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# Copyright (C) 2016-present the asyncpg authors and contributors
# <see AUTHORS file>
#
# This module is part of asyncpg and is released under
# the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
import asyncio
import asyncpg
from asyncpg import _testbase as tb
from asyncpg import exceptions
class TestExecuteScript(tb.ConnectedTestCase):
async def test_execute_script_1(self):
self.assertEqual(self.con._protocol.queries_count, 0)
status = await self.con.execute('''
SELECT 1;
SELECT true FROM pg_type WHERE false = true;
SELECT generate_series(0, 9);
''')
self.assertEqual(self.con._protocol.queries_count, 1)
self.assertEqual(status, 'SELECT 10')
async def test_execute_script_2(self):
status = await self.con.execute('''
CREATE TABLE mytab (a int);
''')
self.assertEqual(status, 'CREATE TABLE')
try:
status = await self.con.execute('''
INSERT INTO mytab (a) VALUES ($1), ($2)
''', 10, 20)
self.assertEqual(status, 'INSERT 0 2')
finally:
await self.con.execute('DROP TABLE mytab')
async def test_execute_script_3(self):
with self.assertRaisesRegex(asyncpg.PostgresSyntaxError,
'cannot insert multiple commands'):
await self.con.execute('''
CREATE TABLE mytab (a int);
INSERT INTO mytab (a) VALUES ($1), ($2);
''', 10, 20)
async def test_execute_script_check_transactionality(self):
with self.assertRaises(asyncpg.PostgresError):
await self.con.execute('''
CREATE TABLE mytab (a int);
SELECT * FROM mytab WHERE 1 / 0 = 1;
''')
with self.assertRaisesRegex(asyncpg.PostgresError,
'"mytab" does not exist'):
await self.con.prepare('''
SELECT * FROM mytab
''')
async def test_execute_exceptions_1(self):
with self.assertRaisesRegex(asyncpg.PostgresError,
'relation "__dne__" does not exist'):
await self.con.execute('select * from __dne__')
async def test_execute_script_interrupted_close(self):
fut = self.loop.create_task(
self.con.execute('''SELECT pg_sleep(10)'''))
await asyncio.sleep(0.2)
self.assertFalse(self.con.is_closed())
await self.con.close()
self.assertTrue(self.con.is_closed())
with self.assertRaises(asyncpg.QueryCanceledError):
await fut
async def test_execute_script_interrupted_terminate(self):
fut = self.loop.create_task(
self.con.execute('''SELECT pg_sleep(10)'''))
await asyncio.sleep(0.2)
self.assertFalse(self.con.is_closed())
self.con.terminate()
self.assertTrue(self.con.is_closed())
with self.assertRaisesRegex(asyncpg.ConnectionDoesNotExistError,
'closed in the middle'):
await fut
self.con.terminate()
class TestExecuteMany(tb.ConnectedTestCase):
def setUp(self):
super().setUp()
self.loop.run_until_complete(self.con.execute(
'CREATE TABLE exmany (a text, b int PRIMARY KEY)'))
def tearDown(self):
self.loop.run_until_complete(self.con.execute('DROP TABLE exmany'))
super().tearDown()
async def test_executemany_basic(self):
result = await self.con.executemany('''
INSERT INTO exmany VALUES($1, $2)
''', [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
self.assertIsNone(result)
result = await self.con.fetch('''
SELECT * FROM exmany
''')
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
# Empty set
await self.con.executemany('''
INSERT INTO exmany VALUES($1, $2)
''', ())
result = await self.con.fetch('''
SELECT * FROM exmany
''')
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
async def test_executemany_returning(self):
result = await self.con.fetchmany('''
INSERT INTO exmany VALUES($1, $2) RETURNING a, b
''', [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
result = await self.con.fetch('''
SELECT * FROM exmany
''')
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
# Empty set
await self.con.fetchmany('''
INSERT INTO exmany VALUES($1, $2) RETURNING a, b
''', ())
result = await self.con.fetch('''
SELECT * FROM exmany
''')
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
# Without "RETURNING"
result = await self.con.fetchmany('''
INSERT INTO exmany VALUES($1, $2)
''', [('e', 5), ('f', 6)])
self.assertEqual(result, [])
result = await self.con.fetch('''
SELECT * FROM exmany
''')
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5), ('f', 6)
])
async def test_executemany_bad_input(self):
with self.assertRaisesRegex(
exceptions.DataError,
r"invalid input in executemany\(\) argument sequence element #1: "
r"expected a sequence",
):
await self.con.executemany('''
INSERT INTO exmany (b) VALUES($1)
''', [(0,), {1: 0}])
with self.assertRaisesRegex(
exceptions.DataError,
r"invalid input for query argument \$1 in element #1 of "
r"executemany\(\) sequence: 'bad'",
):
await self.con.executemany('''
INSERT INTO exmany (b) VALUES($1)
''', [(0,), ("bad",)])
async def test_executemany_error_in_input_gen(self):
bad_data = ([1 / 0] for v in range(10))
with self.assertRaises(ZeroDivisionError):
async with self.con.transaction():
await self.con.executemany('''
INSERT INTO exmany (b)VALUES($1)
''', bad_data)
good_data = ([v] for v in range(10))
async with self.con.transaction():
await self.con.executemany('''
INSERT INTO exmany (b)VALUES($1)
''', good_data)
async def test_executemany_server_failure(self):
with self.assertRaises(exceptions.UniqueViolationError):
await self.con.executemany('''
INSERT INTO exmany VALUES($1, $2)
''', [
('a', 1), ('b', 2), ('c', 2), ('d', 4)
])
result = await self.con.fetch('SELECT * FROM exmany')
self.assertEqual(result, [])
async def test_executemany_server_failure_after_writes(self):
with self.assertRaises(exceptions.UniqueViolationError):
await self.con.executemany('''
INSERT INTO exmany VALUES($1, $2)
''', [('a' * 32768, x) for x in range(10)] + [
('b', 12), ('c', 12), ('d', 14)
])
result = await self.con.fetch('SELECT b FROM exmany')
self.assertEqual(result, [])
async def test_executemany_server_failure_during_writes(self):
# failure at the beginning, server error detected in the middle
pos = 0
def gen():
nonlocal pos
while pos < 128:
pos += 1
if pos < 3:
yield ('a', 0)
else:
yield 'a' * 32768, pos
with self.assertRaises(exceptions.UniqueViolationError):
await self.con.executemany('''
INSERT INTO exmany VALUES($1, $2)
''', gen())
result = await self.con.fetch('SELECT b FROM exmany')
self.assertEqual(result, [])
self.assertLess(pos, 128, 'should stop early')
async def test_executemany_client_failure_after_writes(self):
with self.assertRaises(ZeroDivisionError):
await self.con.executemany('''
INSERT INTO exmany VALUES($1, $2)
''', (('a' * 32768, y + y / y) for y in range(10, -1, -1)))
result = await self.con.fetch('SELECT b FROM exmany')
self.assertEqual(result, [])
async def test_executemany_timeout(self):
with self.assertRaises(asyncio.TimeoutError):
await self.con.executemany('''
INSERT INTO exmany VALUES(pg_sleep(0.1) || $1, $2)
''', [('a' * 32768, x) for x in range(128)], timeout=0.5)
result = await self.con.fetch('SELECT * FROM exmany')
self.assertEqual(result, [])
async def test_executemany_timeout_flow_control(self):
event = asyncio.Event()
async def locker():
test_func = getattr(self, self._testMethodName).__func__
opts = getattr(test_func, '__connect_options__', {})
conn = await self.connect(**opts)
try:
tx = conn.transaction()
await tx.start()
await conn.execute("UPDATE exmany SET a = '1' WHERE b = 10")
event.set()
await asyncio.sleep(1)
await tx.rollback()
finally:
event.set()
await conn.close()
await self.con.executemany('''
INSERT INTO exmany VALUES(NULL, $1)
''', [(x,) for x in range(128)])
fut = asyncio.ensure_future(locker())
await event.wait()
with self.assertRaises(asyncio.TimeoutError):
await self.con.executemany('''
UPDATE exmany SET a = $1 WHERE b = $2
''', [('a' * 32768, x) for x in range(128)], timeout=0.5)
await fut
result = await self.con.fetch(
'SELECT * FROM exmany WHERE a IS NOT NULL')
self.assertEqual(result, [])
async def test_executemany_client_failure_in_transaction(self):
tx = self.con.transaction()
await tx.start()
with self.assertRaises(ZeroDivisionError):
await self.con.executemany('''
INSERT INTO exmany VALUES($1, $2)
''', (('a' * 32768, y + y / y) for y in range(10, -1, -1)))
result = await self.con.fetch('SELECT b FROM exmany')
# only 2 batches executed (2 x 4)
self.assertEqual(
[x[0] for x in result], [y + 1 for y in range(10, 2, -1)])
await tx.rollback()
result = await self.con.fetch('SELECT b FROM exmany')
self.assertEqual(result, [])
async def test_executemany_client_server_failure_conflict(self):
self.con._transport.set_write_buffer_limits(65536 * 64, 16384 * 64)
with self.assertRaises(exceptions.UniqueViolationError):
await self.con.executemany('''
INSERT INTO exmany VALUES($1, 0)
''', (('a' * 32768,) for y in range(4, -1, -1) if y / y))
result = await self.con.fetch('SELECT b FROM exmany')
self.assertEqual(result, [])
async def test_executemany_prepare(self):
stmt = await self.con.prepare('''
INSERT INTO exmany VALUES($1, $2)
''')
result = await stmt.executemany([
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
self.assertIsNone(result)
result = await self.con.fetch('''
SELECT * FROM exmany
''')
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
# Empty set
await stmt.executemany(())
result = await self.con.fetch('''
SELECT * FROM exmany
''')
self.assertEqual(result, [
('a', 1), ('b', 2), ('c', 3), ('d', 4)
])
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