mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-11-23 01:16:34 +03:00
b075017ad9
Pulled the master branch from of Daniele's psycopg branch on github and merged the changes.
115 lines
3.7 KiB
Python
Executable File
115 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# test_cancel.py - unit test for query cancellation
|
|
#
|
|
# Copyright (C) 2010-2011 Jan Urbański <wulczer@wulczer.org>
|
|
#
|
|
# 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 time
|
|
import threading
|
|
|
|
import psycopg2
|
|
import psycopg2.extensions
|
|
from psycopg2 import extras
|
|
|
|
from testconfig import dsn
|
|
from testutils import unittest, skip_if_no_pg_sleep
|
|
|
|
class CancelTests(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.conn = psycopg2.connect(dsn)
|
|
cur = self.conn.cursor()
|
|
cur.execute('''
|
|
CREATE TEMPORARY TABLE table1 (
|
|
id int PRIMARY KEY
|
|
)''')
|
|
self.conn.commit()
|
|
|
|
def tearDown(self):
|
|
self.conn.close()
|
|
|
|
def test_empty_cancel(self):
|
|
self.conn.cancel()
|
|
|
|
@skip_if_no_pg_sleep('conn')
|
|
def test_cancel(self):
|
|
errors = []
|
|
|
|
def neverending(conn):
|
|
cur = conn.cursor()
|
|
try:
|
|
self.assertRaises(psycopg2.extensions.QueryCanceledError,
|
|
cur.execute, "select pg_sleep(60)")
|
|
# make sure the connection still works
|
|
conn.rollback()
|
|
cur.execute("select 1")
|
|
self.assertEqual(cur.fetchall(), [(1, )])
|
|
except Exception, e:
|
|
errors.append(e)
|
|
raise
|
|
|
|
def canceller(conn):
|
|
cur = conn.cursor()
|
|
try:
|
|
conn.cancel()
|
|
except Exception, e:
|
|
errors.append(e)
|
|
raise
|
|
|
|
thread1 = threading.Thread(target=neverending, args=(self.conn, ))
|
|
# wait a bit to make sure that the other thread is already in
|
|
# pg_sleep -- ugly and racy, but the chances are ridiculously low
|
|
thread2 = threading.Timer(0.3, canceller, args=(self.conn, ))
|
|
thread1.start()
|
|
thread2.start()
|
|
thread1.join()
|
|
thread2.join()
|
|
|
|
self.assertEqual(errors, [])
|
|
|
|
@skip_if_no_pg_sleep('conn')
|
|
def test_async_cancel(self):
|
|
async_conn = psycopg2.connect(dsn, async=True)
|
|
self.assertRaises(psycopg2.OperationalError, async_conn.cancel)
|
|
extras.wait_select(async_conn)
|
|
cur = async_conn.cursor()
|
|
cur.execute("select pg_sleep(10000)")
|
|
self.assertTrue(async_conn.isexecuting())
|
|
async_conn.cancel()
|
|
self.assertRaises(psycopg2.extensions.QueryCanceledError,
|
|
extras.wait_select, async_conn)
|
|
cur.execute("select 1")
|
|
extras.wait_select(async_conn)
|
|
self.assertEqual(cur.fetchall(), [(1, )])
|
|
|
|
def test_async_connection_cancel(self):
|
|
async_conn = psycopg2.connect(dsn, async=True)
|
|
async_conn.close()
|
|
self.assertTrue(async_conn.closed)
|
|
|
|
|
|
def test_suite():
|
|
return unittest.TestLoader().loadTestsFromName(__name__)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|