320 lines
10 KiB
Python
Executable File
320 lines
10 KiB
Python
Executable File
#!/usr/bin/env python
|
|
|
|
# test_ctxman.py - unit test for connection and cursor used as context manager
|
|
#
|
|
# Copyright (C) 2012-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
|
|
# Copyright (C) 2020-2021 The Psycopg Team
|
|
#
|
|
# 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.
|
|
|
|
import psycopg2
|
|
import psycopg2.extensions as ext
|
|
|
|
import unittest
|
|
from .testutils import ConnectingTestCase, skip_before_postgres, skip_if_crdb
|
|
|
|
|
|
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().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().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(), [])
|
|
|
|
def test_cant_reenter(self):
|
|
raised_ok = False
|
|
with self.conn:
|
|
try:
|
|
with self.conn:
|
|
pass
|
|
except psycopg2.ProgrammingError:
|
|
raised_ok = True
|
|
|
|
self.assert_(raised_ok)
|
|
|
|
# Still good
|
|
with self.conn:
|
|
pass
|
|
|
|
def test_with_autocommit(self):
|
|
self.conn.autocommit = True
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status, ext.TRANSACTION_STATUS_IDLE
|
|
)
|
|
with self.conn:
|
|
curs = self.conn.cursor()
|
|
curs.execute("insert into test_with values (1)")
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status,
|
|
ext.TRANSACTION_STATUS_INTRANS,
|
|
)
|
|
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status, ext.TRANSACTION_STATUS_IDLE
|
|
)
|
|
curs.execute("select count(*) from test_with")
|
|
self.assertEqual(curs.fetchone()[0], 1)
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status, ext.TRANSACTION_STATUS_IDLE
|
|
)
|
|
|
|
def test_with_autocommit_pyerror(self):
|
|
self.conn.autocommit = True
|
|
raised_ok = False
|
|
try:
|
|
with self.conn:
|
|
curs = self.conn.cursor()
|
|
curs.execute("insert into test_with values (2)")
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status,
|
|
ext.TRANSACTION_STATUS_INTRANS,
|
|
)
|
|
1 / 0
|
|
except ZeroDivisionError:
|
|
raised_ok = True
|
|
|
|
self.assert_(raised_ok)
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status, ext.TRANSACTION_STATUS_IDLE
|
|
)
|
|
curs.execute("select count(*) from test_with")
|
|
self.assertEqual(curs.fetchone()[0], 0)
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status, ext.TRANSACTION_STATUS_IDLE
|
|
)
|
|
|
|
def test_with_autocommit_pgerror(self):
|
|
self.conn.autocommit = True
|
|
raised_ok = False
|
|
try:
|
|
with self.conn:
|
|
curs = self.conn.cursor()
|
|
curs.execute("insert into test_with values (2)")
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status,
|
|
ext.TRANSACTION_STATUS_INTRANS,
|
|
)
|
|
curs.execute("insert into test_with values ('x')")
|
|
except psycopg2.errors.InvalidTextRepresentation:
|
|
raised_ok = True
|
|
|
|
self.assert_(raised_ok)
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status, ext.TRANSACTION_STATUS_IDLE
|
|
)
|
|
curs.execute("select count(*) from test_with")
|
|
self.assertEqual(curs.fetchone()[0], 0)
|
|
self.assertEqual(
|
|
self.conn.info.transaction_status, ext.TRANSACTION_STATUS_IDLE
|
|
)
|
|
|
|
|
|
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().close()
|
|
|
|
with self.conn.cursor(cursor_factory=MyCurs) as curs:
|
|
self.assert_(isinstance(curs, MyCurs))
|
|
|
|
self.assert_(curs.closed)
|
|
self.assert_(closes)
|
|
|
|
@skip_if_crdb("named cursor")
|
|
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 as e:
|
|
self.assertEqual(e.pgcode, '22012')
|
|
else:
|
|
self.fail("where is my exception?")
|
|
|
|
@skip_if_crdb("named cursor")
|
|
@skip_before_postgres(8, 2)
|
|
def test_named_with_noop(self):
|
|
with self.conn.cursor('named'):
|
|
pass
|
|
|
|
|
|
def test_suite():
|
|
return unittest.TestLoader().loadTestsFromName(__name__)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|