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https://github.com/psycopg/psycopg2.git
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19ead4a5cb
Tests pass or fail gracefully on older PostgreSQL versions. If unittest2 is available, skip tests instead of printing warnings.
634 lines
22 KiB
Python
634 lines
22 KiB
Python
#!/usr/bin/env python
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from testutils import unittest, decorate_all_tests
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from operator import attrgetter
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import psycopg2
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import psycopg2.extensions
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import tests
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class ConnectionTests(unittest.TestCase):
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def connect(self):
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return psycopg2.connect(tests.dsn)
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def test_closed_attribute(self):
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conn = self.connect()
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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_cursor_closed_attribute(self):
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conn = self.connect()
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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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def test_reset(self):
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conn = self.connect()
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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.connect()
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cur = conn.cursor()
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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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conn.close()
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def test_notices_consistent_order(self):
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conn = self.connect()
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cur = conn.cursor()
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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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conn.close()
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def test_notices_limited(self):
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conn = self.connect()
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cur = conn.cursor()
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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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conn.close()
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def test_server_version(self):
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conn = self.connect()
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self.assert_(conn.server_version)
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def test_protocol_version(self):
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conn = self.connect()
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self.assert_(conn.protocol_version in (2,3), conn.protocol_version)
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def test_tpc_unsupported(self):
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cnn = self.connect()
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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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class IsolationLevelsTestCase(unittest.TestCase):
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def setUp(self):
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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 connect(self):
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return psycopg2.connect(tests.dsn)
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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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conn.set_isolation_level(
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psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
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self.assertEqual(conn.isolation_level,
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psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)
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conn.set_isolation_level(
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psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
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self.assertEqual(conn.isolation_level,
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psycopg2.extensions.ISOLATION_LEVEL_READ_COMMITTED)
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conn.set_isolation_level(
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psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
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self.assertEqual(conn.isolation_level,
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psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE)
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self.assertRaises(ValueError, conn.set_isolation_level, -1)
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self.assertRaises(ValueError, conn.set_isolation_level, 3)
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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 skip_if_tpc_disabled(f):
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"""Skip a test if the server has tpc support disabled."""
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def skip_if_tpc_disabled_(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("SHOW max_prepared_transactions;")
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except psycopg2.ProgrammingError:
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return self.skipTest(
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"server too old: two phase transactions not supported.")
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else:
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mtp = int(cur.fetchone()[0])
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cnn.close()
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if not mtp:
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return self.skipTest(
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"server not configured for two phase transactions. "
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"set max_prepared_transactions to > 0 to run the test")
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return f(self)
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skip_if_tpc_disabled_.__name__ = f.__name__
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return skip_if_tpc_disabled_
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class ConnectionTwoPhaseTests(unittest.TestCase):
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def setUp(self):
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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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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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(tests.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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(tests.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):
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return psycopg2.connect(tests.dsn)
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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")
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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cnn.tpc_begin(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
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cur = cnn.cursor()
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cur.execute("insert into test_tpc values ('test_tpc_commit');")
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_prepare()
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_PREPARED)
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self.assertEqual(1, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_commit()
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(1, self.count_test_records())
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def test_tpc_commit_one_phase(self):
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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cnn.tpc_begin(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
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cur = cnn.cursor()
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cur.execute("insert into test_tpc values ('test_tpc_commit_1p');")
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_commit()
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(1, self.count_test_records())
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def test_tpc_commit_recovered(self):
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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cnn.tpc_begin(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
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cur = cnn.cursor()
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cur.execute("insert into test_tpc values ('test_tpc_commit_rec');")
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_prepare()
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cnn.close()
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self.assertEqual(1, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
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cnn.tpc_commit(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(1, self.count_test_records())
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def test_tpc_rollback(self):
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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cnn.tpc_begin(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
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cur = cnn.cursor()
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cur.execute("insert into test_tpc values ('test_tpc_rollback');")
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_prepare()
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_PREPARED)
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self.assertEqual(1, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_rollback()
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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def test_tpc_rollback_one_phase(self):
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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cnn.tpc_begin(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
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cur = cnn.cursor()
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cur.execute("insert into test_tpc values ('test_tpc_rollback_1p');")
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_rollback()
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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def test_tpc_rollback_recovered(self):
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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cnn.tpc_begin(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_BEGIN)
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cur = cnn.cursor()
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cur.execute("insert into test_tpc values ('test_tpc_commit_rec');")
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn.tpc_prepare()
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cnn.close()
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self.assertEqual(1, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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cnn = self.connect()
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xid = cnn.xid(1, "gtrid", "bqual")
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cnn.tpc_rollback(xid)
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self.assertEqual(cnn.status, psycopg2.extensions.STATUS_READY)
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self.assertEqual(0, self.count_xacts())
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self.assertEqual(0, self.count_test_records())
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def test_status_after_recover(self):
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cnn = self.connect()
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self.assertEqual(psycopg2.extensions.STATUS_READY, cnn.status)
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xns = cnn.tpc_recover()
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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;""",
|
|
(tests.dbname,))
|
|
okvals = cur.fetchall()
|
|
okvals.sort()
|
|
|
|
cnn = self.connect()
|
|
xids = cnn.tpc_recover()
|
|
xids = [ xid for xid in xids if xid.database == tests.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;",
|
|
(tests.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 == tests.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 == tests.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 == tests.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 == tests.dbname ][0]
|
|
self.assertEqual(None, xid.format_id)
|
|
self.assertEqual('transaction-id', xid.gtrid)
|
|
self.assertEqual(None, xid.bqual)
|
|
|
|
decorate_all_tests(ConnectionTwoPhaseTests, skip_if_tpc_disabled)
|
|
|
|
|
|
def test_suite():
|
|
return unittest.TestLoader().loadTestsFromName(__name__)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|