1
# Copyright (C) 2004, 2005 Canonical Ltd
1
# Copyright (C) 2004, 2005 by Canonical Ltd
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
5
5
# the Free Software Foundation; either version 2 of the License, or
6
6
# (at your option) any later version.
8
8
# This program is distributed in the hope that it will be useful,
9
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
11
# GNU General Public License for more details.
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
18
from bzrlib.tests import TestCaseInTempDir, TestCase
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
from bzrlib.selftest import InTempDir, TestBase
19
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"""
25
class NoChanges(TestBase):
26
"""No conflicts because nothing changed"""
98
28
m3 = Merge3(['aaa', 'bbb'],
295
252
(4,4, 5,5, 6,6),])
297
def test_merge_poem(self):
298
"""Test case from diff3 manual"""
261
from cStringIO import StringIO
262
return StringIO(t).readlines()
266
############################################################
267
# test case from the gnu diffutils manual
270
TZU = split_lines(""" The Nameless is the origin of Heaven and Earth;
271
The named is the mother of all things.
273
Therefore let there always be non-being,
274
so we may see their subtlety,
275
And let there always be being,
276
so we may see their outcome.
277
The two are the same,
278
But after they are produced,
279
they have different names.
280
They both may be called deep and profound.
281
Deeper and more profound,
282
The door of all subtleties!
285
LAO = split_lines(""" The Way that can be told of is not the eternal Way;
286
The name that can be named is not the eternal name.
287
The Nameless is the origin of Heaven and Earth;
288
The Named is the mother of all things.
289
Therefore let there always be non-being,
290
so we may see their subtlety,
291
And let there always be being,
292
so we may see their outcome.
293
The two are the same,
294
But after they are produced,
295
they have different names.
299
TAO = split_lines(""" The Way that can be told of is not the eternal Way;
300
The name that can be named is not the eternal name.
301
The Nameless is the origin of Heaven and Earth;
302
The named is the mother of all things.
304
Therefore let there always be non-being,
305
so we may see their subtlety,
306
And let there always be being,
307
so we may see their result.
308
The two are the same,
309
But after they are produced,
310
they have different names.
312
-- The Way of Lao-Tzu, tr. Wing-tsit Chan
316
MERGED_RESULT = split_lines(""" The Way that can be told of is not the eternal Way;
317
The name that can be named is not the eternal name.
318
The Nameless is the origin of Heaven and Earth;
319
The Named is the mother of all things.
320
Therefore let there always be non-being,
321
so we may see their subtlety,
322
And let there always be being,
323
so we may see their result.
324
The two are the same,
325
But after they are produced,
326
they have different names.
330
-- The Way of Lao-Tzu, tr. Wing-tsit Chan
337
class MergePoem(TestBase):
338
"""Test case from diff3 manual"""
299
340
m3 = Merge3(TZU, LAO, TAO)
300
341
ml = list(m3.merge_lines('LAO', 'TAO'))
301
342
self.log('merge result:')
302
343
self.log(''.join(ml))
303
344
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))
387
def test_merge3_cherrypick(self):
390
other_text = "a\nb\nc\n"
391
# When cherrypicking, lines in base are not part of the conflict
392
m3 = Merge3(base_text.splitlines(True), this_text.splitlines(True),
393
other_text.splitlines(True), is_cherrypick=True)
394
m_lines = m3.merge_lines()
395
self.assertEqualDiff('a\n<<<<<<<\n=======\nc\n>>>>>>>\n',
398
# This is not symmetric
399
m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
400
this_text.splitlines(True), is_cherrypick=True)
401
m_lines = m3.merge_lines()
402
self.assertEqualDiff('a\n<<<<<<<\nb\nc\n=======\n>>>>>>>\n',
405
def test_merge3_cherrypick_w_mixed(self):
406
base_text = 'a\nb\nc\nd\ne\n'
407
this_text = 'a\nb\nq\n'
408
other_text = 'a\nb\nc\nd\nf\ne\ng\n'
409
# When cherrypicking, lines in base are not part of the conflict
410
m3 = Merge3(base_text.splitlines(True), this_text.splitlines(True),
411
other_text.splitlines(True), is_cherrypick=True)
412
m_lines = m3.merge_lines()
413
self.assertEqualDiff('a\n'