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https://github.com/psycopg/psycopg2.git
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fcc083dc12
There is no need to import testutils.unittest instead of simply unittest. They are simple aliases. Use system unittest to be more regular, consistent as well as idiomatic with the wider Python community.
223 lines
7.2 KiB
Python
Executable File
223 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 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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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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from select import select
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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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