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Viewing changes to bzrlib/tests/test__chk_map.py

  • Committer: John Arbash Meinel
  • Date: 2009-04-23 00:58:30 UTC
  • mfrom: (4300.2.1 1.15-gc-python)
  • mto: This revision was merged to the branch mainline in revision 4301.
  • Revision ID: john@arbash-meinel.com-20090423005830-kkdc31tqjetbj2f0
Bring in the other test cases.
Also, remove the assert statements.

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bzrlib/tests/test__chk_map.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 _chk_map_*."""
 
18
 
 
19
from bzrlib import (
 
20
    chk_map,
 
21
    tests,
 
22
    )
 
23
 
 
24
 
 
25
def load_tests(standard_tests, module, loader):
 
26
    # parameterize all tests in this module
 
27
    suite = loader.suiteClass()
 
28
    import bzrlib._chk_map_py as py_module
 
29
    scenarios = [('python', {'module': py_module})]
 
30
    if CompiledChkMapFeature.available():
 
31
        import bzrlib._chk_map_pyx as c_module
 
32
        scenarios.append(('C', {'module': c_module}))
 
33
    else:
 
34
        # the compiled module isn't available, so we add a failing test
 
35
        class FailWithoutFeature(tests.TestCase):
 
36
            def test_fail(self):
 
37
                self.requireFeature(CompiledChkMapFeature)
 
38
        suite.addTest(loader.loadTestsFromTestCase(FailWithoutFeature))
 
39
    tests.multiply_tests(standard_tests, scenarios, suite)
 
40
    return suite
 
41
 
 
42
 
 
43
class _CompiledChkMapFeature(tests.Feature):
 
44
 
 
45
    def _probe(self):
 
46
        try:
 
47
            import bzrlib._chk_map_pyx
 
48
        except ImportError:
 
49
            return False
 
50
        return True
 
51
 
 
52
    def feature_name(self):
 
53
        return 'bzrlib._chk_map_pyx'
 
54
 
 
55
CompiledChkMapFeature = _CompiledChkMapFeature()
 
56
 
 
57
 
 
58
class TestSearchKeys(tests.TestCase):
 
59
 
 
60
    module = None # Filled in by test parameterization
 
61
 
 
62
    def assertSearchKey16(self, expected, key):
 
63
        self.assertEqual(expected, self.module._search_key_16(key))
 
64
 
 
65
    def assertSearchKey255(self, expected, key):
 
66
        actual = self.module._search_key_255(key)
 
67
        self.assertEqual(expected, actual, 'actual: %r' % (actual,))
 
68
 
 
69
    def test_simple_16(self):
 
70
        self.assertSearchKey16('8C736521', ('foo',))
 
71
        self.assertSearchKey16('8C736521\x008C736521', ('foo', 'foo'))
 
72
        self.assertSearchKey16('8C736521\x0076FF8CAA', ('foo', 'bar'))
 
73
        self.assertSearchKey16('ED82CD11', ('abcd',))
 
74
 
 
75
    def test_simple_255(self):
 
76
        self.assertSearchKey255('\x8cse!', ('foo',))
 
77
        self.assertSearchKey255('\x8cse!\x00\x8cse!', ('foo', 'foo'))
 
78
        self.assertSearchKey255('\x8cse!\x00v\xff\x8c\xaa', ('foo', 'bar'))
 
79
        # The standard mapping for these would include '\n', so it should be
 
80
        # mapped to '_'
 
81
        self.assertSearchKey255('\xfdm\x93_\x00P_\x1bL', ('<', 'V'))
 
82
 
 
83
    def test_255_does_not_include_newline(self):
 
84
        # When mapping via _search_key_255, we should never have the '\n'
 
85
        # character, but all other 255 values should be present
 
86
        chars_used = set()
 
87
        for char_in in range(256):
 
88
            search_key = self.module._search_key_255((chr(char_in),))
 
89
            chars_used.update(search_key)
 
90
        all_chars = set([chr(x) for x in range(256)])
 
91
        unused_chars = all_chars.symmetric_difference(chars_used)
 
92
        self.assertEqual(set('\n'), unused_chars)
 
93
 
 
94
 
 
95
class TestDeserialiseLeafNode(tests.TestCase):
 
96
 
 
97
    module = None
 
98
 
 
99
    def assertDeserialiseErrors(self, text):
 
100
        self.assertRaises((ValueError, IndexError),
 
101
            self.module._deserialise_leaf_node, text, 'not-a-real-sha')
 
102
 
 
103
    def test_raises_on_non_leaf(self):
 
104
        self.assertDeserialiseErrors('')
 
105
        self.assertDeserialiseErrors('short\n')
 
106
        self.assertDeserialiseErrors('chknotleaf:\n')
 
107
        self.assertDeserialiseErrors('chkleaf:x\n')
 
108
        self.assertDeserialiseErrors('chkleaf:\n')
 
109
        self.assertDeserialiseErrors('chkleaf:\nnotint\n')
 
110
        self.assertDeserialiseErrors('chkleaf:\n10\n')
 
111
        self.assertDeserialiseErrors('chkleaf:\n10\n256\n')
 
112
        self.assertDeserialiseErrors('chkleaf:\n10\n256\n10\n')
 
113
 
 
114
    def test_deserialise_empty(self):
 
115
        node = self.module._deserialise_leaf_node(
 
116
            "chkleaf:\n10\n1\n0\n\n", ("sha1:1234",))
 
117
        self.assertEqual(0, len(node))
 
118
        self.assertEqual(10, node.maximum_size)
 
119
        self.assertEqual(("sha1:1234",), node.key())
 
120
        self.assertIs(None, node._search_prefix)
 
121
        self.assertIs(None, node._common_serialised_prefix)
 
122
 
 
123
    def test_deserialise_items(self):
 
124
        node = self.module._deserialise_leaf_node(
 
125
            "chkleaf:\n0\n1\n2\n\nfoo bar\x001\nbaz\nquux\x001\nblarh\n",
 
126
            ("sha1:1234",))
 
127
        self.assertEqual(2, len(node))
 
128
        self.assertEqual([(("foo bar",), "baz"), (("quux",), "blarh")],
 
129
            sorted(node.iteritems(None)))
 
130
 
 
131
    def test_deserialise_item_with_null_width_1(self):
 
132
        node = self.module._deserialise_leaf_node(
 
133
            "chkleaf:\n0\n1\n2\n\nfoo\x001\nbar\x00baz\nquux\x001\nblarh\n",
 
134
            ("sha1:1234",))
 
135
        self.assertEqual(2, len(node))
 
136
        self.assertEqual([(("foo",), "bar\x00baz"), (("quux",), "blarh")],
 
137
            sorted(node.iteritems(None)))
 
138
 
 
139
    def test_deserialise_item_with_null_width_2(self):
 
140
        node = self.module._deserialise_leaf_node(
 
141
            "chkleaf:\n0\n2\n2\n\nfoo\x001\x001\nbar\x00baz\n"
 
142
            "quux\x00\x001\nblarh\n",
 
143
            ("sha1:1234",))
 
144
        self.assertEqual(2, len(node))
 
145
        self.assertEqual([(("foo", "1"), "bar\x00baz"), (("quux", ""), "blarh")],
 
146
            sorted(node.iteritems(None)))
 
147
 
 
148
    def test_iteritems_selected_one_of_two_items(self):
 
149
        node = self.module._deserialise_leaf_node(
 
150
            "chkleaf:\n0\n1\n2\n\nfoo bar\x001\nbaz\nquux\x001\nblarh\n",
 
151
            ("sha1:1234",))
 
152
        self.assertEqual(2, len(node))
 
153
        self.assertEqual([(("quux",), "blarh")],
 
154
            sorted(node.iteritems(None, [("quux",), ("qaz",)])))
 
155
 
 
156
    def test_deserialise_item_with_common_prefix(self):
 
157
        node = self.module._deserialise_leaf_node(
 
158
            "chkleaf:\n0\n2\n2\nfoo\x00\n1\x001\nbar\x00baz\n2\x001\nblarh\n",
 
159
            ("sha1:1234",))
 
160
        self.assertEqual(2, len(node))
 
161
        self.assertEqual([(("foo", "1"), "bar\x00baz"), (("foo", "2"), "blarh")],
 
162
            sorted(node.iteritems(None)))
 
163
        self.assertIs(chk_map._unknown, node._search_prefix)
 
164
        self.assertEqual('foo\x00', node._common_serialised_prefix)
 
165
 
 
166
    def test_deserialise_multi_line(self):
 
167
        node = self.module._deserialise_leaf_node(
 
168
            "chkleaf:\n0\n2\n2\nfoo\x00\n1\x002\nbar\nbaz\n2\x002\nblarh\n\n",
 
169
            ("sha1:1234",))
 
170
        self.assertEqual(2, len(node))
 
171
        self.assertEqual([(("foo", "1"), "bar\nbaz"),
 
172
                          (("foo", "2"), "blarh\n"),
 
173
                         ], sorted(node.iteritems(None)))
 
174
        self.assertIs(chk_map._unknown, node._search_prefix)
 
175
        self.assertEqual('foo\x00', node._common_serialised_prefix)
 
176
 
 
177
    def test_key_after_map(self):
 
178
        node = self.module._deserialise_leaf_node(
 
179
            "chkleaf:\n10\n1\n0\n\n", ("sha1:1234",))
 
180
        node.map(None, ("foo bar",), "baz quux")
 
181
        self.assertEqual(None, node.key())
 
182
 
 
183
    def test_key_after_unmap(self):
 
184
        node = self.module._deserialise_leaf_node(
 
185
            "chkleaf:\n0\n1\n2\n\nfoo bar\x001\nbaz\nquux\x001\nblarh\n",
 
186
            ("sha1:1234",))
 
187
        node.unmap(None, ("foo bar",))
 
188
        self.assertEqual(None, node.key())
 
189
 
 
190
 
 
191
class TestDeserialiseInternalNode(tests.TestCase):
 
192
 
 
193
    module = None
 
194
 
 
195
    def assertDeserialiseErrors(self, text):
 
196
        self.assertRaises((ValueError, IndexError),
 
197
            self.module._deserialise_internal_node, text, 'not-a-real-sha')
 
198
 
 
199
    def test_raises_on_non_internal(self):
 
200
        self.assertDeserialiseErrors('')
 
201
        self.assertDeserialiseErrors('short\n')
 
202
        self.assertDeserialiseErrors('chknotnode:\n')
 
203
        self.assertDeserialiseErrors('chknode:x\n')
 
204
        self.assertDeserialiseErrors('chknode:\n')
 
205
        self.assertDeserialiseErrors('chknode:\nnotint\n')
 
206
        self.assertDeserialiseErrors('chknode:\n10\n')
 
207
        self.assertDeserialiseErrors('chknode:\n10\n256\n')
 
208
        self.assertDeserialiseErrors('chknode:\n10\n256\n10\n')
 
209
        # no trailing newline
 
210
        self.assertDeserialiseErrors('chknode:\n10\n256\n0\n1\nfo')
 
211
 
 
212
    def test_deserialise_one(self):
 
213
        node = self.module._deserialise_internal_node(
 
214
            "chknode:\n10\n1\n1\n\na\x00sha1:abcd\n", ('sha1:1234',))
 
215
        self.assertIsInstance(node, chk_map.InternalNode)
 
216
        self.assertEqual(1, len(node))
 
217
        self.assertEqual(10, node.maximum_size)
 
218
        self.assertEqual(("sha1:1234",), node.key())
 
219
        self.assertEqual('', node._search_prefix)
 
220
        self.assertEqual({'a': ('sha1:abcd',)}, node._items)
 
221
 
 
222
    def test_deserialise_with_prefix(self):
 
223
        node = self.module._deserialise_internal_node(
 
224
            "chknode:\n10\n1\n1\npref\na\x00sha1:abcd\n", ('sha1:1234',))
 
225
        self.assertIsInstance(node, chk_map.InternalNode)
 
226
        self.assertEqual(1, len(node))
 
227
        self.assertEqual(10, node.maximum_size)
 
228
        self.assertEqual(("sha1:1234",), node.key())
 
229
        self.assertEqual('pref', node._search_prefix)
 
230
        self.assertEqual({'prefa': ('sha1:abcd',)}, node._items)
 
231
 
 
232
        node = self.module._deserialise_internal_node(
 
233
            "chknode:\n10\n1\n1\npref\n\x00sha1:abcd\n", ('sha1:1234',))
 
234
        self.assertIsInstance(node, chk_map.InternalNode)
 
235
        self.assertEqual(1, len(node))
 
236
        self.assertEqual(10, node.maximum_size)
 
237
        self.assertEqual(("sha1:1234",), node.key())
 
238
        self.assertEqual('pref', node._search_prefix)
 
239
        self.assertEqual({'pref': ('sha1:abcd',)}, node._items)
 
240
 
 
241
    def test_deserialise_pref_with_null(self):
 
242
        node = self.module._deserialise_internal_node(
 
243
            "chknode:\n10\n1\n1\npref\x00fo\n\x00sha1:abcd\n", ('sha1:1234',))
 
244
        self.assertIsInstance(node, chk_map.InternalNode)
 
245
        self.assertEqual(1, len(node))
 
246
        self.assertEqual(10, node.maximum_size)
 
247
        self.assertEqual(("sha1:1234",), node.key())
 
248
        self.assertEqual('pref\x00fo', node._search_prefix)
 
249
        self.assertEqual({'pref\x00fo': ('sha1:abcd',)}, node._items)
 
250
 
 
251
    def test_deserialise_with_null_pref(self):
 
252
        node = self.module._deserialise_internal_node(
 
253
            "chknode:\n10\n1\n1\npref\x00fo\n\x00\x00sha1:abcd\n", ('sha1:1234',))
 
254
        self.assertIsInstance(node, chk_map.InternalNode)
 
255
        self.assertEqual(1, len(node))
 
256
        self.assertEqual(10, node.maximum_size)
 
257
        self.assertEqual(("sha1:1234",), node.key())
 
258
        self.assertEqual('pref\x00fo', node._search_prefix)
 
259
        self.assertEqual({'pref\x00fo\x00': ('sha1:abcd',)}, node._items)