snapshot('C-id', ['A-id'],
1536
[('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1537
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1538
[('unversion', 'a-id')])
1539
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1540
merge_obj = self.make_merge_obj(builder, 'E-id')
1542
entries = list(merge_obj._entries_lca())
1543
self.assertEqual([], entries)
1545
def test_only_in_other(self):
1546
builder = self.get_builder()
1547
builder.build_snapshot('A-id', None,
1548
[('add', (u'', 'a-root-id', 'directory', None))])
1549
builder.build_snapshot('B-id', ['A-id'], [])
1550
builder.build_snapshot('C-id', ['A-id'], [])
1551
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1552
[('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1553
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1554
merge_obj = self.make_merge_obj(builder, 'E-id')
1556
entries = list(merge_obj._entries_lca())
1557
root_id = 'a-root-id'
1558
self.assertEqual([('a-id', True,
1559
((None, [None, None]), root_id, None),
1560
((None, [None, None]), u'a', None),
1561
((None, [None, None]), False, None)),
1564
def test_one_lca_supersedes(self):
1565
# One LCA supersedes the other LCAs last modified value, but the
1566
# value is not the same as BASE.
1567
# A base, introduces 'foo', last mod A
1569
# B C B modifies 'foo' (mod B), C does nothing (mod A)
1571
# D E D does nothing (mod B), E updates 'foo' (mod E)
1573
# F G F updates 'foo' (mod F). G does nothing (mod E)
1575
# At this point, G should not be considered to modify 'foo', even
1576
# though its LCAs disagree. This is because the modification in E
1577
# completely supersedes the value in D.
1578
builder = self.get_builder()
1579
builder.build_snapshot('A-id', None,
1580
[('add', (u'', 'a-root-id', 'directory', None)),
1581
('add', (u'foo', 'foo-id', 'file', 'A content\n'))])
1582
builder.build_snapshot('C-id', ['A-id'], [])
1583
builder.build_snapshot('B-id', ['A-id'],
1584
[('modify', ('foo-id', 'B content\n'))])
1585
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1586
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1587
[('modify', ('foo-id', 'E content\n'))])
1588
builder.build_snapshot('G-id', ['E-id', 'D-id'], [])
1589
builder.build_snapshot('F-id', ['D-id', 'E-id'],
1590
[('modify', ('foo-id', 'F content\n'))])
1591
merge_obj = self.make_merge_obj(builder, 'G-id')
1593
self.assertEqual([], list(merge_obj._entries_lca()))
1595
def test_one_lca_supersedes_path(self):
1596
# Double-criss-cross merge, the ultimate base value is different from
1600
# B C B value 'bar', C = 'foo'
1602
# D E D = 'bar', E supersedes to 'bing'
1604
# F G F = 'bing', G supersedes to 'barry'
1606
# In this case, we technically should not care about the value 'bar' for
1607
# D, because it was clearly superseded by E's 'bing'. The
1608
# per-file/attribute graph would actually look like:
1617
# Because the other side of the merge never modifies the value, it just
1618
# takes the value from the merge.
1620
# ATM this fails because we will prune 'foo' from the LCAs, but we
1621
# won't prune 'bar'. This is getting far off into edge-case land, so we
1622
# aren't supporting it yet.
1624
builder = self.get_builder()
1625
builder.build_snapshot('A-id', None,
1626
[('add', (u'', 'a-root-id', 'directory', None)),
1627
('add', (u'foo', 'foo-id', 'file', 'A content\n'))])
1628
builder.build_snapshot('C-id', ['A-id'], [])
1629
builder.build_snapshot('B-id', ['A-id'],
1630
[('rename', ('foo', 'bar'))])
1631
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1632
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1633
[('rename', ('foo', 'bing'))]) # override to bing
1634
builder.build_snapshot('G-id', ['E-id', 'D-id'],
1635
[('rename', ('bing', 'barry'))]) # override to barry
1636
builder.build_snapshot('F-id', ['D-id', 'E-id'],
1637
[('rename', ('bar', 'bing'))]) # Merge in E's change
1638
merge_obj = self.make_merge_obj(builder, 'G-id')
1640
self.expectFailure("We don't do an actual heads() check on lca values,"
1641
" or use the per-attribute graph",
1642
self.assertEqual, [], list(merge_obj._entries_lca()))
1644
def test_one_lca_accidentally_pruned(self):
1645
# Another incorrect resolution from the same basic flaw:
1648
# B C B value 'bar', C = 'foo'
1650
# D E D = 'bar', E reverts to 'foo'
1652
# F G F = 'bing', G switches to 'bar'
1654
# 'bar' will not be seen as an interesting change, because 'foo' will
1655
# be pruned from the LCAs, even though it was newly introduced by E
1657
builder = self.get_builder()
1658
builder.build_snapshot('A-id', None,
1659
[('add', (u'', 'a-root-id', 'directory', None)),
1660
('add', (u'foo', 'foo-id', 'file', 'A content\n'))])
1661
builder.build_snapshot('C-id', ['A-id'], [])
1662
builder.build_snapshot('B-id', ['A-id'],
1663
[('rename', ('foo', 'bar'))])
1664
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1665
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1666
builder.build_snapshot('G-id', ['E-id', 'D-id'],
1667
[('rename', ('foo', 'bar'))])
1668
builder.build_snapshot('F-id', ['D-id', 'E-id'],
1669
[('rename', ('bar', 'bing'))]) # should end up conflicting
1670
merge_obj = self.make_merge_obj(builder, 'G-id')
1672
entries = list(merge_obj._entries_lca())
1673
root_id = 'a-root-id'
1674
self.expectFailure("We prune values from BASE even when relevant.",
1677
((root_id, [root_id, root_id]), root_id, root_id),
1678
((u'foo', [u'bar', u'foo']), u'bar', u'bing'),
1679
((False, [False, False]), False, False)),
1682
def test_both_sides_revert(self):
1683
# Both sides of a criss-cross revert the text to the lca
1684
# A base, introduces 'foo'
1686
# B C B modifies 'foo', C modifies 'foo'
1688
# D E D reverts to B, E reverts to C
1689
# This should conflict
1690
builder = self.get_builder()
1691
builder.build_snapshot('A-id', None,
1692
[('add', (u'', 'a-root-id', 'directory', None)),
1693
('add', (u'foo', 'foo-id', 'file', 'A content\n'))])
1694
builder.build_snapshot('B-id', ['A-id'],
1695
[('modify', ('foo-id', 'B content\n'))])
1696
builder.build_snapshot('C-id', ['A-id'],
1697
[('modify', ('foo-id', 'C content\n'))])
1698
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1699
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1700
merge_obj = self.make_merge_obj(builder, 'E-id')
1702
entries = list(merge_obj._entries_lca())
1703
root_id = 'a-root-id'
1704
self.assertEqual([('foo-id', True,
1705
((root_id, [root_id, root_id]), root_id, root_id),
1706
((u'foo', [u'foo', u'foo']), u'foo', u'foo'),
1707
((False, [False, False]), False, False)),
1710
def test_different_lca_resolve_one_side_updates_content(self):
1711
# Both sides converge, but then one side updates the text.
1712
# A base, introduces 'foo'
1714
# B C B modifies 'foo', C modifies 'foo'
1716
# D E D reverts to B, E reverts to C
1718
# F F updates to a new value
1719
# We need to emit an entry for 'foo', because D & E differed on the
1721
builder = self.get_builder()
1722
builder.build_snapshot('A-id', None,
1723
[('add', (u'', 'a-root-id', 'directory', None)),
1724
('add', (u'foo', 'foo-id', 'file', 'A content\n'))])
1725
builder.build_snapshot('B-id', ['A-id'],
1726
[('modify', ('foo-id', 'B content\n'))])
1727
builder.build_snapshot('C-id', ['A-id'],
1728
[('modify', ('foo-id', 'C content\n'))])
1729
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1730
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1731
builder.build_snapshot('F-id', ['D-id'],
1732
[('modify', ('foo-id', 'F content\n'))])
1733
merge_obj = self.make_merge_obj(builder, 'E-id')
1735
entries = list(merge_obj._entries_lca())
1736
root_id = 'a-root-id'
1737
self.assertEqual([('foo-id', True,
1738
((root_id, [root_id, root_id]), root_id, root_id),
1739
((u'foo', [u'foo', u'foo']), u'foo', u'foo'),
1740
((False, [False, False]), False, False)),
1743
def test_same_lca_resolution_one_side_updates_content(self):
1744
# Both sides converge, but then one side updates the text.
1745
# A base, introduces 'foo'
1747
# B C B modifies 'foo', C modifies 'foo'
1749
# D E D and E use C's value
1751
# F F updates to a new value
1752
# I think it is a bug that this conflicts, but we don't have a way to
1753
# detect otherwise. And because of:
1754
# test_different_lca_resolve_one_side_updates_content
1755
# We need to conflict.
1757
builder = self.get_builder()
1758
builder.build_snapshot('A-id', None,
1759
[('add', (u'', 'a-root-id', 'directory', None)),
1760
('add', (u'foo', 'foo-id', 'file', 'A content\n'))])
1761
builder.build_snapshot('B-id', ['A-id'],
1762
[('modify', ('foo-id', 'B content\n'))])
1763
builder.build_snapshot('C-id', ['A-id'],
1764
[('modify', ('foo-id', 'C content\n'))])
1765
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1766
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1767
[('modify', ('foo-id', 'C content\n'))]) # Same as E
1768
builder.build_snapshot('F-id', ['D-id'],
1769
[('modify', ('foo-id', 'F content\n'))])
1770
merge_obj = self.make_merge_obj(builder, 'E-id')
1772
entries = list(merge_obj._entries_lca())
1773
self.expectFailure("We don't detect that LCA resolution was the"
1774
" same on both sides",
1775
self.assertEqual, [], entries)
1777
def test_only_path_changed(self):
1778
builder = self.get_builder()
1779
builder.build_snapshot('A-id', None,
1780
[('add', (u'', 'a-root-id', 'directory', None)),
1781
('add', (u'a', 'a-id', 'file', 'content\n'))])
1782
builder.build_snapshot('B-id', ['A-id'], [])
1783
builder.build_snapshot('C-id', ['A-id'], [])
1784
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1785
[('rename', (u'a', u'b'))])
1786
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1787
merge_obj = self.make_merge_obj(builder, 'E-id')
1788
entries = list(merge_obj._entries_lca())
1789
root_id = 'a-root-id'
1790
# The content was not changed, only the path
1791
self.assertEqual([('a-id', False,
1792
((root_id, [root_id, root_id]), root_id, root_id),
1793
((u'a', [u'a', u'a']), u'b', u'a'),
1794
((False, [False, False]), False, False)),
1797
def test_kind_changed(self):
1798
# Identical content, except 'D' changes a-id into a directory
1799
builder = self.get_builder()
1800
builder.build_snapshot('A-id', None,
1801
[('add', (u'', 'a-root-id', 'directory', None)),
1802
('add', (u'a', 'a-id', 'file', 'content\n'))])
1803
builder.build_snapshot('B-id', ['A-id'], [])
1804
builder.build_snapshot('C-id', ['A-id'], [])
1805
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1806
[('unversion', 'a-id'),
1807
('add', (u'a', 'a-id', 'directory', None))])
1808
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1809
merge_obj = self.make_merge_obj(builder, 'E-id')
1810
entries = list(merge_obj._entries_lca())
1811
root_id = 'a-root-id'
1812
# Only the kind was changed (content)
1813
self.assertEqual([('a-id', True,
1814
((root_id, [root_id, root_id]), root_id, root_id),
1815
((u'a', [u'a', u'a']), u'a', u'a'),
1816
((False, [False, False]), False, False)),
1819
def test_this_changed_kind(self):
1820
# Identical content, but THIS changes a file to a directory
1821
builder = self.get_builder()
1822
builder.build_snapshot('A-id', None,
1823
[('add', (u'', 'a-root-id', 'directory', None)),
1824
('add', (u'a', 'a-id', 'file', 'content\n'))])
1825
builder.build_snapshot('B-id', ['A-id'], [])
1826
builder.build_snapshot('C-id', ['A-id'], [])
1827
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1828
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1829
[('unversion', 'a-id'),
1830
('add', (u'a', 'a-id', 'directory', None))])
1831
merge_obj = self.make_merge_obj(builder, 'E-id')
1832
entries = list(merge_obj._entries_lca())
1833
# Only the kind was changed (content)
1834
self.assertEqual([], entries)
1836
def test_interesting_files(self):
1837
# Two files modified, but we should filter one of them
1838
builder = self.get_builder()
1839
builder.build_snapshot('A-id', None,
1840
[('add', (u'', 'a-root-id', 'directory', None)),
1841
('add', (u'a', 'a-id', 'file', 'content\n')),
1842
('add', (u'b', 'b-id', 'file', 'content\n'))])
1843
builder.build_snapshot('B-id', ['A-id'], [])
1844
builder.build_snapshot('C-id', ['A-id'], [])
1845
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1846
[('modify', ('a-id', 'new-content\n')),
1847
('modify', ('b-id', 'new-content\n'))])
1848
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1849
merge_obj = self.make_merge_obj(builder, 'E-id',
1850
interesting_files=['b'])
1851
entries = list(merge_obj._entries_lca())
1852
root_id = 'a-root-id'
1853
self.assertEqual([('b-id', True,
1854
((root_id, [root_id, root_id]), root_id, root_id),
1855
((u'b', [u'b', u'b']), u'b', u'b'),
1856
((False, [False, False]), False, False)),
1859
def test_interesting_file_in_this(self):
1860
# This renamed the file, but it should still match the entry in other
1861
builder = self.get_builder()
1862
builder.build_snapshot('A-id', None,
1863
[('add', (u'', 'a-root-id', 'directory', None)),
1864
('add', (u'a', 'a-id', 'file', 'content\n')),
1865
('add', (u'b', 'b-id', 'file', 'content\n'))])
1866
builder.build_snapshot('B-id', ['A-id'], [])
1867
builder.build_snapshot('C-id', ['A-id'], [])
1868
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1869
[('modify', ('a-id', 'new-content\n')),
1870
('modify', ('b-id', 'new-content\n'))])
1871
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1872
[('rename', ('b', 'c'))])
1873
merge_obj = self.make_merge_obj(builder, 'E-id',
1874
interesting_files=['c'])
1875
entries = list(merge_obj._entries_lca())
1876
root_id = 'a-root-id'
1877
self.assertEqual([('b-id', True,
1878
((root_id, [root_id, root_id]), root_id, root_id),
1879
((u'b', [u'b', u'b']), u'b', u'c'),
1880
((False, [False, False]), False, False)),
1883
def test_interesting_file_in_base(self):
1884
# This renamed the file, but it should still match the entry in BASE
1885
builder = self.get_builder()
1886
builder.build_snapshot('A-id', None,
1887
[('add', (u'', 'a-root-id', 'directory', None)),
1888
('add', (u'a', 'a-id', 'file', 'content\n')),
1889
('add', (u'c', 'c-id', 'file', 'content\n'))])
1890
builder.build_snapshot('B-id', ['A-id'],
1891
[('rename', ('c', 'b'))])
1892
builder.build_snapshot('C-id', ['A-id'],
1893
[('rename', ('c', 'b'))])
1894
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1895
[('modify', ('a-id', 'new-content\n')),
1896
('modify', ('c-id', 'new-content\n'))])
1897
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1898
merge_obj = self.make_merge_obj(builder, 'E-id',
1899
interesting_files=['c'])
1900
entries = list(merge_obj._entries_lca())
1901
root_id = 'a-root-id'
1902
self.assertEqual([('c-id', True,
1903
((root_id, [root_id, root_id]), root_id, root_id),
1904
((u'c', [u'b', u'b']), u'b', u'b'),
1905
((False, [False, False]), False, False)),
1908
def test_interesting_file_in_lca(self):
1909
# This renamed the file, but it should still match the entry in LCA
1910
builder = self.get_builder()
1911
builder.build_snapshot('A-id', None,
1912
[('add', (u'', 'a-root-id', 'directory', None)),
1913
('add', (u'a', 'a-id', 'file', 'content\n')),
1914
('add', (u'b', 'b-id', 'file', 'content\n'))])
1915
builder.build_snapshot('B-id', ['A-id'],
1916
[('rename', ('b', 'c'))])
1917
builder.build_snapshot('C-id', ['A-id'], [])
1918
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1919
[('modify', ('a-id', 'new-content\n')),
1920
('modify', ('b-id', 'new-content\n'))])
1921
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1922
[('rename', ('c', 'b'))])
1923
merge_obj = self.make_merge_obj(builder, 'E-id',
1924
interesting_files=['c'])
1925
entries = list(merge_obj._entries_lca())
1926
root_id = 'a-root-id'
1927
self.assertEqual([('b-id', True,
1928
((root_id, [root_id, root_id]), root_id, root_id),
1929
((u'b', [u'c', u'b']), u'b', u'b'),
1930
((False, [False, False]), False, False)),
1933
def test_interesting_ids(self):
1934
# Two files modified, but we should filter one of them
1935
builder = self.get_builder()
1936
builder.build_snapshot('A-id', None,
1937
[('add', (u'', 'a-root-id', 'directory', None)),
1938
('add', (u'a', 'a-id', 'file', 'content\n')),
1939
('add', (u'b', 'b-id', 'file', 'content\n'))])
1940
builder.build_snapshot('B-id', ['A-id'], [])
1941
builder.build_snapshot('C-id', ['A-id'], [])
1942
builder.build_snapshot('E-id', ['C-id', 'B-id'],
1943
[('modify', ('a-id', 'new-content\n')),
1944
('modify', ('b-id', 'new-content\n'))])
1945
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
1946
merge_obj = self.make_merge_obj(builder, 'E-id',
1947
interesting_ids=['b-id'])
1948
entries = list(merge_obj._entries_lca())
1949
root_id = 'a-root-id'
1950
self.assertEqual([('b-id', True,
1951
((root_id, [root_id, root_id]), root_id, root_id),
1952
((u'b', [u'b', u'b']), u'b', u'b'),
1953
((False, [False, False]), False, False)),
1958
class TestMergerEntriesLCAOnDisk(tests.TestCaseWithTransport):
1960
def get_builder(self):
1961
builder = self.make_branch_builder('path')
1962
builder.start_series()
1963
self.addCleanup(builder.finish_series)
1966
def get_wt_from_builder(self, builder):
1967
"""Get a real WorkingTree from the builder."""
1968
the_branch = builder.get_branch()
1969
wt = the_branch.bzrdir.create_workingtree()
1970
# Note: This is a little bit ugly, but we are holding the branch
1971
# write-locked as part of the build process, and we would like to
1972
# maintain that. So we just force the WT to re-use the same
1974
wt._branch = the_branch
1976
self.addCleanup(wt.unlock)
1979
def do_merge(self, builder, other_revision_id):
1980
wt = self.get_wt_from_builder(builder)
1981
merger = _mod_merge.Merger.from_revision_ids(None,
1982
wt, other_revision_id)
1983
merger.merge_type = _mod_merge.Merge3Merger
1984
return wt, merger.do_merge()
1986
def test_simple_lca(self):
1987
builder = self.get_builder()
1988
builder.build_snapshot('A-id', None,
1989
[('add', (u'', 'a-root-id', 'directory', None)),
1990
('add', (u'a', 'a-id', 'file', 'a\nb\nc\n'))])
1991
builder.build_snapshot('C-id', ['A-id'], [])
1992
builder.build_snapshot('B-id', ['A-id'], [])
1993
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
1994
builder.build_snapshot('D-id', ['B-id', 'C-id'],
1995
[('modify', ('a-id', 'a\nb\nc\nd\ne\nf\n'))])
1996
wt, conflicts = self.do_merge(builder, 'E-id')
1997
self.assertEqual(0, conflicts)
1998
# The merge should have simply update the contents of 'a'
1999
self.assertEqual('a\nb\nc\nd\ne\nf\n', wt.get_file_text('a-id'))
2001
def test_conflict_without_lca(self):
2002
# This test would cause a merge conflict, unless we use the lca trees
2003
# to determine the real ancestry
2006
# B C Path renamed to 'bar' in B
2010
# D E Path at 'bar' in D and E
2012
# F Path at 'baz' in F, which supersedes 'bar' and 'foo'
2013
builder = self.get_builder()
2014
builder.build_snapshot('A-id', None,
2015
[('add', (u'', 'a-root-id', 'directory', None)),
2016
('add', (u'foo', 'foo-id', 'file', 'a\nb\nc\n'))])
2017
builder.build_snapshot('C-id', ['A-id'], [])
2018
builder.build_snapshot('B-id', ['A-id'],
2019
[('rename', ('foo', 'bar'))])
2020
builder.build_snapshot('E-id', ['C-id', 'B-id'], # merge the rename
2021
[('rename', ('foo', 'bar'))])
2022
builder.build_snapshot('F-id', ['E-id'],
2023
[('rename', ('bar', 'baz'))])
2024
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2025
wt, conflicts = self.do_merge(builder, 'F-id')
2026
self.assertEqual(0, conflicts)
2027
# The merge should simply recognize that the final rename takes
2029
self.assertEqual('baz', wt.id2path('foo-id'))
2031
def test_other_deletes_lca_renames(self):
2032
# This test would cause a merge conflict, unless we use the lca trees
2033
# to determine the real ancestry
2036
# B C Path renamed to 'bar' in B
2040
# D E Path at 'bar' in D and E
2043
builder = self.get_builder()
2044
builder.build_snapshot('A-id', None,
2045
[('add', (u'', 'a-root-id', 'directory', None)),
2046
('add', (u'foo', 'foo-id', 'file', 'a\nb\nc\n'))])
2047
builder.build_snapshot('C-id', ['A-id'], [])
2048
builder.build_snapshot('B-id', ['A-id'],
2049
[('rename', ('foo', 'bar'))])
2050
builder.build_snapshot('E-id', ['C-id', 'B-id'], # merge the rename
2051
[('rename', ('foo', 'bar'))])
2052
builder.build_snapshot('F-id', ['E-id'],
2053
[('unversion', 'foo-id')])
2054
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2055
wt, conflicts = self.do_merge(builder, 'F-id')
2056
self.assertEqual(0, conflicts)
2057
self.assertRaises(errors.NoSuchId, wt.id2path, 'foo-id')
2059
def test_executable_changes(self):
2068
# F Executable bit changed
2069
builder = self.get_builder()
2070
builder.build_snapshot('A-id', None,
2071
[('add', (u'', 'a-root-id', 'directory', None)),
2072
('add', (u'foo', 'foo-id', 'file', 'a\nb\nc\n'))])
2073
builder.build_snapshot('C-id', ['A-id'], [])
2074
builder.build_snapshot('B-id', ['A-id'], [])
2075
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2076
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
2077
# Have to use a real WT, because BranchBuilder doesn't support exec bit
2078
wt = self.get_wt_from_builder(builder)
2079
tt = transform.TreeTransform(wt)
2081
tt.set_executability(True, tt.trans_id_tree_file_id('foo-id'))
2086
self.assertTrue(wt.is_executable('foo-id'))
2087
wt.commit('F-id', rev_id='F-id')
2088
# Reset to D, so that we can merge F
2089
wt.set_parent_ids(['D-id'])
2090
wt.branch.set_last_revision_info(3, 'D-id')
2092
self.assertFalse(wt.is_executable('foo-id'))
2093
conflicts = wt.merge_from_branch(wt.branch, to_revision='F-id')
2094
self.assertEqual(0, conflicts)
2095
self.assertTrue(wt.is_executable('foo-id'))
2097
def test_create_symlink(self):
2098
self.requireFeature(tests.SymlinkFeature)
2107
# F Add a symlink 'foo' => 'bar'
2108
# Have to use a real WT, because BranchBuilder and MemoryTree don't
2109
# have symlink support
2110
builder = self.get_builder()
2111
builder.build_snapshot('A-id', None,
2112
[('add', (u'', 'a-root-id', 'directory', None))])
2113
builder.build_snapshot('C-id', ['A-id'], [])
2114
builder.build_snapshot('B-id', ['A-id'], [])
2115
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2116
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
2117
# Have to use a real WT, because BranchBuilder doesn't support exec bit
2118
wt = self.get_wt_from_builder(builder)
2119
os.symlink('bar', 'path/foo')
2120
wt.add(['foo'], ['foo-id'])
2121
self.assertEqual('bar', wt.get_symlink_target('foo-id'))
2122
wt.commit('add symlink', rev_id='F-id')
2123
# Reset to D, so that we can merge F
2124
wt.set_parent_ids(['D-id'])
2125
wt.branch.set_last_revision_info(3, 'D-id')
2127
self.assertIs(None, wt.path2id('foo'))
2128
conflicts = wt.merge_from_branch(wt.branch, to_revision='F-id')
2129
self.assertEqual(0, conflicts)
2130
self.assertEqual('foo-id', wt.path2id('foo'))
2131
self.assertEqual('bar', wt.get_symlink_target('foo-id'))
2133
def test_both_sides_revert(self):
2134
# Both sides of a criss-cross revert the text to the lca
2135
# A base, introduces 'foo'
2137
# B C B modifies 'foo', C modifies 'foo'
2139
# D E D reverts to B, E reverts to C
2140
# This should conflict
2141
# This must be done with a real WorkingTree, because normally their
2142
# inventory contains "None" rather than a real sha1
2143
builder = self.get_builder()
2144
builder.build_snapshot('A-id', None,
2145
[('add', (u'', 'a-root-id', 'directory', None)),
2146
('add', (u'foo', 'foo-id', 'file', 'A content\n'))])
2147
builder.build_snapshot('B-id', ['A-id'],
2148
[('modify', ('foo-id', 'B content\n'))])
2149
builder.build_snapshot('C-id', ['A-id'],
2150
[('modify', ('foo-id', 'C content\n'))])
2151
builder.build_snapshot('E-id', ['C-id', 'B-id'], [])
2152
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2153
wt, conflicts = self.do_merge(builder, 'E-id')
2154
self.assertEqual(1, conflicts)
2155
self.assertEqualDiff('<<<<<<< TREE\n'
2159
'>>>>>>> MERGE-SOURCE\n',
2160
wt.get_file_text('foo-id'))
2162
def test_modified_symlink(self):
2163
self.requireFeature(tests.SymlinkFeature)
2164
# A Create symlink foo => bar
2166
# B C B relinks foo => baz
2170
# D E D & E have foo => baz
2172
# F F changes it to bing
2174
# Merging D & F should result in F cleanly overriding D, because D's
2175
# value actually comes from B
2177
# Have to use a real WT, because BranchBuilder and MemoryTree don't
2178
# have symlink support
2179
wt = self.make_branch_and_tree('path')
2181
self.addCleanup(wt.unlock)
2182
os.symlink('bar', 'path/foo')
2183
wt.add(['foo'], ['foo-id'])
2184
wt.commit('add symlink', rev_id='A-id')
2185
os.remove('path/foo')
2186
os.symlink('baz', 'path/foo')
2187
wt.commit('foo => baz', rev_id='B-id')
2188
wt.set_last_revision('A-id')
2189
wt.branch.set_last_revision_info(1, 'A-id')
2191
wt.commit('C', rev_id='C-id')
2192
wt.merge_from_branch(wt.branch, 'B-id')
2193
self.assertEqual('baz', wt.get_symlink_target('foo-id'))
2194
wt.commit('E merges C & B', rev_id='E-id')
2195
os.remove('path/foo')
2196
os.symlink('bing', 'path/foo')
2197
wt.commit('F foo => bing', rev_id='F-id')
2198
wt.set_last_revision('B-id')
2199
wt.branch.set_last_revision_info(2, 'B-id')
2201
wt.merge_from_branch(wt.branch, 'C-id')
2202
wt.commit('D merges B & C', rev_id='D-id')
2203
conflicts = wt.merge_from_branch(wt.branch, to_revision='F-id')
2204
self.assertEqual(0, conflicts)
2205
self.assertEqual('bing', wt.get_symlink_target('foo-id'))
2207
def test_renamed_symlink(self):
2208
self.requireFeature(tests.SymlinkFeature)
2209
# A Create symlink foo => bar
2211
# B C B renames foo => barry
2215
# D E D & E have barry
2217
# F F renames barry to blah
2219
# Merging D & F should result in F cleanly overriding D, because D's
2220
# value actually comes from B
2222
wt = self.make_branch_and_tree('path')
2224
self.addCleanup(wt.unlock)
2225
os.symlink('bar', 'path/foo')
2226
wt.add(['foo'], ['foo-id'])
2227
wt.commit('A add symlink', rev_id='A-id')
2228
wt.rename_one('foo', 'barry')
2229
wt.commit('B foo => barry', rev_id='B-id')
2230
wt.set_last_revision('A-id')
2231
wt.branch.set_last_revision_info(1, 'A-id')
2233
wt.commit('C', rev_id='C-id')
2234
wt.merge_from_branch(wt.branch, 'B-id')
2235
self.assertEqual('barry', wt.id2path('foo-id'))
2236
self.assertEqual('bar', wt.get_symlink_target('foo-id'))
2237
wt.commit('E merges C & B', rev_id='E-id')
2238
wt.rename_one('barry', 'blah')
2239
wt.commit('F barry => blah', rev_id='F-id')
2240
wt.set_last_revision('B-id')
2241
wt.branch.set_last_revision_info(2, 'B-id')
2243
wt.merge_from_branch(wt.branch, 'C-id')
2244
wt.commit('D merges B & C', rev_id='D-id')
2245
self.assertEqual('barry', wt.id2path('foo-id'))
2246
# Check the output of the Merger object directly
2247
merger = _mod_merge.Merger.from_revision_ids(None,
2249
merger.merge_type = _mod_merge.Merge3Merger
2250
merge_obj = merger.make_merger()
2251
root_id = wt.path2id('')
2252
entries = list(merge_obj._entries_lca())
2253
# No content change, just a path change
2254
self.assertEqual([('foo-id', False,
2255
((root_id, [root_id, root_id]), root_id, root_id),
2256
((u'foo', [u'barry', u'foo']), u'blah', u'barry'),
2257
((False, [False, False]), False, False)),
2259
conflicts = wt.merge_from_branch(wt.branch, to_revision='F-id')
2260
self.assertEqual(0, conflicts)
2261
self.assertEqual('blah', wt.id2path('foo-id'))
2263
def test_symlink_no_content_change(self):
2264
self.requireFeature(tests.SymlinkFeature)
2265
# A Create symlink foo => bar
2267
# B C B relinks foo => baz
2271
# D E D & E have foo => baz
2273
# F F has foo => bing
2275
# Merging E into F should not cause a conflict, because E doesn't have
2276
# a content change relative to the LCAs (it does relative to A)
2277
wt = self.make_branch_and_tree('path')
2279
self.addCleanup(wt.unlock)
2280
os.symlink('bar', 'path/foo')
2281
wt.add(['foo'], ['foo-id'])
2282
wt.commit('add symlink', rev_id='A-id')
2283
os.remove('path/foo')
2284
os.symlink('baz', 'path/foo')
2285
wt.commit('foo => baz', rev_id='B-id')
2286
wt.set_last_revision('A-id')
2287
wt.branch.set_last_revision_info(1, 'A-id')
2289
wt.commit('C', rev_id='C-id')
2290
wt.merge_from_branch(wt.branch, 'B-id')
2291
self.assertEqual('baz', wt.get_symlink_target('foo-id'))
2292
wt.commit('E merges C & B', rev_id='E-id')
2293
wt.set_last_revision('B-id')
2294
wt.branch.set_last_revision_info(2, 'B-id')
2296
wt.merge_from_branch(wt.branch, 'C-id')
2297
wt.commit('D merges B & C', rev_id='D-id')
2298
os.remove('path/foo')
2299
os.symlink('bing', 'path/foo')
2300
wt.commit('F foo => bing', rev_id='F-id')
2302
# Check the output of the Merger object directly
2303
merger = _mod_merge.Merger.from_revision_ids(None,
2305
merger.merge_type = _mod_merge.Merge3Merger
2306
merge_obj = merger.make_merger()
2307
# Nothing interesting happened in OTHER relative to BASE
2308
self.assertEqual([], list(merge_obj._entries_lca()))
2309
# Now do a real merge, just to test the rest of the stack
2310
conflicts = wt.merge_from_branch(wt.branch, to_revision='E-id')
2311
self.assertEqual(0, conflicts)
2312
self.assertEqual('bing', wt.get_symlink_target('foo-id'))
2314
def test_symlink_this_changed_kind(self):
2315
self.requireFeature(tests.SymlinkFeature)
2318
# B C B creates symlink foo => bar
2322
# D E D changes foo into a file, E has foo => bing
2324
# Mostly, this is trying to test that we don't try to os.readlink() on
2325
# a file, or when there is nothing there
2326
wt = self.make_branch_and_tree('path')
2328
self.addCleanup(wt.unlock)
2329
wt.commit('base', rev_id='A-id')
2330
os.symlink('bar', 'path/foo')
2331
wt.add(['foo'], ['foo-id'])
2332
wt.commit('add symlink foo => bar', rev_id='B-id')
2333
wt.set_last_revision('A-id')
2334
wt.branch.set_last_revision_info(1, 'A-id')
2336
wt.commit('C', rev_id='C-id')
2337
wt.merge_from_branch(wt.branch, 'B-id')
2338
self.assertEqual('bar', wt.get_symlink_target('foo-id'))
2339
os.remove('path/foo')
2340
# We have to change the link in E, or it won't try to do a comparison
2341
os.symlink('bing', 'path/foo')
2342
wt.commit('E merges C & B, overrides to bing', rev_id='E-id')
2343
wt.set_last_revision('B-id')
2344
wt.branch.set_last_revision_info(2, 'B-id')
2346
wt.merge_from_branch(wt.branch, 'C-id')
2347
os.remove('path/foo')
2348
self.build_tree_contents([('path/foo', 'file content\n')])
2349
# XXX: workaround, WT doesn't detect kind changes unless you do
2351
list(wt.iter_changes(wt.basis_tree()))
2352
wt.commit('D merges B & C, makes it a file', rev_id='D-id')
2354
merger = _mod_merge.Merger.from_revision_ids(None,
2356
merger.merge_type = _mod_merge.Merge3Merger
2357
merge_obj = merger.make_merger()
2358
entries = list(merge_obj._entries_lca())
2359
root_id = wt.path2id('')
2360
self.assertEqual([('foo-id', True,
2361
((None, [root_id, None]), root_id, root_id),
2362
((None, [u'foo', None]), u'foo', u'foo'),
2363
((None, [False, None]), False, False)),
2366
def test_symlink_all_wt(self):
2367
"""Check behavior if all trees are Working Trees."""
2368
self.requireFeature(tests.SymlinkFeature)
2369
# The big issue is that entry.symlink_target is None for WorkingTrees.
2370
# So we need to make sure we handle that case correctly.
2373
# B C B relinks foo => baz
2375
# D E D & E have foo => baz
2377
# F F changes it to bing
2378
# Merging D & F should result in F cleanly overriding D, because D's
2379
# value actually comes from B
2381
wt = self.make_branch_and_tree('path')
2383
self.addCleanup(wt.unlock)
2384
os.symlink('bar', 'path/foo')
2385
wt.add(['foo'], ['foo-id'])
2386
wt.commit('add symlink', rev_id='A-id')
2387
os.remove('path/foo')
2388
os.symlink('baz', 'path/foo')
2389
wt.commit('foo => baz', rev_id='B-id')
2390
wt.set_last_revision('A-id')
2391
wt.branch.set_last_revision_info(1, 'A-id')
2393
wt.commit('C', rev_id='C-id')
2394
wt.merge_from_branch(wt.branch, 'B-id')
2395
self.assertEqual('baz', wt.get_symlink_target('foo-id'))
2396
wt.commit('E merges C & B', rev_id='E-id')
2397
os.remove('path/foo')
2398
os.symlink('bing', 'path/foo')
2399
wt.commit('F foo => bing', rev_id='F-id')
2400
wt.set_last_revision('B-id')
2401
wt.branch.set_last_revision_info(2, 'B-id')
2403
wt.merge_from_branch(wt.branch, 'C-id')
2404
wt.commit('D merges B & C', rev_id='D-id')
2405
wt_base = wt.bzrdir.sprout('base', 'A-id').open_workingtree()
2407
self.addCleanup(wt_base.unlock)
2408
wt_lca1 = wt.bzrdir.sprout('b-tree', 'B-id').open_workingtree()
2410
self.addCleanup(wt_lca1.unlock)
2411
wt_lca2 = wt.bzrdir.sprout('c-tree', 'C-id').open_workingtree()
2413
self.addCleanup(wt_lca2.unlock)
2414
wt_other = wt.bzrdir.sprout('other', 'F-id').open_workingtree()
2415
wt_other.lock_read()
2416
self.addCleanup(wt_other.unlock)
2417
merge_obj = _mod_merge.Merge3Merger(wt, wt, wt_base,
2418
wt_other, lca_trees=[wt_lca1, wt_lca2], do_merge=False)
2419
entries = list(merge_obj._entries_lca())
2420
root_id = wt.path2id('')
2421
self.assertEqual([('foo-id', True,
2422
((root_id, [root_id, root_id]), root_id, root_id),
2423
((u'foo', [u'foo', u'foo']), u'foo', u'foo'),
2424
((False, [False, False]), False, False)),
2427
def test_other_reverted_path_to_base(self):
2430
# B C Path at 'bar' in B
2437
builder = self.get_builder()
2438
builder.build_snapshot('A-id', None,
2439
[('add', (u'', 'a-root-id', 'directory', None)),
2440
('add', (u'foo', 'foo-id', 'file', 'a\nb\nc\n'))])
2441
builder.build_snapshot('C-id', ['A-id'], [])
2442
builder.build_snapshot('B-id', ['A-id'],
2443
[('rename', ('foo', 'bar'))])
2444
builder.build_snapshot('E-id', ['C-id', 'B-id'],
2445
[('rename', ('foo', 'bar'))]) # merge the rename
2446
builder.build_snapshot('F-id', ['E-id'],
2447
[('rename', ('bar', 'foo'))]) # Rename back to BASE
2448
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2449
wt, conflicts = self.do_merge(builder, 'F-id')
2450
self.assertEqual(0, conflicts)
2451
self.assertEqual('foo', wt.id2path('foo-id'))
2453
def test_other_reverted_content_to_base(self):
2454
builder = self.get_builder()
2455
builder.build_snapshot('A-id', None,
2456
[('add', (u'', 'a-root-id', 'directory', None)),
2457
('add', (u'foo', 'foo-id', 'file', 'base content\n'))])
2458
builder.build_snapshot('C-id', ['A-id'], [])
2459
builder.build_snapshot('B-id', ['A-id'],
2460
[('modify', ('foo-id', 'B content\n'))])
2461
builder.build_snapshot('E-id', ['C-id', 'B-id'],
2462
[('modify', ('foo-id', 'B content\n'))]) # merge the content
2463
builder.build_snapshot('F-id', ['E-id'],
2464
[('modify', ('foo-id', 'base content\n'))]) # Revert back to BASE
2465
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2466
wt, conflicts = self.do_merge(builder, 'F-id')
2467
self.assertEqual(0, conflicts)
2468
# TODO: We need to use the per-file graph to properly select a BASE
2469
# before this will work. Or at least use the LCA trees to find
2470
# the appropriate content base. (which is B, not A).
2471
self.assertEqual('base content\n', wt.get_file_text('foo-id'))
2473
def test_other_modified_content(self):
2474
builder = self.get_builder()
2475
builder.build_snapshot('A-id', None,
2476
[('add', (u'', 'a-root-id', 'directory', None)),
2477
('add', (u'foo', 'foo-id', 'file', 'base content\n'))])
2478
builder.build_snapshot('C-id', ['A-id'], [])
2479
builder.build_snapshot('B-id', ['A-id'],
2480
[('modify', ('foo-id', 'B content\n'))])
2481
builder.build_snapshot('E-id', ['C-id', 'B-id'],
2482
[('modify', ('foo-id', 'B content\n'))]) # merge the content
2483
builder.build_snapshot('F-id', ['E-id'],
2484
[('modify', ('foo-id', 'F content\n'))]) # Override B content
2485
builder.build_snapshot('D-id', ['B-id', 'C-id'], [])
2486
wt, conflicts = self.do_merge(builder, 'F-id')
2487
self.assertEqual(0, conflicts)
2488
self.assertEqual('F content\n', wt.get_file_text('foo-id'))
2490
def test_all_wt(self):
2491
"""Check behavior if all trees are Working Trees."""
2492
# The big issue is that entry.revision is None for WorkingTrees. (as is
2493
# entry.text_sha1, etc. So we need to make sure we handle that case
2495
# A Content of 'foo', path of 'a'
2497
# B C B modifies content, C renames 'a' => 'b'
2499
# D E E updates content, renames 'b' => 'c'
2500
builder = self.get_builder()
2501
builder.build_snapshot('A-id', None,
2502
[('add', (u'', 'a-root-id', 'directory', None)),
2503
('add', (u'a', 'a-id', 'file', 'base content\n')),
2504
('add', (u'foo', 'foo-id', 'file', 'base content\n'))])
2505
builder.build_snapshot('B-id', ['A-id'],
2506
[('modify', ('foo-id', 'B content\n'))])
2507
builder.build_snapshot('C-id', ['A-id'],
2508
[('rename', ('a', 'b'))])
2509
builder.build_snapshot('E-id', ['C-id', 'B-id'],
2510
[('rename', ('b', 'c')),
2511
('modify', ('foo-id', 'E content\n'))])
2512
builder.build_snapshot('D-id', ['B-id', 'C-id'],
2513
[('rename', ('a', 'b'))]) # merged change
2514
wt_this = self.get_wt_from_builder(builder)
2515
wt_base = wt_this.bzrdir.sprout('base', 'A-id').open_workingtree()
2517
self.addCleanup(wt_base.unlock)
2518
wt_lca1 = wt_this.bzrdir.sprout('b-tree', 'B-id').open_workingtree()
2520
self.addCleanup(wt_lca1.unlock)
2521
wt_lca2 = wt_this.bzrdir.sprout('c-tree', 'C-id').open_workingtree()
2523
self.addCleanup(wt_lca2.unlock)
2524
wt_other = wt_this.bzrdir.sprout('other', 'E-id').open_workingtree()
2525
wt_other.lock_read()
2526
self.addCleanup(wt_other.unlock)
2527
merge_obj = _mod_merge.Merge3Merger(wt_this, wt_this, wt_base,
2528
wt_other, lca_trees=[wt_lca1, wt_lca2], do_merge=False)
2529
entries = list(merge_obj._entries_lca())
2530
root_id = 'a-root-id'
2531
self.assertEqual([('a-id', False,
2532
((root_id, [root_id, root_id]), root_id, root_id),
2533
((u'a', [u'a', u'b']), u'c', u'b'),
2534
((False, [False, False]), False, False)),
2536
((root_id, [root_id, root_id]), root_id, root_id),
2537
((u'foo', [u'foo', u'foo']), u'foo', u'foo'),
2538
((False, [False, False]), False, False)),
2541
def test_nested_tree_unmodified(self):
2542
# Tested with a real WT, because BranchBuilder/MemoryTree don't handle
2544
wt = self.make_branch_and_tree('tree',
2545
format='dirstate-with-subtree')
2547
self.addCleanup(wt.unlock)
2548
sub_tree = self.make_branch_and_tree('tree/sub-tree',
2549
format='dirstate-with-subtree')
2550
wt.set_root_id('a-root-id')
2551
sub_tree.set_root_id('sub-tree-root')
2552
self.build_tree_contents([('tree/sub-tree/file', 'text1')])
2553
sub_tree.add('file')
2554
sub_tree.commit('foo', rev_id='sub-A-id')
2555
wt.add_reference(sub_tree)
2556
wt.commit('set text to 1', rev_id='A-id', recursive=None)
2557
# Now create a criss-cross merge in the parent, without modifying the
2559
wt.commit('B', rev_id='B-id', recursive=None)
2560
wt.set_last_revision('A-id')
2561
wt.branch.set_last_revision_info(1, 'A-id')
2562
wt.commit('C', rev_id='C-id', recursive=None)
2563
wt.merge_from_branch(wt.branch, to_revision='B-id')
2564
wt.commit('E', rev_id='E-id', recursive=None)
2565
wt.set_parent_ids(['B-id', 'C-id'])
2566
wt.branch.set_last_revision_info(2, 'B-id')
2567
wt.commit('D', rev_id='D-id', recursive=None)
2569
merger = _mod_merge.Merger.from_revision_ids(None,
2571
merger.merge_type = _mod_merge.Merge3Merger
2572
merge_obj = merger.make_merger()
2573
entries = list(merge_obj._entries_lca())
2574
self.assertEqual([], entries)
2576
def test_nested_tree_subtree_modified(self):
2577
# Tested with a real WT, because BranchBuilder/MemoryTree don't handle
2579
wt = self.make_branch_and_tree('tree',
2580
format='dirstate-with-subtree')
2582
self.addCleanup(wt.unlock)
2583
sub_tree = self.make_branch_and_tree('tree/sub',
2584
format='dirstate-with-subtree')
2585
wt.set_root_id('a-root-id')
2586
sub_tree.set_root_id('sub-tree-root')
2587
self.build_tree_contents([('tree/sub/file', 'text1')])
2588
sub_tree.add('file')
2589
sub_tree.commit('foo', rev_id='sub-A-id')
2590
wt.add_reference(sub_tree)
2591
wt.commit('set text to 1', rev_id='A-id', recursive=None)
2592
# Now create a criss-cross merge in the parent, without modifying the
2594
wt.commit('B', rev_id='B-id', recursive=None)
2595
wt.set_last_revision('A-id')
2596
wt.branch.set_last_revision_info(1, 'A-id')
2597
wt.commit('C', rev_id='C-id', recursive=None)
2598
wt.merge_from_branch(wt.branch, to_revision='B-id')
2599
self.build_tree_contents([('tree/sub/file', 'text2')])
2600
sub_tree.commit('modify contents', rev_id='sub-B-id')
2601
wt.commit('E', rev_id='E-id', recursive=None)
2602
wt.set_parent_ids(['B-id', 'C-id'])
2603
wt.branch.set_last_revision_info(2, 'B-id')
2604
wt.commit('D', rev_id='D-id', recursive=None)
2606
merger = _mod_merge.Merger.from_revision_ids(None,
2608
merger.merge_type = _mod_merge.Merge3Merger
2609
merge_obj = merger.make_merger()
2610
entries = list(merge_obj._entries_lca())
2611
# Nothing interesting about this sub-tree, because content changes are
2612
# computed at a higher level
2613
self.assertEqual([], entries)
2615
def test_nested_tree_subtree_renamed(self):
2616
# Tested with a real WT, because BranchBuilder/MemoryTree don't handle
2618
wt = self.make_branch_and_tree('tree',
2619
format='dirstate-with-subtree')
2621
self.addCleanup(wt.unlock)
2622
sub_tree = self.make_branch_and_tree('tree/sub',
2623
format='dirstate-with-subtree')
2624
wt.set_root_id('a-root-id')
2625
sub_tree.set_root_id('sub-tree-root')
2626
self.build_tree_contents([('tree/sub/file', 'text1')])
2627
sub_tree.add('file')
2628
sub_tree.commit('foo', rev_id='sub-A-id')
2629
wt.add_reference(sub_tree)
2630
wt.commit('set text to 1', rev_id='A-id', recursive=None)
2631
# Now create a criss-cross merge in the parent, without modifying the
2633
wt.commit('B', rev_id='B-id', recursive=None)
2634
wt.set_last_revision('A-id')
2635
wt.branch.set_last_revision_info(1, 'A-id')
2636
wt.commit('C', rev_id='C-id', recursive=None)
2637
wt.merge_from_branch(wt.branch, to_revision='B-id')
2638
wt.rename_one('sub', 'alt_sub')
2639
wt.commit('E', rev_id='E-id', recursive=None)
2640
wt.set_last_revision('B-id')
2642
wt.set_parent_ids(['B-id', 'C-id'])
2643
wt.branch.set_last_revision_info(2, 'B-id')
2644
wt.commit('D', rev_id='D-id', recursive=None)
2646
merger = _mod_merge.Merger.from_revision_ids(None,
2648
merger.merge_type = _mod_merge.Merge3Merger
2649
merge_obj = merger.make_merger()
2650
entries = list(merge_obj._entries_lca())
2651
root_id = 'a-root-id'
2652
self.assertEqual([('sub-tree-root', False,
2653
((root_id, [root_id, root_id]), root_id, root_id),
2654
((u'sub', [u'sub', u'sub']), u'alt_sub', u'sub'),
2655
((False, [False, False]), False, False)),
2658
def test_nested_tree_subtree_renamed_and_modified(self):
2659
# Tested with a real WT, because BranchBuilder/MemoryTree don't handle
2661
wt = self.make_branch_and_tree('tree',
2662
format='dirstate-with-subtree')
2664
self.addCleanup(wt.unlock)
2665
sub_tree = self.make_branch_and_tree('tree/sub',
2666
format='dirstate-with-subtree')
2667
wt.set_root_id('a-root-id')
2668
sub_tree.set_root_id('sub-tree-root')
2669
self.build_tree_contents([('tree/sub/file', 'text1')])
2670
sub_tree.add('file')
2671
sub_tree.commit('foo', rev_id='sub-A-id')
2672
wt.add_reference(sub_tree)
2673
wt.commit('set text to 1', rev_id='A-id', recursive=None)
2674
# Now create a criss-cross merge in the parent, without modifying the
2676
wt.commit('B', rev_id='B-id', recursive=None)
2677
wt.set_last_revision('A-id')
2678
wt.branch.set_last_revision_info(1, 'A-id')
2679
wt.commit('C', rev_id='C-id', recursive=None)
2680
wt.merge_from_branch(wt.branch, to_revision='B-id')
2681
self.build_tree_contents([('tree/sub/file', 'text2')])
2682
sub_tree.commit('modify contents', rev_id='sub-B-id')
2683
wt.rename_one('sub', 'alt_sub')
2684
wt.commit('E', rev_id='E-id', recursive=None)
2685
wt.set_last_revision('B-id')
2687
wt.set_parent_ids(['B-id', 'C-id'])
2688
wt.branch.set_last_revision_info(2, 'B-id')
2689
wt.commit('D', rev_id='D-id', recursive=None)
2691
merger = _mod_merge.Merger.from_revision_ids(None,
2693
merger.merge_type = _mod_merge.Merge3Merger
2694
merge_obj = merger.make_merger()
2695
entries = list(merge_obj._entries_lca())
2696
root_id = 'a-root-id'
2697
self.assertEqual([('sub-tree-root', False,
2698
((root_id, [root_id, root_id]), root_id, root_id),
2699
((u'sub', [u'sub', u'sub']), u'alt_sub', u'sub'),
2700
((False, [False, False]), False, False)),
2704
class TestLCAMultiWay(tests.TestCase):
2706
def assertLCAMultiWay(self, expected, base, lcas, other, this,
2707
allow_overriding_lca=True):
2708
self.assertEqual(expected, _mod_merge.Merge3Merger._lca_multi_way(
2709
(base, lcas), other, this,
2710
allow_overriding_lca=allow_overriding_lca))
2712
def test_other_equal_equal_lcas(self):
2713
"""Test when OTHER=LCA and all LCAs are identical."""
2714
self.assertLCAMultiWay('this',
2715
'bval', ['bval', 'bval'], 'bval', 'bval')
2716
self.assertLCAMultiWay('this',
2717
'bval', ['lcaval', 'lcaval'], 'lcaval', 'bval')
2718
self.assertLCAMultiWay('this',
2719
'bval', ['lcaval', 'lcaval', 'lcaval'], 'lcaval', 'bval')
2720
self.assertLCAMultiWay('this',
2721
'bval', ['lcaval', 'lcaval', 'lcaval'], 'lcaval', 'tval')
2722
self.assertLCAMultiWay('this',
2723
'bval', ['lcaval', 'lcaval', 'lcaval'], 'lcaval', None)
2725
def test_other_equal_this(self):
2726
"""Test when other and this are identical."""
2727
self.assertLCAMultiWay('this',
2728
'bval', ['bval', 'bval'], 'oval', 'oval')
2729
self.assertLCAMultiWay('this',
2730
'bval', ['lcaval', 'lcaval'], 'oval', 'oval')
2731
self.assertLCAMultiWay('this',
2732
'bval', ['cval', 'dval'], 'oval', 'oval')
2733
self.assertLCAMultiWay('this',
2734
'bval', [None, 'lcaval'], 'oval', 'oval')
2735
self.assertLCAMultiWay('this',
2736
None, [None, 'lcaval'], 'oval', 'oval')
2737
self.assertLCAMultiWay('this',
2738
None, ['lcaval', 'lcaval'], 'oval', 'oval')
2739
self.assertLCAMultiWay('this',
2740
None, ['cval', 'dval'], 'oval', 'oval')
2741
self.assertLCAMultiWay('this',
2742
None, ['cval', 'dval'], None, None)
2743
self.assertLCAMultiWay('this',
2744
None, ['cval', 'dval', 'eval', 'fval'], 'oval', 'oval')
2746
def test_no_lcas(self):
2747
self.assertLCAMultiWay('this',
2748
'bval', [], 'bval', 'tval')
2749
self.assertLCAMultiWay('other',
2750
'bval', [], 'oval', 'bval')
2751
self.assertLCAMultiWay('conflict',
2752
'bval', [], 'oval', 'tval')
2753
self.assertLCAMultiWay('this',
2754
'bval', [], 'oval', 'oval')
2756
def test_lca_supersedes_other_lca(self):
2757
"""If one lca == base, the other lca takes precedence"""
2758
self.assertLCAMultiWay('this',
2759
'bval', ['bval', 'lcaval'], 'lcaval', 'tval')
2760
self.assertLCAMultiWay('this',
2761
'bval', ['bval', 'lcaval'], 'lcaval', 'bval')
2762
# This is actually considered a 'revert' because the 'lcaval' in LCAS
2763
# supersedes the BASE val (in the other LCA) but then OTHER reverts it
2765
self.assertLCAMultiWay('other',
2766
'bval', ['bval', 'lcaval'], 'bval', 'lcaval')
2767
self.assertLCAMultiWay('conflict',
2768
'bval', ['bval', 'lcaval'], 'bval', 'tval')
2770
def test_other_and_this_pick_different_lca(self):
2771
# OTHER and THIS resolve the lca conflict in different ways
2772
self.assertLCAMultiWay('conflict',
2773
'bval', ['lca1val', 'lca2val'], 'lca1val', 'lca2val')
2774
self.assertLCAMultiWay('conflict',
2775
'bval', ['lca1val', 'lca2val', 'lca3val'], 'lca1val', 'lca2val')
2776
self.assertLCAMultiWay('conflict',
2777
'bval', ['lca1val', 'lca2val', 'bval'], 'lca1val', 'lca2val')
2779
def test_other_in_lca(self):
2780
# OTHER takes a value of one of the LCAs, THIS takes a new value, which
2781
# theoretically supersedes both LCA values and 'wins'
2782
self.assertLCAMultiWay('this',
2783
'bval', ['lca1val', 'lca2val'], 'lca1val', 'newval')
2784
self.assertLCAMultiWay('this',
2785
'bval', ['lca1val', 'lca2val', 'lca3val'], 'lca1val', 'newval')
2786
self.assertLCAMultiWay('conflict',
2787
'bval', ['lca1val', 'lca2val'], 'lca1val', 'newval',
2788
allow_overriding_lca=False)
2789
self.assertLCAMultiWay('conflict',
2790
'bval', ['lca1val', 'lca2val', 'lca3val'], 'lca1val', 'newval',
2791
allow_overriding_lca=False)
2792
# THIS reverted back to BASE, but that is an explicit supersede of all
2794
self.assertLCAMultiWay('this',
2795
'bval', ['lca1val', 'lca2val', 'lca3val'], 'lca1val', 'bval')
2796
self.assertLCAMultiWay('this',
2797
'bval', ['lca1val', 'lca2val', 'bval'], 'lca1val', 'bval')
2798
self.assertLCAMultiWay('conflict',
2799
'bval', ['lca1val', 'lca2val', 'lca3val'], 'lca1val', 'bval',
2800
allow_overriding_lca=False)
2801
self.assertLCAMultiWay('conflict',
2802
'bval', ['lca1val', 'lca2val', 'bval'], 'lca1val', 'bval',
2803
allow_overriding_lca=False)
2805
def test_this_in_lca(self):
2806
# THIS takes a value of one of the LCAs, OTHER takes a new value, which
2807
# theoretically supersedes both LCA values and 'wins'
2808
self.assertLCAMultiWay('other',
2809
'bval', ['lca1val', 'lca2val'], 'oval', 'lca1val')
2810
self.assertLCAMultiWay('other',
2811
'bval', ['lca1val', 'lca2val'], 'oval', 'lca2val')
2812
self.assertLCAMultiWay('conflict',
2813
'bval', ['lca1val', 'lca2val'], 'oval', 'lca1val',
2814
allow_overriding_lca=False)
2815
self.assertLCAMultiWay('conflict',
2816
'bval', ['lca1val', 'lca2val'], 'oval', 'lca2val',
2817
allow_overriding_lca=False)
2818
# OTHER reverted back to BASE, but that is an explicit supersede of all
2820
self.assertLCAMultiWay('other',
2821
'bval', ['lca1val', 'lca2val', 'lca3val'], 'bval', 'lca3val')
2822
self.assertLCAMultiWay('conflict',
2823
'bval', ['lca1val', 'lca2val', 'lca3val'], 'bval', 'lca3val',
2824
allow_overriding_lca=False)
2826
def test_all_differ(self):
2827
self.assertLCAMultiWay('conflict',
2828
'bval', ['lca1val', 'lca2val'], 'oval', 'tval')
2829
self.assertLCAMultiWay('conflict',
2830
'bval', ['lca1val', 'lca2val', 'lca2val'], 'oval', 'tval')
2831
self.assertLCAMultiWay('conflict',
2832
'bval', ['lca1val', 'lca2val', 'lca3val'], 'oval', 'tval')
2835
class TestConfigurableFileMerger(tests.TestCaseWithTransport):
2838
super(TestConfigurableFileMerger, self).setUp()
2841
def get_merger_factory(self):
2842
# Allows the inner methods to access the test attributes
2845
class FooMerger(_mod_merge.ConfigurableFileMerger):
2847
default_files = ['bar']
2849
def merge_text(self, params):
2850
test.calls.append('merge_text')
2851
return ('not_applicable', None)
2853
def factory(merger):
2854
result = FooMerger(merger)
2855
# Make sure we start with a clean slate
2856
self.assertEqual(None, result.affected_files)
2857
# Track the original merger
2858
self.merger = result
2863
def _install_hook(self, factory):
2864
_mod_merge.Merger.hooks.install_named_hook('merge_file_content',
2865
factory, 'test factory')
2867
def make_builder(self):
2868
builder = test_merge_core.MergeBuilder(self.test_base_dir)
2869
self.addCleanup(builder.cleanup)
2872
def make_text_conflict(self, file_name='bar'):
2873
factory = self.get_merger_factory()
2874
self._install_hook(factory)
2875
builder = self.make_builder()
2876
builder.add_file('bar-id', builder.tree_root, file_name, 'text1', True)
2877
builder.change_contents('bar-id', other='text4', this='text3')
2880
def make_kind_change(self):
2881
factory = self.get_merger_factory()
2882
self._install_hook(factory)
2883
builder = self.make_builder()
2884
builder.add_file('bar-id', builder.tree_root, 'bar', 'text1', True,
2886
builder.add_dir('bar-dir', builder.tree_root, 'bar-id',
2887
base=False, other=False)
2890
def test_uses_this_branch(self):
2891
builder = self.make_text_conflict()
2892
tt = builder.make_preview_transform()
2893
self.addCleanup(tt.finalize)
2895
def test_affected_files_cached(self):
2896
"""Ensures that the config variable is cached"""
2897
builder = self.make_text_conflict()
2898
conflicts = builder.merge()
2899
# The hook should set the variable
2900
self.assertEqual(['bar'], self.merger.affected_files)
2901
self.assertEqual(1, len(conflicts))
2903
def test_hook_called_for_text_conflicts(self):
2904
builder = self.make_text_conflict()
2905
conflicts = builder.merge()
2906
# The hook should call the merge_text() method
2907
self.assertEqual(['merge_text'], self.calls)
2909
def test_hook_not_called_for_kind_change(self):
2910
builder = self.make_kind_change()
2911
conflicts = builder.merge()
2912
# The hook should not call the merge_text() method
2913
self.assertEqual([], self.calls)
2915
def test_hook_not_called_for_other_files(self):
2916
builder = self.make_text_conflict('foobar')
2917
conflicts = builder.merge()
2918
# The hook should not call the merge_text() method
2919
self.assertEqual([], self.calls)
added
removed
bzrlib/tests/test_merge.py
