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Viewing changes to bzrlib/tests/blackbox/test_merge.py

  • Committer: Martin Pool
  • Date: 2008-01-04 00:42:06 UTC
  • mto: This revision was merged to the branch mainline in revision 3169.
  • Revision ID: mbp@sourcefrog.net-20080104004206-vsi8oyind9rkfd96
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bzrlib/tests/blackbox/test_merge.py
1
 
# Copyright (C) 2006-2010 Canonical Ltd
 
1
# Copyright (C) 2006, 2007 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
12
12
#
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
16
#
17
17
# Author: Aaron Bentley <aaron.bentley@utoronto.ca>
18
18
 
21
21
 
22
22
import os
23
23
 
24
 
from bzrlib import (
25
 
    branch,
26
 
    bzrdir,
27
 
    conflicts,
28
 
    errors,
29
 
    merge_directive,
30
 
    osutils,
31
 
    tests,
32
 
    urlutils,
33
 
    workingtree,
34
 
    )
35
 
 
36
 
 
37
 
class TestMerge(tests.TestCaseWithTransport):
 
24
from bzrlib import merge_directive
 
25
from bzrlib.branch import Branch
 
26
from bzrlib.bzrdir import BzrDir
 
27
from bzrlib.conflicts import ConflictList, ContentsConflict
 
28
from bzrlib.osutils import abspath, file_kind, pathjoin
 
29
from bzrlib.tests.blackbox import ExternalBase
 
30
import bzrlib.urlutils as urlutils
 
31
from bzrlib.workingtree import WorkingTree
 
32
 
 
33
 
 
34
class TestMerge(ExternalBase):
38
35
 
39
36
    def example_branch(self, path='.'):
40
37
        tree = self.make_branch_and_tree(path)
41
38
        self.build_tree_contents([
42
 
            (osutils.pathjoin(path, 'hello'), 'foo'),
43
 
            (osutils.pathjoin(path, 'goodbye'), 'baz')])
 
39
            (pathjoin(path, 'hello'), 'foo'),
 
40
            (pathjoin(path, 'goodbye'), 'baz')])
44
41
        tree.add('hello')
45
42
        tree.commit(message='setup')
46
43
        tree.add('goodbye')
47
44
        tree.commit(message='setup')
48
45
        return tree
49
46
 
50
 
    def create_conflicting_branches(self):
51
 
        """Create two branches which have overlapping modifications.
52
 
 
53
 
        :return: (tree, other_branch) Where merging other_branch causes a file
54
 
            conflict.
55
 
        """
56
 
        builder = self.make_branch_builder('branch')
57
 
        builder.build_snapshot('rev1', None,
58
 
            [('add', ('', 'root-id', 'directory', None)),
59
 
             ('add', ('fname', 'f-id', 'file', 'a\nb\nc\n'))])
60
 
        builder.build_snapshot('rev2other', ['rev1'],
61
 
            [('modify', ('f-id', 'a\nB\nD\n'))])
62
 
        other = builder.get_branch().bzrdir.sprout('other').open_branch()
63
 
        builder.build_snapshot('rev2this', ['rev1'],
64
 
            [('modify', ('f-id', 'a\nB\nC\n'))])
65
 
        tree = builder.get_branch().create_checkout('tree', lightweight=True)
66
 
        return tree, other
67
 
 
68
47
    def test_merge_reprocess(self):
69
 
        d = bzrdir.BzrDir.create_standalone_workingtree('.')
 
48
        d = BzrDir.create_standalone_workingtree('.')
70
49
        d.commit('h')
71
50
        self.run_bzr('merge . --reprocess --merge-type weave')
72
51
 
73
52
    def test_merge(self):
 
53
        from bzrlib.branch import Branch
 
54
 
74
55
        a_tree = self.example_branch('a')
75
56
        ancestor = a_tree.branch.revno()
76
57
        b_tree = a_tree.bzrdir.sprout('b').open_workingtree()
81
62
        # We can't merge when there are in-tree changes
82
63
        os.chdir('a')
83
64
        self.run_bzr('merge ../b', retcode=3)
84
 
        a = workingtree.WorkingTree.open('.')
 
65
        a = WorkingTree.open('.')
85
66
        a_tip = a.commit("Like an epidemic of u's")
86
67
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type blooof',
87
68
                    retcode=3)
100
81
        self.run_bzr('merge ../b -r last:1')
101
82
        self.check_file_contents('goodbye', 'quux')
102
83
        # Merging a branch pulls its revision into the tree
103
 
        b = branch.Branch.open('../b')
 
84
        b = Branch.open('../b')
104
85
        b_tip = b.last_revision()
105
86
        self.failUnless(a.branch.repository.has_revision(b_tip))
106
87
        self.assertEqual([a_tip, b_tip], a.get_parent_ids())
109
90
        self.assertTrue("Not a branch" in err)
110
91
        self.run_bzr('merge -r revno:%d:./..revno:%d:../b'
111
92
                    %(ancestor,b.revno()))
112
 
        self.assertEquals(a.get_parent_ids(),
 
93
        self.assertEquals(a.get_parent_ids(), 
113
94
                          [a.branch.last_revision(), b.last_revision()])
114
95
        self.check_file_contents('goodbye', 'quux')
115
96
        a_tree.revert(backups=False)
120
101
        self.run_bzr('merge ../b -r last:1')
121
102
        self.assertEqual([a_tip], a.get_parent_ids())
122
103
 
123
 
    def test_merge_defaults_to_reprocess(self):
124
 
        tree, other = self.create_conflicting_branches()
125
 
        # The default merge algorithm should enable 'reprocess' because
126
 
        # 'show-base' is not set
127
 
        self.run_bzr('merge ../other', working_dir='tree',
128
 
                     retcode=1)
129
 
        self.assertEqualDiff('a\n'
130
 
                             'B\n'
131
 
                             '<<<<<<< TREE\n'
132
 
                             'C\n'
133
 
                             '=======\n'
134
 
                             'D\n'
135
 
                             '>>>>>>> MERGE-SOURCE\n',
136
 
                             tree.get_file_text('f-id'))
137
 
 
138
 
    def test_merge_explicit_reprocess_show_base(self):
139
 
        tree, other = self.create_conflicting_branches()
140
 
        # Explicitly setting --reprocess, and --show-base is an error
141
 
        self.run_bzr_error(['Cannot do conflict reduction and show base'],
142
 
                           'merge ../other --reprocess --show-base',
143
 
                           working_dir='tree')
144
 
 
145
 
    def test_merge_override_reprocess(self):
146
 
        tree, other = self.create_conflicting_branches()
147
 
        # Explicitly disable reprocess
148
 
        self.run_bzr('merge ../other --no-reprocess', working_dir='tree',
149
 
                     retcode=1)
150
 
        self.assertEqualDiff('a\n'
151
 
                             '<<<<<<< TREE\n'
152
 
                             'B\n'
153
 
                             'C\n'
154
 
                             '=======\n'
155
 
                             'B\n'
156
 
                             'D\n'
157
 
                             '>>>>>>> MERGE-SOURCE\n',
158
 
                             tree.get_file_text('f-id'))
159
 
 
160
 
    def test_merge_override_show_base(self):
161
 
        tree, other = self.create_conflicting_branches()
162
 
        # Setting '--show-base' will auto-disable '--reprocess'
163
 
        self.run_bzr('merge ../other --show-base', working_dir='tree',
164
 
                     retcode=1)
165
 
        self.assertEqualDiff('a\n'
166
 
                             '<<<<<<< TREE\n'
167
 
                             'B\n'
168
 
                             'C\n'
169
 
                             '||||||| BASE-REVISION\n'
170
 
                             'b\n'
171
 
                             'c\n'
172
 
                             '=======\n'
173
 
                             'B\n'
174
 
                             'D\n'
175
 
                             '>>>>>>> MERGE-SOURCE\n',
176
 
                             tree.get_file_text('f-id'))
177
 
 
178
104
    def test_merge_with_missing_file(self):
179
105
        """Merge handles missing file conflicts"""
180
106
        self.build_tree_contents([
211
137
        self.failUnlessExists('sub/a.txt.OTHER')
212
138
        self.failUnlessExists('sub/a.txt.BASE')
213
139
 
214
 
    def test_conflict_leaves_base_this_other_files(self):
215
 
        tree, other = self.create_conflicting_branches()
216
 
        self.run_bzr('merge ../other', working_dir='tree',
217
 
                     retcode=1)
218
 
        self.assertFileEqual('a\nb\nc\n', 'tree/fname.BASE')
219
 
        self.assertFileEqual('a\nB\nD\n', 'tree/fname.OTHER')
220
 
        self.assertFileEqual('a\nB\nC\n', 'tree/fname.THIS')
221
 
 
222
 
    def test_weave_conflict_leaves_base_this_other_files(self):
223
 
        tree, other = self.create_conflicting_branches()
224
 
        self.run_bzr('merge ../other --weave', working_dir='tree',
225
 
                     retcode=1)
226
 
        self.assertFileEqual('a\nb\nc\n', 'tree/fname.BASE')
227
 
        self.assertFileEqual('a\nB\nD\n', 'tree/fname.OTHER')
228
 
        self.assertFileEqual('a\nB\nC\n', 'tree/fname.THIS')
229
 
 
230
140
    def test_merge_remember(self):
231
 
        """Merge changes from one branch to another, test submit location."""
 
141
        """Merge changes from one branch to another and test parent location."""
232
142
        tree_a = self.make_branch_and_tree('branch_a')
233
143
        branch_a = tree_a.branch
234
144
        self.build_tree(['branch_a/a'])
253
163
        out = self.run_bzr('merge', retcode=3)
254
164
        self.assertEquals(out,
255
165
                ('','bzr: ERROR: No location specified or remembered\n'))
256
 
 
257
 
        # test uncommitted changes
 
166
        # test implicit --remember when no parent set, this merge conflicts
258
167
        self.build_tree(['d'])
259
168
        tree_b.add('d')
260
169
        self.run_bzr_error(['Working tree ".*" has uncommitted changes'],
261
 
                           'merge')
262
 
 
263
 
        # merge should now pass and implicitly remember merge location
 
170
                           'merge ../branch_a')
 
171
        self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
 
172
        # test implicit --remember after resolving conflict
264
173
        tree_b.commit('commit d')
265
 
        out, err = self.run_bzr('merge ../branch_a')
266
 
 
 
174
        out, err = self.run_bzr('merge')
 
175
        
267
176
        base = urlutils.local_path_from_url(branch_a.base)
268
 
        self.assertEndsWith(err, '+N  b\nAll changes applied successfully.\n')
269
 
        self.assertEquals(osutils.abspath(branch_b.get_submit_branch()),
270
 
                          osutils.abspath(parent))
271
 
        # test implicit --remember when committing new file
272
 
        self.build_tree(['e'])
273
 
        tree_b.add('e')
274
 
        tree_b.commit('commit e')
275
 
        out, err = self.run_bzr('merge')
276
 
        self.assertStartsWith(err,
277
 
                          'Merging from remembered submit location %s\n' % (base,))
 
177
        self.assertEquals(out, 'Merging from remembered location %s\n' % (base,))
 
178
        self.assertEquals(err, '+N  b\nAll changes applied successfully.\n')
 
179
        self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
278
180
        # re-open tree as external run_bzr modified it
279
181
        tree_b = branch_b.bzrdir.open_workingtree()
280
182
        tree_b.commit('merge branch_a')
282
184
        out, err = self.run_bzr('merge ../branch_c --remember')
283
185
        self.assertEquals(out, '')
284
186
        self.assertEquals(err, '+N  c\nAll changes applied successfully.\n')
285
 
        self.assertEquals(osutils.abspath(branch_b.get_submit_branch()),
286
 
                          osutils.abspath(branch_c.bzrdir.root_transport.base))
 
187
        self.assertEquals(abspath(branch_b.get_parent()),
 
188
                          abspath(branch_c.bzrdir.root_transport.base))
287
189
        # re-open tree as external run_bzr modified it
288
190
        tree_b = branch_b.bzrdir.open_workingtree()
289
191
        tree_b.commit('merge branch_c')
311
213
                                              tree_b.get_parent_ids()[0])
312
214
        self.assertEqualDiff(testament_a.as_text(),
313
215
                         testament_b.as_text())
314
 
        tree_a.set_conflicts(conflicts.ConflictList())
 
216
        tree_a.set_conflicts(ConflictList())
315
217
        tree_a.commit('message')
316
218
        # it is legal to attempt to merge an already-merged bundle
317
219
        output = self.run_bzr('merge ../bundle')[1]
366
268
        os.chdir('a')
367
269
        (out, err) = self.run_bzr('merge --pull ../b')
368
270
        self.assertContainsRe(out, 'Now on revision 2\\.')
369
 
        tree_a = workingtree.WorkingTree.open('.')
 
271
        tree_a = WorkingTree.open('.')
370
272
        self.assertEqual([self.id2], tree_a.get_parent_ids())
371
273
 
372
274
    def test_merge_kind_change(self):
380
282
        tree_a.commit('changed file to directory')
381
283
        os.chdir('tree_b')
382
284
        self.run_bzr('merge ../tree_a')
383
 
        self.assertEqual('directory', osutils.file_kind('file'))
 
285
        self.assertEqual('directory', file_kind('file'))
384
286
        tree_b.revert()
385
 
        self.assertEqual('file', osutils.file_kind('file'))
 
287
        self.assertEqual('file', file_kind('file'))
386
288
        self.build_tree_contents([('file', 'content_2')])
387
289
        tree_b.commit('content change')
388
290
        self.run_bzr('merge ../tree_a', retcode=1)
389
291
        self.assertEqual(tree_b.conflicts(),
390
 
                         [conflicts.ContentsConflict('file',
391
 
                                                     file_id='file-id')])
 
292
                         [ContentsConflict('file', file_id='file-id')])
392
293
 
393
294
    def test_directive_cherrypick(self):
394
295
        source = self.make_branch_and_tree('source')
395
 
        source.commit("nothing")
396
 
        # see https://bugs.edge.launchpad.net/bzr/+bug/409688 - trying to
397
 
        # cherrypick from one branch into another unrelated branch with a
398
 
        # different root id will give shape conflicts.  as a workaround we
399
 
        # make sure they share the same root id.
400
 
        target = source.bzrdir.sprout('target').open_workingtree()
401
296
        self.build_tree(['source/a'])
402
297
        source.add('a')
403
298
        source.commit('Added a', rev_id='rev1')
404
299
        self.build_tree(['source/b'])
405
300
        source.add('b')
406
301
        source.commit('Added b', rev_id='rev2')
 
302
        target = self.make_branch_and_tree('target')
407
303
        target.commit('empty commit')
408
304
        self.write_directive('directive', source.branch, 'target', 'rev2',
409
305
                             'rev1')
466
362
 
467
363
    def assertDirectoryContent(self, directory, entries, message=''):
468
364
        """Assert whether entries (file or directories) exist in a directory.
469
 
 
 
365
        
470
366
        It also checks that there are no extra entries.
471
367
        """
472
368
        ondisk = os.listdir(directory)
514
410
        out, err = self.run_bzr(['merge', '-d', 'a', 'b'])
515
411
        self.assertContainsRe(err, 'Warning: criss-cross merge encountered.')
516
412
 
517
 
    def test_merge_from_submit(self):
518
 
        tree_a = self.make_branch_and_tree('a')
519
 
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
520
 
        tree_c = tree_a.bzrdir.sprout('c').open_workingtree()
521
 
        out, err = self.run_bzr(['merge', '-d', 'c'])
522
 
        self.assertContainsRe(err, 'Merging from remembered parent location .*a\/')
523
 
        tree_c.branch.set_submit_branch(tree_b.bzrdir.root_transport.base)
524
 
        out, err = self.run_bzr(['merge', '-d', 'c'])
525
 
        self.assertContainsRe(err, 'Merging from remembered submit location .*b\/')
526
 
 
527
 
    def test_remember_sets_submit(self):
528
 
        tree_a = self.make_branch_and_tree('a')
529
 
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
530
 
        self.assertIs(tree_b.branch.get_submit_branch(), None)
531
 
 
532
 
        # Remember should not happen if using default from parent
533
 
        out, err = self.run_bzr(['merge', '-d', 'b'])
534
 
        self.assertIs(tree_b.branch.get_submit_branch(), None)
535
 
 
536
 
        # Remember should happen if user supplies location
537
 
        out, err = self.run_bzr(['merge', '-d', 'b', 'a'])
538
 
        self.assertEqual(tree_b.branch.get_submit_branch(),
539
 
                         tree_a.bzrdir.root_transport.base)
540
 
 
541
413
    def test_weave_cherrypick(self):
542
414
        this_tree = self.make_branch_and_tree('this')
543
415
        self.build_tree_contents([('this/file', "a\n")])
566
438
        tree_a.merge_from_branch(tree_b.branch)
567
439
        self.build_tree_contents([('a/file',
568
440
                                   'base-contents\nthis-contents\n')])
569
 
        tree_a.set_conflicts(conflicts.ConflictList())
 
441
        tree_a.set_conflicts(ConflictList())
570
442
        tree_b.merge_from_branch(tree_a.branch)
571
443
        self.build_tree_contents([('b/file',
572
444
                                   'base-contents\nother-contents\n')])
573
 
        tree_b.set_conflicts(conflicts.ConflictList())
 
445
        tree_b.set_conflicts(ConflictList())
574
446
        tree_a.commit('', rev_id='rev3a')
575
447
        tree_b.commit('', rev_id='rev3b')
576
448
        out, err = self.run_bzr(['merge', '-d', 'a', 'b', '--lca'], retcode=1)
577
449
        self.assertFileEqual('base-contents\n<<<<<<< TREE\nthis-contents\n'
578
450
                             '=======\nother-contents\n>>>>>>> MERGE-SOURCE\n',
579
451
                             'a/file')
580
 
 
581
 
    def test_merge_preview(self):
582
 
        this_tree = self.make_branch_and_tree('this')
583
 
        this_tree.commit('rev1')
584
 
        other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
585
 
        self.build_tree_contents([('other/file', 'new line')])
586
 
        other_tree.add('file')
587
 
        other_tree.commit('rev2a')
588
 
        this_tree.commit('rev2b')
589
 
        out, err = self.run_bzr(['merge', '-d', 'this', 'other', '--preview'])
590
 
        self.assertContainsRe(out, '\+new line')
591
 
        self.assertNotContainsRe(err, '\+N  file\n')
592
 
        this_tree.lock_read()
593
 
        self.addCleanup(this_tree.unlock)
594
 
        self.assertEqual([],
595
 
                         list(this_tree.iter_changes(this_tree.basis_tree())))
596
 
 
597
 
    def test_merge_missing_second_revision_spec(self):
598
 
        """Merge uses branch basis when the second revision is unspecified."""
599
 
        this = self.make_branch_and_tree('this')
600
 
        this.commit('rev1')
601
 
        other = self.make_branch_and_tree('other')
602
 
        self.build_tree(['other/other_file'])
603
 
        other.add('other_file')
604
 
        other.commit('rev1b')
605
 
        self.run_bzr('merge -d this other -r0..')
606
 
        self.failUnlessExists('this/other_file')
607
 
 
608
 
    def test_merge_interactive_unlocks_branch(self):
609
 
        this = self.make_branch_and_tree('this')
610
 
        other = self.make_branch_and_tree('other')
611
 
        other.commit('empty commit')
612
 
        self.run_bzr('merge -i -d this other')
613
 
        this.lock_write()
614
 
        this.unlock()
615
 
 
616
 
    def test_merge_reversed_revision_range(self):
617
 
        tree = self.make_branch_and_tree(".")
618
 
        for f in ("a", "b"):
619
 
            self.build_tree([f])
620
 
            tree.add(f)
621
 
            tree.commit("added "+f)
622
 
        for context in (".", "", "a"):
623
 
            self.run_bzr("merge -r 1..0 " + context)
624
 
            self.failIfExists("a")
625
 
            tree.revert()
626
 
            self.failUnlessExists("a")
627
 
 
628
 
 
629
 
class TestMergeForce(tests.TestCaseWithTransport):
630
 
 
631
 
    def setUp(self):
632
 
        super(TestMergeForce, self).setUp()
633
 
        self.tree_a = self.make_branch_and_tree('a')
634
 
        self.build_tree(['a/foo'])
635
 
        self.tree_a.add(['foo'])
636
 
        self.tree_a.commit('add file')
637
 
        self.tree_b = self.tree_a.bzrdir.sprout('b').open_workingtree()
638
 
        self.build_tree_contents([('a/foo', 'change 1')])
639
 
        self.tree_a.commit('change file')
640
 
        self.tree_b.merge_from_branch(self.tree_a.branch)
641
 
 
642
 
    def test_merge_force(self):
643
 
        self.tree_a.commit('empty change to allow merge to run')
644
 
        # Second merge on top of the uncommitted one
645
 
        self.run_bzr(['merge', '../a', '--force'], working_dir='b')
646
 
 
647
 
 
648
 
    def test_merge_with_uncommitted_changes(self):
649
 
        self.run_bzr_error(['Working tree .* has uncommitted changes'],
650
 
                           ['merge', '../a'], working_dir='b')
651
 
 
652
 
    def test_merge_with_pending_merges(self):
653
 
        # Revert the changes keeping the pending merge
654
 
        self.run_bzr(['revert', 'b'])
655
 
        self.run_bzr_error(['Working tree .* has uncommitted changes'],
656
 
                           ['merge', '../a'], working_dir='b')