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bzrlib/tests/blackbox/test_merge.py
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# Copyright (C) 2006, 2007 Canonical Ltd
 
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# Copyright (C) 2006-2012 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#
17
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# Author: Aaron Bentley <aaron.bentley@utoronto.ca>
18
18
 
19
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"""Black-box tests for bzr merge.
20
20
"""
21
21
 
 
22
import doctest
22
23
import os
23
24
 
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
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):
35
 
 
36
 
    def example_branch(test):
37
 
        test.run_bzr('init')
38
 
        file('hello', 'wt').write('foo')
39
 
        test.run_bzr('add hello')
40
 
        test.run_bzr('commit -m setup hello')
41
 
        file('goodbye', 'wt').write('baz')
42
 
        test.run_bzr('add goodbye')
43
 
        test.run_bzr('commit -m setup goodbye')
 
25
from testtools import matchers
 
26
 
 
27
from bzrlib import (
 
28
    branch,
 
29
    conflicts,
 
30
    controldir,
 
31
    merge_directive,
 
32
    osutils,
 
33
    tests,
 
34
    urlutils,
 
35
    workingtree,
 
36
    )
 
37
from bzrlib.tests import (
 
38
    scenarios,
 
39
    script,
 
40
    )
 
41
 
 
42
 
 
43
load_tests = scenarios.load_tests_apply_scenarios
 
44
 
 
45
 
 
46
class TestMerge(tests.TestCaseWithTransport):
 
47
 
 
48
    def example_branch(self, path='.'):
 
49
        tree = self.make_branch_and_tree(path)
 
50
        self.build_tree_contents([
 
51
            (osutils.pathjoin(path, 'hello'), 'foo'),
 
52
            (osutils.pathjoin(path, 'goodbye'), 'baz')])
 
53
        tree.add('hello')
 
54
        tree.commit(message='setup')
 
55
        tree.add('goodbye')
 
56
        tree.commit(message='setup')
 
57
        return tree
 
58
 
 
59
    def create_conflicting_branches(self):
 
60
        """Create two branches which have overlapping modifications.
 
61
 
 
62
        :return: (tree, other_branch) Where merging other_branch causes a file
 
63
            conflict.
 
64
        """
 
65
        builder = self.make_branch_builder('branch')
 
66
        builder.build_snapshot('rev1', None,
 
67
            [('add', ('', 'root-id', 'directory', None)),
 
68
             ('add', ('fname', 'f-id', 'file', 'a\nb\nc\n'))])
 
69
        builder.build_snapshot('rev2other', ['rev1'],
 
70
            [('modify', ('f-id', 'a\nB\nD\n'))])
 
71
        other = builder.get_branch().bzrdir.sprout('other').open_branch()
 
72
        builder.build_snapshot('rev2this', ['rev1'],
 
73
            [('modify', ('f-id', 'a\nB\nC\n'))])
 
74
        tree = builder.get_branch().create_checkout('tree', lightweight=True)
 
75
        return tree, other
44
76
 
45
77
    def test_merge_reprocess(self):
46
 
        d = BzrDir.create_standalone_workingtree('.')
 
78
        d = controldir.ControlDir.create_standalone_workingtree('.')
47
79
        d.commit('h')
48
80
        self.run_bzr('merge . --reprocess --merge-type weave')
49
81
 
50
82
    def test_merge(self):
51
 
        from bzrlib.branch import Branch
52
 
        
53
 
        os.mkdir('a')
54
 
        os.chdir('a')
55
 
        self.example_branch()
56
 
        ancestor = Branch.open('.').revno()
57
 
        os.chdir('..')
58
 
        self.run_bzr('branch a b')
59
 
        os.chdir('b')
60
 
        file('goodbye', 'wt').write('quux')
61
 
        self.run_bzr(['commit',  '-m',  "more u's are always good"])
 
83
        a_tree = self.example_branch('a')
 
84
        ancestor = a_tree.branch.revno()
 
85
        b_tree = a_tree.bzrdir.sprout('b').open_workingtree()
 
86
        self.build_tree_contents([('b/goodbye', 'quux')])
 
87
        b_tree.commit(message="more u's are always good")
62
88
 
63
 
        os.chdir('../a')
64
 
        file('hello', 'wt').write('quuux')
 
89
        self.build_tree_contents([('a/hello', 'quuux')])
65
90
        # We can't merge when there are in-tree changes
66
 
        self.run_bzr('merge ../b', retcode=3)
67
 
        a = WorkingTree.open('.')
 
91
        self.run_bzr('merge ../b', retcode=3, working_dir='a')
 
92
        a = workingtree.WorkingTree.open('a')
68
93
        a_tip = a.commit("Like an epidemic of u's")
69
 
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type blooof',
70
 
                    retcode=3)
71
 
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type merge3')
72
 
        self.run_bzr('revert --no-backup')
73
 
        self.run_bzr('merge ../b -r last:1..last:1 --merge-type weave')
74
 
        self.run_bzr('revert --no-backup')
75
 
        self.run_bzr('merge ../b -r last:1..last:1 --reprocess')
76
 
        self.run_bzr('revert --no-backup')
77
 
        self.run_bzr('merge ../b -r last:1')
78
 
        self.check_file_contents('goodbye', 'quux')
 
94
 
 
95
        def run_merge_then_revert(args, retcode=None, working_dir='a'):
 
96
            self.run_bzr(['merge', '../b', '-r', 'last:1..last:1'] + args,
 
97
                         retcode=retcode, working_dir=working_dir)
 
98
            if retcode != 3:
 
99
                a_tree.revert(backups=False)
 
100
 
 
101
        run_merge_then_revert(['--merge-type', 'bloof'], retcode=3)
 
102
        run_merge_then_revert(['--merge-type', 'merge3'])
 
103
        run_merge_then_revert(['--merge-type', 'weave'])
 
104
        run_merge_then_revert(['--merge-type', 'lca'])
 
105
        self.run_bzr_error(['Show-base is not supported for this merge type'],
 
106
                           'merge ../b -r last:1..last:1 --merge-type weave'
 
107
                           ' --show-base', working_dir='a')
 
108
        a_tree.revert(backups=False)
 
109
        self.run_bzr('merge ../b -r last:1..last:1 --reprocess',
 
110
                     working_dir='a')
 
111
        a_tree.revert(backups=False)
 
112
        self.run_bzr('merge ../b -r last:1', working_dir='a')
 
113
        self.check_file_contents('a/goodbye', 'quux')
79
114
        # Merging a branch pulls its revision into the tree
80
 
        b = Branch.open('../b')
 
115
        b = branch.Branch.open('b')
81
116
        b_tip = b.last_revision()
82
 
        self.failUnless(a.branch.repository.has_revision(b_tip))
 
117
        self.assertTrue(a.branch.repository.has_revision(b_tip))
83
118
        self.assertEqual([a_tip, b_tip], a.get_parent_ids())
84
 
        self.run_bzr('revert --no-backup')
85
 
        out, err = self.run_bzr('merge -r revno:1:./hello', retcode=3)
 
119
        a_tree.revert(backups=False)
 
120
        out, err = self.run_bzr('merge -r revno:1:./hello', retcode=3,
 
121
                                working_dir='a')
86
122
        self.assertTrue("Not a branch" in err)
87
123
        self.run_bzr('merge -r revno:%d:./..revno:%d:../b'
88
 
                    %(ancestor,b.revno()))
89
 
        self.assertEquals(a.get_parent_ids(), 
 
124
                    %(ancestor,b.revno()), working_dir='a')
 
125
        self.assertEquals(a.get_parent_ids(),
90
126
                          [a.branch.last_revision(), b.last_revision()])
91
 
        self.check_file_contents('goodbye', 'quux')
92
 
        self.run_bzr('revert --no-backup')
93
 
        self.run_bzr('merge -r revno:%d:../b'%b.revno())
 
127
        self.check_file_contents('a/goodbye', 'quux')
 
128
        a_tree.revert(backups=False)
 
129
        self.run_bzr('merge -r revno:%d:../b'%b.revno(), working_dir='a')
94
130
        self.assertEquals(a.get_parent_ids(),
95
131
                          [a.branch.last_revision(), b.last_revision()])
96
132
        a_tip = a.commit('merged')
97
 
        self.run_bzr('merge ../b -r last:1')
 
133
        self.run_bzr('merge ../b -r last:1', working_dir='a')
98
134
        self.assertEqual([a_tip], a.get_parent_ids())
99
135
 
 
136
    def test_merge_defaults_to_reprocess(self):
 
137
        tree, other = self.create_conflicting_branches()
 
138
        # The default merge algorithm should enable 'reprocess' because
 
139
        # 'show-base' is not set
 
140
        self.run_bzr('merge ../other', working_dir='tree',
 
141
                     retcode=1)
 
142
        self.assertEqualDiff('a\n'
 
143
                             'B\n'
 
144
                             '<<<<<<< TREE\n'
 
145
                             'C\n'
 
146
                             '=======\n'
 
147
                             'D\n'
 
148
                             '>>>>>>> MERGE-SOURCE\n',
 
149
                             tree.get_file_text('f-id'))
 
150
 
 
151
    def test_merge_explicit_reprocess_show_base(self):
 
152
        tree, other = self.create_conflicting_branches()
 
153
        # Explicitly setting --reprocess, and --show-base is an error
 
154
        self.run_bzr_error(['Cannot do conflict reduction and show base'],
 
155
                           'merge ../other --reprocess --show-base',
 
156
                           working_dir='tree')
 
157
 
 
158
    def test_merge_override_reprocess(self):
 
159
        tree, other = self.create_conflicting_branches()
 
160
        # Explicitly disable reprocess
 
161
        self.run_bzr('merge ../other --no-reprocess', working_dir='tree',
 
162
                     retcode=1)
 
163
        self.assertEqualDiff('a\n'
 
164
                             '<<<<<<< TREE\n'
 
165
                             'B\n'
 
166
                             'C\n'
 
167
                             '=======\n'
 
168
                             'B\n'
 
169
                             'D\n'
 
170
                             '>>>>>>> MERGE-SOURCE\n',
 
171
                             tree.get_file_text('f-id'))
 
172
 
 
173
    def test_merge_override_show_base(self):
 
174
        tree, other = self.create_conflicting_branches()
 
175
        # Setting '--show-base' will auto-disable '--reprocess'
 
176
        self.run_bzr('merge ../other --show-base', working_dir='tree',
 
177
                     retcode=1)
 
178
        self.assertEqualDiff('a\n'
 
179
                             '<<<<<<< TREE\n'
 
180
                             'B\n'
 
181
                             'C\n'
 
182
                             '||||||| BASE-REVISION\n'
 
183
                             'b\n'
 
184
                             'c\n'
 
185
                             '=======\n'
 
186
                             'B\n'
 
187
                             'D\n'
 
188
                             '>>>>>>> MERGE-SOURCE\n',
 
189
                             tree.get_file_text('f-id'))
 
190
 
100
191
    def test_merge_with_missing_file(self):
101
192
        """Merge handles missing file conflicts"""
102
 
        os.mkdir('a')
103
 
        os.chdir('a')
104
 
        os.mkdir('sub')
105
 
        print >> file('sub/a.txt', 'wb'), "hello"
106
 
        print >> file('b.txt', 'wb'), "hello"
107
 
        print >> file('sub/c.txt', 'wb'), "hello"
108
 
        self.run_bzr('init')
109
 
        self.run_bzr('add')
110
 
        self.run_bzr(['commit', '-m', 'added a'])
111
 
        self.run_bzr('branch . ../b')
112
 
        print >> file('sub/a.txt', 'ab'), "there"
113
 
        print >> file('b.txt', 'ab'), "there"
114
 
        print >> file('sub/c.txt', 'ab'), "there"
115
 
        self.run_bzr(['commit', '-m', 'Added there'])
116
 
        os.unlink('sub/a.txt')
117
 
        os.unlink('sub/c.txt')
118
 
        os.rmdir('sub')
119
 
        os.unlink('b.txt')
120
 
        self.run_bzr(['commit', '-m', 'Removed a.txt'])
121
 
        os.chdir('../b')
122
 
        print >> file('sub/a.txt', 'ab'), "something"
123
 
        print >> file('b.txt', 'ab'), "something"
124
 
        print >> file('sub/c.txt', 'ab'), "something"
125
 
        self.run_bzr(['commit', '-m', 'Modified a.txt'])
126
 
        self.run_bzr('merge ../a/', retcode=1)
127
 
        self.assert_(os.path.exists('sub/a.txt.THIS'))
128
 
        self.assert_(os.path.exists('sub/a.txt.BASE'))
129
 
        os.chdir('../a')
130
 
        self.run_bzr('merge ../b/', retcode=1)
131
 
        self.assert_(os.path.exists('sub/a.txt.OTHER'))
132
 
        self.assert_(os.path.exists('sub/a.txt.BASE'))
 
193
        self.build_tree_contents([
 
194
            ('a/',),
 
195
            ('a/sub/',),
 
196
            ('a/sub/a.txt', 'hello\n'),
 
197
            ('a/b.txt', 'hello\n'),
 
198
            ('a/sub/c.txt', 'hello\n')])
 
199
        a_tree = self.make_branch_and_tree('a')
 
200
        a_tree.add(['sub', 'b.txt', 'sub/c.txt', 'sub/a.txt'])
 
201
        a_tree.commit(message='added a')
 
202
        b_tree = a_tree.bzrdir.sprout('b').open_workingtree()
 
203
        self.build_tree_contents([
 
204
            ('a/sub/a.txt', 'hello\nthere\n'),
 
205
            ('a/b.txt', 'hello\nthere\n'),
 
206
            ('a/sub/c.txt', 'hello\nthere\n')])
 
207
        a_tree.commit(message='Added there')
 
208
        os.remove('a/sub/a.txt')
 
209
        os.remove('a/sub/c.txt')
 
210
        os.rmdir('a/sub')
 
211
        os.remove('a/b.txt')
 
212
        a_tree.commit(message='Removed a.txt')
 
213
        self.build_tree_contents([
 
214
            ('b/sub/a.txt', 'hello\nsomething\n'),
 
215
            ('b/b.txt', 'hello\nsomething\n'),
 
216
            ('b/sub/c.txt', 'hello\nsomething\n')])
 
217
        b_tree.commit(message='Modified a.txt')
 
218
 
 
219
        self.run_bzr('merge ../a/', retcode=1, working_dir='b')
 
220
        self.assertPathExists('b/sub/a.txt.THIS')
 
221
        self.assertPathExists('b/sub/a.txt.BASE')
 
222
 
 
223
        self.run_bzr('merge ../b/', retcode=1, working_dir='a')
 
224
        self.assertPathExists('a/sub/a.txt.OTHER')
 
225
        self.assertPathExists('a/sub/a.txt.BASE')
 
226
 
 
227
    def test_conflict_leaves_base_this_other_files(self):
 
228
        tree, other = self.create_conflicting_branches()
 
229
        self.run_bzr('merge ../other', working_dir='tree',
 
230
                     retcode=1)
 
231
        self.assertFileEqual('a\nb\nc\n', 'tree/fname.BASE')
 
232
        self.assertFileEqual('a\nB\nD\n', 'tree/fname.OTHER')
 
233
        self.assertFileEqual('a\nB\nC\n', 'tree/fname.THIS')
 
234
 
 
235
    def test_weave_conflict_leaves_base_this_other_files(self):
 
236
        tree, other = self.create_conflicting_branches()
 
237
        self.run_bzr('merge ../other --weave', working_dir='tree',
 
238
                     retcode=1)
 
239
        self.assertFileEqual('a\nb\nc\n', 'tree/fname.BASE')
 
240
        self.assertFileEqual('a\nB\nD\n', 'tree/fname.OTHER')
 
241
        self.assertFileEqual('a\nB\nC\n', 'tree/fname.THIS')
133
242
 
134
243
    def test_merge_remember(self):
135
 
        """Merge changes from one branch to another and test parent location."""
 
244
        """Merge changes from one branch to another, test submit location."""
136
245
        tree_a = self.make_branch_and_tree('branch_a')
137
246
        branch_a = tree_a.branch
138
247
        self.build_tree(['branch_a/a'])
153
262
        branch_b.set_parent(None)
154
263
        self.assertEqual(None, branch_b.get_parent())
155
264
        # test merge for failure without parent set
156
 
        os.chdir('branch_b')
157
 
        out = self.run_bzr('merge', retcode=3)
 
265
        out = self.run_bzr('merge', retcode=3, working_dir='branch_b')
158
266
        self.assertEquals(out,
159
267
                ('','bzr: ERROR: No location specified or remembered\n'))
160
 
        # test implicit --remember when no parent set, this merge conflicts
161
 
        self.build_tree(['d'])
 
268
 
 
269
        # test uncommitted changes
 
270
        self.build_tree(['branch_b/d'])
162
271
        tree_b.add('d')
163
 
        out = self.run_bzr('merge ../branch_a', retcode=3)
164
 
        self.assertEquals(out,
165
 
                ('','bzr: ERROR: Working tree has uncommitted changes.\n'))
166
 
        self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
167
 
        # test implicit --remember after resolving conflict
 
272
        self.run_bzr_error(['Working tree ".*" has uncommitted changes'],
 
273
                           'merge', working_dir='branch_b')
 
274
 
 
275
        # merge should now pass and implicitly remember merge location
168
276
        tree_b.commit('commit d')
169
 
        out, err = self.run_bzr('merge')
170
 
        
 
277
        out, err = self.run_bzr('merge ../branch_a', working_dir='branch_b')
 
278
 
171
279
        base = urlutils.local_path_from_url(branch_a.base)
172
 
        self.assertEquals(out, 'Merging from remembered location %s\n' % (base,))
173
 
        self.assertEquals(err, '+N  b\nAll changes applied successfully.\n')
174
 
        self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
 
280
        self.assertEndsWith(err, '+N  b\nAll changes applied successfully.\n')
 
281
        # re-open branch as external run_bzr modified it
 
282
        branch_b = branch_b.bzrdir.open_branch()
 
283
        self.assertEquals(osutils.abspath(branch_b.get_submit_branch()),
 
284
                          osutils.abspath(parent))
 
285
        # test implicit --remember when committing new file
 
286
        self.build_tree(['branch_b/e'])
 
287
        tree_b.add('e')
 
288
        tree_b.commit('commit e')
 
289
        out, err = self.run_bzr('merge', working_dir='branch_b')
 
290
        self.assertStartsWith(
 
291
            err, 'Merging from remembered submit location %s\n' % (base,))
175
292
        # re-open tree as external run_bzr modified it
176
293
        tree_b = branch_b.bzrdir.open_workingtree()
177
294
        tree_b.commit('merge branch_a')
178
295
        # test explicit --remember
179
 
        out, err = self.run_bzr('merge ../branch_c --remember')
 
296
        out, err = self.run_bzr('merge ../branch_c --remember',
 
297
                                working_dir='branch_b')
180
298
        self.assertEquals(out, '')
181
299
        self.assertEquals(err, '+N  c\nAll changes applied successfully.\n')
182
 
        self.assertEquals(abspath(branch_b.get_parent()),
183
 
                          abspath(branch_c.bzrdir.root_transport.base))
 
300
        # re-open branch as external run_bzr modified it
 
301
        branch_b = branch_b.bzrdir.open_branch()
 
302
        self.assertEquals(osutils.abspath(branch_b.get_submit_branch()),
 
303
                          osutils.abspath(branch_c.bzrdir.root_transport.base))
184
304
        # re-open tree as external run_bzr modified it
185
305
        tree_b = branch_b.bzrdir.open_workingtree()
186
306
        tree_b.commit('merge branch_c')
188
308
    def test_merge_bundle(self):
189
309
        from bzrlib.testament import Testament
190
310
        tree_a = self.make_branch_and_tree('branch_a')
191
 
        f = file('branch_a/a', 'wb')
192
 
        f.write('hello')
193
 
        f.close()
 
311
        self.build_tree_contents([('branch_a/a', 'hello')])
194
312
        tree_a.add('a')
195
313
        tree_a.commit('message')
196
314
 
197
315
        tree_b = tree_a.bzrdir.sprout('branch_b').open_workingtree()
198
 
        f = file('branch_a/a', 'wb')
199
 
        f.write('hey there')
200
 
        f.close()
 
316
        self.build_tree_contents([('branch_a/a', 'hey there')])
201
317
        tree_a.commit('message')
202
318
 
203
 
        f = file('branch_b/a', 'wb')
204
 
        f.write('goodbye')
205
 
        f.close()
 
319
        self.build_tree_contents([('branch_b/a', 'goodbye')])
206
320
        tree_b.commit('message')
207
 
        os.chdir('branch_b')
208
 
        self.run_bzr('bundle ../branch_a -o ../bundle')
209
 
        os.chdir('../branch_a')
210
 
        self.run_bzr('merge ../bundle', retcode=1)
 
321
        self.run_bzr('bundle ../branch_a -o ../bundle', working_dir='branch_b')
 
322
        self.run_bzr('merge ../bundle', retcode=1, working_dir='branch_a')
211
323
        testament_a = Testament.from_revision(tree_a.branch.repository,
212
324
                                              tree_b.get_parent_ids()[0])
213
325
        testament_b = Testament.from_revision(tree_b.branch.repository,
214
326
                                              tree_b.get_parent_ids()[0])
215
327
        self.assertEqualDiff(testament_a.as_text(),
216
328
                         testament_b.as_text())
217
 
        tree_a.set_conflicts(ConflictList())
 
329
        tree_a.set_conflicts(conflicts.ConflictList())
218
330
        tree_a.commit('message')
219
331
        # it is legal to attempt to merge an already-merged bundle
220
 
        output = self.run_bzr('merge ../bundle')[1]
 
332
        err = self.run_bzr('merge ../bundle', working_dir='branch_a')[1]
221
333
        # but it does nothing
222
334
        self.assertFalse(tree_a.changes_from(tree_a.basis_tree()).has_changed())
223
 
        self.assertEqual('Nothing to do.\n', output)
 
335
        self.assertEqual('Nothing to do.\n', err)
224
336
 
225
337
    def test_merge_uncommitted(self):
226
338
        """Check that merge --uncommitted behaves properly"""
229
341
        tree_a.add(['file_1', 'file_2'])
230
342
        tree_a.commit('commit 1')
231
343
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
232
 
        self.failUnlessExists('b/file_1')
 
344
        self.assertPathExists('b/file_1')
233
345
        tree_a.rename_one('file_1', 'file_i')
234
346
        tree_a.commit('commit 2')
235
347
        tree_a.rename_one('file_2', 'file_ii')
236
 
        ## os.chdir('b')
237
348
        self.run_bzr('merge a --uncommitted -d b')
238
 
        self.failUnlessExists('b/file_1')
239
 
        self.failUnlessExists('b/file_ii')
240
 
        tree_b.revert([])
 
349
        self.assertPathExists('b/file_1')
 
350
        self.assertPathExists('b/file_ii')
 
351
        tree_b.revert()
241
352
        self.run_bzr_error(('Cannot use --uncommitted and --revision',),
242
353
                           'merge /a --uncommitted -r1 -d b')
243
354
 
244
 
    def pullable_branch(self):
245
 
        os.mkdir('a')
246
 
        os.chdir('a')
247
 
        self.example_branch()
248
 
        os.chdir('..')
249
 
        self.run_bzr('branch a b')
250
 
        os.chdir('b')
251
 
        file('goodbye', 'wt').write('quux')
252
 
        self.run_bzr(['commit', '-m', "mode u's are always good"])
253
 
        os.chdir('../a')
 
355
    def test_merge_uncommitted_file(self):
 
356
        """It should be possible to merge changes from a single file."""
 
357
        tree_a = self.make_branch_and_tree('tree_a')
 
358
        tree_a.commit('initial commit')
 
359
        tree_a.bzrdir.sprout('tree_b')
 
360
        self.build_tree(['tree_a/file1', 'tree_a/file2'])
 
361
        tree_a.add(['file1', 'file2'])
 
362
        self.run_bzr(['merge', '--uncommitted', '../tree_a/file1'],
 
363
                     working_dir='tree_b')
 
364
        self.assertPathExists('tree_b/file1')
 
365
        self.assertPathDoesNotExist('tree_b/file2')
 
366
 
 
367
    def test_merge_nonexistent_file(self):
 
368
        """It should not be possible to merge changes from a file which
 
369
        does not exist."""
 
370
        tree_a = self.make_branch_and_tree('tree_a')
 
371
        self.build_tree_contents([('tree_a/file', 'bar\n')])
 
372
        tree_a.add(['file'])
 
373
        tree_a.commit('commit 1')
 
374
        self.run_bzr_error(('Path\(s\) do not exist: non/existing',),
 
375
                           ['merge', 'non/existing'], working_dir='tree_a')
254
376
 
255
377
    def pullable_branch(self):
256
378
        tree_a = self.make_branch_and_tree('a')
257
 
        self.build_tree(['a/file'])
 
379
        self.build_tree_contents([('a/file', 'bar\n')])
258
380
        tree_a.add(['file'])
259
381
        self.id1 = tree_a.commit('commit 1')
260
 
        
 
382
 
261
383
        tree_b = self.make_branch_and_tree('b')
262
384
        tree_b.pull(tree_a.branch)
263
 
        file('b/file', 'wb').write('foo')
 
385
        self.build_tree_contents([('b/file', 'foo\n')])
264
386
        self.id2 = tree_b.commit('commit 2')
265
387
 
266
388
    def test_merge_pull(self):
267
389
        self.pullable_branch()
268
 
        os.chdir('a')
269
 
        (out, err) = self.run_bzr('merge --pull ../b')
 
390
        (out, err) = self.run_bzr('merge --pull ../b', working_dir='a')
270
391
        self.assertContainsRe(out, 'Now on revision 2\\.')
271
 
        tree_a = WorkingTree.open('.')
 
392
        tree_a = workingtree.WorkingTree.open('a')
272
393
        self.assertEqual([self.id2], tree_a.get_parent_ids())
273
394
 
 
395
    def test_merge_pull_preview(self):
 
396
        self.pullable_branch()
 
397
        (out, err) = self.run_bzr('merge --pull --preview -d a b')
 
398
        self.assertThat(out, matchers.DocTestMatches(
 
399
"""=== modified file 'file'
 
400
--- file\t...
 
401
+++ file\t...
 
402
@@ -1,1 +1,1 @@
 
403
-bar
 
404
+foo
 
405
 
 
406
""", doctest.ELLIPSIS | doctest.REPORT_UDIFF))
 
407
        tree_a = workingtree.WorkingTree.open('a')
 
408
        self.assertEqual([self.id1], tree_a.get_parent_ids())
 
409
 
274
410
    def test_merge_kind_change(self):
275
411
        tree_a = self.make_branch_and_tree('tree_a')
276
412
        self.build_tree_contents([('tree_a/file', 'content_1')])
280
416
        os.unlink('tree_a/file')
281
417
        self.build_tree(['tree_a/file/'])
282
418
        tree_a.commit('changed file to directory')
283
 
        os.chdir('tree_b')
284
 
        self.run_bzr('merge ../tree_a')
285
 
        self.assertEqual('directory', file_kind('file'))
286
 
        tree_b.revert([])
287
 
        self.assertEqual('file', file_kind('file'))
288
 
        self.build_tree_contents([('file', 'content_2')])
 
419
        self.run_bzr('merge ../tree_a', working_dir='tree_b')
 
420
        self.assertEqual('directory', osutils.file_kind('tree_b/file'))
 
421
        tree_b.revert()
 
422
        self.assertEqual('file', osutils.file_kind('tree_b/file'))
 
423
        self.build_tree_contents([('tree_b/file', 'content_2')])
289
424
        tree_b.commit('content change')
290
 
        self.run_bzr('merge ../tree_a', retcode=1)
 
425
        self.run_bzr('merge ../tree_a', retcode=1, working_dir='tree_b')
291
426
        self.assertEqual(tree_b.conflicts(),
292
 
                         [ContentsConflict('file', file_id='file-id')])
 
427
                         [conflicts.ContentsConflict('file',
 
428
                                                     file_id='file-id')])
293
429
 
294
430
    def test_directive_cherrypick(self):
295
431
        source = self.make_branch_and_tree('source')
 
432
        source.commit("nothing")
 
433
        # see https://bugs.launchpad.net/bzr/+bug/409688 - trying to
 
434
        # cherrypick from one branch into another unrelated branch with a
 
435
        # different root id will give shape conflicts.  as a workaround we
 
436
        # make sure they share the same root id.
 
437
        target = source.bzrdir.sprout('target').open_workingtree()
296
438
        self.build_tree(['source/a'])
297
439
        source.add('a')
298
440
        source.commit('Added a', rev_id='rev1')
299
441
        self.build_tree(['source/b'])
300
442
        source.add('b')
301
443
        source.commit('Added b', rev_id='rev2')
302
 
        target = self.make_branch_and_tree('target')
303
444
        target.commit('empty commit')
304
445
        self.write_directive('directive', source.branch, 'target', 'rev2',
305
446
                             'rev1')
306
 
        self.run_bzr('merge -d target directive')
307
 
        self.failIfExists('target/a')
308
 
        self.failUnlessExists('target/b')
 
447
        out, err = self.run_bzr('merge -d target directive')
 
448
        self.assertPathDoesNotExist('target/a')
 
449
        self.assertPathExists('target/b')
 
450
        self.assertContainsRe(err, 'Performing cherrypick')
309
451
 
310
452
    def write_directive(self, filename, source, target, revision_id,
311
453
                        base_revision_id=None, mangle_patch=False):
326
468
        self.write_directive('directive', source.branch, 'target', 'rev1')
327
469
        err = self.run_bzr('merge -d target directive')[1]
328
470
        self.assertNotContainsRe(err, 'Preview patch does not match changes')
329
 
        target.revert([])
 
471
        target.revert()
330
472
        self.write_directive('directive', source.branch, 'target', 'rev1',
331
473
                             mangle_patch=True)
332
474
        err = self.run_bzr('merge -d target directive')[1]
345
487
        branch_b.add('file2')
346
488
        branch_b.commit('added file2', rev_id='rev2b')
347
489
        branch_b.merge_from_branch(branch_a.branch)
348
 
        self.failUnlessExists('branch_b/file1')
 
490
        self.assertPathExists('branch_b/file1')
349
491
        branch_b.commit('merged branch_a', rev_id='rev3b')
350
492
 
351
493
        # It works if the revid has an interger revno
352
494
        self.run_bzr('merge -d target -r revid:rev2a branch_a')
353
 
        self.failUnlessExists('target/file1')
354
 
        self.failIfExists('target/file2')
355
 
        target.revert([])
 
495
        self.assertPathExists('target/file1')
 
496
        self.assertPathDoesNotExist('target/file2')
 
497
        target.revert()
356
498
 
357
499
        # It should work if the revid has no integer revno
358
500
        self.run_bzr('merge -d target -r revid:rev2a branch_b')
359
 
        self.failUnlessExists('target/file1')
360
 
        self.failIfExists('target/file2')
 
501
        self.assertPathExists('target/file1')
 
502
        self.assertPathDoesNotExist('target/file2')
 
503
 
 
504
    def assertDirectoryContent(self, directory, entries, message=''):
 
505
        """Assert whether entries (file or directories) exist in a directory.
 
506
 
 
507
        It also checks that there are no extra entries.
 
508
        """
 
509
        ondisk = os.listdir(directory)
 
510
        if set(ondisk) == set(entries):
 
511
            return
 
512
        if message:
 
513
            message += '\n'
 
514
        raise AssertionError(
 
515
            '%s"%s" directory content is different:\na = %s\nb = %s\n'
 
516
            % (message, directory, sorted(entries), sorted(ondisk)))
 
517
 
 
518
    def test_cherrypicking_merge(self):
 
519
        # make source branch
 
520
        source = self.make_branch_and_tree('source')
 
521
        for f in ('a', 'b', 'c', 'd'):
 
522
            self.build_tree(['source/'+f])
 
523
            source.add(f)
 
524
            source.commit('added '+f, rev_id='rev_'+f)
 
525
        # target branch
 
526
        target = source.bzrdir.sprout('target', 'rev_a').open_workingtree()
 
527
        self.assertDirectoryContent('target', ['.bzr', 'a'])
 
528
        # pick 1 revision
 
529
        self.run_bzr('merge -d target -r revid:rev_b..revid:rev_c source')
 
530
        self.assertDirectoryContent('target', ['.bzr', 'a', 'c'])
 
531
        target.revert()
 
532
        # pick 2 revisions
 
533
        self.run_bzr('merge -d target -r revid:rev_b..revid:rev_d source')
 
534
        self.assertDirectoryContent('target', ['.bzr', 'a', 'c', 'd'])
 
535
        target.revert()
 
536
        # pick 1 revision with option --changes
 
537
        self.run_bzr('merge -d target -c revid:rev_d source')
 
538
        self.assertDirectoryContent('target', ['.bzr', 'a', 'd'])
 
539
 
 
540
    def test_merge_criss_cross(self):
 
541
        tree_a = self.make_branch_and_tree('a')
 
542
        tree_a.commit('', rev_id='rev1')
 
543
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
 
544
        tree_a.commit('', rev_id='rev2a')
 
545
        tree_b.commit('', rev_id='rev2b')
 
546
        tree_a.merge_from_branch(tree_b.branch)
 
547
        tree_b.merge_from_branch(tree_a.branch)
 
548
        tree_a.commit('', rev_id='rev3a')
 
549
        tree_b.commit('', rev_id='rev3b')
 
550
        graph = tree_a.branch.repository.get_graph(tree_b.branch.repository)
 
551
        out, err = self.run_bzr(['merge', '-d', 'a', 'b'])
 
552
        self.assertContainsRe(err, 'Warning: criss-cross merge encountered.')
 
553
 
 
554
    def test_merge_from_submit(self):
 
555
        tree_a = self.make_branch_and_tree('a')
 
556
        tree_a.commit('test')
 
557
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
 
558
        tree_c = tree_a.bzrdir.sprout('c').open_workingtree()
 
559
        out, err = self.run_bzr(['merge', '-d', 'c'])
 
560
        self.assertContainsRe(err,
 
561
                              'Merging from remembered parent location .*a\/')
 
562
        tree_c.branch.lock_write()
 
563
        try:
 
564
            tree_c.branch.set_submit_branch(tree_b.bzrdir.root_transport.base)
 
565
        finally:
 
566
            tree_c.branch.unlock()
 
567
        out, err = self.run_bzr(['merge', '-d', 'c'])
 
568
        self.assertContainsRe(err,
 
569
                              'Merging from remembered submit location .*b\/')
 
570
 
 
571
    def test_remember_sets_submit(self):
 
572
        tree_a = self.make_branch_and_tree('a')
 
573
        tree_a.commit('rev1')
 
574
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
 
575
        self.assertIs(tree_b.branch.get_submit_branch(), None)
 
576
 
 
577
        # Remember should not happen if using default from parent
 
578
        out, err = self.run_bzr(['merge', '-d', 'b'])
 
579
        refreshed = workingtree.WorkingTree.open('b')
 
580
        self.assertIs(refreshed.branch.get_submit_branch(), None)
 
581
 
 
582
        # Remember should happen if user supplies location
 
583
        out, err = self.run_bzr(['merge', '-d', 'b', 'a'])
 
584
        refreshed = workingtree.WorkingTree.open('b')
 
585
        self.assertEqual(refreshed.branch.get_submit_branch(),
 
586
                         tree_a.bzrdir.root_transport.base)
 
587
 
 
588
    def test_no_remember_dont_set_submit(self):
 
589
        tree_a = self.make_branch_and_tree('a')
 
590
        self.build_tree_contents([('a/file', "a\n")])
 
591
        tree_a.add('file')
 
592
        tree_a.commit('rev1')
 
593
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
 
594
        self.assertIs(tree_b.branch.get_submit_branch(), None)
 
595
 
 
596
        # Remember should not happen if using default from parent
 
597
        out, err = self.run_bzr(['merge', '-d', 'b', '--no-remember'])
 
598
        self.assertEquals(None, tree_b.branch.get_submit_branch())
 
599
 
 
600
        # Remember should not happen if user supplies location but ask for not
 
601
        # remembering it
 
602
        out, err = self.run_bzr(['merge', '-d', 'b', '--no-remember', 'a'])
 
603
        self.assertEqual(None, tree_b.branch.get_submit_branch())
 
604
 
 
605
    def test_weave_cherrypick(self):
 
606
        this_tree = self.make_branch_and_tree('this')
 
607
        self.build_tree_contents([('this/file', "a\n")])
 
608
        this_tree.add('file')
 
609
        this_tree.commit('rev1')
 
610
        other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
 
611
        self.build_tree_contents([('other/file', "a\nb\n")])
 
612
        other_tree.commit('rev2b')
 
613
        self.build_tree_contents([('other/file', "c\na\nb\n")])
 
614
        other_tree.commit('rev3b')
 
615
        self.run_bzr('merge --weave -d this other -r -2..-1')
 
616
        self.assertFileEqual('c\na\n', 'this/file')
 
617
 
 
618
    def test_lca_merge_criss_cross(self):
 
619
        tree_a = self.make_branch_and_tree('a')
 
620
        self.build_tree_contents([('a/file', 'base-contents\n')])
 
621
        tree_a.add('file')
 
622
        tree_a.commit('', rev_id='rev1')
 
623
        tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
 
624
        self.build_tree_contents([('a/file',
 
625
                                   'base-contents\nthis-contents\n')])
 
626
        tree_a.commit('', rev_id='rev2a')
 
627
        self.build_tree_contents([('b/file',
 
628
                                   'base-contents\nother-contents\n')])
 
629
        tree_b.commit('', rev_id='rev2b')
 
630
        tree_a.merge_from_branch(tree_b.branch)
 
631
        self.build_tree_contents([('a/file',
 
632
                                   'base-contents\nthis-contents\n')])
 
633
        tree_a.set_conflicts(conflicts.ConflictList())
 
634
        tree_b.merge_from_branch(tree_a.branch)
 
635
        self.build_tree_contents([('b/file',
 
636
                                   'base-contents\nother-contents\n')])
 
637
        tree_b.set_conflicts(conflicts.ConflictList())
 
638
        tree_a.commit('', rev_id='rev3a')
 
639
        tree_b.commit('', rev_id='rev3b')
 
640
        out, err = self.run_bzr(['merge', '-d', 'a', 'b', '--lca'], retcode=1)
 
641
        self.assertFileEqual('base-contents\n<<<<<<< TREE\nthis-contents\n'
 
642
                             '=======\nother-contents\n>>>>>>> MERGE-SOURCE\n',
 
643
                             'a/file')
 
644
 
 
645
    def test_merge_preview(self):
 
646
        this_tree = self.make_branch_and_tree('this')
 
647
        this_tree.commit('rev1')
 
648
        other_tree = this_tree.bzrdir.sprout('other').open_workingtree()
 
649
        self.build_tree_contents([('other/file', 'new line')])
 
650
        other_tree.add('file')
 
651
        other_tree.commit('rev2a')
 
652
        this_tree.commit('rev2b')
 
653
        out, err = self.run_bzr(['merge', '-d', 'this', 'other', '--preview'])
 
654
        self.assertContainsRe(out, '\+new line')
 
655
        self.assertNotContainsRe(err, '\+N  file\n')
 
656
        this_tree.lock_read()
 
657
        self.addCleanup(this_tree.unlock)
 
658
        self.assertEqual([],
 
659
                         list(this_tree.iter_changes(this_tree.basis_tree())))
 
660
 
 
661
    def test_merge_missing_second_revision_spec(self):
 
662
        """Merge uses branch basis when the second revision is unspecified."""
 
663
        this = self.make_branch_and_tree('this')
 
664
        this.commit('rev1')
 
665
        other = self.make_branch_and_tree('other')
 
666
        self.build_tree(['other/other_file'])
 
667
        other.add('other_file')
 
668
        other.commit('rev1b')
 
669
        self.run_bzr('merge -d this other -r0..')
 
670
        self.assertPathExists('this/other_file')
 
671
 
 
672
    def test_merge_interactive_unlocks_branch(self):
 
673
        this = self.make_branch_and_tree('this')
 
674
        this.commit('empty commit')
 
675
        other = this.bzrdir.sprout('other').open_workingtree()
 
676
        other.commit('empty commit 2')
 
677
        self.run_bzr('merge -i -d this other')
 
678
        this.lock_write()
 
679
        this.unlock()
 
680
 
 
681
    def test_merge_fetches_tags(self):
 
682
        """Tags are updated by merge, and revisions named in those tags are
 
683
        fetched.
 
684
        """
 
685
        # Make a source, sprout a target off it
 
686
        builder = self.make_branch_builder('source')
 
687
        builder.build_commit(message="Rev 1", rev_id='rev-1')
 
688
        source = builder.get_branch()
 
689
        target_bzrdir = source.bzrdir.sprout('target')
 
690
        # Add a non-ancestry tag to source
 
691
        builder.build_commit(message="Rev 2a", rev_id='rev-2a')
 
692
        source.tags.set_tag('tag-a', 'rev-2a')
 
693
        source.set_last_revision_info(1, 'rev-1')
 
694
        source.get_config_stack().set('branch.fetch_tags', True)
 
695
        builder.build_commit(message="Rev 2b", rev_id='rev-2b')
 
696
        # Merge from source
 
697
        self.run_bzr('merge -d target source')
 
698
        target = target_bzrdir.open_branch()
 
699
        # The tag is present, and so is its revision.
 
700
        self.assertEqual('rev-2a', target.tags.lookup_tag('tag-a'))
 
701
        target.repository.get_revision('rev-2a')
 
702
 
 
703
 
 
704
class TestMergeRevisionRange(tests.TestCaseWithTransport):
 
705
 
 
706
    scenarios = (('whole-tree', dict(context='.')),
 
707
                 ('file-only', dict(context='a')))
 
708
 
 
709
    def setUp(self):
 
710
        super(TestMergeRevisionRange, self).setUp()
 
711
        self.tree = self.make_branch_and_tree(".")
 
712
        self.tree.commit('initial commit')
 
713
        for f in ("a", "b"):
 
714
            self.build_tree([f])
 
715
            self.tree.add(f)
 
716
            self.tree.commit("added " + f)
 
717
 
 
718
    def test_merge_reversed_revision_range(self):
 
719
        self.run_bzr("merge -r 2..1 " + self.context)
 
720
        self.assertPathDoesNotExist("a")
 
721
        self.assertPathExists("b")
 
722
 
 
723
 
 
724
class TestMergeScript(script.TestCaseWithTransportAndScript):
 
725
    def test_merge_empty_branch(self):
 
726
        source = self.make_branch_and_tree('source')
 
727
        self.build_tree(['source/a'])
 
728
        source.add('a')
 
729
        source.commit('Added a', rev_id='rev1')
 
730
        target = self.make_branch_and_tree('target')
 
731
        self.run_script("""\
 
732
$ bzr merge -d target source
 
733
2>bzr: ERROR: Merging into empty branches not currently supported, https://bugs.launchpad.net/bzr/+bug/308562
 
734
""")
 
735
 
 
736
class TestMergeForce(tests.TestCaseWithTransport):
 
737
 
 
738
    def setUp(self):
 
739
        super(TestMergeForce, self).setUp()
 
740
        self.tree_a = self.make_branch_and_tree('a')
 
741
        self.build_tree(['a/foo'])
 
742
        self.tree_a.add(['foo'])
 
743
        self.tree_a.commit('add file')
 
744
        self.tree_b = self.tree_a.bzrdir.sprout('b').open_workingtree()
 
745
        self.build_tree_contents([('a/foo', 'change 1')])
 
746
        self.tree_a.commit('change file')
 
747
        self.tree_b.merge_from_branch(self.tree_a.branch)
 
748
 
 
749
    def test_merge_force(self):
 
750
        self.tree_a.commit('empty change to allow merge to run')
 
751
        # Second merge on top of the uncommitted one
 
752
        self.run_bzr(['merge', '../a', '--force'], working_dir='b')
 
753
 
 
754
 
 
755
    def test_merge_with_uncommitted_changes(self):
 
756
        self.run_bzr_error(['Working tree .* has uncommitted changes'],
 
757
                           ['merge', '../a'], working_dir='b')
 
758
 
 
759
    def test_merge_with_pending_merges(self):
 
760
        # Revert the changes keeping the pending merge
 
761
        self.run_bzr(['revert', 'b'])
 
762
        self.run_bzr_error(['Working tree .* has uncommitted changes'],
 
763
                           ['merge', '../a'], working_dir='b')