← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/tests/test_transactions.py

  • Committer: Martin Pool
  • Date: 2005-09-15 08:37:41 UTC
  • Revision ID: mbp@sourcefrog.net-20050915083741-70d7550b97c7b580
- some updates for fetch/update function

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/tests/test_transactions.py
1
 
# Copyright (C) 2005, 2006, 2009, 2011 Canonical Ltd
2
 
#   Authors: Robert Collins <robert.collins@canonical.com>
3
 
#
4
 
# This program is free software; you can redistribute it and/or modify
5
 
# it under the terms of the GNU General Public License as published by
6
 
# the Free Software Foundation; either version 2 of the License, or
7
 
# (at your option) any later version.
8
 
#
9
 
# This program is distributed in the hope that it will be useful,
10
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
11
 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12
 
# GNU General Public License for more details.
13
 
#
14
 
# You should have received a copy of the GNU General Public License
15
 
# along with this program; if not, write to the Free Software
16
 
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
 
 
18
 
"""Tests for the behaviour of the Transaction concept in bzr."""
19
 
 
20
 
#import bzrlib specific imports here
21
 
import bzrlib.errors as errors
22
 
from bzrlib.tests import TestCase
23
 
import bzrlib.transactions as transactions
24
 
 
25
 
 
26
 
class DummyWeave(object):
27
 
    """A class that can be instantiated and compared."""
28
 
 
29
 
    def __init__(self, message):
30
 
        self._message = message
31
 
        self.finished = False
32
 
 
33
 
    def __eq__(self, other):
34
 
        if other is None:
35
 
            return False
36
 
        return self._message == other._message
37
 
 
38
 
    def transaction_finished(self):
39
 
        self.finished = True
40
 
 
41
 
 
42
 
class TestSymbols(TestCase):
43
 
 
44
 
    def test_public_symbols(self):
45
 
        from bzrlib.transactions import ReadOnlyTransaction
46
 
        from bzrlib.transactions import PassThroughTransaction
47
 
 
48
 
 
49
 
class TestReadOnlyTransaction(TestCase):
50
 
 
51
 
    def setUp(self):
52
 
        self.transaction = transactions.ReadOnlyTransaction()
53
 
        super(TestReadOnlyTransaction, self).setUp()
54
 
 
55
 
    def test_register_clean(self):
56
 
        self.transaction.register_clean("anobject")
57
 
 
58
 
    def test_register_dirty_raises(self):
59
 
        self.assertRaises(errors.ReadOnlyError,
60
 
                          self.transaction.register_dirty,"anobject")
61
 
 
62
 
    def test_map(self):
63
 
        self.assertNotEqual(None, getattr(self.transaction, "map", None))
64
 
 
65
 
    def test_add_and_get(self):
66
 
        weave = "a weave"
67
 
        self.transaction.map.add_weave("id", weave)
68
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
69
 
 
70
 
    def test_finish_returns(self):
71
 
        self.transaction.finish()
72
 
 
73
 
    def test_finish_does_not_tell_versioned_file_finished(self):
74
 
        # read only transactions never write, so theres no
75
 
        # need to inform versioned files about finishing
76
 
        weave = DummyWeave('a weave')
77
 
        self.transaction.finish()
78
 
        self.assertFalse(weave.finished)
79
 
 
80
 
    def test_zero_size_cache(self):
81
 
        self.transaction.set_cache_size(0)
82
 
        weave = DummyWeave('a weave')
83
 
        self.transaction.map.add_weave("id", weave)
84
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
85
 
        weave = None
86
 
        # add an object, should fall right out if there are no references
87
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"))
88
 
        self.assertEqual(None, self.transaction.map.find_weave("id"))
89
 
        # but if we have a reference it should stick around
90
 
        weave = DummyWeave("another weave")
91
 
        self.transaction.map.add_weave("id", weave)
92
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"))
93
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
94
 
        del weave
95
 
        # its not a weakref system
96
 
        self.assertEqual(DummyWeave("another weave"),
97
 
                         self.transaction.map.find_weave("id"))
98
 
 
99
 
    def test_small_cache(self):
100
 
        self.transaction.set_cache_size(1)
101
 
        # add an object, should not fall right out if there are no references
102
 
        #sys.getrefcounts(foo)
103
 
        self.transaction.map.add_weave("id", DummyWeave("a weave"))
104
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"))
105
 
        self.assertEqual(DummyWeave("a weave"),
106
 
                         self.transaction.map.find_weave("id"))
107
 
        self.transaction.map.add_weave("id2", DummyWeave("a weave also"))
108
 
        self.transaction.register_clean(self.transaction.map.find_weave("id2"))
109
 
        # currently a fifo
110
 
        self.assertEqual(None, self.transaction.map.find_weave("id"))
111
 
        self.assertEqual(DummyWeave("a weave also"),
112
 
                         self.transaction.map.find_weave("id2"))
113
 
 
114
 
    def test_small_cache_with_references(self):
115
 
        # if we have a reference it should stick around
116
 
        weave = "a weave"
117
 
        weave2 = "another weave"
118
 
        self.transaction.map.add_weave("id", weave)
119
 
        self.transaction.map.add_weave("id2", weave2)
120
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
121
 
        self.assertEqual(weave2, self.transaction.map.find_weave("id2"))
122
 
        weave = None
123
 
        # its not a weakref system
124
 
        self.assertEqual("a weave", self.transaction.map.find_weave("id"))
125
 
 
126
 
    def test_precious_with_zero_size_cache(self):
127
 
        self.transaction.set_cache_size(0)
128
 
        weave = DummyWeave('a weave')
129
 
        self.transaction.map.add_weave("id", weave)
130
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
131
 
        weave = None
132
 
        # add an object, should not fall out even with no references.
133
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"),
134
 
                                        precious=True)
135
 
        self.assertEqual(DummyWeave('a weave'),
136
 
                         self.transaction.map.find_weave("id"))
137
 
 
138
 
    def test_writable(self):
139
 
        self.assertFalse(self.transaction.writeable())
140
 
 
141
 
 
142
 
class TestPassThroughTransaction(TestCase):
143
 
 
144
 
    def test_construct(self):
145
 
        transactions.PassThroughTransaction()
146
 
 
147
 
    def test_register_clean(self):
148
 
        transaction = transactions.PassThroughTransaction()
149
 
        transaction.register_clean("anobject")
150
 
 
151
 
    def test_register_dirty(self):
152
 
        transaction = transactions.PassThroughTransaction()
153
 
        transaction.register_dirty("anobject")
154
 
 
155
 
    def test_map(self):
156
 
        transaction = transactions.PassThroughTransaction()
157
 
        self.assertNotEqual(None, getattr(transaction, "map", None))
158
 
 
159
 
    def test_add_and_get(self):
160
 
        transaction = transactions.PassThroughTransaction()
161
 
        weave = "a weave"
162
 
        transaction.map.add_weave("id", weave)
163
 
        self.assertEqual(None, transaction.map.find_weave("id"))
164
 
 
165
 
    def test_finish_returns(self):
166
 
        transaction = transactions.PassThroughTransaction()
167
 
        transaction.finish()
168
 
 
169
 
    def test_finish_tells_versioned_file_finished(self):
170
 
        # pass through transactions allow writes so they
171
 
        # need to inform versioned files about finishing
172
 
        weave = DummyWeave('a weave')
173
 
        transaction = transactions.PassThroughTransaction()
174
 
        transaction.register_dirty(weave)
175
 
        transaction.finish()
176
 
        self.assertTrue(weave.finished)
177
 
 
178
 
    def test_cache_is_ignored(self):
179
 
        transaction = transactions.PassThroughTransaction()
180
 
        transaction.set_cache_size(100)
181
 
        weave = "a weave"
182
 
        transaction.map.add_weave("id", weave)
183
 
        self.assertEqual(None, transaction.map.find_weave("id"))
184
 
 
185
 
    def test_writable(self):
186
 
        transaction = transactions.PassThroughTransaction()
187
 
        self.assertTrue(transaction.writeable())
188
 
 
189
 
 
190
 
class TestWriteTransaction(TestCase):
191
 
 
192
 
    def setUp(self):
193
 
        self.transaction = transactions.WriteTransaction()
194
 
        super(TestWriteTransaction, self).setUp()
195
 
 
196
 
    def test_register_clean(self):
197
 
        self.transaction.register_clean("anobject")
198
 
 
199
 
    def test_register_dirty(self):
200
 
        self.transaction.register_dirty("anobject")
201
 
 
202
 
    def test_map(self):
203
 
        self.assertNotEqual(None, getattr(self.transaction, "map", None))
204
 
 
205
 
    def test_add_and_get(self):
206
 
        weave = "a weave"
207
 
        self.transaction.map.add_weave("id", weave)
208
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
209
 
 
210
 
    def test_finish_returns(self):
211
 
        self.transaction.finish()
212
 
 
213
 
    def test_finish_tells_versioned_file_finished(self):
214
 
        # write transactions allow writes so they
215
 
        # need to inform versioned files about finishing
216
 
        weave = DummyWeave('a weave')
217
 
        self.transaction.register_dirty(weave)
218
 
        self.transaction.finish()
219
 
        self.assertTrue(weave.finished)
220
 
 
221
 
    def test_zero_size_cache(self):
222
 
        self.transaction.set_cache_size(0)
223
 
        # add an object, should fall right out if there are no references
224
 
        weave = DummyWeave('a weave')
225
 
        self.transaction.map.add_weave("id", weave)
226
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
227
 
        weave = None
228
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"))
229
 
        self.assertEqual(None, self.transaction.map.find_weave("id"))
230
 
        # but if we have a reference to a clean object it should stick around
231
 
        weave = DummyWeave("another weave")
232
 
        self.transaction.map.add_weave("id", weave)
233
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"))
234
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
235
 
        del weave
236
 
        # its not a weakref system
237
 
        self.assertEqual(DummyWeave("another weave"),
238
 
                         self.transaction.map.find_weave("id"))
239
 
 
240
 
    def test_zero_size_cache_dirty_objects(self):
241
 
        self.transaction.set_cache_size(0)
242
 
        # add a dirty object, which should not fall right out.
243
 
        weave = DummyWeave('a weave')
244
 
        self.transaction.map.add_weave("id", weave)
245
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
246
 
        weave = None
247
 
        self.transaction.register_dirty(self.transaction.map.find_weave("id"))
248
 
        self.assertNotEqual(None, self.transaction.map.find_weave("id"))
249
 
 
250
 
    def test_clean_to_dirty(self):
251
 
        # a clean object may become dirty.
252
 
        weave = DummyWeave('A weave')
253
 
        self.transaction.map.add_weave("id", weave)
254
 
        self.transaction.register_clean(weave)
255
 
        self.transaction.register_dirty(weave)
256
 
        self.assertTrue(self.transaction.is_dirty(weave))
257
 
        self.assertFalse(self.transaction.is_clean(weave))
258
 
 
259
 
    def test_small_cache(self):
260
 
        self.transaction.set_cache_size(1)
261
 
        # add an object, should not fall right out if there are no references
262
 
        #sys.getrefcounts(foo)
263
 
        self.transaction.map.add_weave("id", DummyWeave("a weave"))
264
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"))
265
 
        self.assertEqual(DummyWeave("a weave"),
266
 
                         self.transaction.map.find_weave("id"))
267
 
        self.transaction.map.add_weave("id2", DummyWeave("a weave also"))
268
 
        self.transaction.register_clean(self.transaction.map.find_weave("id2"))
269
 
        # currently a fifo
270
 
        self.assertEqual(None, self.transaction.map.find_weave("id"))
271
 
        self.assertEqual(DummyWeave("a weave also"),
272
 
                         self.transaction.map.find_weave("id2"))
273
 
 
274
 
    def test_small_cache_with_references(self):
275
 
        # if we have a reference it should stick around
276
 
        weave = "a weave"
277
 
        weave2 = "another weave"
278
 
        self.transaction.map.add_weave("id", weave)
279
 
        self.transaction.map.add_weave("id2", weave2)
280
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
281
 
        self.assertEqual(weave2, self.transaction.map.find_weave("id2"))
282
 
        weave = None
283
 
        # its not a weakref system
284
 
        self.assertEqual("a weave", self.transaction.map.find_weave("id"))
285
 
 
286
 
    def test_precious_with_zero_size_cache(self):
287
 
        self.transaction.set_cache_size(0)
288
 
        weave = DummyWeave('a weave')
289
 
        self.transaction.map.add_weave("id", weave)
290
 
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
291
 
        weave = None
292
 
        # add an object, should not fall out even with no references.
293
 
        self.transaction.register_clean(self.transaction.map.find_weave("id"),
294
 
                                        precious=True)
295
 
        self.assertEqual(DummyWeave('a weave'),
296
 
                         self.transaction.map.find_weave("id"))
297
 
 
298
 
    def test_writable(self):
299
 
        self.assertTrue(self.transaction.writeable())