mirror of
https://github.com/psycopg/psycopg2.git
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1068 lines
38 KiB
Python
Executable File
1068 lines
38 KiB
Python
Executable File
#!/usr/bin/env python
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# test_connection.py - unit test for connection attributes
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#
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# Copyright (C) 2008-2011 James Henstridge <james@jamesh.id.au>
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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 os
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import time
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import threading
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from testutils import unittest, decorate_all_tests
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from testutils import skip_before_postgres, skip_after_postgres, skip_if_no_superuser
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from operator import attrgetter
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import psycopg2
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import psycopg2.errorcodes
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import psycopg2.extensions
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from testconfig import dsn, dbname
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class ConnectionTests(unittest.TestCase):
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def setUp(self):
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self.conn = psycopg2.connect(dsn)
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def tearDown(self):
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if not self.conn.closed:
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self.conn.close()
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def test_closed_attribute(self):
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conn = self.conn
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self.assertEqual(conn.closed, False)
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conn.close()
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self.assertEqual(conn.closed, True)
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def test_close_idempotent(self):
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conn = self.conn
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conn.close()
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conn.close()
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self.assert_(conn.closed)
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def test_cursor_closed_attribute(self):
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conn = self.conn
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curs = conn.cursor()
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self.assertEqual(curs.closed, False)
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curs.close()
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self.assertEqual(curs.closed, True)
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# Closing the connection closes the cursor:
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curs = conn.cursor()
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conn.close()
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self.assertEqual(curs.closed, True)
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@skip_before_postgres(8, 4)
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@skip_if_no_superuser
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def test_cleanup_on_badconn_close(self):
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# ticket #148
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conn = self.conn
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cur = conn.cursor()
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try:
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cur.execute("select pg_terminate_backend(pg_backend_pid())")
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except psycopg2.OperationalError, e:
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if e.pgcode != psycopg2.errorcodes.ADMIN_SHUTDOWN:
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raise
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except psycopg2.DatabaseError, e:
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# curiously when disconnected in green mode we get a DatabaseError
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# without pgcode.
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if e.pgcode is not None:
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raise
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self.assertEqual(conn.closed, 2)
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conn.close()
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self.assertEqual(conn.closed, 1)
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def test_reset(self):
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conn = self.conn
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# switch isolation level, then reset
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level = conn.isolation_level
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conn.set_isolation_level(0)
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self.assertEqual(conn.isolation_level, 0)
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conn.reset()
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# now the isolation level should be equal to saved one
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self.assertEqual(conn.isolation_level, level)
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def test_notices(self):
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conn = self.conn
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cur = conn.cursor()
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if self.conn.server_version >= 90300:
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cur.execute("set client_min_messages=debug1")
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cur.execute("create temp table chatty (id serial primary key);")
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self.assertEqual("CREATE TABLE", cur.statusmessage)
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self.assert_(conn.notices)
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def test_notices_consistent_order(self):
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conn = self.conn
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cur = conn.cursor()
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if self.conn.server_version >= 90300:
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cur.execute("set client_min_messages=debug1")
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cur.execute("create temp table table1 (id serial); create temp table table2 (id serial);")
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cur.execute("create temp table table3 (id serial); create temp table table4 (id serial);")
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self.assertEqual(4, len(conn.notices))
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self.assert_('table1' in conn.notices[0])
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self.assert_('table2' in conn.notices[1])
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self.assert_('table3' in conn.notices[2])
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self.assert_('table4' in conn.notices[3])
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def test_notices_limited(self):
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conn = self.conn
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cur = conn.cursor()
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if self.conn.server_version >= 90300:
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cur.execute("set client_min_messages=debug1")
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for i in range(0, 100, 10):
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sql = " ".join(["create temp table table%d (id serial);" % j for j in range(i, i+10)])
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cur.execute(sql)
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self.assertEqual(50, len(conn.notices))
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self.assert_('table50' in conn.notices[0], conn.notices[0])
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self.assert_('table51' in conn.notices[1], conn.notices[1])
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self.assert_('table98' in conn.notices[-2], conn.notices[-2])
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self.assert_('table99' in conn.notices[-1], conn.notices[-1])
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def test_server_version(self):
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self.assert_(self.conn.server_version)
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def test_protocol_version(self):
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self.assert_(self.conn.protocol_version in (2,3),
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self.conn.protocol_version)
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def test_tpc_unsupported(self):
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cnn = self.conn
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if cnn.server_version >= 80100:
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return self.skipTest("tpc is supported")
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self.assertRaises(psycopg2.NotSupportedError,
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cnn.xid, 42, "foo", "bar")
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@skip_before_postgres(8, 2)
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def test_concurrent_execution(self):
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def slave():
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cnn = psycopg2.connect(dsn)
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cur = cnn.cursor()
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cur.execute("select pg_sleep(4)")
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cur.close()
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cnn.close()
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t1 = threading.Thread(target=slave)
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t2 = threading.Thread(target=slave)
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t0 = time.time()
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t1.start()
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t2.start()
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t1.join()
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t2.join()
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self.assert_(time.time() - t0 < 7,
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"something broken in concurrency")
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def test_encoding_name(self):
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self.conn.set_client_encoding("EUC_JP")
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# conn.encoding is 'EUCJP' now.
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cur = self.conn.cursor()
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psycopg2.extensions.register_type(psycopg2.extensions.UNICODE, cur)
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cur.execute("select 'foo'::text;")
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self.assertEqual(cur.fetchone()[0], u'foo')
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def test_connect_nonnormal_envvar(self):
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# We must perform encoding normalization at connection time
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self.conn.close()
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oldenc = os.environ.get('PGCLIENTENCODING')
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os.environ['PGCLIENTENCODING'] = 'utf-8' # malformed spelling
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try:
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self.conn = psycopg2.connect(dsn)
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finally:
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if oldenc is not None:
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os.environ['PGCLIENTENCODING'] = oldenc
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else:
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del os.environ['PGCLIENTENCODING']
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def test_weakref(self):
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from weakref import ref
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import gc
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conn = psycopg2.connect(dsn)
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w = ref(conn)
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conn.close()
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del conn
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gc.collect()
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self.assert_(w() is None)
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def test_commit_concurrency(self):
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# The problem is the one reported in ticket #103. Because of bad
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# status check, we commit even when a commit is already on its way.
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# We can detect this condition by the warnings.
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conn = self.conn
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notices = []
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stop = []
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def committer():
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while not stop:
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conn.commit()
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while conn.notices:
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notices.append((2, conn.notices.pop()))
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cur = conn.cursor()
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t1 = threading.Thread(target=committer)
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t1.start()
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i = 1
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for i in range(1000):
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cur.execute("select %s;",(i,))
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conn.commit()
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while conn.notices:
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notices.append((1, conn.notices.pop()))
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# Stop the committer thread
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stop.append(True)
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self.assert_(not notices, "%d notices raised" % len(notices))
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class IsolationLevelsTestCase(unittest.TestCase):
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def setUp(self):
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self._conns = []
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conn = self.connect()
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cur = conn.cursor()
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try:
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cur.execute("drop table isolevel;")
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except psycopg2.ProgrammingError:
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conn.rollback()
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cur.execute("create table isolevel (id integer);")
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conn.commit()
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conn.close()
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def tearDown(self):
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# close the connections used in the test
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for conn in self._conns:
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if not conn.closed:
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conn.close()
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def connect(self):
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conn = psycopg2.connect(dsn)
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self._conns.append(conn)
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return conn
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def test_isolation_level(self):
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conn = self.connect()
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self.assertEqual(
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conn.isolation_level,
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psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
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def test_encoding(self):
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conn = self.connect()
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self.assert_(conn.encoding in psycopg2.extensions.encodings)
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def test_set_isolation_level(self):
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conn = self.connect()
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curs = conn.cursor()
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levels = [
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(None, psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT),
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('read uncommitted', psycopg2.extensions.ISOLATION_LEVEL_READ_UNCOMMITTED),
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('read committed', psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED),
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('repeatable read', psycopg2.extensions.ISOLATION_LEVEL_REPEATABLE_READ),
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('serializable', psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE),
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]
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for name, level in levels:
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conn.set_isolation_level(level)
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# the only values available on prehistoric PG versions
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if conn.server_version < 80000:
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if level in (
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psycopg2.extensions.ISOLATION_LEVEL_READ_UNCOMMITTED,
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psycopg2.extensions.ISOLATION_LEVEL_REPEATABLE_READ):
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name, level = levels[levels.index((name, level)) + 1]
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self.assertEqual(conn.isolation_level, level)
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curs.execute('show transaction_isolation;')
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got_name = curs.fetchone()[0]
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if name is None:
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curs.execute('show default_transaction_isolation;')
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name = curs.fetchone()[0]
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self.assertEqual(name, got_name)
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conn.commit()
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self.assertRaises(ValueError, conn.set_isolation_level, -1)
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self.assertRaises(ValueError, conn.set_isolation_level, 5)
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def test_set_isolation_level_abort(self):
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conn = self.connect()
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cur = conn.cursor()
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self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
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conn.get_transaction_status())
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cur.execute("insert into isolevel values (10);")
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self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_INTRANS,
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conn.get_transaction_status())
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conn.set_isolation_level(
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psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
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self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
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conn.get_transaction_status())
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cur.execute("select count(*) from isolevel;")
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self.assertEqual(0, cur.fetchone()[0])
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cur.execute("insert into isolevel values (10);")
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self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_INTRANS,
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conn.get_transaction_status())
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conn.set_isolation_level(
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psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
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self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
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conn.get_transaction_status())
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cur.execute("select count(*) from isolevel;")
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self.assertEqual(0, cur.fetchone()[0])
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cur.execute("insert into isolevel values (10);")
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self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
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conn.get_transaction_status())
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conn.set_isolation_level(
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psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
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self.assertEqual(psycopg2.extensions.TRANSACTION_STATUS_IDLE,
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conn.get_transaction_status())
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cur.execute("select count(*) from isolevel;")
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self.assertEqual(1, cur.fetchone()[0])
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def test_isolation_level_autocommit(self):
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cnn1 = self.connect()
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cnn2 = self.connect()
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cnn2.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
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cur1 = cnn1.cursor()
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(0, cur1.fetchone()[0])
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cnn1.commit()
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cur2 = cnn2.cursor()
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cur2.execute("insert into isolevel values (10);")
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(1, cur1.fetchone()[0])
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def test_isolation_level_read_committed(self):
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cnn1 = self.connect()
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cnn2 = self.connect()
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cnn2.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
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cur1 = cnn1.cursor()
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(0, cur1.fetchone()[0])
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cnn1.commit()
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cur2 = cnn2.cursor()
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cur2.execute("insert into isolevel values (10);")
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cur1.execute("insert into isolevel values (20);")
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cur2.execute("select count(*) from isolevel;")
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self.assertEqual(1, cur2.fetchone()[0])
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cnn1.commit()
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cur2.execute("select count(*) from isolevel;")
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self.assertEqual(2, cur2.fetchone()[0])
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(1, cur1.fetchone()[0])
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cnn2.commit()
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(2, cur1.fetchone()[0])
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def test_isolation_level_serializable(self):
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cnn1 = self.connect()
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cnn2 = self.connect()
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cnn2.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
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cur1 = cnn1.cursor()
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(0, cur1.fetchone()[0])
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cnn1.commit()
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cur2 = cnn2.cursor()
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cur2.execute("insert into isolevel values (10);")
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cur1.execute("insert into isolevel values (20);")
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cur2.execute("select count(*) from isolevel;")
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self.assertEqual(1, cur2.fetchone()[0])
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cnn1.commit()
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cur2.execute("select count(*) from isolevel;")
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self.assertEqual(1, cur2.fetchone()[0])
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(1, cur1.fetchone()[0])
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cnn2.commit()
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cur1.execute("select count(*) from isolevel;")
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self.assertEqual(2, cur1.fetchone()[0])
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cur2.execute("select count(*) from isolevel;")
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self.assertEqual(2, cur2.fetchone()[0])
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def test_isolation_level_closed(self):
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cnn = self.connect()
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cnn.close()
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self.assertRaises(psycopg2.InterfaceError, getattr,
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cnn, 'isolation_level')
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self.assertRaises(psycopg2.InterfaceError,
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cnn.set_isolation_level, 0)
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self.assertRaises(psycopg2.InterfaceError,
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cnn.set_isolation_level, 1)
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class ConnectionTwoPhaseTests(unittest.TestCase):
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def setUp(self):
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self._conns = []
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self.make_test_table()
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self.clear_test_xacts()
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def tearDown(self):
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self.clear_test_xacts()
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# close the connections used in the test
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for conn in self._conns:
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if not conn.closed:
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conn.close()
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def clear_test_xacts(self):
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"""Rollback all the prepared transaction in the testing db."""
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cnn = self.connect()
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cnn.set_isolation_level(0)
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cur = cnn.cursor()
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try:
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cur.execute(
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"select gid from pg_prepared_xacts where database = %s",
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(dbname,))
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except psycopg2.ProgrammingError:
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cnn.rollback()
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cnn.close()
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return
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gids = [ r[0] for r in cur ]
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for gid in gids:
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cur.execute("rollback prepared %s;", (gid,))
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cnn.close()
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def make_test_table(self):
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cnn = self.connect()
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cur = cnn.cursor()
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try:
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cur.execute("DROP TABLE test_tpc;")
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except psycopg2.ProgrammingError:
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cnn.rollback()
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cur.execute("CREATE TABLE test_tpc (data text);")
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cnn.commit()
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cnn.close()
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def count_xacts(self):
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"""Return the number of prepared xacts currently in the test db."""
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cnn = self.connect()
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cur = cnn.cursor()
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cur.execute("""
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select count(*) from pg_prepared_xacts
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where database = %s;""",
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(dbname,))
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rv = cur.fetchone()[0]
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cnn.close()
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return rv
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def count_test_records(self):
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"""Return the number of records in the test table."""
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cnn = self.connect()
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cur = cnn.cursor()
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cur.execute("select count(*) from test_tpc;")
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rv = cur.fetchone()[0]
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cnn.close()
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return rv
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def connect(self, **kwargs):
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conn = psycopg2.connect(dsn, **kwargs)
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self._conns.append(conn)
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return conn
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def test_tpc_commit(self):
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
|
|
cnn.tpc_begin(xid)
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
|
|
cur = cnn.cursor()
|
|
cur.execute("insert into test_tpc values ('test_tpc_commit');")
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_prepare()
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_PREPARED)
|
|
self.assertEqual(1, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_commit()
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(1, self.count_test_records())
|
|
|
|
def test_tpc_commit_one_phase(self):
|
|
cnn = self.connect()
|
|
xid = cnn.xid(1, "gtrid", "bqual")
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
|
|
cnn.tpc_begin(xid)
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
|
|
cur = cnn.cursor()
|
|
cur.execute("insert into test_tpc values ('test_tpc_commit_1p');")
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_commit()
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(1, self.count_test_records())
|
|
|
|
def test_tpc_commit_recovered(self):
|
|
cnn = self.connect()
|
|
xid = cnn.xid(1, "gtrid", "bqual")
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
|
|
cnn.tpc_begin(xid)
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
|
|
cur = cnn.cursor()
|
|
cur.execute("insert into test_tpc values ('test_tpc_commit_rec');")
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_prepare()
|
|
cnn.close()
|
|
self.assertEqual(1, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn = self.connect()
|
|
xid = cnn.xid(1, "gtrid", "bqual")
|
|
cnn.tpc_commit(xid)
|
|
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(1, self.count_test_records())
|
|
|
|
def test_tpc_rollback(self):
|
|
cnn = self.connect()
|
|
xid = cnn.xid(1, "gtrid", "bqual")
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
|
|
cnn.tpc_begin(xid)
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
|
|
cur = cnn.cursor()
|
|
cur.execute("insert into test_tpc values ('test_tpc_rollback');")
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_prepare()
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_PREPARED)
|
|
self.assertEqual(1, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_rollback()
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
def test_tpc_rollback_one_phase(self):
|
|
cnn = self.connect()
|
|
xid = cnn.xid(1, "gtrid", "bqual")
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
|
|
cnn.tpc_begin(xid)
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
|
|
cur = cnn.cursor()
|
|
cur.execute("insert into test_tpc values ('test_tpc_rollback_1p');")
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_rollback()
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
def test_tpc_rollback_recovered(self):
|
|
cnn = self.connect()
|
|
xid = cnn.xid(1, "gtrid", "bqual")
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
|
|
cnn.tpc_begin(xid)
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
|
|
cur = cnn.cursor()
|
|
cur.execute("insert into test_tpc values ('test_tpc_commit_rec');")
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn.tpc_prepare()
|
|
cnn.close()
|
|
self.assertEqual(1, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
cnn = self.connect()
|
|
xid = cnn.xid(1, "gtrid", "bqual")
|
|
cnn.tpc_rollback(xid)
|
|
|
|
self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(0, self.count_xacts())
|
|
self.assertEqual(0, self.count_test_records())
|
|
|
|
def test_status_after_recover(self):
|
|
cnn = self.connect()
|
|
self.assertEqual(psycopg2.extensions.STATUS_READY, cnn.status)
|
|
xns = cnn.tpc_recover()
|
|
self.assertEqual(psycopg2.extensions.STATUS_READY, cnn.status)
|
|
|
|
cur = cnn.cursor()
|
|
cur.execute("select 1")
|
|
self.assertEqual(psycopg2.extensions.STATUS_BEGIN, cnn.status)
|
|
xns = cnn.tpc_recover()
|
|
self.assertEqual(psycopg2.extensions.STATUS_BEGIN, cnn.status)
|
|
|
|
def test_recovered_xids(self):
|
|
# insert a few test xns
|
|
cnn = self.connect()
|
|
cnn.set_isolation_level(0)
|
|
cur = cnn.cursor()
|
|
cur.execute("begin; prepare transaction '1-foo';")
|
|
cur.execute("begin; prepare transaction '2-bar';")
|
|
|
|
# read the values to return
|
|
cur.execute("""
|
|
select gid, prepared, owner, database
|
|
from pg_prepared_xacts
|
|
where database = %s;""",
|
|
(dbname,))
|
|
okvals = cur.fetchall()
|
|
okvals.sort()
|
|
|
|
cnn = self.connect()
|
|
xids = cnn.tpc_recover()
|
|
xids = [ xid for xid in xids if xid.database == dbname ]
|
|
xids.sort(key=attrgetter('gtrid'))
|
|
|
|
# check the values returned
|
|
self.assertEqual(len(okvals), len(xids))
|
|
for (xid, (gid, prepared, owner, database)) in zip (xids, okvals):
|
|
self.assertEqual(xid.gtrid, gid)
|
|
self.assertEqual(xid.prepared, prepared)
|
|
self.assertEqual(xid.owner, owner)
|
|
self.assertEqual(xid.database, database)
|
|
|
|
def test_xid_encoding(self):
|
|
cnn = self.connect()
|
|
xid = cnn.xid(42, "gtrid", "bqual")
|
|
cnn.tpc_begin(xid)
|
|
cnn.tpc_prepare()
|
|
|
|
cnn = self.connect()
|
|
cur = cnn.cursor()
|
|
cur.execute("select gid from pg_prepared_xacts where database = %s;",
|
|
(dbname,))
|
|
self.assertEqual('42_Z3RyaWQ=_YnF1YWw=', cur.fetchone()[0])
|
|
|
|
def test_xid_roundtrip(self):
|
|
for fid, gtrid, bqual in [
|
|
(0, "", ""),
|
|
(42, "gtrid", "bqual"),
|
|
(0x7fffffff, "x" * 64, "y" * 64),
|
|
]:
|
|
cnn = self.connect()
|
|
xid = cnn.xid(fid, gtrid, bqual)
|
|
cnn.tpc_begin(xid)
|
|
cnn.tpc_prepare()
|
|
cnn.close()
|
|
|
|
cnn = self.connect()
|
|
xids = [ xid for xid in cnn.tpc_recover()
|
|
if xid.database == dbname ]
|
|
self.assertEqual(1, len(xids))
|
|
xid = xids[0]
|
|
self.assertEqual(xid.format_id, fid)
|
|
self.assertEqual(xid.gtrid, gtrid)
|
|
self.assertEqual(xid.bqual, bqual)
|
|
|
|
cnn.tpc_rollback(xid)
|
|
|
|
def test_unparsed_roundtrip(self):
|
|
for tid in [
|
|
'',
|
|
'hello, world!',
|
|
'x' * 199, # PostgreSQL's limit in transaction id length
|
|
]:
|
|
cnn = self.connect()
|
|
cnn.tpc_begin(tid)
|
|
cnn.tpc_prepare()
|
|
cnn.close()
|
|
|
|
cnn = self.connect()
|
|
xids = [ xid for xid in cnn.tpc_recover()
|
|
if xid.database == dbname ]
|
|
self.assertEqual(1, len(xids))
|
|
xid = xids[0]
|
|
self.assertEqual(xid.format_id, None)
|
|
self.assertEqual(xid.gtrid, tid)
|
|
self.assertEqual(xid.bqual, None)
|
|
|
|
cnn.tpc_rollback(xid)
|
|
|
|
def test_xid_construction(self):
|
|
from psycopg2.extensions import Xid
|
|
|
|
x1 = Xid(74, 'foo', 'bar')
|
|
self.assertEqual(74, x1.format_id)
|
|
self.assertEqual('foo', x1.gtrid)
|
|
self.assertEqual('bar', x1.bqual)
|
|
|
|
def test_xid_from_string(self):
|
|
from psycopg2.extensions import Xid
|
|
|
|
x2 = Xid.from_string('42_Z3RyaWQ=_YnF1YWw=')
|
|
self.assertEqual(42, x2.format_id)
|
|
self.assertEqual('gtrid', x2.gtrid)
|
|
self.assertEqual('bqual', x2.bqual)
|
|
|
|
x3 = Xid.from_string('99_xxx_yyy')
|
|
self.assertEqual(None, x3.format_id)
|
|
self.assertEqual('99_xxx_yyy', x3.gtrid)
|
|
self.assertEqual(None, x3.bqual)
|
|
|
|
def test_xid_to_string(self):
|
|
from psycopg2.extensions import Xid
|
|
|
|
x1 = Xid.from_string('42_Z3RyaWQ=_YnF1YWw=')
|
|
self.assertEqual(str(x1), '42_Z3RyaWQ=_YnF1YWw=')
|
|
|
|
x2 = Xid.from_string('99_xxx_yyy')
|
|
self.assertEqual(str(x2), '99_xxx_yyy')
|
|
|
|
def test_xid_unicode(self):
|
|
cnn = self.connect()
|
|
x1 = cnn.xid(10, u'uni', u'code')
|
|
cnn.tpc_begin(x1)
|
|
cnn.tpc_prepare()
|
|
cnn.reset()
|
|
xid = [ xid for xid in cnn.tpc_recover()
|
|
if xid.database == dbname ][0]
|
|
self.assertEqual(10, xid.format_id)
|
|
self.assertEqual('uni', xid.gtrid)
|
|
self.assertEqual('code', xid.bqual)
|
|
|
|
def test_xid_unicode_unparsed(self):
|
|
# We don't expect people shooting snowmen as transaction ids,
|
|
# so if something explodes in an encode error I don't mind.
|
|
# Let's just check uniconde is accepted as type.
|
|
cnn = self.connect()
|
|
cnn.set_client_encoding('utf8')
|
|
cnn.tpc_begin(u"transaction-id")
|
|
cnn.tpc_prepare()
|
|
cnn.reset()
|
|
|
|
xid = [ xid for xid in cnn.tpc_recover()
|
|
if xid.database == dbname ][0]
|
|
self.assertEqual(None, xid.format_id)
|
|
self.assertEqual('transaction-id', xid.gtrid)
|
|
self.assertEqual(None, xid.bqual)
|
|
|
|
def test_cancel_fails_prepared(self):
|
|
cnn = self.connect()
|
|
cnn.tpc_begin('cancel')
|
|
cnn.tpc_prepare()
|
|
self.assertRaises(psycopg2.ProgrammingError, cnn.cancel)
|
|
|
|
def test_tpc_recover_non_dbapi_connection(self):
|
|
from psycopg2.extras import RealDictConnection
|
|
cnn = self.connect(connection_factory=RealDictConnection)
|
|
cnn.tpc_begin('dict-connection')
|
|
cnn.tpc_prepare()
|
|
cnn.reset()
|
|
|
|
xids = cnn.tpc_recover()
|
|
xid = [ xid for xid in xids if xid.database == dbname ][0]
|
|
self.assertEqual(None, xid.format_id)
|
|
self.assertEqual('dict-connection', xid.gtrid)
|
|
self.assertEqual(None, xid.bqual)
|
|
|
|
|
|
from testutils import skip_if_tpc_disabled
|
|
decorate_all_tests(ConnectionTwoPhaseTests, skip_if_tpc_disabled)
|
|
|
|
|
|
class TransactionControlTests(unittest.TestCase):
|
|
def setUp(self):
|
|
self.conn = psycopg2.connect(dsn)
|
|
|
|
def tearDown(self):
|
|
if not self.conn.closed:
|
|
self.conn.close()
|
|
|
|
def test_closed(self):
|
|
self.conn.close()
|
|
self.assertRaises(psycopg2.InterfaceError,
|
|
self.conn.set_session,
|
|
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
|
|
|
|
def test_not_in_transaction(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("select 1")
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
self.conn.set_session,
|
|
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
|
|
|
|
def test_set_isolation_level(self):
|
|
cur = self.conn.cursor()
|
|
self.conn.set_session(
|
|
psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
self.assertEqual(cur.fetchone()[0], 'serializable')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session(
|
|
psycopg2.extensions.ISOLATION_LEVEL_REPEATABLE_READ)
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
if self.conn.server_version > 80000:
|
|
self.assertEqual(cur.fetchone()[0], 'repeatable read')
|
|
else:
|
|
self.assertEqual(cur.fetchone()[0], 'serializable')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session(
|
|
isolation_level=psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
self.assertEqual(cur.fetchone()[0], 'read committed')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session(
|
|
isolation_level=psycopg2.extensions.ISOLATION_LEVEL_READ_UNCOMMITTED)
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
if self.conn.server_version > 80000:
|
|
self.assertEqual(cur.fetchone()[0], 'read uncommitted')
|
|
else:
|
|
self.assertEqual(cur.fetchone()[0], 'read committed')
|
|
self.conn.rollback()
|
|
|
|
def test_set_isolation_level_str(self):
|
|
cur = self.conn.cursor()
|
|
self.conn.set_session("serializable")
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
self.assertEqual(cur.fetchone()[0], 'serializable')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session("repeatable read")
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
if self.conn.server_version > 80000:
|
|
self.assertEqual(cur.fetchone()[0], 'repeatable read')
|
|
else:
|
|
self.assertEqual(cur.fetchone()[0], 'serializable')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session("read committed")
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
self.assertEqual(cur.fetchone()[0], 'read committed')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session("read uncommitted")
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
if self.conn.server_version > 80000:
|
|
self.assertEqual(cur.fetchone()[0], 'read uncommitted')
|
|
else:
|
|
self.assertEqual(cur.fetchone()[0], 'read committed')
|
|
self.conn.rollback()
|
|
|
|
def test_bad_isolation_level(self):
|
|
self.assertRaises(ValueError, self.conn.set_session, 0)
|
|
self.assertRaises(ValueError, self.conn.set_session, 5)
|
|
self.assertRaises(ValueError, self.conn.set_session, 'whatever')
|
|
|
|
def test_set_read_only(self):
|
|
cur = self.conn.cursor()
|
|
self.conn.set_session(readonly=True)
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
self.conn.rollback()
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
self.conn.rollback()
|
|
|
|
cur = self.conn.cursor()
|
|
self.conn.set_session(readonly=None)
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session(readonly=False)
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], 'off')
|
|
self.conn.rollback()
|
|
|
|
def test_set_default(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
default_isolevel = cur.fetchone()[0]
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
default_readonly = cur.fetchone()[0]
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session(isolation_level='serializable', readonly=True)
|
|
self.conn.set_session(isolation_level='default', readonly='default')
|
|
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
self.assertEqual(cur.fetchone()[0], default_isolevel)
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], default_readonly)
|
|
|
|
@skip_before_postgres(9, 1)
|
|
def test_set_deferrable(self):
|
|
cur = self.conn.cursor()
|
|
self.conn.set_session(readonly=True, deferrable=True)
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
cur.execute("SHOW default_transaction_deferrable;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
self.conn.rollback()
|
|
cur.execute("SHOW default_transaction_deferrable;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session(deferrable=False)
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
cur.execute("SHOW default_transaction_deferrable;")
|
|
self.assertEqual(cur.fetchone()[0], 'off')
|
|
self.conn.rollback()
|
|
|
|
@skip_after_postgres(9, 1)
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def test_set_deferrable_error(self):
|
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self.assertRaises(psycopg2.ProgrammingError,
|
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self.conn.set_session, readonly=True, deferrable=True)
|
|
|
|
|
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class AutocommitTests(unittest.TestCase):
|
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def setUp(self):
|
|
self.conn = psycopg2.connect(dsn)
|
|
|
|
def tearDown(self):
|
|
if not self.conn.closed:
|
|
self.conn.close()
|
|
|
|
def test_closed(self):
|
|
self.conn.close()
|
|
self.assertRaises(psycopg2.InterfaceError,
|
|
setattr, self.conn, 'autocommit', True)
|
|
|
|
# The getter doesn't have a guard. We may change this in future
|
|
# to make it consistent with other methods; meanwhile let's just check
|
|
# it doesn't explode.
|
|
try:
|
|
self.assert_(self.conn.autocommit in (True, False))
|
|
except psycopg2.InterfaceError:
|
|
pass
|
|
|
|
def test_default_no_autocommit(self):
|
|
self.assert_(not self.conn.autocommit)
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
cur = self.conn.cursor()
|
|
cur.execute('select 1;')
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_INTRANS)
|
|
|
|
self.conn.rollback()
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
def test_set_autocommit(self):
|
|
self.conn.autocommit = True
|
|
self.assert_(self.conn.autocommit)
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
cur = self.conn.cursor()
|
|
cur.execute('select 1;')
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
self.conn.autocommit = False
|
|
self.assert_(not self.conn.autocommit)
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
cur.execute('select 1;')
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_INTRANS)
|
|
|
|
def test_set_intrans_error(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute('select 1;')
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
setattr, self.conn, 'autocommit', True)
|
|
|
|
def test_set_session_autocommit(self):
|
|
self.conn.set_session(autocommit=True)
|
|
self.assert_(self.conn.autocommit)
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
cur = self.conn.cursor()
|
|
cur.execute('select 1;')
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
self.conn.set_session(autocommit=False)
|
|
self.assert_(not self.conn.autocommit)
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
|
|
cur.execute('select 1;')
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_BEGIN)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_INTRANS)
|
|
self.conn.rollback()
|
|
|
|
self.conn.set_session('serializable', readonly=True, autocommit=True)
|
|
self.assert_(self.conn.autocommit)
|
|
cur.execute('select 1;')
|
|
self.assertEqual(self.conn.status, psycopg2.extensions.STATUS_READY)
|
|
self.assertEqual(self.conn.get_transaction_status(),
|
|
psycopg2.extensions.TRANSACTION_STATUS_IDLE)
|
|
cur.execute("SHOW default_transaction_isolation;")
|
|
self.assertEqual(cur.fetchone()[0], 'serializable')
|
|
cur.execute("SHOW default_transaction_read_only;")
|
|
self.assertEqual(cur.fetchone()[0], 'on')
|
|
|
|
|
|
def test_suite():
|
|
return unittest.TestLoader().loadTestsFromName(__name__)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|