/usr/lib/python2.7/dist-packages/psycopg2/tests/test_with.py is in python-psycopg2 2.6.2-1.
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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 | #!/usr/bin/env python
# test_ctxman.py - unit test for connection and cursor used as context manager
#
# Copyright (C) 2012 Daniele Varrazzo <daniele.varrazzo@gmail.com>
#
# psycopg2 is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# In addition, as a special exception, the copyright holders give
# permission to link this program with the OpenSSL library (or with
# modified versions of OpenSSL that use the same license as OpenSSL),
# and distribute linked combinations including the two.
#
# You must obey the GNU Lesser General Public License in all respects for
# all of the code used other than OpenSSL.
#
# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
# License for more details.
from __future__ import with_statement
import psycopg2
import psycopg2.extensions as ext
from testutils import unittest, ConnectingTestCase
class WithTestCase(ConnectingTestCase):
def setUp(self):
ConnectingTestCase.setUp(self)
curs = self.conn.cursor()
try:
curs.execute("delete from test_with")
self.conn.commit()
except psycopg2.ProgrammingError:
# assume table doesn't exist
self.conn.rollback()
curs.execute("create table test_with (id integer primary key)")
self.conn.commit()
class WithConnectionTestCase(WithTestCase):
def test_with_ok(self):
with self.conn as conn:
self.assert_(self.conn is conn)
self.assertEqual(conn.status, ext.STATUS_READY)
curs = conn.cursor()
curs.execute("insert into test_with values (1)")
self.assertEqual(conn.status, ext.STATUS_BEGIN)
self.assertEqual(self.conn.status, ext.STATUS_READY)
self.assert_(not self.conn.closed)
curs = self.conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [(1,)])
def test_with_connect_idiom(self):
with self.connect() as conn:
self.assertEqual(conn.status, ext.STATUS_READY)
curs = conn.cursor()
curs.execute("insert into test_with values (2)")
self.assertEqual(conn.status, ext.STATUS_BEGIN)
self.assertEqual(self.conn.status, ext.STATUS_READY)
self.assert_(not self.conn.closed)
curs = self.conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [(2,)])
def test_with_error_db(self):
def f():
with self.conn as conn:
curs = conn.cursor()
curs.execute("insert into test_with values ('a')")
self.assertRaises(psycopg2.DataError, f)
self.assertEqual(self.conn.status, ext.STATUS_READY)
self.assert_(not self.conn.closed)
curs = self.conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [])
def test_with_error_python(self):
def f():
with self.conn as conn:
curs = conn.cursor()
curs.execute("insert into test_with values (3)")
1/0
self.assertRaises(ZeroDivisionError, f)
self.assertEqual(self.conn.status, ext.STATUS_READY)
self.assert_(not self.conn.closed)
curs = self.conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [])
def test_with_closed(self):
def f():
with self.conn:
pass
self.conn.close()
self.assertRaises(psycopg2.InterfaceError, f)
def test_subclass_commit(self):
commits = []
class MyConn(ext.connection):
def commit(self):
commits.append(None)
super(MyConn, self).commit()
with self.connect(connection_factory=MyConn) as conn:
curs = conn.cursor()
curs.execute("insert into test_with values (10)")
self.assertEqual(conn.status, ext.STATUS_READY)
self.assert_(commits)
curs = self.conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [(10,)])
def test_subclass_rollback(self):
rollbacks = []
class MyConn(ext.connection):
def rollback(self):
rollbacks.append(None)
super(MyConn, self).rollback()
try:
with self.connect(connection_factory=MyConn) as conn:
curs = conn.cursor()
curs.execute("insert into test_with values (11)")
1/0
except ZeroDivisionError:
pass
else:
self.assert_("exception not raised")
self.assertEqual(conn.status, ext.STATUS_READY)
self.assert_(rollbacks)
curs = conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [])
class WithCursorTestCase(WithTestCase):
def test_with_ok(self):
with self.conn as conn:
with conn.cursor() as curs:
curs.execute("insert into test_with values (4)")
self.assert_(not curs.closed)
self.assertEqual(self.conn.status, ext.STATUS_BEGIN)
self.assert_(curs.closed)
self.assertEqual(self.conn.status, ext.STATUS_READY)
self.assert_(not self.conn.closed)
curs = self.conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [(4,)])
def test_with_error(self):
try:
with self.conn as conn:
with conn.cursor() as curs:
curs.execute("insert into test_with values (5)")
1/0
except ZeroDivisionError:
pass
self.assertEqual(self.conn.status, ext.STATUS_READY)
self.assert_(not self.conn.closed)
self.assert_(curs.closed)
curs = self.conn.cursor()
curs.execute("select * from test_with")
self.assertEqual(curs.fetchall(), [])
def test_subclass(self):
closes = []
class MyCurs(ext.cursor):
def close(self):
closes.append(None)
super(MyCurs, self).close()
with self.conn.cursor(cursor_factory=MyCurs) as curs:
self.assert_(isinstance(curs, MyCurs))
self.assert_(curs.closed)
self.assert_(closes)
def test_exception_swallow(self):
# bug #262: __exit__ calls cur.close() that hides the exception
# with another error.
try:
with self.conn as conn:
with conn.cursor('named') as cur:
cur.execute("select 1/0")
cur.fetchone()
except psycopg2.DataError, e:
self.assertEqual(e.pgcode, '22012')
else:
self.fail("where is my exception?")
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)
if __name__ == "__main__":
unittest.main()
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