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https://github.com/psycopg/psycopg2.git
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d90ad8627d
Allows removing many duplicate imports and better follows PEP8 guidelines: https://www.python.org/dev/peps/pep-0008/#imports > Imports are always put at the top of the file, just after any module > comments and docstrings, and before module globals and constants.
224 lines
7.2 KiB
Python
Executable File
224 lines
7.2 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# test_async_keyword.py - test for objects using 'async' as attribute/param
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#
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# Copyright (C) 2017-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
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#
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# psycopg2 is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# In addition, as a special exception, the copyright holders give
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# permission to link this program with the OpenSSL library (or with
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# modified versions of OpenSSL that use the same license as OpenSSL),
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# and distribute linked combinations including the two.
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#
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# You must obey the GNU Lesser General Public License in all respects for
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# all of the code used other than OpenSSL.
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#
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# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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import time
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from select import select
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import psycopg2
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from psycopg2 import extras
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from .testconfig import dsn
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import unittest
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from .testutils import ConnectingTestCase, skip_before_postgres, slow
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from .test_replication import ReplicationTestCase, skip_repl_if_green
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from psycopg2.extras import LogicalReplicationConnection, StopReplication
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class AsyncTests(ConnectingTestCase):
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def setUp(self):
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ConnectingTestCase.setUp(self)
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self.sync_conn = self.conn
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self.conn = self.connect(async=True)
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self.wait(self.conn)
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curs = self.conn.cursor()
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curs.execute('''
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CREATE TEMPORARY TABLE table1 (
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id int PRIMARY KEY
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)''')
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self.wait(curs)
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def test_connection_setup(self):
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cur = self.conn.cursor()
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sync_cur = self.sync_conn.cursor()
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del cur, sync_cur
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self.assert_(self.conn.async)
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self.assert_(not self.sync_conn.async)
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# the async connection should be autocommit
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self.assert_(self.conn.autocommit)
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# check other properties to be found on the connection
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self.assert_(self.conn.server_version)
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self.assert_(self.conn.protocol_version in (2, 3))
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self.assert_(self.conn.encoding in psycopg2.extensions.encodings)
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def test_async_subclass(self):
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class MyConn(psycopg2.extensions.connection):
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def __init__(self, dsn, async=0):
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psycopg2.extensions.connection.__init__(self, dsn, async=async)
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conn = self.connect(connection_factory=MyConn, async=True)
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self.assert_(isinstance(conn, MyConn))
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self.assert_(conn.async)
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conn.close()
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def test_async_connection_error_message(self):
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try:
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cnn = psycopg2.connect('dbname=thisdatabasedoesntexist', async=True)
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self.wait(cnn)
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except psycopg2.Error as e:
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self.assertNotEqual(str(e), "asynchronous connection failed",
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"connection error reason lost")
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else:
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self.fail("no exception raised")
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class CancelTests(ConnectingTestCase):
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def setUp(self):
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ConnectingTestCase.setUp(self)
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cur = self.conn.cursor()
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cur.execute('''
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CREATE TEMPORARY TABLE table1 (
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id int PRIMARY KEY
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)''')
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self.conn.commit()
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@slow
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@skip_before_postgres(8, 2)
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def test_async_cancel(self):
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async_conn = psycopg2.connect(dsn, async=True)
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self.assertRaises(psycopg2.OperationalError, async_conn.cancel)
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extras.wait_select(async_conn)
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cur = async_conn.cursor()
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cur.execute("select pg_sleep(10)")
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time.sleep(1)
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self.assertTrue(async_conn.isexecuting())
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async_conn.cancel()
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self.assertRaises(psycopg2.extensions.QueryCanceledError,
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extras.wait_select, async_conn)
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cur.execute("select 1")
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extras.wait_select(async_conn)
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self.assertEqual(cur.fetchall(), [(1, )])
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def test_async_connection_cancel(self):
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async_conn = psycopg2.connect(dsn, async=True)
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async_conn.close()
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self.assertTrue(async_conn.closed)
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class ConnectTestCase(unittest.TestCase):
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def setUp(self):
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self.args = None
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def connect_stub(dsn, connection_factory=None, async=False):
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self.args = (dsn, connection_factory, async)
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self._connect_orig = psycopg2._connect
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psycopg2._connect = connect_stub
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def tearDown(self):
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psycopg2._connect = self._connect_orig
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def test_there_has_to_be_something(self):
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self.assertRaises(TypeError, psycopg2.connect)
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self.assertRaises(TypeError, psycopg2.connect,
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connection_factory=lambda dsn, async=False: None)
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self.assertRaises(TypeError, psycopg2.connect,
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async=True)
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def test_factory(self):
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def f(dsn, async=False):
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pass
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psycopg2.connect(database='foo', host='baz', connection_factory=f)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], f)
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self.assertEqual(self.args[2], False)
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psycopg2.connect("dbname=foo host=baz", connection_factory=f)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], f)
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self.assertEqual(self.args[2], False)
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def test_async(self):
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psycopg2.connect(database='foo', host='baz', async=1)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], None)
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self.assert_(self.args[2])
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psycopg2.connect("dbname=foo host=baz", async=True)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], None)
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self.assert_(self.args[2])
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class AsyncReplicationTest(ReplicationTestCase):
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@skip_before_postgres(9, 4) # slots require 9.4
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@skip_repl_if_green
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def test_async_replication(self):
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conn = self.repl_connect(
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connection_factory=LogicalReplicationConnection, async=1)
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if conn is None:
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return
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cur = conn.cursor()
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self.create_replication_slot(cur, output_plugin='test_decoding')
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self.wait(cur)
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cur.start_replication(self.slot)
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self.wait(cur)
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self.make_replication_events()
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self.msg_count = 0
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def consume(msg):
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# just check the methods
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"%s: %s" % (cur.io_timestamp, repr(msg))
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self.msg_count += 1
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if self.msg_count > 3:
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cur.send_feedback(reply=True)
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raise StopReplication()
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cur.send_feedback(flush_lsn=msg.data_start)
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# cannot be used in asynchronous mode
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self.assertRaises(psycopg2.ProgrammingError, cur.consume_stream, consume)
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def process_stream():
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while True:
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msg = cur.read_message()
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if msg:
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consume(msg)
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else:
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select([cur], [], [])
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self.assertRaises(StopReplication, process_stream)
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def test_suite():
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return unittest.TestLoader().loadTestsFromName(__name__)
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if __name__ == "__main__":
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unittest.main()
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