1
# Copyright (C) 2005, 2006 by 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
17
"""Tests for Knit data structure"""
23
from bzrlib.errors import KnitError, RevisionAlreadyPresent
24
from bzrlib.knit import KnitVersionedFile, KnitPlainFactory, KnitAnnotateFactory
25
from bzrlib.osutils import split_lines
26
from bzrlib.tests import TestCaseInTempDir
27
from bzrlib.transport import TransportLogger
28
from bzrlib.transport.local import LocalTransport
29
from bzrlib.transport.memory import MemoryTransport
32
class KnitTests(TestCaseInTempDir):
34
def add_stock_one_and_one_a(self, k):
35
k.add_lines('text-1', [], split_lines(TEXT_1))
36
k.add_lines('text-1a', ['text-1'], split_lines(TEXT_1A))
38
def test_knit_constructor(self):
39
"""Construct empty k"""
42
def make_test_knit(self, annotate=False):
44
factory = KnitPlainFactory()
47
return KnitVersionedFile('test', LocalTransport('.'), access_mode='w', factory=factory, create=True)
49
def test_knit_add(self):
50
"""Store one text in knit and retrieve"""
51
k = self.make_test_knit()
52
k.add_lines('text-1', [], split_lines(TEXT_1))
53
self.assertTrue(k.has_version('text-1'))
54
self.assertEqualDiff(''.join(k.get_lines('text-1')), TEXT_1)
56
def test_knit_reload(self):
57
# test that the content in a reloaded knit is correct
58
k = self.make_test_knit()
59
k.add_lines('text-1', [], split_lines(TEXT_1))
61
k2 = KnitVersionedFile('test', LocalTransport('.'), access_mode='r', factory=KnitPlainFactory(), create=True)
62
self.assertTrue(k2.has_version('text-1'))
63
self.assertEqualDiff(''.join(k2.get_lines('text-1')), TEXT_1)
65
def test_knit_several(self):
66
"""Store several texts in a knit"""
67
k = self.make_test_knit()
68
k.add_lines('text-1', [], split_lines(TEXT_1))
69
k.add_lines('text-2', [], split_lines(TEXT_2))
70
self.assertEqualDiff(''.join(k.get_lines('text-1')), TEXT_1)
71
self.assertEqualDiff(''.join(k.get_lines('text-2')), TEXT_2)
73
def test_repeated_add(self):
74
"""Knit traps attempt to replace existing version"""
75
k = self.make_test_knit()
76
k.add_lines('text-1', [], split_lines(TEXT_1))
77
self.assertRaises(RevisionAlreadyPresent,
79
'text-1', [], split_lines(TEXT_1))
82
k = self.make_test_knit(True)
83
k.add_lines('text-1', [], [])
84
self.assertEquals(k.get_lines('text-1'), [])
86
def test_incomplete(self):
87
"""Test if texts without a ending line-end can be inserted and
89
k = KnitVersionedFile('test', LocalTransport('.'), delta=False, create=True)
90
k.add_lines('text-1', [], ['a\n', 'b' ])
91
k.add_lines('text-2', ['text-1'], ['a\rb\n', 'b\n'])
92
self.assertEquals(k.get_lines('text-1'), ['a\n', 'b' ])
93
self.assertEquals(k.get_lines('text-2'), ['a\rb\n', 'b\n'])
96
"""Expression of knit delta as lines"""
97
k = self.make_test_knit()
98
td = list(line_delta(TEXT_1.splitlines(True),
99
TEXT_1A.splitlines(True)))
100
self.assertEqualDiff(''.join(td), delta_1_1a)
101
out = apply_line_delta(TEXT_1.splitlines(True), td)
102
self.assertEqualDiff(''.join(out), TEXT_1A)
104
def test_add_with_parents(self):
105
"""Store in knit with parents"""
106
k = self.make_test_knit()
107
self.add_stock_one_and_one_a(k)
108
self.assertEquals(k.get_parents('text-1'), [])
109
self.assertEquals(k.get_parents('text-1a'), ['text-1'])
111
def test_ancestry(self):
112
"""Store in knit with parents"""
113
k = self.make_test_knit()
114
self.add_stock_one_and_one_a(k)
115
self.assertEquals(set(k.get_ancestry(['text-1a'])), set(['text-1a', 'text-1']))
117
def test_add_delta(self):
118
"""Store in knit with parents"""
119
k = KnitVersionedFile('test', LocalTransport('.'), factory=KnitPlainFactory(),
120
delta=True, create=True)
121
self.add_stock_one_and_one_a(k)
123
self.assertEqualDiff(''.join(k.get_lines('text-1a')), TEXT_1A)
125
def test_annotate(self):
127
k = KnitVersionedFile('knit', LocalTransport('.'), factory=KnitAnnotateFactory(),
128
delta=True, create=True)
129
self.insert_and_test_small_annotate(k)
131
def insert_and_test_small_annotate(self, k):
132
"""test annotation with k works correctly."""
133
k.add_lines('text-1', [], ['a\n', 'b\n'])
134
k.add_lines('text-2', ['text-1'], ['a\n', 'c\n'])
136
origins = k.annotate('text-2')
137
self.assertEquals(origins[0], ('text-1', 'a\n'))
138
self.assertEquals(origins[1], ('text-2', 'c\n'))
140
def test_annotate_fulltext(self):
142
k = KnitVersionedFile('knit', LocalTransport('.'), factory=KnitAnnotateFactory(),
143
delta=False, create=True)
144
self.insert_and_test_small_annotate(k)
146
def test_annotate_merge_1(self):
147
k = self.make_test_knit(True)
148
k.add_lines('text-a1', [], ['a\n', 'b\n'])
149
k.add_lines('text-a2', [], ['d\n', 'c\n'])
150
k.add_lines('text-am', ['text-a1', 'text-a2'], ['d\n', 'b\n'])
151
origins = k.annotate('text-am')
152
self.assertEquals(origins[0], ('text-a2', 'd\n'))
153
self.assertEquals(origins[1], ('text-a1', 'b\n'))
155
def test_annotate_merge_2(self):
156
k = self.make_test_knit(True)
157
k.add_lines('text-a1', [], ['a\n', 'b\n', 'c\n'])
158
k.add_lines('text-a2', [], ['x\n', 'y\n', 'z\n'])
159
k.add_lines('text-am', ['text-a1', 'text-a2'], ['a\n', 'y\n', 'c\n'])
160
origins = k.annotate('text-am')
161
self.assertEquals(origins[0], ('text-a1', 'a\n'))
162
self.assertEquals(origins[1], ('text-a2', 'y\n'))
163
self.assertEquals(origins[2], ('text-a1', 'c\n'))
165
def test_annotate_merge_9(self):
166
k = self.make_test_knit(True)
167
k.add_lines('text-a1', [], ['a\n', 'b\n', 'c\n'])
168
k.add_lines('text-a2', [], ['x\n', 'y\n', 'z\n'])
169
k.add_lines('text-am', ['text-a1', 'text-a2'], ['k\n', 'y\n', 'c\n'])
170
origins = k.annotate('text-am')
171
self.assertEquals(origins[0], ('text-am', 'k\n'))
172
self.assertEquals(origins[1], ('text-a2', 'y\n'))
173
self.assertEquals(origins[2], ('text-a1', 'c\n'))
175
def test_annotate_merge_3(self):
176
k = self.make_test_knit(True)
177
k.add_lines('text-a1', [], ['a\n', 'b\n', 'c\n'])
178
k.add_lines('text-a2', [] ,['x\n', 'y\n', 'z\n'])
179
k.add_lines('text-am', ['text-a1', 'text-a2'], ['k\n', 'y\n', 'z\n'])
180
origins = k.annotate('text-am')
181
self.assertEquals(origins[0], ('text-am', 'k\n'))
182
self.assertEquals(origins[1], ('text-a2', 'y\n'))
183
self.assertEquals(origins[2], ('text-a2', 'z\n'))
185
def test_annotate_merge_4(self):
186
k = self.make_test_knit(True)
187
k.add_lines('text-a1', [], ['a\n', 'b\n', 'c\n'])
188
k.add_lines('text-a2', [], ['x\n', 'y\n', 'z\n'])
189
k.add_lines('text-a3', ['text-a1'], ['a\n', 'b\n', 'p\n'])
190
k.add_lines('text-am', ['text-a2', 'text-a3'], ['a\n', 'b\n', 'z\n'])
191
origins = k.annotate('text-am')
192
self.assertEquals(origins[0], ('text-a1', 'a\n'))
193
self.assertEquals(origins[1], ('text-a1', 'b\n'))
194
self.assertEquals(origins[2], ('text-a2', 'z\n'))
196
def test_annotate_merge_5(self):
197
k = self.make_test_knit(True)
198
k.add_lines('text-a1', [], ['a\n', 'b\n', 'c\n'])
199
k.add_lines('text-a2', [], ['d\n', 'e\n', 'f\n'])
200
k.add_lines('text-a3', [], ['x\n', 'y\n', 'z\n'])
201
k.add_lines('text-am',
202
['text-a1', 'text-a2', 'text-a3'],
203
['a\n', 'e\n', 'z\n'])
204
origins = k.annotate('text-am')
205
self.assertEquals(origins[0], ('text-a1', 'a\n'))
206
self.assertEquals(origins[1], ('text-a2', 'e\n'))
207
self.assertEquals(origins[2], ('text-a3', 'z\n'))
209
def test_annotate_file_cherry_pick(self):
210
k = self.make_test_knit(True)
211
k.add_lines('text-1', [], ['a\n', 'b\n', 'c\n'])
212
k.add_lines('text-2', ['text-1'], ['d\n', 'e\n', 'f\n'])
213
k.add_lines('text-3', ['text-2', 'text-1'], ['a\n', 'b\n', 'c\n'])
214
origins = k.annotate('text-3')
215
self.assertEquals(origins[0], ('text-1', 'a\n'))
216
self.assertEquals(origins[1], ('text-1', 'b\n'))
217
self.assertEquals(origins[2], ('text-1', 'c\n'))
219
def test_knit_join(self):
220
"""Store in knit with parents"""
221
k1 = KnitVersionedFile('test1', LocalTransport('.'), factory=KnitPlainFactory(), create=True)
222
k1.add_lines('text-a', [], split_lines(TEXT_1))
223
k1.add_lines('text-b', ['text-a'], split_lines(TEXT_1))
225
k1.add_lines('text-c', [], split_lines(TEXT_1))
226
k1.add_lines('text-d', ['text-c'], split_lines(TEXT_1))
228
k1.add_lines('text-m', ['text-b', 'text-d'], split_lines(TEXT_1))
230
k2 = KnitVersionedFile('test2', LocalTransport('.'), factory=KnitPlainFactory(), create=True)
231
count = k2.join(k1, version_ids=['text-m'])
232
self.assertEquals(count, 5)
233
self.assertTrue(k2.has_version('text-a'))
234
self.assertTrue(k2.has_version('text-c'))
236
def test_reannotate(self):
237
k1 = KnitVersionedFile('knit1', LocalTransport('.'),
238
factory=KnitAnnotateFactory(), create=True)
240
k1.add_lines('text-a', [], ['a\n', 'b\n'])
242
k1.add_lines('text-b', ['text-a'], ['a\n', 'c\n'])
244
k2 = KnitVersionedFile('test2', LocalTransport('.'),
245
factory=KnitAnnotateFactory(), create=True)
246
k2.join(k1, version_ids=['text-b'])
249
k1.add_lines('text-X', ['text-b'], ['a\n', 'b\n'])
251
k2.add_lines('text-c', ['text-b'], ['z\n', 'c\n'])
253
k2.add_lines('text-Y', ['text-b'], ['b\n', 'c\n'])
255
# test-c will have index 3
256
k1.join(k2, version_ids=['text-c'])
258
lines = k1.get_lines('text-c')
259
self.assertEquals(lines, ['z\n', 'c\n'])
261
origins = k1.annotate('text-c')
262
self.assertEquals(origins[0], ('text-c', 'z\n'))
263
self.assertEquals(origins[1], ('text-b', 'c\n'))
265
def test_extraction_reads_components_once(self):
266
t = MemoryTransport()
267
instrumented_t = TransportLogger(t)
268
k1 = KnitVersionedFile('id', instrumented_t, create=True, delta=True)
269
# should read the index
270
self.assertEqual([('id.kndx',)], instrumented_t._calls)
271
instrumented_t._calls = []
273
k1.add_lines('base', [], ['text\n'])
274
# should not have read at all
275
self.assertEqual([], instrumented_t._calls)
278
k1.add_lines('sub', ['base'], ['text\n', 'text2\n'])
279
# should not have read at all
280
self.assertEqual([], instrumented_t._calls)
284
# should not have read at all
285
self.assertEqual([], instrumented_t._calls)
292
# should have read a component
293
# should not have read the first component only
294
self.assertEqual([('id.knit', [(0, 87)])], instrumented_t._calls)
295
instrumented_t._calls = []
298
# should not have read at all
299
self.assertEqual([], instrumented_t._calls)
300
# and now read the other component
302
# should have read the second component
303
self.assertEqual([('id.knit', [(87, 93)])], instrumented_t._calls)
304
instrumented_t._calls = []
309
k1.add_lines('sub2', ['base'], ['text\n', 'text3\n'])
310
# should read the first component only
311
self.assertEqual([('id.knit', [(0, 87)])], instrumented_t._calls)
313
def test_iter_lines_reads_in_order(self):
314
t = MemoryTransport()
315
instrumented_t = TransportLogger(t)
316
k1 = KnitVersionedFile('id', instrumented_t, create=True, delta=True)
317
self.assertEqual([('id.kndx',)], instrumented_t._calls)
318
# add texts with no required ordering
319
k1.add_lines('base', [], ['text\n'])
320
k1.add_lines('base2', [], ['text2\n'])
322
instrumented_t._calls = []
323
# request a last-first iteration
324
results = list(k1.iter_lines_added_or_present_in_versions(['base2', 'base']))
325
self.assertEqual([('id.knit', [(0, 87), (87, 89)])], instrumented_t._calls)
326
self.assertEqual(['text\n', 'text2\n'], results)
328
def test_create_empty_annotated(self):
329
k1 = self.make_test_knit(True)
331
k1.add_lines('text-a', [], ['a\n', 'b\n'])
332
k2 = k1.create_empty('t', MemoryTransport())
333
self.assertTrue(isinstance(k2.factory, KnitAnnotateFactory))
334
self.assertEqual(k1.delta, k2.delta)
335
# the generic test checks for empty content and file class
337
def test_knit_format(self):
338
# this tests that a new knit index file has the expected content
339
# and that is writes the data we expect as records are added.
340
knit = self.make_test_knit(True)
341
self.assertFileEqual("# bzr knit index 7\n", 'test.kndx')
342
knit.add_lines_with_ghosts('revid', ['a_ghost'], ['a\n'])
343
self.assertFileEqual(
344
"# bzr knit index 7\n"
346
"revid fulltext 0 84 .a_ghost :",
348
knit.add_lines_with_ghosts('revid2', ['revid'], ['a\n'])
349
self.assertFileEqual(
350
"# bzr knit index 7\n"
351
"\nrevid fulltext 0 84 .a_ghost :"
352
"\nrevid2 line-delta 84 82 0 :",
354
# we should be able to load this file again
355
knit = KnitVersionedFile('test', LocalTransport('.'), access_mode='r')
356
self.assertEqual(['revid', 'revid2'], knit.versions())
357
# write a short write to the file and ensure that its ignored
358
indexfile = file('test.kndx', 'at')
359
indexfile.write('\nrevid3 line-delta 166 82 1 2 3 4 5 .phwoar:demo ')
361
# we should be able to load this file again
362
knit = KnitVersionedFile('test', LocalTransport('.'), access_mode='w')
363
self.assertEqual(['revid', 'revid2'], knit.versions())
364
# and add a revision with the same id the failed write had
365
knit.add_lines('revid3', ['revid2'], ['a\n'])
366
# and when reading it revid3 should now appear.
367
knit = KnitVersionedFile('test', LocalTransport('.'), access_mode='r')
368
self.assertEqual(['revid', 'revid2', 'revid3'], knit.versions())
369
self.assertEqual(['revid2'], knit.get_parents('revid3'))
382
Banana cup cake recipe
393
Banana cup cake recipe
409
def line_delta(from_lines, to_lines):
410
"""Generate line-based delta from one text to another"""
411
s = difflib.SequenceMatcher(None, from_lines, to_lines)
412
for op in s.get_opcodes():
415
yield '%d,%d,%d\n' % (op[1], op[2], op[4]-op[3])
416
for i in range(op[3], op[4]):
420
def apply_line_delta(basis_lines, delta_lines):
421
"""Apply a line-based perfect diff
423
basis_lines -- text to apply the patch to
424
delta_lines -- diff instructions and content
429
while i < len(delta_lines):
431
a, b, c = map(long, l.split(','))
433
out[offset+a:offset+b] = delta_lines[i:i+c]
435
offset = offset + (b - a) + c
added
removed
bzrlib/tests/test_knit.py
