1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
import unittest
import dbm
import shelve
import glob
import pickle
import os
from test import support
from test.support import os_helper
from collections.abc import MutableMapping
from test.test_dbm import dbm_iterator
def L1(s):
return s.decode("latin-1")
class byteskeydict(MutableMapping):
"Mapping that supports bytes keys"
def __init__(self):
self.d = {}
def __getitem__(self, key):
return self.d[L1(key)]
def __setitem__(self, key, value):
self.d[L1(key)] = value
def __delitem__(self, key):
del self.d[L1(key)]
def __len__(self):
return len(self.d)
def iterkeys(self):
for k in self.d.keys():
yield k.encode("latin-1")
__iter__ = iterkeys
def keys(self):
return list(self.iterkeys())
def copy(self):
return byteskeydict(self.d)
class TestCase(unittest.TestCase):
dirname = os_helper.TESTFN
fn = os.path.join(os_helper.TESTFN, "shelftemp.db")
def test_close(self):
d1 = {}
s = shelve.Shelf(d1, protocol=2, writeback=False)
s['key1'] = [1,2,3,4]
self.assertEqual(s['key1'], [1,2,3,4])
self.assertEqual(len(s), 1)
s.close()
self.assertRaises(ValueError, len, s)
try:
s['key1']
except ValueError:
pass
else:
self.fail('Closed shelf should not find a key')
def test_open_template(self, filename=None, protocol=None):
os.mkdir(self.dirname)
self.addCleanup(os_helper.rmtree, self.dirname)
s = shelve.open(filename=filename if filename is not None else self.fn,
protocol=protocol)
try:
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
finally:
s.close()
def test_ascii_file_shelf(self):
self.test_open_template(protocol=0)
def test_binary_file_shelf(self):
self.test_open_template(protocol=1)
def test_proto2_file_shelf(self):
self.test_open_template(protocol=2)
def test_pathlib_path_file_shelf(self):
self.test_open_template(filename=os_helper.FakePath(self.fn))
def test_bytes_path_file_shelf(self):
self.test_open_template(filename=os.fsencode(self.fn))
def test_pathlib_bytes_path_file_shelf(self):
self.test_open_template(filename=os_helper.FakePath(os.fsencode(self.fn)))
def test_in_memory_shelf(self):
d1 = byteskeydict()
with shelve.Shelf(d1, protocol=0) as s:
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
d2 = byteskeydict()
with shelve.Shelf(d2, protocol=1) as s:
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
self.assertEqual(len(d1), 1)
self.assertEqual(len(d2), 1)
self.assertNotEqual(d1.items(), d2.items())
def test_mutable_entry(self):
d1 = byteskeydict()
with shelve.Shelf(d1, protocol=2, writeback=False) as s:
s['key1'] = [1,2,3,4]
self.assertEqual(s['key1'], [1,2,3,4])
s['key1'].append(5)
self.assertEqual(s['key1'], [1,2,3,4])
d2 = byteskeydict()
with shelve.Shelf(d2, protocol=2, writeback=True) as s:
s['key1'] = [1,2,3,4]
self.assertEqual(s['key1'], [1,2,3,4])
s['key1'].append(5)
self.assertEqual(s['key1'], [1,2,3,4,5])
self.assertEqual(len(d1), 1)
self.assertEqual(len(d2), 1)
def test_keyencoding(self):
d = {}
key = 'Pöp'
# the default keyencoding is utf-8
shelve.Shelf(d)[key] = [1]
self.assertIn(key.encode('utf-8'), d)
# but a different one can be given
shelve.Shelf(d, keyencoding='latin-1')[key] = [1]
self.assertIn(key.encode('latin-1'), d)
# with all consequences
s = shelve.Shelf(d, keyencoding='ascii')
self.assertRaises(UnicodeEncodeError, s.__setitem__, key, [1])
def test_writeback_also_writes_immediately(self):
# Issue 5754
d = {}
key = 'key'
encodedkey = key.encode('utf-8')
with shelve.Shelf(d, writeback=True) as s:
s[key] = [1]
p1 = d[encodedkey] # Will give a KeyError if backing store not updated
s['key'].append(2)
p2 = d[encodedkey]
self.assertNotEqual(p1, p2) # Write creates new object in store
def test_with(self):
d1 = {}
with shelve.Shelf(d1, protocol=2, writeback=False) as s:
s['key1'] = [1,2,3,4]
self.assertEqual(s['key1'], [1,2,3,4])
self.assertEqual(len(s), 1)
self.assertRaises(ValueError, len, s)
try:
s['key1']
except ValueError:
pass
else:
self.fail('Closed shelf should not find a key')
def test_default_protocol(self):
with shelve.Shelf({}) as s:
self.assertEqual(s._protocol, pickle.DEFAULT_PROTOCOL)
class TestShelveBase:
type2test = shelve.Shelf
def _reference(self):
return {"key1":"value1", "key2":2, "key3":(1,2,3)}
class TestShelveInMemBase(TestShelveBase):
def _empty_mapping(self):
return shelve.Shelf(byteskeydict(), **self._args)
class TestShelveFileBase(TestShelveBase):
counter = 0
def _empty_mapping(self):
self.counter += 1
x = shelve.open(self.base_path + str(self.counter), **self._args)
self.addCleanup(x.close)
return x
def setUp(self):
dirname = os_helper.TESTFN
os.mkdir(dirname)
self.addCleanup(os_helper.rmtree, dirname)
self.base_path = os.path.join(dirname, "shelftemp.db")
self.addCleanup(setattr, dbm, '_defaultmod', dbm._defaultmod)
dbm._defaultmod = self.dbm_mod
from test import mapping_tests
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
bases = (TestShelveInMemBase, mapping_tests.BasicTestMappingProtocol)
name = f'TestProto{proto}MemShelve'
globals()[name] = type(name, bases,
{'_args': {'protocol': proto}})
bases = (TestShelveFileBase, mapping_tests.BasicTestMappingProtocol)
for dbm_mod in dbm_iterator():
assert dbm_mod.__name__.startswith('dbm.')
suffix = dbm_mod.__name__[4:]
name = f'TestProto{proto}File_{suffix}Shelve'
globals()[name] = type(name, bases,
{'dbm_mod': dbm_mod, '_args': {'protocol': proto}})
if __name__ == "__main__":
unittest.main()
|
