1
# Copyright (C) 2004, 2005 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
from bzrlib.tests import TestCaseInTempDir, TestCase
19
from bzrlib.merge3 import Merge3
20
from bzrlib.errors import CantReprocessAndShowBase, BinaryFile
23
from cStringIO import StringIO
24
return StringIO(t).readlines()
26
############################################################
27
# test case data from the gnu diffutils manual
29
TZU = split_lines(""" The Nameless is the origin of Heaven and Earth;
30
The named is the mother of all things.
32
Therefore let there always be non-being,
33
so we may see their subtlety,
34
And let there always be being,
35
so we may see their outcome.
37
But after they are produced,
38
they have different names.
39
They both may be called deep and profound.
40
Deeper and more profound,
41
The door of all subtleties!
44
LAO = split_lines(""" The Way that can be told of is not the eternal Way;
45
The name that can be named is not the eternal name.
46
The Nameless is the origin of Heaven and Earth;
47
The Named is the mother of all things.
48
Therefore let there always be non-being,
49
so we may see their subtlety,
50
And let there always be being,
51
so we may see their outcome.
53
But after they are produced,
54
they have different names.
58
TAO = split_lines(""" The Way that can be told of is not the eternal Way;
59
The name that can be named is not the eternal name.
60
The Nameless is the origin of Heaven and Earth;
61
The named is the mother of all things.
63
Therefore let there always be non-being,
64
so we may see their subtlety,
65
And let there always be being,
66
so we may see their result.
68
But after they are produced,
69
they have different names.
71
-- The Way of Lao-Tzu, tr. Wing-tsit Chan
75
MERGED_RESULT = split_lines(""" The Way that can be told of is not the eternal Way;
76
The name that can be named is not the eternal name.
77
The Nameless is the origin of Heaven and Earth;
78
The Named is the mother of all things.
79
Therefore let there always be non-being,
80
so we may see their subtlety,
81
And let there always be being,
82
so we may see their result.
84
But after they are produced,
85
they have different names.
89
-- The Way of Lao-Tzu, tr. Wing-tsit Chan
94
class TestMerge3(TestCase):
96
def test_no_changes(self):
97
"""No conflicts because nothing changed"""
98
m3 = Merge3(['aaa', 'bbb'],
102
self.assertEquals(m3.find_unconflicted(),
105
self.assertEquals(list(m3.find_sync_regions()),
111
self.assertEquals(list(m3.merge_regions()),
112
[('unchanged', 0, 2)])
114
self.assertEquals(list(m3.merge_groups()),
115
[('unchanged', ['aaa', 'bbb'])])
117
def test_front_insert(self):
119
['aaa', 'bbb', 'zz'],
122
# todo: should use a sentinal at end as from get_matching_blocks
123
# to match without zz
124
self.assertEquals(list(m3.find_sync_regions()),
128
self.assertEquals(list(m3.merge_regions()),
130
('unchanged', 0, 1)])
132
self.assertEquals(list(m3.merge_groups()),
133
[('a', ['aaa', 'bbb']),
134
('unchanged', ['zz'])])
136
def test_null_insert(self):
140
# todo: should use a sentinal at end as from get_matching_blocks
141
# to match without zz
142
self.assertEquals(list(m3.find_sync_regions()),
145
self.assertEquals(list(m3.merge_regions()),
148
self.assertEquals(list(m3.merge_lines()),
151
def test_no_conflicts(self):
152
"""No conflicts because only one side changed"""
153
m3 = Merge3(['aaa', 'bbb'],
154
['aaa', '111', 'bbb'],
157
self.assertEquals(m3.find_unconflicted(),
160
self.assertEquals(list(m3.find_sync_regions()),
165
self.assertEquals(list(m3.merge_regions()),
166
[('unchanged', 0, 1),
168
('unchanged', 1, 2),])
170
def test_append_a(self):
171
m3 = Merge3(['aaa\n', 'bbb\n'],
172
['aaa\n', 'bbb\n', '222\n'],
175
self.assertEquals(''.join(m3.merge_lines()),
178
def test_append_b(self):
179
m3 = Merge3(['aaa\n', 'bbb\n'],
181
['aaa\n', 'bbb\n', '222\n'])
183
self.assertEquals(''.join(m3.merge_lines()),
186
def test_append_agreement(self):
187
m3 = Merge3(['aaa\n', 'bbb\n'],
188
['aaa\n', 'bbb\n', '222\n'],
189
['aaa\n', 'bbb\n', '222\n'])
191
self.assertEquals(''.join(m3.merge_lines()),
194
def test_append_clash(self):
195
m3 = Merge3(['aaa\n', 'bbb\n'],
196
['aaa\n', 'bbb\n', '222\n'],
197
['aaa\n', 'bbb\n', '333\n'])
199
ml = m3.merge_lines(name_a='a',
204
self.assertEquals(''.join(ml),
215
def test_insert_agreement(self):
216
m3 = Merge3(['aaa\n', 'bbb\n'],
217
['aaa\n', '222\n', 'bbb\n'],
218
['aaa\n', '222\n', 'bbb\n'])
220
ml = m3.merge_lines(name_a='a',
225
self.assertEquals(''.join(ml), 'aaa\n222\nbbb\n')
228
def test_insert_clash(self):
229
"""Both try to insert lines in the same place."""
230
m3 = Merge3(['aaa\n', 'bbb\n'],
231
['aaa\n', '111\n', 'bbb\n'],
232
['aaa\n', '222\n', 'bbb\n'])
234
self.assertEquals(m3.find_unconflicted(),
237
self.assertEquals(list(m3.find_sync_regions()),
242
self.assertEquals(list(m3.merge_regions()),
244
('conflict', 1,1, 1,2, 1,2),
247
self.assertEquals(list(m3.merge_groups()),
248
[('unchanged', ['aaa\n']),
249
('conflict', [], ['111\n'], ['222\n']),
250
('unchanged', ['bbb\n']),
253
ml = m3.merge_lines(name_a='a',
258
self.assertEquals(''.join(ml),
268
def test_replace_clash(self):
269
"""Both try to insert lines in the same place."""
270
m3 = Merge3(['aaa', '000', 'bbb'],
271
['aaa', '111', 'bbb'],
272
['aaa', '222', 'bbb'])
274
self.assertEquals(m3.find_unconflicted(),
277
self.assertEquals(list(m3.find_sync_regions()),
282
def test_replace_multi(self):
283
"""Replacement with regions of different size."""
284
m3 = Merge3(['aaa', '000', '000', 'bbb'],
285
['aaa', '111', '111', '111', 'bbb'],
286
['aaa', '222', '222', '222', '222', 'bbb'])
288
self.assertEquals(m3.find_unconflicted(),
292
self.assertEquals(list(m3.find_sync_regions()),
297
def test_merge_poem(self):
298
"""Test case from diff3 manual"""
299
m3 = Merge3(TZU, LAO, TAO)
300
ml = list(m3.merge_lines('LAO', 'TAO'))
301
self.log('merge result:')
302
self.log(''.join(ml))
303
self.assertEquals(ml, MERGED_RESULT)
305
def test_minimal_conflicts_common(self):
307
base_text = ("a\n" * 20).splitlines(True)
308
this_text = ("a\n"*10+"b\n" * 10).splitlines(True)
309
other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True)
310
m3 = Merge3(base_text, other_text, this_text)
311
m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
312
merged_text = "".join(list(m_lines))
313
optimal_text = ("a\n" * 10 + "<<<<<<< OTHER\nc\n"
314
+ 8* "b\n" + "c\n=======\n"
315
+ 10*"b\n" + ">>>>>>> THIS\n")
316
self.assertEqualDiff(optimal_text, merged_text)
318
def test_minimal_conflicts_unique(self):
320
"""Add a newline to each entry in the string"""
321
return [(x+'\n') for x in s]
323
base_text = add_newline("abcdefghijklm")
324
this_text = add_newline("abcdefghijklmNOPQRSTUVWXYZ")
325
other_text = add_newline("abcdefghijklm1OPQRSTUVWXY2")
326
m3 = Merge3(base_text, other_text, this_text)
327
m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
328
merged_text = "".join(list(m_lines))
329
optimal_text = ''.join(add_newline("abcdefghijklm")
330
+ ["<<<<<<< OTHER\n1\n=======\nN\n>>>>>>> THIS\n"]
331
+ add_newline('OPQRSTUVWXY')
332
+ ["<<<<<<< OTHER\n2\n=======\nZ\n>>>>>>> THIS\n"]
334
self.assertEqualDiff(optimal_text, merged_text)
336
def test_minimal_conflicts_nonunique(self):
338
"""Add a newline to each entry in the string"""
339
return [(x+'\n') for x in s]
341
base_text = add_newline("abacddefgghij")
342
this_text = add_newline("abacddefgghijkalmontfprz")
343
other_text = add_newline("abacddefgghijknlmontfprd")
344
m3 = Merge3(base_text, other_text, this_text)
345
m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
346
merged_text = "".join(list(m_lines))
347
optimal_text = ''.join(add_newline("abacddefgghijk")
348
+ ["<<<<<<< OTHER\nn\n=======\na\n>>>>>>> THIS\n"]
349
+ add_newline('lmontfpr')
350
+ ["<<<<<<< OTHER\nd\n=======\nz\n>>>>>>> THIS\n"]
352
self.assertEqualDiff(optimal_text, merged_text)
354
def test_reprocess_and_base(self):
355
"""Reprocessing and showing base breaks correctly"""
356
base_text = ("a\n" * 20).splitlines(True)
357
this_text = ("a\n"*10+"b\n" * 10).splitlines(True)
358
other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True)
359
m3 = Merge3(base_text, other_text, this_text)
360
m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True,
361
base_marker='|||||||')
362
self.assertRaises(CantReprocessAndShowBase, list, m_lines)
364
def test_binary(self):
365
self.assertRaises(BinaryFile, Merge3, ['\x00'], ['a'], ['b'])
367
def test_dos_text(self):
371
m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
372
this_text.splitlines(True))
373
m_lines = m3.merge_lines('OTHER', 'THIS')
374
self.assertEqual('<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n'
375
'>>>>>>> THIS\r\n'.splitlines(True), list(m_lines))
377
def test_mac_text(self):
381
m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
382
this_text.splitlines(True))
383
m_lines = m3.merge_lines('OTHER', 'THIS')
384
self.assertEqual('<<<<<<< OTHER\rc\r=======\rb\r'
385
'>>>>>>> THIS\r'.splitlines(True), list(m_lines))
added
removed
bzrlib/tests/test_merge3.py
