mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-11-30 04:33:45 +03:00
411 lines
13 KiB
Python
Executable File
411 lines
13 KiB
Python
Executable File
#!/usr/bin/env python
|
|
import unittest
|
|
|
|
import psycopg2
|
|
from psycopg2 import extensions
|
|
|
|
import time
|
|
import select
|
|
import StringIO
|
|
|
|
import sys
|
|
if sys.version_info < (3,):
|
|
import tests
|
|
else:
|
|
import py3tests as tests
|
|
|
|
|
|
class PollableStub(object):
|
|
"""A 'pollable' wrapper allowing analysis of the `poll()` calls."""
|
|
def __init__(self, pollable):
|
|
self.pollable = pollable
|
|
self.polls = []
|
|
|
|
def fileno(self):
|
|
return self.pollable.fileno()
|
|
|
|
def poll(self):
|
|
rv = self.pollable.poll()
|
|
self.polls.append(rv)
|
|
return rv
|
|
|
|
|
|
class AsyncTests(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.sync_conn = psycopg2.connect(tests.dsn)
|
|
self.conn = psycopg2.connect(tests.dsn, async=True)
|
|
|
|
self.wait(self.conn)
|
|
|
|
curs = self.conn.cursor()
|
|
curs.execute('''
|
|
CREATE TEMPORARY TABLE table1 (
|
|
id int PRIMARY KEY
|
|
)''')
|
|
self.wait(curs)
|
|
|
|
def tearDown(self):
|
|
self.sync_conn.close()
|
|
self.conn.close()
|
|
|
|
def wait(self, cur_or_conn):
|
|
pollable = cur_or_conn
|
|
if not hasattr(pollable, 'poll'):
|
|
pollable = cur_or_conn.connection
|
|
while True:
|
|
state = pollable.poll()
|
|
if state == psycopg2.extensions.POLL_OK:
|
|
break
|
|
elif state == psycopg2.extensions.POLL_READ:
|
|
select.select([pollable], [], [])
|
|
elif state == psycopg2.extensions.POLL_WRITE:
|
|
select.select([], [pollable], [])
|
|
else:
|
|
raise Exception("Unexpected result from poll: %r", state)
|
|
|
|
def test_connection_setup(self):
|
|
cur = self.conn.cursor()
|
|
sync_cur = self.sync_conn.cursor()
|
|
|
|
self.assert_(self.conn.async)
|
|
self.assert_(not self.sync_conn.async)
|
|
|
|
# the async connection should be in isolevel 0
|
|
self.assertEquals(self.conn.isolation_level, 0)
|
|
|
|
# check other properties to be found on the connection
|
|
self.assert_(self.conn.server_version)
|
|
self.assert_(self.conn.protocol_version in (2,3))
|
|
self.assert_(self.conn.encoding in psycopg2.extensions.encodings)
|
|
|
|
def test_async_named_cursor(self):
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
self.conn.cursor, "name")
|
|
|
|
def test_async_select(self):
|
|
cur = self.conn.cursor()
|
|
self.assertFalse(self.conn.isexecuting())
|
|
cur.execute("select 'a'")
|
|
self.assertTrue(self.conn.isexecuting())
|
|
|
|
self.wait(cur)
|
|
|
|
self.assertFalse(self.conn.isexecuting())
|
|
self.assertEquals(cur.fetchone()[0], "a")
|
|
|
|
def test_async_callproc(self):
|
|
cur = self.conn.cursor()
|
|
try:
|
|
cur.callproc("pg_sleep", (0.1, ))
|
|
except psycopg2.ProgrammingError:
|
|
# PG <8.1 did not have pg_sleep
|
|
return
|
|
self.assertTrue(self.conn.isexecuting())
|
|
|
|
self.wait(cur)
|
|
self.assertFalse(self.conn.isexecuting())
|
|
self.assertEquals(cur.fetchall()[0][0], '')
|
|
|
|
def test_async_after_async(self):
|
|
cur = self.conn.cursor()
|
|
cur2 = self.conn.cursor()
|
|
|
|
cur.execute("insert into table1 values (1)")
|
|
|
|
# an async execute after an async one raises an exception
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
cur.execute, "select * from table1")
|
|
# same for callproc
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
cur.callproc, "version")
|
|
# but after you've waited it should be good
|
|
self.wait(cur)
|
|
cur.execute("select * from table1")
|
|
self.wait(cur)
|
|
|
|
self.assertEquals(cur.fetchall()[0][0], 1)
|
|
|
|
cur.execute("delete from table1")
|
|
self.wait(cur)
|
|
|
|
cur.execute("select * from table1")
|
|
self.wait(cur)
|
|
|
|
self.assertEquals(cur.fetchone(), None)
|
|
|
|
def test_fetch_after_async(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("select 'a'")
|
|
|
|
# a fetch after an asynchronous query should raise an error
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
cur.fetchall)
|
|
# but after waiting it should work
|
|
self.wait(cur)
|
|
self.assertEquals(cur.fetchall()[0][0], "a")
|
|
|
|
def test_rollback_while_async(self):
|
|
cur = self.conn.cursor()
|
|
|
|
cur.execute("select 'a'")
|
|
|
|
# a rollback should not work in asynchronous mode
|
|
self.assertRaises(psycopg2.ProgrammingError, self.conn.rollback)
|
|
|
|
def test_commit_while_async(self):
|
|
cur = self.conn.cursor()
|
|
|
|
cur.execute("begin")
|
|
self.wait(cur)
|
|
|
|
cur.execute("insert into table1 values (1)")
|
|
|
|
# a commit should not work in asynchronous mode
|
|
self.assertRaises(psycopg2.ProgrammingError, self.conn.commit)
|
|
self.assertTrue(self.conn.isexecuting())
|
|
|
|
# but a manual commit should
|
|
self.wait(cur)
|
|
cur.execute("commit")
|
|
self.wait(cur)
|
|
|
|
cur.execute("select * from table1")
|
|
self.wait(cur)
|
|
self.assertEquals(cur.fetchall()[0][0], 1)
|
|
|
|
cur.execute("delete from table1")
|
|
self.wait(cur)
|
|
|
|
cur.execute("select * from table1")
|
|
self.wait(cur)
|
|
self.assertEquals(cur.fetchone(), None)
|
|
|
|
def test_set_parameters_while_async(self):
|
|
cur = self.conn.cursor()
|
|
|
|
cur.execute("select 'c'")
|
|
self.assertTrue(self.conn.isexecuting())
|
|
|
|
# getting transaction status works
|
|
self.assertEquals(self.conn.get_transaction_status(),
|
|
extensions.TRANSACTION_STATUS_ACTIVE)
|
|
self.assertTrue(self.conn.isexecuting())
|
|
|
|
# setting connection encoding should fail
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
self.conn.set_client_encoding, "LATIN1")
|
|
|
|
# same for transaction isolation
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
self.conn.set_isolation_level, 1)
|
|
|
|
def test_reset_while_async(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("select 'c'")
|
|
self.assertTrue(self.conn.isexecuting())
|
|
|
|
# a reset should fail
|
|
self.assertRaises(psycopg2.ProgrammingError, self.conn.reset)
|
|
|
|
def test_async_iter(self):
|
|
cur = self.conn.cursor()
|
|
|
|
cur.execute("begin")
|
|
self.wait(cur)
|
|
cur.execute("insert into table1 values (1), (2), (3)")
|
|
self.wait(cur)
|
|
cur.execute("select id from table1 order by id")
|
|
|
|
# iteration fails if a query is underway
|
|
self.assertRaises(psycopg2.ProgrammingError, list, cur)
|
|
|
|
# but after it's done it should work
|
|
self.wait(cur)
|
|
self.assertEquals(list(cur), [(1, ), (2, ), (3, )])
|
|
self.assertFalse(self.conn.isexecuting())
|
|
|
|
def test_copy_while_async(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("select 'a'")
|
|
|
|
# copy should fail
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
cur.copy_from,
|
|
StringIO.StringIO("1\n3\n5\n\\.\n"), "table1")
|
|
|
|
def test_lobject_while_async(self):
|
|
# large objects should be prohibited
|
|
self.assertRaises(psycopg2.ProgrammingError,
|
|
self.conn.lobject)
|
|
|
|
def test_async_executemany(self):
|
|
cur = self.conn.cursor()
|
|
self.assertRaises(
|
|
psycopg2.ProgrammingError,
|
|
cur.executemany, "insert into table1 values (%s)", [1, 2, 3])
|
|
|
|
def test_async_scroll(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("insert into table1 values (1), (2), (3)")
|
|
self.wait(cur)
|
|
cur.execute("select id from table1 order by id")
|
|
|
|
# scroll should fail if a query is underway
|
|
self.assertRaises(psycopg2.ProgrammingError, cur.scroll, 1)
|
|
self.assertTrue(self.conn.isexecuting())
|
|
|
|
# but after it's done it should work
|
|
self.wait(cur)
|
|
cur.scroll(1)
|
|
self.assertEquals(cur.fetchall(), [(2, ), (3, )])
|
|
|
|
cur = self.conn.cursor()
|
|
cur.execute("select id from table1 order by id")
|
|
self.wait(cur)
|
|
|
|
cur2 = self.conn.cursor()
|
|
self.assertRaises(psycopg2.ProgrammingError, cur2.scroll, 1)
|
|
|
|
self.assertRaises(psycopg2.ProgrammingError, cur.scroll, 4)
|
|
|
|
cur = self.conn.cursor()
|
|
cur.execute("select id from table1 order by id")
|
|
self.wait(cur)
|
|
cur.scroll(2)
|
|
cur.scroll(-1)
|
|
self.assertEquals(cur.fetchall(), [(2, ), (3, )])
|
|
|
|
def test_scroll(self):
|
|
cur = self.sync_conn.cursor()
|
|
cur.execute("create table table1 (id int)")
|
|
cur.execute("insert into table1 values (1), (2), (3)")
|
|
cur.execute("select id from table1 order by id")
|
|
cur.scroll(2)
|
|
cur.scroll(-1)
|
|
self.assertEquals(cur.fetchall(), [(2, ), (3, )])
|
|
|
|
def test_async_dont_read_all(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("select repeat('a', 10000); select repeat('b', 10000)")
|
|
|
|
# fetch the result
|
|
self.wait(cur)
|
|
|
|
# it should be the result of the second query
|
|
self.assertEquals(cur.fetchone()[0], "b" * 10000)
|
|
|
|
def test_async_subclass(self):
|
|
class MyConn(psycopg2.extensions.connection):
|
|
def __init__(self, dsn, async=0):
|
|
psycopg2.extensions.connection.__init__(self, dsn, async=async)
|
|
|
|
conn = psycopg2.connect(tests.dsn, connection_factory=MyConn, async=True)
|
|
self.assert_(isinstance(conn, MyConn))
|
|
self.assert_(conn.async)
|
|
conn.close()
|
|
|
|
def test_flush_on_write(self):
|
|
# a very large query requires a flush loop to be sent to the backend
|
|
curs = self.conn.cursor()
|
|
for mb in 1, 5, 10, 20, 50:
|
|
size = mb * 1024 * 1024
|
|
stub = PollableStub(self.conn)
|
|
curs.execute("select %s;", ('x' * size,))
|
|
self.wait(stub)
|
|
self.assertEqual(size, len(curs.fetchone()[0]))
|
|
if stub.polls.count(psycopg2.extensions.POLL_WRITE) > 1:
|
|
return
|
|
|
|
self.fail("sending a large query didn't trigger block on write.")
|
|
|
|
def test_sync_poll(self):
|
|
cur = self.sync_conn.cursor()
|
|
cur.execute("select 1")
|
|
# polling with a sync query works
|
|
cur.connection.poll()
|
|
self.assertEquals(cur.fetchone()[0], 1)
|
|
|
|
def test_notify(self):
|
|
cur = self.conn.cursor()
|
|
sync_cur = self.sync_conn.cursor()
|
|
|
|
sync_cur.execute("listen test_notify")
|
|
self.sync_conn.commit()
|
|
cur.execute("notify test_notify")
|
|
self.wait(cur)
|
|
|
|
self.assertEquals(self.sync_conn.notifies, [])
|
|
|
|
pid = self.conn.get_backend_pid()
|
|
for _ in range(5):
|
|
self.wait(self.sync_conn)
|
|
if not self.sync_conn.notifies:
|
|
time.sleep(0.5)
|
|
continue
|
|
self.assertEquals(len(self.sync_conn.notifies), 1)
|
|
self.assertEquals(self.sync_conn.notifies.pop(),
|
|
(pid, "test_notify"))
|
|
return
|
|
self.fail("No NOTIFY in 2.5 seconds")
|
|
|
|
def test_async_fetch_wrong_cursor(self):
|
|
cur1 = self.conn.cursor()
|
|
cur2 = self.conn.cursor()
|
|
cur1.execute("select 1")
|
|
|
|
self.wait(cur1)
|
|
self.assertFalse(self.conn.isexecuting())
|
|
# fetching from a cursor with no results is an error
|
|
self.assertRaises(psycopg2.ProgrammingError, cur2.fetchone)
|
|
# fetching from the correct cursor works
|
|
self.assertEquals(cur1.fetchone()[0], 1)
|
|
|
|
def test_error(self):
|
|
cur = self.conn.cursor()
|
|
cur.execute("insert into table1 values (%s)", (1, ))
|
|
self.wait(cur)
|
|
cur.execute("insert into table1 values (%s)", (1, ))
|
|
# this should fail
|
|
self.assertRaises(psycopg2.IntegrityError, self.wait, cur)
|
|
cur.execute("insert into table1 values (%s); "
|
|
"insert into table1 values (%s)", (2, 2))
|
|
# this should fail as well
|
|
self.assertRaises(psycopg2.IntegrityError, self.wait, cur)
|
|
# but this should work
|
|
cur.execute("insert into table1 values (%s)", (2, ))
|
|
self.wait(cur)
|
|
# and the cursor should be usable afterwards
|
|
cur.execute("insert into table1 values (%s)", (3, ))
|
|
self.wait(cur)
|
|
cur.execute("select * from table1 order by id")
|
|
self.wait(cur)
|
|
self.assertEquals(cur.fetchall(), [(1, ), (2, ), (3, )])
|
|
cur.execute("delete from table1")
|
|
self.wait(cur)
|
|
|
|
def test_error_two_cursors(self):
|
|
cur = self.conn.cursor()
|
|
cur2 = self.conn.cursor()
|
|
cur.execute("select * from no_such_table")
|
|
self.assertRaises(psycopg2.ProgrammingError, self.wait, cur)
|
|
cur2.execute("select 1")
|
|
self.wait(cur2)
|
|
self.assertEquals(cur2.fetchone()[0], 1)
|
|
|
|
def test_notices(self):
|
|
del self.conn.notices[:]
|
|
cur = self.conn.cursor()
|
|
cur.execute("create temp table chatty (id serial primary key);")
|
|
self.wait(cur)
|
|
self.assertEqual("CREATE TABLE", cur.statusmessage)
|
|
self.assert_(self.conn.notices)
|
|
|
|
|
|
def test_suite():
|
|
return unittest.TestLoader().loadTestsFromName(__name__)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|
|
|