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bzrlib/tests/test__annotator.py
 
1
# Copyright (C) 2009 Canonical Ltd
 
2
#
 
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.
 
7
#
 
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.
 
12
#
 
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
16
 
 
17
"""Tests for Annotators."""
 
18
 
 
19
from bzrlib import (
 
20
    annotate,
 
21
    _annotator_py,
 
22
    errors,
 
23
    knit,
 
24
    revision,
 
25
    tests,
 
26
    )
 
27
 
 
28
 
 
29
def load_tests(standard_tests, module, loader):
 
30
    """Parameterize tests for all versions of groupcompress."""
 
31
    scenarios = [
 
32
        ('python', {'module': _annotator_py}),
 
33
    ]
 
34
    suite = loader.suiteClass()
 
35
    if compiled_annotator.available():
 
36
        scenarios.append(('C', {'module': compiled_annotator.module}))
 
37
    else:
 
38
        # the compiled module isn't available, so we add a failing test
 
39
        class FailWithoutFeature(tests.TestCase):
 
40
            def test_fail(self):
 
41
                self.requireFeature(compiled_annotator)
 
42
        suite.addTest(loader.loadTestsFromTestCase(FailWithoutFeature))
 
43
    result = tests.multiply_tests(standard_tests, scenarios, suite)
 
44
    return result
 
45
 
 
46
 
 
47
compiled_annotator = tests.ModuleAvailableFeature('bzrlib._annotator_pyx')
 
48
 
 
49
 
 
50
class TestAnnotator(tests.TestCaseWithMemoryTransport):
 
51
 
 
52
    module = None # Set by load_tests
 
53
 
 
54
    fa_key = ('f-id', 'a-id')
 
55
    fb_key = ('f-id', 'b-id')
 
56
    fc_key = ('f-id', 'c-id')
 
57
    fd_key = ('f-id', 'd-id')
 
58
    fe_key = ('f-id', 'e-id')
 
59
    ff_key = ('f-id', 'f-id')
 
60
 
 
61
    def make_no_graph_texts(self):
 
62
        factory = knit.make_pack_factory(False, False, 2)
 
63
        self.vf = factory(self.get_transport())
 
64
        self.ann = self.module.Annotator(self.vf)
 
65
        self.vf.add_lines(self.fa_key, (), ['simple\n', 'content\n'])
 
66
        self.vf.add_lines(self.fb_key, (), ['simple\n', 'new content\n'])
 
67
 
 
68
    def make_simple_text(self):
 
69
        # TODO: all we really need is a VersionedFile instance, we'd like to
 
70
        #       avoid creating all the intermediate stuff
 
71
        factory = knit.make_pack_factory(True, True, 2)
 
72
        self.vf = factory(self.get_transport())
 
73
        # This assumes nothing special happens during __init__, which may be
 
74
        # valid
 
75
        self.ann = self.module.Annotator(self.vf)
 
76
        #  A    'simple|content|'
 
77
        #  |
 
78
        #  B    'simple|new content|'
 
79
        self.vf.add_lines(self.fa_key, [], ['simple\n', 'content\n'])
 
80
        self.vf.add_lines(self.fb_key, [self.fa_key],
 
81
                          ['simple\n', 'new content\n'])
 
82
 
 
83
    def make_merge_text(self):
 
84
        self.make_simple_text()
 
85
        #  A    'simple|content|'
 
86
        #  |\
 
87
        #  B |  'simple|new content|'
 
88
        #  | |
 
89
        #  | C  'simple|from c|content|'
 
90
        #  |/
 
91
        #  D    'simple|from c|new content|introduced in merge|'
 
92
        self.vf.add_lines(self.fc_key, [self.fa_key],
 
93
                          ['simple\n', 'from c\n', 'content\n'])
 
94
        self.vf.add_lines(self.fd_key, [self.fb_key, self.fc_key],
 
95
                          ['simple\n', 'from c\n', 'new content\n',
 
96
                           'introduced in merge\n'])
 
97
 
 
98
    def make_common_merge_text(self):
 
99
        """Both sides of the merge will have introduced a line."""
 
100
        self.make_simple_text()
 
101
        #  A    'simple|content|'
 
102
        #  |\
 
103
        #  B |  'simple|new content|'
 
104
        #  | |
 
105
        #  | C  'simple|new content|'
 
106
        #  |/
 
107
        #  D    'simple|new content|'
 
108
        self.vf.add_lines(self.fc_key, [self.fa_key],
 
109
                          ['simple\n', 'new content\n'])
 
110
        self.vf.add_lines(self.fd_key, [self.fb_key, self.fc_key],
 
111
                          ['simple\n', 'new content\n'])
 
112
 
 
113
    def make_many_way_common_merge_text(self):
 
114
        self.make_simple_text()
 
115
        #  A-.    'simple|content|'
 
116
        #  |\ \
 
117
        #  B | |  'simple|new content|'
 
118
        #  | | |
 
119
        #  | C |  'simple|new content|'
 
120
        #  |/  |
 
121
        #  D   |  'simple|new content|'
 
122
        #  |   |
 
123
        #  |   E  'simple|new content|'
 
124
        #  |  /
 
125
        #  F-'    'simple|new content|'
 
126
        self.vf.add_lines(self.fc_key, [self.fa_key],
 
127
                          ['simple\n', 'new content\n'])
 
128
        self.vf.add_lines(self.fd_key, [self.fb_key, self.fc_key],
 
129
                          ['simple\n', 'new content\n'])
 
130
        self.vf.add_lines(self.fe_key, [self.fa_key],
 
131
                          ['simple\n', 'new content\n'])
 
132
        self.vf.add_lines(self.ff_key, [self.fd_key, self.fe_key],
 
133
                          ['simple\n', 'new content\n'])
 
134
 
 
135
    def make_merge_and_restored_text(self):
 
136
        self.make_simple_text()
 
137
        #  A    'simple|content|'
 
138
        #  |\
 
139
        #  B |  'simple|new content|'
 
140
        #  | |
 
141
        #  C |  'simple|content|' # reverted to A
 
142
        #   \|
 
143
        #    D  'simple|content|'
 
144
        # c reverts back to 'a' for the new content line
 
145
        self.vf.add_lines(self.fc_key, [self.fb_key],
 
146
                          ['simple\n', 'content\n'])
 
147
        # d merges 'a' and 'c', to find both claim last modified
 
148
        self.vf.add_lines(self.fd_key, [self.fa_key, self.fc_key],
 
149
                          ['simple\n', 'content\n'])
 
150
 
 
151
    def assertAnnotateEqual(self, expected_annotation, key, exp_text=None):
 
152
        annotation, lines = self.ann.annotate(key)
 
153
        self.assertEqual(expected_annotation, annotation)
 
154
        if exp_text is None:
 
155
            record = self.vf.get_record_stream([key], 'unordered', True).next()
 
156
            exp_text = record.get_bytes_as('fulltext')
 
157
        self.assertEqualDiff(exp_text, ''.join(lines))
 
158
 
 
159
    def test_annotate_missing(self):
 
160
        self.make_simple_text()
 
161
        self.assertRaises(errors.RevisionNotPresent,
 
162
                          self.ann.annotate, ('not', 'present'))
 
163
 
 
164
    def test_annotate_simple(self):
 
165
        self.make_simple_text()
 
166
        self.assertAnnotateEqual([(self.fa_key,)]*2, self.fa_key)
 
167
        self.assertAnnotateEqual([(self.fa_key,), (self.fb_key,)], self.fb_key)
 
168
 
 
169
    def test_annotate_merge_text(self):
 
170
        self.make_merge_text()
 
171
        self.assertAnnotateEqual([(self.fa_key,), (self.fc_key,),
 
172
                                  (self.fb_key,), (self.fd_key,)],
 
173
                                 self.fd_key)
 
174
 
 
175
    def test_annotate_common_merge_text(self):
 
176
        self.make_common_merge_text()
 
177
        self.assertAnnotateEqual([(self.fa_key,), (self.fb_key, self.fc_key)],
 
178
                                 self.fd_key)
 
179
 
 
180
    def test_annotate_many_way_common_merge_text(self):
 
181
        self.make_many_way_common_merge_text()
 
182
        self.assertAnnotateEqual([(self.fa_key,),
 
183
                                  (self.fb_key, self.fc_key, self.fe_key)],
 
184
                                 self.ff_key)
 
185
 
 
186
    def test_annotate_merge_and_restored(self):
 
187
        self.make_merge_and_restored_text()
 
188
        self.assertAnnotateEqual([(self.fa_key,), (self.fa_key, self.fc_key)],
 
189
                                 self.fd_key)
 
190
 
 
191
    def test_annotate_flat_simple(self):
 
192
        self.make_simple_text()
 
193
        self.assertEqual([(self.fa_key, 'simple\n'),
 
194
                          (self.fa_key, 'content\n'),
 
195
                         ], self.ann.annotate_flat(self.fa_key))
 
196
        self.assertEqual([(self.fa_key, 'simple\n'),
 
197
                          (self.fb_key, 'new content\n'),
 
198
                         ], self.ann.annotate_flat(self.fb_key))
 
199
 
 
200
    def test_annotate_flat_merge_and_restored_text(self):
 
201
        self.make_merge_and_restored_text()
 
202
        # fc is a simple dominator of fa
 
203
        self.assertEqual([(self.fa_key, 'simple\n'),
 
204
                          (self.fc_key, 'content\n'),
 
205
                         ], self.ann.annotate_flat(self.fd_key))
 
206
 
 
207
    def test_annotate_common_merge_text(self):
 
208
        self.make_common_merge_text()
 
209
        # there is no common point, so we just pick the lexicographical lowest
 
210
        # and 'b-id' comes before 'c-id'
 
211
        self.assertEqual([(self.fa_key, 'simple\n'),
 
212
                          (self.fb_key, 'new content\n'),
 
213
                         ], self.ann.annotate_flat(self.fd_key))
 
214
 
 
215
    def test_annotate_many_way_common_merge_text(self):
 
216
        self.make_many_way_common_merge_text()
 
217
        self.assertEqual([(self.fa_key, 'simple\n'),
 
218
                         (self.fb_key, 'new content\n')],
 
219
                         self.ann.annotate_flat(self.ff_key))
 
220
 
 
221
    def test_annotate_flat_respects_break_ann_tie(self):
 
222
        tiebreaker = annotate._break_annotation_tie
 
223
        try:
 
224
            calls = []
 
225
            def custom_tiebreaker(annotated_lines):
 
226
                self.assertEqual(2, len(annotated_lines))
 
227
                left = annotated_lines[0]
 
228
                self.assertEqual(2, len(left))
 
229
                self.assertEqual('new content\n', left[1])
 
230
                right = annotated_lines[1]
 
231
                self.assertEqual(2, len(right))
 
232
                self.assertEqual('new content\n', right[1])
 
233
                calls.append((left[0], right[0]))
 
234
                # Our custom tiebreaker takes the *largest* value, rather than
 
235
                # the *smallest* value
 
236
                if left[0] < right[0]:
 
237
                    return right
 
238
                else:
 
239
                    return left
 
240
            annotate._break_annotation_tie = custom_tiebreaker
 
241
            self.make_many_way_common_merge_text()
 
242
            self.assertEqual([(self.fa_key, 'simple\n'),
 
243
                             (self.fe_key, 'new content\n')],
 
244
                             self.ann.annotate_flat(self.ff_key))
 
245
            self.assertEqual([(self.fe_key, self.fc_key),
 
246
                              (self.fe_key, self.fb_key)], calls)
 
247
        finally:
 
248
            annotate._break_annotation_tie = tiebreaker
 
249
 
 
250
 
 
251
    def test_needed_keys_simple(self):
 
252
        self.make_simple_text()
 
253
        keys, ann_keys = self.ann._get_needed_keys(self.fb_key)
 
254
        self.assertEqual([self.fa_key, self.fb_key], sorted(keys))
 
255
        self.assertEqual({self.fa_key: 1, self.fb_key: 1},
 
256
                         self.ann._num_needed_children)
 
257
        self.assertEqual(set(), ann_keys)
 
258
 
 
259
    def test_needed_keys_many(self):
 
260
        self.make_many_way_common_merge_text()
 
261
        keys, ann_keys = self.ann._get_needed_keys(self.ff_key)
 
262
        self.assertEqual([self.fa_key, self.fb_key, self.fc_key,
 
263
                          self.fd_key, self.fe_key, self.ff_key,
 
264
                         ], sorted(keys))
 
265
        self.assertEqual({self.fa_key: 3,
 
266
                          self.fb_key: 1,
 
267
                          self.fc_key: 1,
 
268
                          self.fd_key: 1,
 
269
                          self.fe_key: 1,
 
270
                          self.ff_key: 1,
 
271
                         }, self.ann._num_needed_children)
 
272
        self.assertEqual(set(), ann_keys)
 
273
 
 
274
    def test_needed_keys_with_special_text(self):
 
275
        self.make_many_way_common_merge_text()
 
276
        spec_key = ('f-id', revision.CURRENT_REVISION)
 
277
        spec_text = 'simple\nnew content\nlocally modified\n'
 
278
        self.ann.add_special_text(spec_key, [self.fd_key, self.fe_key],
 
279
                                  spec_text)
 
280
        keys, ann_keys = self.ann._get_needed_keys(spec_key)
 
281
        self.assertEqual([self.fa_key, self.fb_key, self.fc_key,
 
282
                          self.fd_key, self.fe_key,
 
283
                         ], sorted(keys))
 
284
        self.assertEqual([spec_key], sorted(ann_keys))
 
285
 
 
286
    def test_needed_keys_with_parent_texts(self):
 
287
        self.make_many_way_common_merge_text()
 
288
        # If 'D' and 'E' are already annotated, we don't need to extract all
 
289
        # the texts
 
290
        #  D   |  'simple|new content|'
 
291
        #  |   |
 
292
        #  |   E  'simple|new content|'
 
293
        #  |  /
 
294
        #  F-'    'simple|new content|'
 
295
        self.ann._parent_map[self.fd_key] = (self.fb_key, self.fc_key)
 
296
        self.ann._text_cache[self.fd_key] = ['simple\n', 'new content\n']
 
297
        self.ann._annotations_cache[self.fd_key] = [
 
298
            (self.fa_key,),
 
299
            (self.fb_key, self.fc_key),
 
300
            ]
 
301
        self.ann._parent_map[self.fe_key] = (self.fa_key,)
 
302
        self.ann._text_cache[self.fe_key] = ['simple\n', 'new content\n']
 
303
        self.ann._annotations_cache[self.fe_key] = [
 
304
            (self.fa_key,),
 
305
            (self.fe_key,),
 
306
            ]
 
307
        keys, ann_keys = self.ann._get_needed_keys(self.ff_key)
 
308
        self.assertEqual([self.ff_key], sorted(keys))
 
309
        self.assertEqual({self.fd_key: 1,
 
310
                          self.fe_key: 1,
 
311
                          self.ff_key: 1,
 
312
                         }, self.ann._num_needed_children)
 
313
        self.assertEqual([], sorted(ann_keys))
 
314
 
 
315
    def test_record_annotation_removes_texts(self):
 
316
        self.make_many_way_common_merge_text()
 
317
        # Populate the caches
 
318
        for x in self.ann._get_needed_texts(self.ff_key):
 
319
            continue
 
320
        self.assertEqual({self.fa_key: 3,
 
321
                          self.fb_key: 1,
 
322
                          self.fc_key: 1,
 
323
                          self.fd_key: 1,
 
324
                          self.fe_key: 1,
 
325
                          self.ff_key: 1,
 
326
                         }, self.ann._num_needed_children)
 
327
        self.assertEqual([self.fa_key, self.fb_key, self.fc_key,
 
328
                          self.fd_key, self.fe_key, self.ff_key,
 
329
                         ], sorted(self.ann._text_cache.keys()))
 
330
        self.ann._record_annotation(self.fa_key, [], [])
 
331
        self.ann._record_annotation(self.fb_key, [self.fa_key], [])
 
332
        self.assertEqual({self.fa_key: 2,
 
333
                          self.fb_key: 1,
 
334
                          self.fc_key: 1,
 
335
                          self.fd_key: 1,
 
336
                          self.fe_key: 1,
 
337
                          self.ff_key: 1,
 
338
                         }, self.ann._num_needed_children)
 
339
        self.assertTrue(self.fa_key in self.ann._text_cache)
 
340
        self.assertTrue(self.fa_key in self.ann._annotations_cache)
 
341
        self.ann._record_annotation(self.fc_key, [self.fa_key], [])
 
342
        self.ann._record_annotation(self.fd_key, [self.fb_key, self.fc_key], [])
 
343
        self.assertEqual({self.fa_key: 1,
 
344
                          self.fb_key: 0,
 
345
                          self.fc_key: 0,
 
346
                          self.fd_key: 1,
 
347
                          self.fe_key: 1,
 
348
                          self.ff_key: 1,
 
349
                         }, self.ann._num_needed_children)
 
350
        self.assertTrue(self.fa_key in self.ann._text_cache)
 
351
        self.assertTrue(self.fa_key in self.ann._annotations_cache)
 
352
        self.assertFalse(self.fb_key in self.ann._text_cache)
 
353
        self.assertFalse(self.fb_key in self.ann._annotations_cache)
 
354
        self.assertFalse(self.fc_key in self.ann._text_cache)
 
355
        self.assertFalse(self.fc_key in self.ann._annotations_cache)
 
356
 
 
357
    def test_annotate_special_text(self):
 
358
        # Things like WT and PreviewTree want to annotate an arbitrary text
 
359
        # ('current:') so we need a way to add that to the group of files to be
 
360
        # annotated.
 
361
        self.make_many_way_common_merge_text()
 
362
        #  A-.    'simple|content|'
 
363
        #  |\ \
 
364
        #  B | |  'simple|new content|'
 
365
        #  | | |
 
366
        #  | C |  'simple|new content|'
 
367
        #  |/  |
 
368
        #  D   |  'simple|new content|'
 
369
        #  |   |
 
370
        #  |   E  'simple|new content|'
 
371
        #  |  /
 
372
        #  SPEC   'simple|new content|locally modified|'
 
373
        spec_key = ('f-id', revision.CURRENT_REVISION)
 
374
        spec_text = 'simple\nnew content\nlocally modified\n'
 
375
        self.ann.add_special_text(spec_key, [self.fd_key, self.fe_key],
 
376
                                  spec_text)
 
377
        self.assertAnnotateEqual([(self.fa_key,),
 
378
                                  (self.fb_key, self.fc_key, self.fe_key),
 
379
                                  (spec_key,),
 
380
                                 ], spec_key,
 
381
                                 exp_text=spec_text)
 
382
 
 
383
    def test_no_graph(self):
 
384
        self.make_no_graph_texts()
 
385
        self.assertAnnotateEqual([(self.fa_key,),
 
386
                                  (self.fa_key,),
 
387
                                 ], self.fa_key)
 
388
        self.assertAnnotateEqual([(self.fb_key,),
 
389
                                  (self.fb_key,),
 
390
                                 ], self.fb_key)