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Viewing changes to bzrlib/tests/test_transactions.py

  • Committer: Michael Ellerman
  • Date: 2006-03-09 00:24:48 UTC
  • mto: (1610.1.8 bzr.mbp.integration)
  • mto: This revision was merged to the branch mainline in revision 1616.
  • Revision ID: michael@ellerman.id.au-20060309002448-70cce15e3d605130
Make the "ignore line" in the commit message editor the "right" width, so
that if you make your message that wide it won't wrap in bzr log output.
Just as a visual aid.

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bzrlib/tests/test_transactions.py
 
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# Copyright (C) 2005 by Canonical Ltd
 
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#   Authors: Robert Collins <robert.collins@canonical.com>
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""Tests for the behaviour of the Transaction concept in bzr."""
 
19
 
 
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# import system imports here
 
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import os
 
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import sys
 
23
 
 
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#import bzrlib specific imports here
 
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import bzrlib.errors as errors
 
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from bzrlib.tests import TestCase, TestCaseInTempDir
 
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import bzrlib.transactions as transactions
 
28
 
 
29
 
 
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class DummyWeave(object):
 
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    """A class that can be instantiated and compared."""
 
32
 
 
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    def __init__(self, message):
 
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        self._message = message
 
35
 
 
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    def __eq__(self, other):
 
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        if other is None:
 
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            return False
 
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        return self._message == other._message
 
40
 
 
41
 
 
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class TestSymbols(TestCase):
 
43
 
 
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    def test_public_symbols(self):
 
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        from bzrlib.transactions import ReadOnlyTransaction
 
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        from bzrlib.transactions import PassThroughTransaction
 
47
 
 
48
 
 
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class TestReadOnlyTransaction(TestCase):
 
50
 
 
51
    def setUp(self):
 
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        self.transaction = transactions.ReadOnlyTransaction()
 
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        super(TestReadOnlyTransaction, self).setUp()
 
54
 
 
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    def test_register_clean(self):
 
56
        self.transaction.register_clean("anobject")
 
57
 
 
58
    def test_register_dirty_raises(self):
 
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        self.assertRaises(errors.ReadOnlyError, 
 
60
                          self.transaction.register_dirty,"anobject")
 
61
    
 
62
    def test_commit_raises(self):
 
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        self.assertRaises(errors.CommitNotPossible, self.transaction.commit)
 
64
 
 
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    def test_map(self):
 
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        self.assertNotEqual(None, getattr(self.transaction, "map", None))
 
67
    
 
68
    def test_add_and_get(self):
 
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        weave = "a weave"
 
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        self.transaction.map.add_weave("id", weave)
 
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        self.assertEqual(weave, self.transaction.map.find_weave("id"))
 
72
 
 
73
    def test_rollback_returns(self):
 
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        self.transaction.rollback()
 
75
 
 
76
    def test_finish_returns(self):
 
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        self.transaction.finish()
 
78
 
 
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    def test_zero_size_cache(self):
 
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        self.transaction.set_cache_size(0)
 
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        weave = DummyWeave('a weave')
 
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        self.transaction.map.add_weave("id", weave)
 
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        self.assertEqual(weave, self.transaction.map.find_weave("id"))
 
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        weave = None
 
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        # add an object, should fall right out if there are no references
 
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        self.transaction.register_clean(self.transaction.map.find_weave("id"))
 
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        self.assertEqual(None, self.transaction.map.find_weave("id"))
 
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        # but if we have a reference it should stick around
 
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        weave = DummyWeave("another weave")
 
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        self.transaction.map.add_weave("id", weave)
 
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        self.transaction.register_clean(self.transaction.map.find_weave("id"))
 
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        self.assertEqual(weave, self.transaction.map.find_weave("id"))
 
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        del weave
 
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        # its not a weakref system
 
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        self.assertEqual(DummyWeave("another weave"),
 
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                         self.transaction.map.find_weave("id"))
 
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98
    def test_small_cache(self):
 
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        self.transaction.set_cache_size(1)
 
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        # add an object, should not fall right out if there are no references
 
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        #sys.getrefcounts(foo)
 
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        self.transaction.map.add_weave("id", DummyWeave("a weave"))
 
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        self.transaction.register_clean(self.transaction.map.find_weave("id"))
 
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        self.assertEqual(DummyWeave("a weave"),
 
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                         self.transaction.map.find_weave("id"))
 
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        self.transaction.map.add_weave("id2", DummyWeave("a weave also"))
 
107
        self.transaction.register_clean(self.transaction.map.find_weave("id2"))
 
108
        # currently a fifo
 
109
        self.assertEqual(None, self.transaction.map.find_weave("id"))
 
110
        self.assertEqual(DummyWeave("a weave also"),
 
111
                         self.transaction.map.find_weave("id2"))
 
112
 
 
113
    def test_small_cache_with_references(self):
 
114
        # if we have a reference it should stick around
 
115
        weave = "a weave"
 
116
        weave2 = "another weave"
 
117
        self.transaction.map.add_weave("id", weave)
 
118
        self.transaction.map.add_weave("id2", weave2)
 
119
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
 
120
        self.assertEqual(weave2, self.transaction.map.find_weave("id2"))
 
121
        weave = None
 
122
        # its not a weakref system
 
123
        self.assertEqual("a weave", self.transaction.map.find_weave("id"))
 
124
 
 
125
    def test_precious_with_zero_size_cache(self):
 
126
        self.transaction.set_cache_size(0)
 
127
        weave = DummyWeave('a weave')
 
128
        self.transaction.map.add_weave("id", weave)
 
129
        self.assertEqual(weave, self.transaction.map.find_weave("id"))
 
130
        weave = None
 
131
        # add an object, should not fall out even with no references.
 
132
        self.transaction.register_clean(self.transaction.map.find_weave("id"),
 
133
                                        precious=True)
 
134
        self.assertEqual(DummyWeave('a weave'),
 
135
                         self.transaction.map.find_weave("id"))
 
136
 
 
137
    def test_precious_revision_history(self):
 
138
        """Disabled test until revision-history is a real object."""
 
139
        print "Disabled: test_precious_revision_history"
 
140
        return
 
141
        self.transaction.set_cache_size(0)
 
142
        history = []
 
143
        self.transaction.map.add_revision_history(history)
 
144
        self.assertEqual(history, self.transaction.map.find_revision_history())
 
145
        history = None
 
146
        # add an object, should not fall out even with no references.
 
147
        self.transaction.register_clean(
 
148
            self.transaction.map.find_revision_history(), precious=True)
 
149
        self.assertEqual([], self.transaction.map.find_revision_history())
 
150
 
 
151
 
 
152
class TestPassThroughTransaction(TestCase):
 
153
 
 
154
    def test_construct(self):
 
155
        transactions.PassThroughTransaction()
 
156
 
 
157
    def test_register_clean(self):
 
158
        transaction = transactions.PassThroughTransaction()
 
159
        transaction.register_clean("anobject")
 
160
    
 
161
    def test_register_dirty(self):
 
162
        transaction = transactions.PassThroughTransaction()
 
163
        transaction.register_dirty("anobject")
 
164
    
 
165
    def test_commit_nothing_returns(self):
 
166
        transaction = transactions.PassThroughTransaction()
 
167
        transaction.commit()
 
168
 
 
169
    def test_map(self):
 
170
        transaction = transactions.PassThroughTransaction()
 
171
        self.assertNotEqual(None, getattr(transaction, "map", None))
 
172
    
 
173
    def test_add_and_get(self):
 
174
        transaction = transactions.PassThroughTransaction()
 
175
        weave = "a weave"
 
176
        transaction.map.add_weave("id", weave)
 
177
        self.assertEqual(None, transaction.map.find_weave("id"))
 
178
        
 
179
    def test_rollback_asserts(self):
 
180
        transaction = transactions.PassThroughTransaction()
 
181
        self.assertRaises(errors.AlreadyCommitted, transaction.rollback)
 
182
 
 
183
    def test_finish_returns(self):
 
184
        transaction = transactions.PassThroughTransaction()
 
185
        transaction.finish()
 
186
 
 
187
    def test_cache_is_ignored(self):
 
188
        transaction = transactions.PassThroughTransaction()
 
189
        transaction.set_cache_size(100)
 
190
        weave = "a weave"
 
191
        transaction.map.add_weave("id", weave)
 
192
        self.assertEqual(None, transaction.map.find_weave("id"))