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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
|
#!/usr/bin/env python -O
""" Script to test database capabilities and the DB-API interface
for functionality and memory leaks.
Adapted from a script by M-A Lemburg.
"""
from time import time
import array
import unittest
from configdb import connection_factory
class DatabaseTest(unittest.TestCase):
db_module = None
connect_args = ()
connect_kwargs = dict()
create_table_extra = ''
rows = 10
debug = False
def setUp(self):
import gc
db = connection_factory(**self.connect_kwargs)
self.connection = db
self.cursor = db.cursor()
# TODO: this needs to be re-evaluated for Python 3
self.BLOBText = ''.join([chr(i) for i in range(256)] * 100);
self.BLOBUText = u''.join([unichr(i) for i in range(16384)])
self.BLOBBinary = self.db_module.Binary(''.join([chr(i) for i in range(256)] * 16))
leak_test = True
def tearDown(self):
if self.leak_test:
import gc
del self.cursor
orphans = gc.collect()
self.failIf(orphans, "%d orphaned objects found after deleting cursor" % orphans)
del self.connection
orphans = gc.collect()
self.failIf(orphans, "%d orphaned objects found after deleting connection" % orphans)
def table_exists(self, name):
try:
self.cursor.execute('select * from %s where 1=0' % name)
except:
return False
else:
return True
def quote_identifier(self, ident):
return '"%s"' % ident
def new_table_name(self):
i = id(self.cursor)
while True:
name = self.quote_identifier('tb%08x' % i)
if not self.table_exists(name):
return name
i = i + 1
def create_table(self, columndefs):
""" Create a table using a list of column definitions given in
columndefs.
generator must be a function taking arguments (row_number,
col_number) returning a suitable data object for insertion
into the table.
"""
self.table = self.new_table_name()
self.cursor.execute('CREATE TABLE %s (%s) %s' %
(self.table,
',\n'.join(columndefs),
self.create_table_extra))
def check_data_integrity(self, columndefs, generator):
# insert
self.create_table(columndefs)
insert_statement = ('INSERT INTO %s VALUES (%s)' %
(self.table,
','.join(['%s'] * len(columndefs))))
data = [ [ generator(i,j) for j in range(len(columndefs)) ]
for i in range(self.rows) ]
self.cursor.executemany(insert_statement, data)
self.connection.commit()
# verify
self.cursor.execute('select * from %s' % self.table)
l = self.cursor.fetchall()
self.assertEquals(len(l), self.rows)
try:
for i in range(self.rows):
for j in range(len(columndefs)):
self.assertEquals(l[i][j], generator(i,j))
finally:
if not self.debug:
self.cursor.execute('drop table %s' % (self.table))
def test_transactions(self):
columndefs = ( 'col1 INT', 'col2 VARCHAR(255)')
def generator(row, col):
if col == 0: return row
else: return ('%i' % (row%10))*255
self.create_table(columndefs)
insert_statement = ('INSERT INTO %s VALUES (%s)' %
(self.table,
','.join(['%s'] * len(columndefs))))
data = [ [ generator(i,j) for j in range(len(columndefs)) ]
for i in range(self.rows) ]
self.cursor.executemany(insert_statement, data)
# verify
self.connection.commit()
self.cursor.execute('select * from %s' % self.table)
l = self.cursor.fetchall()
self.assertEquals(len(l), self.rows)
for i in range(self.rows):
for j in range(len(columndefs)):
self.assertEquals(l[i][j], generator(i,j))
delete_statement = 'delete from %s where col1=%%s' % self.table
self.cursor.execute(delete_statement, (0,))
self.cursor.execute('select col1 from %s where col1=%s' % \
(self.table, 0))
l = self.cursor.fetchall()
self.assertFalse(l, "DELETE didn't work")
self.connection.rollback()
self.cursor.execute('select col1 from %s where col1=%s' % \
(self.table, 0))
l = self.cursor.fetchall()
self.assertTrue(len(l) == 1, "ROLLBACK didn't work")
self.cursor.execute('drop table %s' % (self.table))
def test_truncation(self):
columndefs = ( 'col1 INT', 'col2 VARCHAR(255)')
def generator(row, col):
if col == 0: return row
else: return ('%i' % (row%10))*((255-self.rows/2)+row)
self.create_table(columndefs)
insert_statement = ('INSERT INTO %s VALUES (%s)' %
(self.table,
','.join(['%s'] * len(columndefs))))
try:
self.cursor.execute(insert_statement, (0, '0'*256))
except self.connection.DataError:
pass
else:
self.fail("Over-long column did not generate warnings/exception with single insert")
self.connection.rollback()
try:
for i in range(self.rows):
data = []
for j in range(len(columndefs)):
data.append(generator(i,j))
self.cursor.execute(insert_statement,tuple(data))
except self.connection.DataError:
pass
else:
self.fail("Over-long columns did not generate warnings/exception with execute()")
self.connection.rollback()
try:
data = [ [ generator(i,j) for j in range(len(columndefs)) ]
for i in range(self.rows) ]
self.cursor.executemany(insert_statement, data)
except self.connection.DataError:
pass
else:
self.fail("Over-long columns did not generate warnings/exception with executemany()")
self.connection.rollback()
self.cursor.execute('drop table %s' % (self.table))
def test_CHAR(self):
# Character data
def generator(row,col):
return ('%i' % ((row+col) % 10)) * 255
self.check_data_integrity(
('col1 char(255)','col2 char(255)'),
generator)
def test_INT(self):
# Number data
def generator(row,col):
return row*row
self.check_data_integrity(
('col1 INT',),
generator)
def test_DECIMAL(self):
# DECIMAL
def generator(row,col):
from decimal import Decimal
return Decimal("%d.%02d" % (row, col))
self.check_data_integrity(
('col1 DECIMAL(5,2)',),
generator)
def test_DATE(self):
ticks = time()
def generator(row,col):
return self.db_module.DateFromTicks(ticks+row*86400-col*1313)
self.check_data_integrity(
('col1 DATE',),
generator)
def test_TIME(self):
ticks = time()
def generator(row,col):
return self.db_module.TimeFromTicks(ticks+row*86400-col*1313)
self.check_data_integrity(
('col1 TIME',),
generator)
def test_DATETIME(self):
ticks = time()
def generator(row,col):
return self.db_module.TimestampFromTicks(ticks+row*86400-col*1313)
self.check_data_integrity(
('col1 DATETIME',),
generator)
def test_TIMESTAMP(self):
ticks = time()
def generator(row,col):
return self.db_module.TimestampFromTicks(ticks+row*86400-col*1313)
self.check_data_integrity(
('col1 TIMESTAMP',),
generator)
def test_fractional_TIMESTAMP(self):
ticks = time()
def generator(row,col):
return self.db_module.TimestampFromTicks(ticks+row*86400-col*1313+row*0.7*col/3.0)
self.check_data_integrity(
('col1 TIMESTAMP',),
generator)
def test_LONG(self):
def generator(row,col):
if col == 0:
return row
else:
return self.BLOBUText # 'BLOB Text ' * 1024
self.check_data_integrity(
('col1 INT','col2 LONG'),
generator)
def test_TEXT(self):
def generator(row,col):
return self.BLOBUText # 'BLOB Text ' * 1024
self.check_data_integrity(
('col2 TEXT',),
generator)
def test_LONG_BYTE(self):
def generator(row,col):
if col == 0:
return row
else:
return self.BLOBBinary # 'BLOB\000Binary ' * 1024
self.check_data_integrity(
('col1 INT','col2 LONG BYTE'),
generator)
def test_BLOB(self):
def generator(row,col):
if col == 0:
return row
else:
return self.BLOBBinary # 'BLOB\000Binary ' * 1024
self.check_data_integrity(
('col1 INT','col2 BLOB'),
generator)
|
