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cpython/Lib/test/test_asyncio/test_base_events.py

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"""Tests for base_events.py"""
import concurrent.futures
import errno
import math
import platform
import socket
import sys
import threading
import time
import unittest
from unittest import mock
import asyncio
from asyncio import base_events
from asyncio import constants
from test.test_asyncio import utils as test_utils
from test import support
from test.support.script_helper import assert_python_ok
from test.support import os_helper
from test.support import socket_helper
import warnings
MOCK_ANY = mock.ANY
def tearDownModule():
asyncio.set_event_loop_policy(None)
def mock_socket_module():
m_socket = mock.MagicMock(spec=socket)
for name in (
'AF_INET', 'AF_INET6', 'AF_UNSPEC', 'IPPROTO_TCP', 'IPPROTO_UDP',
'SOCK_STREAM', 'SOCK_DGRAM', 'SOL_SOCKET', 'SO_REUSEADDR', 'inet_pton'
):
if hasattr(socket, name):
setattr(m_socket, name, getattr(socket, name))
else:
delattr(m_socket, name)
m_socket.socket = mock.MagicMock()
m_socket.socket.return_value = test_utils.mock_nonblocking_socket()
return m_socket
def patch_socket(f):
return mock.patch('asyncio.base_events.socket',
new_callable=mock_socket_module)(f)
class BaseEventTests(test_utils.TestCase):
def test_ipaddr_info(self):
UNSPEC = socket.AF_UNSPEC
INET = socket.AF_INET
INET6 = socket.AF_INET6
STREAM = socket.SOCK_STREAM
DGRAM = socket.SOCK_DGRAM
TCP = socket.IPPROTO_TCP
UDP = socket.IPPROTO_UDP
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info('1.2.3.4', 1, INET, STREAM, TCP))
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info(b'1.2.3.4', 1, INET, STREAM, TCP))
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info('1.2.3.4', 1, UNSPEC, STREAM, TCP))
self.assertEqual(
(INET, DGRAM, UDP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info('1.2.3.4', 1, UNSPEC, DGRAM, UDP))
# Socket type STREAM implies TCP protocol.
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info('1.2.3.4', 1, UNSPEC, STREAM, 0))
# Socket type DGRAM implies UDP protocol.
self.assertEqual(
(INET, DGRAM, UDP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info('1.2.3.4', 1, UNSPEC, DGRAM, 0))
# No socket type.
self.assertIsNone(
base_events._ipaddr_info('1.2.3.4', 1, UNSPEC, 0, 0))
if socket_helper.IPV6_ENABLED:
# IPv4 address with family IPv6.
self.assertIsNone(
base_events._ipaddr_info('1.2.3.4', 1, INET6, STREAM, TCP))
self.assertEqual(
(INET6, STREAM, TCP, '', ('::3', 1, 0, 0)),
base_events._ipaddr_info('::3', 1, INET6, STREAM, TCP))
self.assertEqual(
(INET6, STREAM, TCP, '', ('::3', 1, 0, 0)),
base_events._ipaddr_info('::3', 1, UNSPEC, STREAM, TCP))
# IPv6 address with family IPv4.
self.assertIsNone(
base_events._ipaddr_info('::3', 1, INET, STREAM, TCP))
# IPv6 address with zone index.
self.assertIsNone(
base_events._ipaddr_info('::3%lo0', 1, INET6, STREAM, TCP))
def test_port_parameter_types(self):
# Test obscure kinds of arguments for "port".
INET = socket.AF_INET
STREAM = socket.SOCK_STREAM
TCP = socket.IPPROTO_TCP
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 0)),
base_events._ipaddr_info('1.2.3.4', None, INET, STREAM, TCP))
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 0)),
base_events._ipaddr_info('1.2.3.4', b'', INET, STREAM, TCP))
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 0)),
base_events._ipaddr_info('1.2.3.4', '', INET, STREAM, TCP))
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info('1.2.3.4', '1', INET, STREAM, TCP))
self.assertEqual(
(INET, STREAM, TCP, '', ('1.2.3.4', 1)),
base_events._ipaddr_info('1.2.3.4', b'1', INET, STREAM, TCP))
@patch_socket
def test_ipaddr_info_no_inet_pton(self, m_socket):
del m_socket.inet_pton
self.assertIsNone(base_events._ipaddr_info('1.2.3.4', 1,
socket.AF_INET,
socket.SOCK_STREAM,
socket.IPPROTO_TCP))
class BaseEventLoopTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = base_events.BaseEventLoop()
self.loop._selector = mock.Mock()
self.loop._selector.select.return_value = ()
self.set_event_loop(self.loop)
def test_not_implemented(self):
m = mock.Mock()
self.assertRaises(
NotImplementedError,
self.loop._make_socket_transport, m, m)
self.assertRaises(
NotImplementedError,
self.loop._make_ssl_transport, m, m, m, m)
self.assertRaises(
NotImplementedError,
self.loop._make_datagram_transport, m, m)
self.assertRaises(
NotImplementedError, self.loop._process_events, [])
self.assertRaises(
NotImplementedError, self.loop._write_to_self)
self.assertRaises(
NotImplementedError,
self.loop._make_read_pipe_transport, m, m)
self.assertRaises(
NotImplementedError,
self.loop._make_write_pipe_transport, m, m)
gen = self.loop._make_subprocess_transport(m, m, m, m, m, m, m)
with self.assertRaises(NotImplementedError):
gen.send(None)
def test_close(self):
self.assertFalse(self.loop.is_closed())
self.loop.close()
self.assertTrue(self.loop.is_closed())
# it should be possible to call close() more than once
self.loop.close()
self.loop.close()
# operation blocked when the loop is closed
f = self.loop.create_future()
self.assertRaises(RuntimeError, self.loop.run_forever)
self.assertRaises(RuntimeError, self.loop.run_until_complete, f)
def test__add_callback_handle(self):
h = asyncio.Handle(lambda: False, (), self.loop, None)
self.loop._add_callback(h)
self.assertFalse(self.loop._scheduled)
self.assertIn(h, self.loop._ready)
def test__add_callback_cancelled_handle(self):
h = asyncio.Handle(lambda: False, (), self.loop, None)
h.cancel()
self.loop._add_callback(h)
self.assertFalse(self.loop._scheduled)
self.assertFalse(self.loop._ready)
def test_set_default_executor(self):
class DummyExecutor(concurrent.futures.ThreadPoolExecutor):
def submit(self, fn, *args, **kwargs):
raise NotImplementedError(
'cannot submit into a dummy executor')
self.loop._process_events = mock.Mock()
self.loop._write_to_self = mock.Mock()
executor = DummyExecutor()
self.loop.set_default_executor(executor)
self.assertIs(executor, self.loop._default_executor)
def test_set_default_executor_error(self):
executor = mock.Mock()
msg = 'executor must be ThreadPoolExecutor instance'
with self.assertRaisesRegex(TypeError, msg):
self.loop.set_default_executor(executor)
self.assertIsNone(self.loop._default_executor)
def test_shutdown_default_executor_timeout(self):
class DummyExecutor(concurrent.futures.ThreadPoolExecutor):
def shutdown(self, wait=True, *, cancel_futures=False):
if wait:
time.sleep(0.1)
self.loop._process_events = mock.Mock()
self.loop._write_to_self = mock.Mock()
executor = DummyExecutor()
self.loop.set_default_executor(executor)
with self.assertWarnsRegex(RuntimeWarning,
"The executor did not finishing joining"):
self.loop.run_until_complete(
self.loop.shutdown_default_executor(timeout=0.01))
def test_call_soon(self):
def cb():
pass
h = self.loop.call_soon(cb)
self.assertEqual(h._callback, cb)
self.assertIsInstance(h, asyncio.Handle)
self.assertIn(h, self.loop._ready)
def test_call_soon_non_callable(self):
self.loop.set_debug(True)
with self.assertRaisesRegex(TypeError, 'a callable object'):
self.loop.call_soon(1)
def test_call_later(self):
def cb():
pass
h = self.loop.call_later(10.0, cb)
self.assertIsInstance(h, asyncio.TimerHandle)
self.assertIn(h, self.loop._scheduled)
self.assertNotIn(h, self.loop._ready)
with self.assertRaises(TypeError, msg="delay must not be None"):
self.loop.call_later(None, cb)
def test_call_later_negative_delays(self):
calls = []
def cb(arg):
calls.append(arg)
self.loop._process_events = mock.Mock()
self.loop.call_later(-1, cb, 'a')
self.loop.call_later(-2, cb, 'b')
test_utils.run_briefly(self.loop)
self.assertEqual(calls, ['b', 'a'])
def test_time_and_call_at(self):
def cb():
self.loop.stop()
self.loop._process_events = mock.Mock()
delay = 0.100
when = self.loop.time() + delay
self.loop.call_at(when, cb)
t0 = self.loop.time()
self.loop.run_forever()
dt = self.loop.time() - t0
# 50 ms: maximum granularity of the event loop
self.assertGreaterEqual(dt, delay - test_utils.CLOCK_RES)
with self.assertRaises(TypeError, msg="when cannot be None"):
self.loop.call_at(None, cb)
def check_thread(self, loop, debug):
def cb():
pass
loop.set_debug(debug)
if debug:
msg = ("Non-thread-safe operation invoked on an event loop other "
"than the current one")
with self.assertRaisesRegex(RuntimeError, msg):
loop.call_soon(cb)
with self.assertRaisesRegex(RuntimeError, msg):
loop.call_later(60, cb)
with self.assertRaisesRegex(RuntimeError, msg):
loop.call_at(loop.time() + 60, cb)
else:
loop.call_soon(cb)
loop.call_later(60, cb)
loop.call_at(loop.time() + 60, cb)
def test_check_thread(self):
def check_in_thread(loop, event, debug, create_loop, fut):
# wait until the event loop is running
event.wait()
try:
if create_loop:
loop2 = base_events.BaseEventLoop()
try:
asyncio.set_event_loop(loop2)
self.check_thread(loop, debug)
finally:
asyncio.set_event_loop(None)
loop2.close()
else:
self.check_thread(loop, debug)
except Exception as exc:
loop.call_soon_threadsafe(fut.set_exception, exc)
else:
loop.call_soon_threadsafe(fut.set_result, None)
def test_thread(loop, debug, create_loop=False):
event = threading.Event()
fut = loop.create_future()
loop.call_soon(event.set)
args = (loop, event, debug, create_loop, fut)
thread = threading.Thread(target=check_in_thread, args=args)
thread.start()
loop.run_until_complete(fut)
thread.join()
self.loop._process_events = mock.Mock()
self.loop._write_to_self = mock.Mock()
# raise RuntimeError if the thread has no event loop
test_thread(self.loop, True)
# check disabled if debug mode is disabled
test_thread(self.loop, False)
# raise RuntimeError if the event loop of the thread is not the called
# event loop
test_thread(self.loop, True, create_loop=True)
# check disabled if debug mode is disabled
test_thread(self.loop, False, create_loop=True)
def test__run_once(self):
h1 = asyncio.TimerHandle(time.monotonic() + 5.0, lambda: True, (),
self.loop, None)
h2 = asyncio.TimerHandle(time.monotonic() + 10.0, lambda: True, (),
self.loop, None)
h1.cancel()
self.loop._process_events = mock.Mock()
self.loop._scheduled.append(h1)
self.loop._scheduled.append(h2)
self.loop._run_once()
t = self.loop._selector.select.call_args[0][0]
self.assertTrue(9.5 < t < 10.5, t)
self.assertEqual([h2], self.loop._scheduled)
self.assertTrue(self.loop._process_events.called)
def test_set_debug(self):
self.loop.set_debug(True)
self.assertTrue(self.loop.get_debug())
self.loop.set_debug(False)
self.assertFalse(self.loop.get_debug())
def test__run_once_schedule_handle(self):
handle = None
processed = False
def cb(loop):
nonlocal processed, handle
processed = True
handle = loop.call_soon(lambda: True)
h = asyncio.TimerHandle(time.monotonic() - 1, cb, (self.loop,),
self.loop, None)
self.loop._process_events = mock.Mock()
self.loop._scheduled.append(h)
self.loop._run_once()
self.assertTrue(processed)
self.assertEqual([handle], list(self.loop._ready))
def test__run_once_cancelled_event_cleanup(self):
self.loop._process_events = mock.Mock()
self.assertTrue(
0 < base_events._MIN_CANCELLED_TIMER_HANDLES_FRACTION < 1.0)
def cb():
pass
# Set up one "blocking" event that will not be cancelled to
# ensure later cancelled events do not make it to the head
# of the queue and get cleaned.
not_cancelled_count = 1
self.loop.call_later(3000, cb)
# Add less than threshold (base_events._MIN_SCHEDULED_TIMER_HANDLES)
# cancelled handles, ensure they aren't removed
cancelled_count = 2
for x in range(2):
h = self.loop.call_later(3600, cb)
h.cancel()
# Add some cancelled events that will be at head and removed
cancelled_count += 2
for x in range(2):
h = self.loop.call_later(100, cb)
h.cancel()
# This test is invalid if _MIN_SCHEDULED_TIMER_HANDLES is too low
self.assertLessEqual(cancelled_count + not_cancelled_count,
base_events._MIN_SCHEDULED_TIMER_HANDLES)
self.assertEqual(self.loop._timer_cancelled_count, cancelled_count)
self.loop._run_once()
cancelled_count -= 2
self.assertEqual(self.loop._timer_cancelled_count, cancelled_count)
self.assertEqual(len(self.loop._scheduled),
cancelled_count + not_cancelled_count)
# Need enough events to pass _MIN_CANCELLED_TIMER_HANDLES_FRACTION
# so that deletion of cancelled events will occur on next _run_once
add_cancel_count = int(math.ceil(
base_events._MIN_SCHEDULED_TIMER_HANDLES *
base_events._MIN_CANCELLED_TIMER_HANDLES_FRACTION)) + 1
add_not_cancel_count = max(base_events._MIN_SCHEDULED_TIMER_HANDLES -
add_cancel_count, 0)
# Add some events that will not be cancelled
not_cancelled_count += add_not_cancel_count
for x in range(add_not_cancel_count):
self.loop.call_later(3600, cb)
# Add enough cancelled events
cancelled_count += add_cancel_count
for x in range(add_cancel_count):
h = self.loop.call_later(3600, cb)
h.cancel()
# Ensure all handles are still scheduled
self.assertEqual(len(self.loop._scheduled),
cancelled_count + not_cancelled_count)
self.loop._run_once()
# Ensure cancelled events were removed
self.assertEqual(len(self.loop._scheduled), not_cancelled_count)
# Ensure only uncancelled events remain scheduled
self.assertTrue(all([not x._cancelled for x in self.loop._scheduled]))
def test_run_until_complete_type_error(self):
self.assertRaises(TypeError,
self.loop.run_until_complete, 'blah')
def test_run_until_complete_loop(self):
task = self.loop.create_future()
other_loop = self.new_test_loop()
self.addCleanup(other_loop.close)
self.assertRaises(ValueError,
other_loop.run_until_complete, task)
def test_run_until_complete_loop_orphan_future_close_loop(self):
class ShowStopper(SystemExit):
pass
async def foo(delay):
await asyncio.sleep(delay)
def throw():
raise ShowStopper
self.loop._process_events = mock.Mock()
self.loop.call_soon(throw)
with self.assertRaises(ShowStopper):
self.loop.run_until_complete(foo(0.1))
# This call fails if run_until_complete does not clean up
# done-callback for the previous future.
self.loop.run_until_complete(foo(0.2))
def test_subprocess_exec_invalid_args(self):
args = [sys.executable, '-c', 'pass']
# missing program parameter (empty args)
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_exec,
asyncio.SubprocessProtocol)
# expected multiple arguments, not a list
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_exec,
asyncio.SubprocessProtocol, args)
# program arguments must be strings, not int
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_exec,
asyncio.SubprocessProtocol, sys.executable, 123)
# universal_newlines, shell, bufsize must not be set
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_exec,
asyncio.SubprocessProtocol, *args, universal_newlines=True)
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_exec,
asyncio.SubprocessProtocol, *args, shell=True)
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_exec,
asyncio.SubprocessProtocol, *args, bufsize=4096)
def test_subprocess_shell_invalid_args(self):
# expected a string, not an int or a list
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_shell,
asyncio.SubprocessProtocol, 123)
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_shell,
asyncio.SubprocessProtocol, [sys.executable, '-c', 'pass'])
# universal_newlines, shell, bufsize must not be set
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_shell,
asyncio.SubprocessProtocol, 'exit 0', universal_newlines=True)
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_shell,
asyncio.SubprocessProtocol, 'exit 0', shell=True)
self.assertRaises(TypeError,
self.loop.run_until_complete, self.loop.subprocess_shell,
asyncio.SubprocessProtocol, 'exit 0', bufsize=4096)
def test_default_exc_handler_callback(self):
self.loop._process_events = mock.Mock()
def zero_error(fut):
fut.set_result(True)
1/0
# Test call_soon (events.Handle)
with mock.patch('asyncio.base_events.logger') as log:
fut = self.loop.create_future()
self.loop.call_soon(zero_error, fut)
fut.add_done_callback(lambda fut: self.loop.stop())
self.loop.run_forever()
log.error.assert_called_with(
test_utils.MockPattern('Exception in callback.*zero'),
exc_info=(ZeroDivisionError, MOCK_ANY, MOCK_ANY))
# Test call_later (events.TimerHandle)
with mock.patch('asyncio.base_events.logger') as log:
fut = self.loop.create_future()
self.loop.call_later(0.01, zero_error, fut)
fut.add_done_callback(lambda fut: self.loop.stop())
self.loop.run_forever()
log.error.assert_called_with(
test_utils.MockPattern('Exception in callback.*zero'),
exc_info=(ZeroDivisionError, MOCK_ANY, MOCK_ANY))
def test_default_exc_handler_coro(self):
self.loop._process_events = mock.Mock()
async def zero_error_coro():
await asyncio.sleep(0.01)
1/0
# Test Future.__del__
with mock.patch('asyncio.base_events.logger') as log:
fut = asyncio.ensure_future(zero_error_coro(), loop=self.loop)
fut.add_done_callback(lambda *args: self.loop.stop())
self.loop.run_forever()
fut = None # Trigger Future.__del__ or futures._TracebackLogger
support.gc_collect()
# Future.__del__ in logs error with an actual exception context
log.error.assert_called_with(
test_utils.MockPattern('.*exception was never retrieved'),
exc_info=(ZeroDivisionError, MOCK_ANY, MOCK_ANY))
def test_set_exc_handler_invalid(self):
with self.assertRaisesRegex(TypeError, 'A callable object or None'):
self.loop.set_exception_handler('spam')
def test_set_exc_handler_custom(self):
def zero_error():
1/0
def run_loop():
handle = self.loop.call_soon(zero_error)
self.loop._run_once()
return handle
self.loop.set_debug(True)
self.loop._process_events = mock.Mock()
self.assertIsNone(self.loop.get_exception_handler())
mock_handler = mock.Mock()
self.loop.set_exception_handler(mock_handler)
self.assertIs(self.loop.get_exception_handler(), mock_handler)
handle = run_loop()
mock_handler.assert_called_with(self.loop, {
'exception': MOCK_ANY,
'message': test_utils.MockPattern(
'Exception in callback.*zero_error'),
'handle': handle,
'source_traceback': handle._source_traceback,
})
mock_handler.reset_mock()
self.loop.set_exception_handler(None)
with mock.patch('asyncio.base_events.logger') as log:
run_loop()
log.error.assert_called_with(
test_utils.MockPattern(
'Exception in callback.*zero'),
exc_info=(ZeroDivisionError, MOCK_ANY, MOCK_ANY))
self.assertFalse(mock_handler.called)
def test_set_exc_handler_broken(self):
def run_loop():
def zero_error():
1/0
self.loop.call_soon(zero_error)
self.loop._run_once()
def handler(loop, context):
raise AttributeError('spam')
self.loop._process_events = mock.Mock()
self.loop.set_exception_handler(handler)
with mock.patch('asyncio.base_events.logger') as log:
run_loop()
log.error.assert_called_with(
test_utils.MockPattern(
'Unhandled error in exception handler'),
exc_info=(AttributeError, MOCK_ANY, MOCK_ANY))
def test_default_exc_handler_broken(self):
_context = None
class Loop(base_events.BaseEventLoop):
_selector = mock.Mock()
_process_events = mock.Mock()
def default_exception_handler(self, context):
nonlocal _context
_context = context
# Simulates custom buggy "default_exception_handler"
raise ValueError('spam')
loop = Loop()
self.addCleanup(loop.close)
asyncio.set_event_loop(loop)
def run_loop():
def zero_error():
1/0
loop.call_soon(zero_error)
loop._run_once()
with mock.patch('asyncio.base_events.logger') as log:
run_loop()
log.error.assert_called_with(
'Exception in default exception handler',
exc_info=True)
def custom_handler(loop, context):
raise ValueError('ham')
_context = None
loop.set_exception_handler(custom_handler)
with mock.patch('asyncio.base_events.logger') as log:
run_loop()
log.error.assert_called_with(
test_utils.MockPattern('Exception in default exception.*'
'while handling.*in custom'),
exc_info=True)
# Check that original context was passed to default
# exception handler.
self.assertIn('context', _context)
self.assertIs(type(_context['context']['exception']),
ZeroDivisionError)
def test_set_task_factory_invalid(self):
with self.assertRaisesRegex(
TypeError, 'task factory must be a callable or None'):
self.loop.set_task_factory(1)
self.assertIsNone(self.loop.get_task_factory())
def test_set_task_factory(self):
self.loop._process_events = mock.Mock()
class MyTask(asyncio.Task):
pass
async def coro():
pass
factory = lambda loop, coro: MyTask(coro, loop=loop)
self.assertIsNone(self.loop.get_task_factory())
self.loop.set_task_factory(factory)
self.assertIs(self.loop.get_task_factory(), factory)
task = self.loop.create_task(coro())
self.assertTrue(isinstance(task, MyTask))
self.loop.run_until_complete(task)
self.loop.set_task_factory(None)
self.assertIsNone(self.loop.get_task_factory())
task = self.loop.create_task(coro())
self.assertTrue(isinstance(task, asyncio.Task))
self.assertFalse(isinstance(task, MyTask))
self.loop.run_until_complete(task)
def test_env_var_debug(self):
code = '\n'.join((
'import asyncio',
'loop = asyncio.new_event_loop()',
'print(loop.get_debug())'))
# Test with -E to not fail if the unit test was run with
# PYTHONASYNCIODEBUG set to a non-empty string
sts, stdout, stderr = assert_python_ok('-E', '-c', code)
self.assertEqual(stdout.rstrip(), b'False')
sts, stdout, stderr = assert_python_ok('-c', code,
PYTHONASYNCIODEBUG='',
PYTHONDEVMODE='')
self.assertEqual(stdout.rstrip(), b'False')
sts, stdout, stderr = assert_python_ok('-c', code,
PYTHONASYNCIODEBUG='1',
PYTHONDEVMODE='')
self.assertEqual(stdout.rstrip(), b'True')
sts, stdout, stderr = assert_python_ok('-E', '-c', code,
PYTHONASYNCIODEBUG='1')
self.assertEqual(stdout.rstrip(), b'False')
# -X dev
sts, stdout, stderr = assert_python_ok('-E', '-X', 'dev',
'-c', code)
self.assertEqual(stdout.rstrip(), b'True')
def test_create_task(self):
class MyTask(asyncio.Task):
pass
async def test():
pass
class EventLoop(base_events.BaseEventLoop):
def create_task(self, coro):
return MyTask(coro, loop=loop)
loop = EventLoop()
self.set_event_loop(loop)
coro = test()
task = asyncio.ensure_future(coro, loop=loop)
self.assertIsInstance(task, MyTask)
# make warnings quiet
task._log_destroy_pending = False
coro.close()
def test_create_task_error_closes_coro(self):
async def test():
pass
loop = asyncio.new_event_loop()
loop.close()
with warnings.catch_warnings(record=True) as w:
with self.assertRaises(RuntimeError):
asyncio.ensure_future(test(), loop=loop)
self.assertEqual(len(w), 0)
def test_create_named_task_with_default_factory(self):
async def test():
pass
loop = asyncio.new_event_loop()
task = loop.create_task(test(), name='test_task')
try:
self.assertEqual(task.get_name(), 'test_task')
finally:
loop.run_until_complete(task)
loop.close()
def test_create_named_task_with_custom_factory(self):
def task_factory(loop, coro):
return asyncio.Task(coro, loop=loop)
async def test():
pass
loop = asyncio.new_event_loop()
loop.set_task_factory(task_factory)
task = loop.create_task(test(), name='test_task')
try:
self.assertEqual(task.get_name(), 'test_task')
finally:
loop.run_until_complete(task)
loop.close()
def test_run_forever_keyboard_interrupt(self):
# Python issue #22601: ensure that the temporary task created by
# run_forever() consumes the KeyboardInterrupt and so don't log
# a warning
async def raise_keyboard_interrupt():
raise KeyboardInterrupt
self.loop._process_events = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
try:
self.loop.run_until_complete(raise_keyboard_interrupt())
except KeyboardInterrupt:
pass
self.loop.close()
support.gc_collect()
self.assertFalse(self.loop.call_exception_handler.called)
def test_run_until_complete_baseexception(self):
# Python issue #22429: run_until_complete() must not schedule a pending
# call to stop() if the future raised a BaseException
async def raise_keyboard_interrupt():
raise KeyboardInterrupt
self.loop._process_events = mock.Mock()
with self.assertRaises(KeyboardInterrupt):
self.loop.run_until_complete(raise_keyboard_interrupt())
def func():
self.loop.stop()
func.called = True
func.called = False
self.loop.call_soon(self.loop.call_soon, func)
self.loop.run_forever()
self.assertTrue(func.called)
def test_single_selecter_event_callback_after_stopping(self):
# Python issue #25593: A stopped event loop may cause event callbacks
# to run more than once.
event_sentinel = object()
callcount = 0
doer = None
def proc_events(event_list):
nonlocal doer
if event_sentinel in event_list:
doer = self.loop.call_soon(do_event)
def do_event():
nonlocal callcount
callcount += 1
self.loop.call_soon(clear_selector)
def clear_selector():
doer.cancel()
self.loop._selector.select.return_value = ()
self.loop._process_events = proc_events
self.loop._selector.select.return_value = (event_sentinel,)
for i in range(1, 3):
with self.subTest('Loop %d/2' % i):
self.loop.call_soon(self.loop.stop)
self.loop.run_forever()
self.assertEqual(callcount, 1)
def test_run_once(self):
# Simple test for test_utils.run_once(). It may seem strange
# to have a test for this (the function isn't even used!) but
# it's a de-factor standard API for library tests. This tests
# the idiom: loop.call_soon(loop.stop); loop.run_forever().
count = 0
def callback():
nonlocal count
count += 1
self.loop._process_events = mock.Mock()
self.loop.call_soon(callback)
test_utils.run_once(self.loop)
self.assertEqual(count, 1)
def test_run_forever_pre_stopped(self):
# Test that the old idiom for pre-stopping the loop works.
self.loop._process_events = mock.Mock()
self.loop.stop()
self.loop.run_forever()
self.loop._selector.select.assert_called_once_with(0)
def test_custom_run_forever_integration(self):
# Test that the run_forever_setup() and run_forever_cleanup() primitives
# can be used to implement a custom run_forever loop.
self.loop._process_events = mock.Mock()
count = 0
def callback():
nonlocal count
count += 1
self.loop.call_soon(callback)
# Set up the custom event loop
self.loop._run_forever_setup()
# Confirm the loop has been started
self.assertEqual(asyncio.get_running_loop(), self.loop)
self.assertTrue(self.loop.is_running())
# Our custom "event loop" just iterates 10 times before exiting.
for i in range(10):
self.loop._run_once()
# Clean up the event loop
self.loop._run_forever_cleanup()
# Confirm the loop has been cleaned up
with self.assertRaises(RuntimeError):
asyncio.get_running_loop()
self.assertFalse(self.loop.is_running())
# Confirm the loop actually did run, processing events 10 times,
# and invoking the callback once.
self.assertEqual(self.loop._process_events.call_count, 10)
self.assertEqual(count, 1)
async def leave_unfinalized_asyncgen(self):
# Create an async generator, iterate it partially, and leave it
# to be garbage collected.
# Used in async generator finalization tests.
# Depends on implementation details of garbage collector. Changes
# in gc may break this function.
status = {'started': False,
'stopped': False,
'finalized': False}
async def agen():
status['started'] = True
try:
for item in ['ZERO', 'ONE', 'TWO', 'THREE', 'FOUR']:
yield item
finally:
status['finalized'] = True
ag = agen()
ai = ag.__aiter__()
async def iter_one():
try:
item = await ai.__anext__()
except StopAsyncIteration:
return
if item == 'THREE':
status['stopped'] = True
return
asyncio.create_task(iter_one())
asyncio.create_task(iter_one())
return status
def test_asyncgen_finalization_by_gc(self):
# Async generators should be finalized when garbage collected.
self.loop._process_events = mock.Mock()
self.loop._write_to_self = mock.Mock()
with support.disable_gc():
status = self.loop.run_until_complete(self.leave_unfinalized_asyncgen())
while not status['stopped']:
test_utils.run_briefly(self.loop)
self.assertTrue(status['started'])
self.assertTrue(status['stopped'])
self.assertFalse(status['finalized'])
support.gc_collect()
test_utils.run_briefly(self.loop)
self.assertTrue(status['finalized'])
def test_asyncgen_finalization_by_gc_in_other_thread(self):
# Python issue 34769: If garbage collector runs in another
# thread, async generators will not finalize in debug
# mode.
self.loop._process_events = mock.Mock()
self.loop._write_to_self = mock.Mock()
self.loop.set_debug(True)
with support.disable_gc():
status = self.loop.run_until_complete(self.leave_unfinalized_asyncgen())
while not status['stopped']:
test_utils.run_briefly(self.loop)
self.assertTrue(status['started'])
self.assertTrue(status['stopped'])
self.assertFalse(status['finalized'])
self.loop.run_until_complete(
self.loop.run_in_executor(None, support.gc_collect))
test_utils.run_briefly(self.loop)
self.assertTrue(status['finalized'])
class MyProto(asyncio.Protocol):
done = None
def __init__(self, create_future=False):
self.state = 'INITIAL'
self.nbytes = 0
if create_future:
self.done = asyncio.get_running_loop().create_future()
def _assert_state(self, *expected):
if self.state not in expected:
raise AssertionError(f'state: {self.state!r}, expected: {expected!r}')
def connection_made(self, transport):
self.transport = transport
self._assert_state('INITIAL')
self.state = 'CONNECTED'
transport.write(b'GET / HTTP/1.0\r\nHost: example.com\r\n\r\n')
def data_received(self, data):
self._assert_state('CONNECTED')
self.nbytes += len(data)
def eof_received(self):
self._assert_state('CONNECTED')
self.state = 'EOF'
def connection_lost(self, exc):
self._assert_state('CONNECTED', 'EOF')
self.state = 'CLOSED'
if self.done:
self.done.set_result(None)
class MyDatagramProto(asyncio.DatagramProtocol):
done = None
def __init__(self, create_future=False, loop=None):
self.state = 'INITIAL'
self.nbytes = 0
if create_future:
self.done = loop.create_future()
def _assert_state(self, expected):
if self.state != expected:
raise AssertionError(f'state: {self.state!r}, expected: {expected!r}')
def connection_made(self, transport):
self.transport = transport
self._assert_state('INITIAL')
self.state = 'INITIALIZED'
def datagram_received(self, data, addr):
self._assert_state('INITIALIZED')
self.nbytes += len(data)
def error_received(self, exc):
self._assert_state('INITIALIZED')
def connection_lost(self, exc):
self._assert_state('INITIALIZED')
self.state = 'CLOSED'
if self.done:
self.done.set_result(None)
class BaseEventLoopWithSelectorTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = asyncio.SelectorEventLoop()
self.set_event_loop(self.loop)
@mock.patch('socket.getnameinfo')
def test_getnameinfo(self, m_gai):
m_gai.side_effect = lambda *args: 42
r = self.loop.run_until_complete(self.loop.getnameinfo(('abc', 123)))
self.assertEqual(r, 42)
@patch_socket
def test_create_connection_multiple_errors(self, m_socket):
class MyProto(asyncio.Protocol):
pass
async def getaddrinfo(*args, **kw):
return [(2, 1, 6, '', ('107.6.106.82', 80)),
(2, 1, 6, '', ('107.6.106.82', 80))]
def getaddrinfo_task(*args, **kwds):
return self.loop.create_task(getaddrinfo(*args, **kwds))
idx = -1
errors = ['err1', 'err2']
def _socket(*args, **kw):
nonlocal idx, errors
idx += 1
raise OSError(errors[idx])
m_socket.socket = _socket
self.loop.getaddrinfo = getaddrinfo_task
coro = self.loop.create_connection(MyProto, 'example.com', 80)
with self.assertRaises(OSError) as cm:
self.loop.run_until_complete(coro)
self.assertEqual(str(cm.exception), 'Multiple exceptions: err1, err2')
idx = -1
coro = self.loop.create_connection(MyProto, 'example.com', 80, all_errors=True)
with self.assertRaises(ExceptionGroup) as cm:
self.loop.run_until_complete(coro)
self.assertIsInstance(cm.exception, ExceptionGroup)
for e in cm.exception.exceptions:
self.assertIsInstance(e, OSError)
@patch_socket
def test_create_connection_timeout(self, m_socket):
# Ensure that the socket is closed on timeout
sock = mock.Mock()
m_socket.socket.return_value = sock
def getaddrinfo(*args, **kw):
fut = self.loop.create_future()
addr = (socket.AF_INET, socket.SOCK_STREAM, 0, '',
('127.0.0.1', 80))
fut.set_result([addr])
return fut
self.loop.getaddrinfo = getaddrinfo
with mock.patch.object(self.loop, 'sock_connect',
side_effect=asyncio.TimeoutError):
coro = self.loop.create_connection(MyProto, '127.0.0.1', 80)
with self.assertRaises(asyncio.TimeoutError):
self.loop.run_until_complete(coro)
self.assertTrue(sock.close.called)
def test_create_connection_host_port_sock(self):
coro = self.loop.create_connection(
MyProto, 'example.com', 80, sock=object())
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
def test_create_connection_wrong_sock(self):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
with sock:
coro = self.loop.create_connection(MyProto, sock=sock)
with self.assertRaisesRegex(ValueError,
'A Stream Socket was expected'):
self.loop.run_until_complete(coro)
def test_create_server_wrong_sock(self):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
with sock:
coro = self.loop.create_server(MyProto, sock=sock)
with self.assertRaisesRegex(ValueError,
'A Stream Socket was expected'):
self.loop.run_until_complete(coro)
def test_create_server_ssl_timeout_for_plain_socket(self):
coro = self.loop.create_server(
MyProto, 'example.com', 80, ssl_handshake_timeout=1)
with self.assertRaisesRegex(
ValueError,
'ssl_handshake_timeout is only meaningful with ssl'):
self.loop.run_until_complete(coro)
@unittest.skipUnless(hasattr(socket, 'SOCK_NONBLOCK'),
'no socket.SOCK_NONBLOCK (linux only)')
def test_create_server_stream_bittype(self):
sock = socket.socket(
socket.AF_INET, socket.SOCK_STREAM | socket.SOCK_NONBLOCK)
with sock:
coro = self.loop.create_server(lambda: None, sock=sock)
srv = self.loop.run_until_complete(coro)
srv.close()
self.loop.run_until_complete(srv.wait_closed())
@unittest.skipUnless(socket_helper.IPV6_ENABLED, 'no IPv6 support')
def test_create_server_ipv6(self):
async def main():
srv = await asyncio.start_server(lambda: None, '::1', 0)
try:
self.assertGreater(len(srv.sockets), 0)
finally:
srv.close()
await srv.wait_closed()
try:
self.loop.run_until_complete(main())
except OSError as ex:
if (hasattr(errno, 'EADDRNOTAVAIL') and
ex.errno == errno.EADDRNOTAVAIL):
self.skipTest('failed to bind to ::1')
else:
raise
def test_create_datagram_endpoint_wrong_sock(self):
sock = socket.socket(socket.AF_INET)
with sock:
coro = self.loop.create_datagram_endpoint(MyProto, sock=sock)
with self.assertRaisesRegex(ValueError,
'A datagram socket was expected'):
self.loop.run_until_complete(coro)
def test_create_connection_no_host_port_sock(self):
coro = self.loop.create_connection(MyProto)
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
def test_create_connection_no_getaddrinfo(self):
async def getaddrinfo(*args, **kw):
return []
def getaddrinfo_task(*args, **kwds):
return self.loop.create_task(getaddrinfo(*args, **kwds))
self.loop.getaddrinfo = getaddrinfo_task
coro = self.loop.create_connection(MyProto, 'example.com', 80)
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
def test_create_connection_connect_err(self):
async def getaddrinfo(*args, **kw):
return [(2, 1, 6, '', ('107.6.106.82', 80))]
def getaddrinfo_task(*args, **kwds):
return self.loop.create_task(getaddrinfo(*args, **kwds))
self.loop.getaddrinfo = getaddrinfo_task
self.loop.sock_connect = mock.Mock()
self.loop.sock_connect.side_effect = OSError
coro = self.loop.create_connection(MyProto, 'example.com', 80)
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
coro = self.loop.create_connection(MyProto, 'example.com', 80, all_errors=True)
with self.assertRaises(ExceptionGroup) as cm:
self.loop.run_until_complete(coro)
self.assertIsInstance(cm.exception, ExceptionGroup)
self.assertEqual(len(cm.exception.exceptions), 1)
self.assertIsInstance(cm.exception.exceptions[0], OSError)
def test_create_connection_multiple(self):
async def getaddrinfo(*args, **kw):
return [(2, 1, 6, '', ('0.0.0.1', 80)),
(2, 1, 6, '', ('0.0.0.2', 80))]
def getaddrinfo_task(*args, **kwds):
return self.loop.create_task(getaddrinfo(*args, **kwds))
self.loop.getaddrinfo = getaddrinfo_task
self.loop.sock_connect = mock.Mock()
self.loop.sock_connect.side_effect = OSError
coro = self.loop.create_connection(
MyProto, 'example.com', 80, family=socket.AF_INET)
with self.assertRaises(OSError):
self.loop.run_until_complete(coro)
coro = self.loop.create_connection(
MyProto, 'example.com', 80, family=socket.AF_INET, all_errors=True)
with self.assertRaises(ExceptionGroup) as cm:
self.loop.run_until_complete(coro)
self.assertIsInstance(cm.exception, ExceptionGroup)
for e in cm.exception.exceptions:
self.assertIsInstance(e, OSError)
@patch_socket
def test_create_connection_multiple_errors_local_addr(self, m_socket):
def bind(addr):
if addr[0] == '0.0.0.1':
err = OSError('Err')
err.strerror = 'Err'
raise err
m_socket.socket.return_value.bind = bind
async def getaddrinfo(*args, **kw):
return [(2, 1, 6, '', ('0.0.0.1', 80)),
(2, 1, 6, '', ('0.0.0.2', 80))]
def getaddrinfo_task(*args, **kwds):
return self.loop.create_task(getaddrinfo(*args, **kwds))
self.loop.getaddrinfo = getaddrinfo_task
self.loop.sock_connect = mock.Mock()
self.loop.sock_connect.side_effect = OSError('Err2')
coro = self.loop.create_connection(
MyProto, 'example.com', 80, family=socket.AF_INET,
local_addr=(None, 8080))
with self.assertRaises(OSError) as cm:
self.loop.run_until_complete(coro)
self.assertTrue(str(cm.exception).startswith('Multiple exceptions: '))
self.assertTrue(m_socket.socket.return_value.close.called)
coro = self.loop.create_connection(
MyProto, 'example.com', 80, family=socket.AF_INET,
local_addr=(None, 8080), all_errors=True)
with self.assertRaises(ExceptionGroup) as cm:
self.loop.run_until_complete(coro)
self.assertIsInstance(cm.exception, ExceptionGroup)
for e in cm.exception.exceptions:
self.assertIsInstance(e, OSError)
def _test_create_connection_ip_addr(self, m_socket, allow_inet_pton):
# Test the fallback code, even if this system has inet_pton.
if not allow_inet_pton:
del m_socket.inet_pton
m_socket.getaddrinfo = socket.getaddrinfo
sock = m_socket.socket.return_value
self.loop._add_reader = mock.Mock()
self.loop._add_writer = mock.Mock()
coro = self.loop.create_connection(asyncio.Protocol, '1.2.3.4', 80)
t, p = self.loop.run_until_complete(coro)
try:
sock.connect.assert_called_with(('1.2.3.4', 80))
_, kwargs = m_socket.socket.call_args
self.assertEqual(kwargs['family'], m_socket.AF_INET)
self.assertEqual(kwargs['type'], m_socket.SOCK_STREAM)
finally:
t.close()
test_utils.run_briefly(self.loop) # allow transport to close
if socket_helper.IPV6_ENABLED:
sock.family = socket.AF_INET6
coro = self.loop.create_connection(asyncio.Protocol, '::1', 80)
t, p = self.loop.run_until_complete(coro)
try:
# Without inet_pton we use getaddrinfo, which transforms
# ('::1', 80) to ('::1', 80, 0, 0). The last 0s are flow info,
# scope id.
[address] = sock.connect.call_args[0]
host, port = address[:2]
self.assertRegex(host, r'::(0\.)*1')
self.assertEqual(port, 80)
_, kwargs = m_socket.socket.call_args
self.assertEqual(kwargs['family'], m_socket.AF_INET6)
self.assertEqual(kwargs['type'], m_socket.SOCK_STREAM)
finally:
t.close()
test_utils.run_briefly(self.loop) # allow transport to close
@unittest.skipUnless(socket_helper.IPV6_ENABLED, 'no IPv6 support')
@unittest.skipIf(sys.platform.startswith('aix'),
"bpo-25545: IPv6 scope id and getaddrinfo() behave differently on AIX")
@patch_socket
def test_create_connection_ipv6_scope(self, m_socket):
m_socket.getaddrinfo = socket.getaddrinfo
sock = m_socket.socket.return_value
sock.family = socket.AF_INET6
self.loop._add_reader = mock.Mock()
self.loop._add_writer = mock.Mock()
coro = self.loop.create_connection(asyncio.Protocol, 'fe80::1%1', 80)
t, p = self.loop.run_until_complete(coro)
try:
sock.connect.assert_called_with(('fe80::1', 80, 0, 1))
_, kwargs = m_socket.socket.call_args
self.assertEqual(kwargs['family'], m_socket.AF_INET6)
self.assertEqual(kwargs['type'], m_socket.SOCK_STREAM)
finally:
t.close()
test_utils.run_briefly(self.loop) # allow transport to close
@patch_socket
def test_create_connection_ip_addr(self, m_socket):
self._test_create_connection_ip_addr(m_socket, True)
@patch_socket
def test_create_connection_no_inet_pton(self, m_socket):
self._test_create_connection_ip_addr(m_socket, False)
@patch_socket
@unittest.skipIf(
support.is_android and platform.android_ver().api_level < 23,
"Issue gh-71123: this fails on Android before API level 23"
)
def test_create_connection_service_name(self, m_socket):
m_socket.getaddrinfo = socket.getaddrinfo
sock = m_socket.socket.return_value
self.loop._add_reader = mock.Mock()
self.loop._add_writer = mock.Mock()
for service, port in ('http', 80), (b'http', 80):
coro = self.loop.create_connection(asyncio.Protocol,
'127.0.0.1', service)
t, p = self.loop.run_until_complete(coro)
try:
sock.connect.assert_called_with(('127.0.0.1', port))
_, kwargs = m_socket.socket.call_args
self.assertEqual(kwargs['family'], m_socket.AF_INET)
self.assertEqual(kwargs['type'], m_socket.SOCK_STREAM)
finally:
t.close()
test_utils.run_briefly(self.loop) # allow transport to close
for service in 'nonsense', b'nonsense':
coro = self.loop.create_connection(asyncio.Protocol,
'127.0.0.1', service)
with self.assertRaises(OSError):
self.loop.run_until_complete(coro)
def test_create_connection_no_local_addr(self):
async def getaddrinfo(host, *args, **kw):
if host == 'example.com':
return [(2, 1, 6, '', ('107.6.106.82', 80)),
(2, 1, 6, '', ('107.6.106.82', 80))]
else:
return []
def getaddrinfo_task(*args, **kwds):
return self.loop.create_task(getaddrinfo(*args, **kwds))
self.loop.getaddrinfo = getaddrinfo_task
coro = self.loop.create_connection(
MyProto, 'example.com', 80, family=socket.AF_INET,
local_addr=(None, 8080))
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
@patch_socket
def test_create_connection_bluetooth(self, m_socket):
# See http://bugs.python.org/issue27136, fallback to getaddrinfo when
# we can't recognize an address is resolved, e.g. a Bluetooth address.
addr = ('00:01:02:03:04:05', 1)
def getaddrinfo(host, port, *args, **kw):
self.assertEqual((host, port), addr)
return [(999, 1, 999, '', (addr, 1))]
m_socket.getaddrinfo = getaddrinfo
sock = m_socket.socket()
coro = self.loop.sock_connect(sock, addr)
self.loop.run_until_complete(coro)
def test_create_connection_ssl_server_hostname_default(self):
self.loop.getaddrinfo = mock.Mock()
def mock_getaddrinfo(*args, **kwds):
f = self.loop.create_future()
f.set_result([(socket.AF_INET, socket.SOCK_STREAM,
socket.SOL_TCP, '', ('1.2.3.4', 80))])
return f
self.loop.getaddrinfo.side_effect = mock_getaddrinfo
self.loop.sock_connect = mock.Mock()
self.loop.sock_connect.return_value = self.loop.create_future()
self.loop.sock_connect.return_value.set_result(None)
self.loop._make_ssl_transport = mock.Mock()
class _SelectorTransportMock:
_sock = None
def get_extra_info(self, key):
return mock.Mock()
def close(self):
self._sock.close()
def mock_make_ssl_transport(sock, protocol, sslcontext, waiter,
**kwds):
waiter.set_result(None)
transport = _SelectorTransportMock()
transport._sock = sock
return transport
self.loop._make_ssl_transport.side_effect = mock_make_ssl_transport
ANY = mock.ANY
handshake_timeout = object()
shutdown_timeout = object()
# First try the default server_hostname.
self.loop._make_ssl_transport.reset_mock()
coro = self.loop.create_connection(
MyProto, 'python.org', 80, ssl=True,
ssl_handshake_timeout=handshake_timeout,
ssl_shutdown_timeout=shutdown_timeout)
transport, _ = self.loop.run_until_complete(coro)
transport.close()
self.loop._make_ssl_transport.assert_called_with(
ANY, ANY, ANY, ANY,
server_side=False,
server_hostname='python.org',
ssl_handshake_timeout=handshake_timeout,
ssl_shutdown_timeout=shutdown_timeout)
# Next try an explicit server_hostname.
self.loop._make_ssl_transport.reset_mock()
coro = self.loop.create_connection(
MyProto, 'python.org', 80, ssl=True,
server_hostname='perl.com',
ssl_handshake_timeout=handshake_timeout,
ssl_shutdown_timeout=shutdown_timeout)
transport, _ = self.loop.run_until_complete(coro)
transport.close()
self.loop._make_ssl_transport.assert_called_with(
ANY, ANY, ANY, ANY,
server_side=False,
server_hostname='perl.com',
ssl_handshake_timeout=handshake_timeout,
ssl_shutdown_timeout=shutdown_timeout)
# Finally try an explicit empty server_hostname.
self.loop._make_ssl_transport.reset_mock()
coro = self.loop.create_connection(
MyProto, 'python.org', 80, ssl=True,
server_hostname='',
ssl_handshake_timeout=handshake_timeout,
ssl_shutdown_timeout=shutdown_timeout)
transport, _ = self.loop.run_until_complete(coro)
transport.close()
self.loop._make_ssl_transport.assert_called_with(
ANY, ANY, ANY, ANY,
server_side=False,
server_hostname='',
ssl_handshake_timeout=handshake_timeout,
ssl_shutdown_timeout=shutdown_timeout)
def test_create_connection_no_ssl_server_hostname_errors(self):
# When not using ssl, server_hostname must be None.
coro = self.loop.create_connection(MyProto, 'python.org', 80,
server_hostname='')
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
coro = self.loop.create_connection(MyProto, 'python.org', 80,
server_hostname='python.org')
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
def test_create_connection_ssl_server_hostname_errors(self):
# When using ssl, server_hostname may be None if host is non-empty.
coro = self.loop.create_connection(MyProto, '', 80, ssl=True)
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
coro = self.loop.create_connection(MyProto, None, 80, ssl=True)
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
sock = socket.socket()
coro = self.loop.create_connection(MyProto, None, None,
ssl=True, sock=sock)
self.addCleanup(sock.close)
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
def test_create_connection_ssl_timeout_for_plain_socket(self):
coro = self.loop.create_connection(
MyProto, 'example.com', 80, ssl_handshake_timeout=1)
with self.assertRaisesRegex(
ValueError,
'ssl_handshake_timeout is only meaningful with ssl'):
self.loop.run_until_complete(coro)
def test_create_server_empty_host(self):
# if host is empty string use None instead
host = object()
async def getaddrinfo(*args, **kw):
nonlocal host
host = args[0]
return []
def getaddrinfo_task(*args, **kwds):
return self.loop.create_task(getaddrinfo(*args, **kwds))
self.loop.getaddrinfo = getaddrinfo_task
fut = self.loop.create_server(MyProto, '', 0)
self.assertRaises(OSError, self.loop.run_until_complete, fut)
self.assertIsNone(host)
def test_create_server_host_port_sock(self):
fut = self.loop.create_server(
MyProto, '0.0.0.0', 0, sock=object())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
def test_create_server_no_host_port_sock(self):
fut = self.loop.create_server(MyProto)
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
def test_create_server_no_getaddrinfo(self):
getaddrinfo = self.loop.getaddrinfo = mock.Mock()
getaddrinfo.return_value = self.loop.create_future()
getaddrinfo.return_value.set_result(None)
f = self.loop.create_server(MyProto, 'python.org', 0)
self.assertRaises(OSError, self.loop.run_until_complete, f)
@patch_socket
def test_create_server_nosoreuseport(self, m_socket):
m_socket.getaddrinfo = socket.getaddrinfo
del m_socket.SO_REUSEPORT
m_socket.socket.return_value = mock.Mock()
f = self.loop.create_server(
MyProto, '0.0.0.0', 0, reuse_port=True)
self.assertRaises(ValueError, self.loop.run_until_complete, f)
@patch_socket
def test_create_server_soreuseport_only_defined(self, m_socket):
m_socket.getaddrinfo = socket.getaddrinfo
m_socket.socket.return_value = mock.Mock()
m_socket.SO_REUSEPORT = -1
f = self.loop.create_server(
MyProto, '0.0.0.0', 0, reuse_port=True)
self.assertRaises(ValueError, self.loop.run_until_complete, f)
@patch_socket
def test_create_server_cant_bind(self, m_socket):
class Err(OSError):
strerror = 'error'
m_socket.getaddrinfo.return_value = [
(2, 1, 6, '', ('127.0.0.1', 10100))]
m_sock = m_socket.socket.return_value = mock.Mock()
m_sock.bind.side_effect = Err
fut = self.loop.create_server(MyProto, '0.0.0.0', 0)
self.assertRaises(OSError, self.loop.run_until_complete, fut)
self.assertTrue(m_sock.close.called)
@patch_socket
def test_create_datagram_endpoint_no_addrinfo(self, m_socket):
m_socket.getaddrinfo.return_value = []
coro = self.loop.create_datagram_endpoint(
MyDatagramProto, local_addr=('localhost', 0))
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
def test_create_datagram_endpoint_addr_error(self):
coro = self.loop.create_datagram_endpoint(
MyDatagramProto, local_addr='localhost')
self.assertRaises(
TypeError, self.loop.run_until_complete, coro)
coro = self.loop.create_datagram_endpoint(
MyDatagramProto, local_addr=('localhost', 1, 2, 3))
self.assertRaises(
TypeError, self.loop.run_until_complete, coro)
def test_create_datagram_endpoint_connect_err(self):
self.loop.sock_connect = mock.Mock()
self.loop.sock_connect.side_effect = OSError
coro = self.loop.create_datagram_endpoint(
asyncio.DatagramProtocol, remote_addr=('127.0.0.1', 0))
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
def test_create_datagram_endpoint_allow_broadcast(self):
protocol = MyDatagramProto(create_future=True, loop=self.loop)
self.loop.sock_connect = sock_connect = mock.Mock()
sock_connect.return_value = []
coro = self.loop.create_datagram_endpoint(
lambda: protocol,
remote_addr=('127.0.0.1', 0),
allow_broadcast=True)
transport, _ = self.loop.run_until_complete(coro)
self.assertFalse(sock_connect.called)
transport.close()
self.loop.run_until_complete(protocol.done)
self.assertEqual('CLOSED', protocol.state)
@patch_socket
def test_create_datagram_endpoint_socket_err(self, m_socket):
m_socket.getaddrinfo = socket.getaddrinfo
m_socket.socket.side_effect = OSError
coro = self.loop.create_datagram_endpoint(
asyncio.DatagramProtocol, family=socket.AF_INET)
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
coro = self.loop.create_datagram_endpoint(
asyncio.DatagramProtocol, local_addr=('127.0.0.1', 0))
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
@unittest.skipUnless(socket_helper.IPV6_ENABLED, 'IPv6 not supported or enabled')
def test_create_datagram_endpoint_no_matching_family(self):
coro = self.loop.create_datagram_endpoint(
asyncio.DatagramProtocol,
remote_addr=('127.0.0.1', 0), local_addr=('::1', 0))
self.assertRaises(
ValueError, self.loop.run_until_complete, coro)
@patch_socket
def test_create_datagram_endpoint_setblk_err(self, m_socket):
m_socket.socket.return_value.setblocking.side_effect = OSError
coro = self.loop.create_datagram_endpoint(
asyncio.DatagramProtocol, family=socket.AF_INET)
self.assertRaises(
OSError, self.loop.run_until_complete, coro)
self.assertTrue(
m_socket.socket.return_value.close.called)
def test_create_datagram_endpoint_noaddr_nofamily(self):
coro = self.loop.create_datagram_endpoint(
asyncio.DatagramProtocol)
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
@patch_socket
def test_create_datagram_endpoint_cant_bind(self, m_socket):
class Err(OSError):
pass
m_socket.getaddrinfo = socket.getaddrinfo
m_sock = m_socket.socket.return_value = mock.Mock()
m_sock.bind.side_effect = Err
fut = self.loop.create_datagram_endpoint(
MyDatagramProto,
local_addr=('127.0.0.1', 0), family=socket.AF_INET)
self.assertRaises(Err, self.loop.run_until_complete, fut)
self.assertTrue(m_sock.close.called)
def test_create_datagram_endpoint_sock(self):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(('127.0.0.1', 0))
fut = self.loop.create_datagram_endpoint(
lambda: MyDatagramProto(create_future=True, loop=self.loop),
sock=sock)
transport, protocol = self.loop.run_until_complete(fut)
transport.close()
self.loop.run_until_complete(protocol.done)
self.assertEqual('CLOSED', protocol.state)
@unittest.skipUnless(hasattr(socket, 'AF_UNIX'), 'No UNIX Sockets')
def test_create_datagram_endpoint_sock_unix(self):
fut = self.loop.create_datagram_endpoint(
lambda: MyDatagramProto(create_future=True, loop=self.loop),
family=socket.AF_UNIX)
transport, protocol = self.loop.run_until_complete(fut)
self.assertEqual(transport._sock.family, socket.AF_UNIX)
transport.close()
self.loop.run_until_complete(protocol.done)
self.assertEqual('CLOSED', protocol.state)
@socket_helper.skip_unless_bind_unix_socket
def test_create_datagram_endpoint_existing_sock_unix(self):
with test_utils.unix_socket_path() as path:
sock = socket.socket(socket.AF_UNIX, type=socket.SOCK_DGRAM)
sock.bind(path)
sock.close()
coro = self.loop.create_datagram_endpoint(
lambda: MyDatagramProto(create_future=True, loop=self.loop),
path, family=socket.AF_UNIX)
transport, protocol = self.loop.run_until_complete(coro)
transport.close()
self.loop.run_until_complete(protocol.done)
def test_create_datagram_endpoint_sock_sockopts(self):
class FakeSock:
type = socket.SOCK_DGRAM
fut = self.loop.create_datagram_endpoint(
MyDatagramProto, local_addr=('127.0.0.1', 0), sock=FakeSock())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
fut = self.loop.create_datagram_endpoint(
MyDatagramProto, remote_addr=('127.0.0.1', 0), sock=FakeSock())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
fut = self.loop.create_datagram_endpoint(
MyDatagramProto, family=1, sock=FakeSock())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
fut = self.loop.create_datagram_endpoint(
MyDatagramProto, proto=1, sock=FakeSock())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
fut = self.loop.create_datagram_endpoint(
MyDatagramProto, flags=1, sock=FakeSock())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
fut = self.loop.create_datagram_endpoint(
MyDatagramProto, reuse_port=True, sock=FakeSock())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
fut = self.loop.create_datagram_endpoint(
MyDatagramProto, allow_broadcast=True, sock=FakeSock())
self.assertRaises(ValueError, self.loop.run_until_complete, fut)
@unittest.skipIf(sys.platform == 'vxworks',
"SO_BROADCAST is enabled by default on VxWorks")
def test_create_datagram_endpoint_sockopts(self):
# Socket options should not be applied unless asked for.
# SO_REUSEPORT is not available on all platforms.
coro = self.loop.create_datagram_endpoint(
lambda: MyDatagramProto(create_future=True, loop=self.loop),
local_addr=('127.0.0.1', 0))
transport, protocol = self.loop.run_until_complete(coro)
sock = transport.get_extra_info('socket')
reuseport_supported = hasattr(socket, 'SO_REUSEPORT')
if reuseport_supported:
self.assertFalse(
sock.getsockopt(
socket.SOL_SOCKET, socket.SO_REUSEPORT))
self.assertFalse(
sock.getsockopt(
socket.SOL_SOCKET, socket.SO_BROADCAST))
transport.close()
self.loop.run_until_complete(protocol.done)
self.assertEqual('CLOSED', protocol.state)
coro = self.loop.create_datagram_endpoint(
lambda: MyDatagramProto(create_future=True, loop=self.loop),
local_addr=('127.0.0.1', 0),
reuse_port=reuseport_supported,
allow_broadcast=True)
transport, protocol = self.loop.run_until_complete(coro)
sock = transport.get_extra_info('socket')
self.assertFalse(
sock.getsockopt(
socket.SOL_SOCKET, socket.SO_REUSEADDR))
if reuseport_supported:
self.assertTrue(
sock.getsockopt(
socket.SOL_SOCKET, socket.SO_REUSEPORT))
self.assertTrue(
sock.getsockopt(
socket.SOL_SOCKET, socket.SO_BROADCAST))
transport.close()
self.loop.run_until_complete(protocol.done)
self.assertEqual('CLOSED', protocol.state)
@patch_socket
def test_create_datagram_endpoint_nosoreuseport(self, m_socket):
del m_socket.SO_REUSEPORT
m_socket.socket.return_value = mock.Mock()
coro = self.loop.create_datagram_endpoint(
lambda: MyDatagramProto(loop=self.loop),
local_addr=('127.0.0.1', 0),
reuse_port=True)
self.assertRaises(ValueError, self.loop.run_until_complete, coro)
@patch_socket
def test_create_datagram_endpoint_ip_addr(self, m_socket):
def getaddrinfo(*args, **kw):
self.fail('should not have called getaddrinfo')
m_socket.getaddrinfo = getaddrinfo
m_socket.socket.return_value.bind = bind = mock.Mock()
self.loop._add_reader = mock.Mock()
reuseport_supported = hasattr(socket, 'SO_REUSEPORT')
coro = self.loop.create_datagram_endpoint(
lambda: MyDatagramProto(loop=self.loop),
local_addr=('1.2.3.4', 0),
reuse_port=reuseport_supported)
t, p = self.loop.run_until_complete(coro)
try:
bind.assert_called_with(('1.2.3.4', 0))
m_socket.socket.assert_called_with(family=m_socket.AF_INET,
proto=m_socket.IPPROTO_UDP,
type=m_socket.SOCK_DGRAM)
finally:
t.close()
test_utils.run_briefly(self.loop) # allow transport to close
def test_accept_connection_retry(self):
sock = mock.Mock()
sock.accept.side_effect = BlockingIOError()
self.loop._accept_connection(MyProto, sock)
self.assertFalse(sock.close.called)
@mock.patch('asyncio.base_events.logger')
def test_accept_connection_exception(self, m_log):
sock = mock.Mock()
sock.fileno.return_value = 10
sock.accept.side_effect = OSError(errno.EMFILE, 'Too many open files')
self.loop._remove_reader = mock.Mock()
self.loop.call_later = mock.Mock()
self.loop._accept_connection(MyProto, sock)
self.assertTrue(m_log.error.called)
self.assertFalse(sock.close.called)
self.loop._remove_reader.assert_called_with(10)
self.loop.call_later.assert_called_with(
constants.ACCEPT_RETRY_DELAY,
# self.loop._start_serving
mock.ANY,
MyProto, sock, None, None, mock.ANY, mock.ANY, mock.ANY)
def test_call_coroutine(self):
async def simple_coroutine():
pass
self.loop.set_debug(True)
coro_func = simple_coroutine
coro_obj = coro_func()
self.addCleanup(coro_obj.close)
for func in (coro_func, coro_obj):
with self.assertRaises(TypeError):
self.loop.call_soon(func)
with self.assertRaises(TypeError):
self.loop.call_soon_threadsafe(func)
with self.assertRaises(TypeError):
self.loop.call_later(60, func)
with self.assertRaises(TypeError):
self.loop.call_at(self.loop.time() + 60, func)
with self.assertRaises(TypeError):
self.loop.run_until_complete(
self.loop.run_in_executor(None, func))
@mock.patch('asyncio.base_events.logger')
def test_log_slow_callbacks(self, m_logger):
def stop_loop_cb(loop):
loop.stop()
async def stop_loop_coro(loop):
loop.stop()
asyncio.set_event_loop(self.loop)
self.loop.set_debug(True)
self.loop.slow_callback_duration = 0.0
# slow callback
self.loop.call_soon(stop_loop_cb, self.loop)
self.loop.run_forever()
fmt, *args = m_logger.warning.call_args[0]
self.assertRegex(fmt % tuple(args),
"^Executing <Handle.*stop_loop_cb.*> "
"took .* seconds$")
# slow task
asyncio.ensure_future(stop_loop_coro(self.loop), loop=self.loop)
self.loop.run_forever()
fmt, *args = m_logger.warning.call_args[0]
self.assertRegex(fmt % tuple(args),
"^Executing <Task.*stop_loop_coro.*> "
"took .* seconds$")
class RunningLoopTests(unittest.TestCase):
def test_running_loop_within_a_loop(self):
async def runner(loop):
loop.run_forever()
loop = asyncio.new_event_loop()
outer_loop = asyncio.new_event_loop()
try:
with self.assertRaisesRegex(RuntimeError,
'while another loop is running'):
outer_loop.run_until_complete(runner(loop))
finally:
loop.close()
outer_loop.close()
class BaseLoopSockSendfileTests(test_utils.TestCase):
DATA = b"12345abcde" * 16 * 1024 # 160 KiB
class MyProto(asyncio.Protocol):
def __init__(self, loop):
self.started = False
self.closed = False
self.data = bytearray()
self.fut = loop.create_future()
self.transport = None
def connection_made(self, transport):
self.started = True
self.transport = transport
def data_received(self, data):
self.data.extend(data)
def connection_lost(self, exc):
self.closed = True
self.fut.set_result(None)
self.transport = None
async def wait_closed(self):
await self.fut
@classmethod
def setUpClass(cls):
cls.__old_bufsize = constants.SENDFILE_FALLBACK_READBUFFER_SIZE
constants.SENDFILE_FALLBACK_READBUFFER_SIZE = 1024 * 16
with open(os_helper.TESTFN, 'wb') as fp:
fp.write(cls.DATA)
super().setUpClass()
@classmethod
def tearDownClass(cls):
constants.SENDFILE_FALLBACK_READBUFFER_SIZE = cls.__old_bufsize
os_helper.unlink(os_helper.TESTFN)
super().tearDownClass()
def setUp(self):
from asyncio.selector_events import BaseSelectorEventLoop
# BaseSelectorEventLoop() has no native implementation
self.loop = BaseSelectorEventLoop()
self.set_event_loop(self.loop)
self.file = open(os_helper.TESTFN, 'rb')
self.addCleanup(self.file.close)
super().setUp()
def make_socket(self, blocking=False):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setblocking(blocking)
self.addCleanup(sock.close)
return sock
def run_loop(self, coro):
return self.loop.run_until_complete(coro)
def prepare(self):
sock = self.make_socket()
proto = self.MyProto(self.loop)
server = self.run_loop(self.loop.create_server(
lambda: proto, socket_helper.HOST, 0, family=socket.AF_INET))
addr = server.sockets[0].getsockname()
for _ in range(10):
try:
self.run_loop(self.loop.sock_connect(sock, addr))
except OSError:
self.run_loop(asyncio.sleep(0.5))
continue
else:
break
else:
# One last try, so we get the exception
self.run_loop(self.loop.sock_connect(sock, addr))
def cleanup():
server.close()
sock.close()
if proto.transport is not None:
proto.transport.close()
self.run_loop(proto.wait_closed())
self.run_loop(server.wait_closed())
self.addCleanup(cleanup)
return sock, proto
def test__sock_sendfile_native_failure(self):
sock, proto = self.prepare()
with self.assertRaisesRegex(asyncio.SendfileNotAvailableError,
"sendfile is not available"):
self.run_loop(self.loop._sock_sendfile_native(sock, self.file,
0, None))
self.assertEqual(proto.data, b'')
self.assertEqual(self.file.tell(), 0)
def test_sock_sendfile_no_fallback(self):
sock, proto = self.prepare()
with self.assertRaisesRegex(asyncio.SendfileNotAvailableError,
"sendfile is not available"):
self.run_loop(self.loop.sock_sendfile(sock, self.file,
fallback=False))
self.assertEqual(self.file.tell(), 0)
self.assertEqual(proto.data, b'')
def test_sock_sendfile_fallback(self):
sock, proto = self.prepare()
ret = self.run_loop(self.loop.sock_sendfile(sock, self.file))
sock.close()
self.run_loop(proto.wait_closed())
self.assertEqual(ret, len(self.DATA))
self.assertEqual(self.file.tell(), len(self.DATA))
self.assertEqual(proto.data, self.DATA)
def test_sock_sendfile_fallback_offset_and_count(self):
sock, proto = self.prepare()
ret = self.run_loop(self.loop.sock_sendfile(sock, self.file,
1000, 2000))
sock.close()
self.run_loop(proto.wait_closed())
self.assertEqual(ret, 2000)
self.assertEqual(self.file.tell(), 3000)
self.assertEqual(proto.data, self.DATA[1000:3000])
def test_blocking_socket(self):
self.loop.set_debug(True)
sock = self.make_socket(blocking=True)
with self.assertRaisesRegex(ValueError, "must be non-blocking"):
self.run_loop(self.loop.sock_sendfile(sock, self.file))
def test_nonbinary_file(self):
sock = self.make_socket()
with open(os_helper.TESTFN, encoding="utf-8") as f:
with self.assertRaisesRegex(ValueError, "binary mode"):
self.run_loop(self.loop.sock_sendfile(sock, f))
def test_nonstream_socket(self):
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.setblocking(False)
self.addCleanup(sock.close)
with self.assertRaisesRegex(ValueError, "only SOCK_STREAM type"):
self.run_loop(self.loop.sock_sendfile(sock, self.file))
def test_notint_count(self):
sock = self.make_socket()
with self.assertRaisesRegex(TypeError,
"count must be a positive integer"):
self.run_loop(self.loop.sock_sendfile(sock, self.file, 0, 'count'))
def test_negative_count(self):
sock = self.make_socket()
with self.assertRaisesRegex(ValueError,
"count must be a positive integer"):
self.run_loop(self.loop.sock_sendfile(sock, self.file, 0, -1))
def test_notint_offset(self):
sock = self.make_socket()
with self.assertRaisesRegex(TypeError,
"offset must be a non-negative integer"):
self.run_loop(self.loop.sock_sendfile(sock, self.file, 'offset'))
def test_negative_offset(self):
sock = self.make_socket()
with self.assertRaisesRegex(ValueError,
"offset must be a non-negative integer"):
self.run_loop(self.loop.sock_sendfile(sock, self.file, -1))
class TestSelectorUtils(test_utils.TestCase):
def check_set_nodelay(self, sock):
opt = sock.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY)
self.assertFalse(opt)
base_events._set_nodelay(sock)
opt = sock.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY)
self.assertTrue(opt)
@unittest.skipUnless(hasattr(socket, 'TCP_NODELAY'),
'need socket.TCP_NODELAY')
def test_set_nodelay(self):
sock = socket.socket(family=socket.AF_INET, type=socket.SOCK_STREAM,
proto=socket.IPPROTO_TCP)
with sock:
self.check_set_nodelay(sock)
sock = socket.socket(family=socket.AF_INET, type=socket.SOCK_STREAM,
proto=socket.IPPROTO_TCP)
with sock:
sock.setblocking(False)
self.check_set_nodelay(sock)
if __name__ == '__main__':
unittest.main()
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