/usr/lib/python2.7/dist-packages/psycopg2/tests/test_async_keyword.py is in python-psycopg2 2.7.4-1.
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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
# -*- coding: utf-8 -*-
# test_async_keyword.py - test for objects using 'async' as attribute/param
#
# Copyright (C) 2017 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.
import time
import psycopg2
from psycopg2 import extras
from testconfig import dsn
from testutils import ConnectingTestCase, unittest, skip_before_postgres, slow
from test_replication import ReplicationTestCase, skip_repl_if_green
from psycopg2.extras import LogicalReplicationConnection, StopReplication
class AsyncTests(ConnectingTestCase):
def setUp(self):
ConnectingTestCase.setUp(self)
self.sync_conn = self.conn
self.conn = self.connect(async=True)
self.wait(self.conn)
curs = self.conn.cursor()
curs.execute('''
CREATE TEMPORARY TABLE table1 (
id int PRIMARY KEY
)''')
self.wait(curs)
def test_connection_setup(self):
cur = self.conn.cursor()
sync_cur = self.sync_conn.cursor()
del cur, sync_cur
self.assert_(self.conn.async)
self.assert_(not self.sync_conn.async)
# the async connection should be autocommit
self.assert_(self.conn.autocommit)
# check other properties to be found on the connection
self.assert_(self.conn.server_version)
self.assert_(self.conn.protocol_version in (2, 3))
self.assert_(self.conn.encoding in psycopg2.extensions.encodings)
def test_async_subclass(self):
class MyConn(psycopg2.extensions.connection):
def __init__(self, dsn, async=0):
psycopg2.extensions.connection.__init__(self, dsn, async=async)
conn = self.connect(connection_factory=MyConn, async=True)
self.assert_(isinstance(conn, MyConn))
self.assert_(conn.async)
conn.close()
def test_async_connection_error_message(self):
try:
cnn = psycopg2.connect('dbname=thisdatabasedoesntexist', async=True)
self.wait(cnn)
except psycopg2.Error as e:
self.assertNotEqual(str(e), "asynchronous connection failed",
"connection error reason lost")
else:
self.fail("no exception raised")
class CancelTests(ConnectingTestCase):
def setUp(self):
ConnectingTestCase.setUp(self)
cur = self.conn.cursor()
cur.execute('''
CREATE TEMPORARY TABLE table1 (
id int PRIMARY KEY
)''')
self.conn.commit()
@slow
@skip_before_postgres(8, 2)
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(10)")
time.sleep(1)
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)
class ConnectTestCase(unittest.TestCase):
def setUp(self):
self.args = None
def connect_stub(dsn, connection_factory=None, async=False):
self.args = (dsn, connection_factory, async)
self._connect_orig = psycopg2._connect
psycopg2._connect = connect_stub
def tearDown(self):
psycopg2._connect = self._connect_orig
def test_there_has_to_be_something(self):
self.assertRaises(TypeError, psycopg2.connect)
self.assertRaises(TypeError, psycopg2.connect,
connection_factory=lambda dsn, async=False: None)
self.assertRaises(TypeError, psycopg2.connect,
async=True)
def test_factory(self):
def f(dsn, async=False):
pass
psycopg2.connect(database='foo', host='baz', connection_factory=f)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], f)
self.assertEqual(self.args[2], False)
psycopg2.connect("dbname=foo host=baz", connection_factory=f)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], f)
self.assertEqual(self.args[2], False)
def test_async(self):
psycopg2.connect(database='foo', host='baz', async=1)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], None)
self.assert_(self.args[2])
psycopg2.connect("dbname=foo host=baz", async=True)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], None)
self.assert_(self.args[2])
class AsyncReplicationTest(ReplicationTestCase):
@skip_before_postgres(9, 4) # slots require 9.4
@skip_repl_if_green
def test_async_replication(self):
conn = self.repl_connect(
connection_factory=LogicalReplicationConnection, async=1)
if conn is None:
return
cur = conn.cursor()
self.create_replication_slot(cur, output_plugin='test_decoding')
self.wait(cur)
cur.start_replication(self.slot)
self.wait(cur)
self.make_replication_events()
self.msg_count = 0
def consume(msg):
# just check the methods
"%s: %s" % (cur.io_timestamp, repr(msg))
self.msg_count += 1
if self.msg_count > 3:
cur.send_feedback(reply=True)
raise StopReplication()
cur.send_feedback(flush_lsn=msg.data_start)
# cannot be used in asynchronous mode
self.assertRaises(psycopg2.ProgrammingError, cur.consume_stream, consume)
def process_stream():
from select import select
while True:
msg = cur.read_message()
if msg:
consume(msg)
else:
select([cur], [], [])
self.assertRaises(StopReplication, process_stream)
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)
if __name__ == "__main__":
unittest.main()
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