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
|
from test.support import import_helper
from test.support import os_helper
import_helper.import_module("dbm.ndbm") #skip if not supported
import os
import unittest
import dbm.ndbm
from dbm.ndbm import error
class DbmTestCase(unittest.TestCase):
def setUp(self):
self.filename = os_helper.TESTFN
self.d = dbm.ndbm.open(self.filename, 'c')
self.d.close()
def tearDown(self):
for suffix in ['', '.pag', '.dir', '.db']:
os_helper.unlink(self.filename + suffix)
def test_keys(self):
self.d = dbm.ndbm.open(self.filename, 'c')
self.assertEqual(self.d.keys(), [])
self.d['a'] = 'b'
self.d[b'bytes'] = b'data'
self.d['12345678910'] = '019237410982340912840198242'
self.d.keys()
self.assertIn('a', self.d)
self.assertIn(b'a', self.d)
self.assertEqual(self.d[b'bytes'], b'data')
# get() and setdefault() work as in the dict interface
self.assertEqual(self.d.get(b'a'), b'b')
self.assertIsNone(self.d.get(b'xxx'))
self.assertEqual(self.d.get(b'xxx', b'foo'), b'foo')
with self.assertRaises(KeyError):
self.d['xxx']
self.assertEqual(self.d.setdefault(b'xxx', b'foo'), b'foo')
self.assertEqual(self.d[b'xxx'], b'foo')
self.d.close()
def test_empty_value(self):
if dbm.ndbm.library == 'Berkeley DB':
self.skipTest("Berkeley DB doesn't distinguish the empty value "
"from the absent one")
self.d = dbm.ndbm.open(self.filename, 'c')
self.assertEqual(self.d.keys(), [])
self.d['empty'] = ''
self.assertEqual(self.d.keys(), [b'empty'])
self.assertIn(b'empty', self.d)
self.assertEqual(self.d[b'empty'], b'')
self.assertEqual(self.d.get(b'empty'), b'')
self.assertEqual(self.d.setdefault(b'empty'), b'')
self.d.close()
def test_modes(self):
for mode in ['r', 'rw', 'w', 'n']:
try:
self.d = dbm.ndbm.open(self.filename, mode)
self.d.close()
except error:
self.fail()
def test_context_manager(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db["ndbm context manager"] = "context manager"
with dbm.ndbm.open(self.filename, 'r') as db:
self.assertEqual(list(db.keys()), [b"ndbm context manager"])
with self.assertRaises(dbm.ndbm.error) as cm:
db.keys()
self.assertEqual(str(cm.exception),
"DBM object has already been closed")
def test_bytes(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db[b'bytes key \xbd'] = b'bytes value \xbd'
with dbm.ndbm.open(self.filename, 'r') as db:
self.assertEqual(list(db.keys()), [b'bytes key \xbd'])
self.assertTrue(b'bytes key \xbd' in db)
self.assertEqual(db[b'bytes key \xbd'], b'bytes value \xbd')
def test_unicode(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db['Unicode key \U0001f40d'] = 'Unicode value \U0001f40d'
with dbm.ndbm.open(self.filename, 'r') as db:
self.assertEqual(list(db.keys()), ['Unicode key \U0001f40d'.encode()])
self.assertTrue('Unicode key \U0001f40d'.encode() in db)
self.assertTrue('Unicode key \U0001f40d' in db)
self.assertEqual(db['Unicode key \U0001f40d'.encode()],
'Unicode value \U0001f40d'.encode())
self.assertEqual(db['Unicode key \U0001f40d'],
'Unicode value \U0001f40d'.encode())
def test_write_readonly_file(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db[b'bytes key'] = b'bytes value'
with dbm.ndbm.open(self.filename, 'r') as db:
with self.assertRaises(error):
del db[b'not exist key']
with self.assertRaises(error):
del db[b'bytes key']
with self.assertRaises(error):
db[b'not exist key'] = b'not exist value'
@unittest.skipUnless(os_helper.TESTFN_NONASCII,
'requires OS support of non-ASCII encodings')
def test_nonascii_filename(self):
filename = os_helper.TESTFN_NONASCII
for suffix in ['', '.pag', '.dir', '.db']:
self.addCleanup(os_helper.unlink, filename + suffix)
with dbm.ndbm.open(filename, 'c') as db:
db[b'key'] = b'value'
self.assertTrue(any(os.path.exists(filename + suffix)
for suffix in ['', '.pag', '.dir', '.db']))
with dbm.ndbm.open(filename, 'r') as db:
self.assertEqual(list(db.keys()), [b'key'])
self.assertTrue(b'key' in db)
self.assertEqual(db[b'key'], b'value')
def test_nonexisting_file(self):
nonexisting_file = 'nonexisting-file'
with self.assertRaises(dbm.ndbm.error) as cm:
dbm.ndbm.open(nonexisting_file)
self.assertIn(nonexisting_file, str(cm.exception))
self.assertEqual(cm.exception.filename, nonexisting_file)
def test_open_with_pathlib_path(self):
dbm.ndbm.open(os_helper.FakePath(self.filename), "c").close()
def test_open_with_bytes_path(self):
dbm.ndbm.open(os.fsencode(self.filename), "c").close()
def test_open_with_pathlib_bytes_path(self):
dbm.ndbm.open(os_helper.FakePath(os.fsencode(self.filename)), "c").close()
def test_bool_empty(self):
with dbm.ndbm.open(self.filename, 'c') as db:
self.assertFalse(bool(db))
def test_bool_not_empty(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db['a'] = 'b'
self.assertTrue(bool(db))
def test_bool_on_closed_db_raises(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db['a'] = 'b'
self.assertRaises(dbm.ndbm.error, bool, db)
if __name__ == '__main__':
unittest.main()
|
