Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 7f193e89698818de5fc60a8667de786036bbef95 authored by Ned Deily on 02 July 2019, 18:51:09 UTC
3.7.4rc2
3.7.4rc2
Tip revision: 7f193e8
test_unix_events.py
"""Tests for unix_events.py."""
import collections
import contextlib
import errno
import io
import os
import pathlib
import signal
import socket
import stat
import sys
import tempfile
import threading
import unittest
from unittest import mock
from test import support
if sys.platform == 'win32':
raise unittest.SkipTest('UNIX only')
import asyncio
from asyncio import log
from asyncio import base_events
from asyncio import events
from asyncio import unix_events
from test.test_asyncio import utils as test_utils
MOCK_ANY = mock.ANY
def close_pipe_transport(transport):
# Don't call transport.close() because the event loop and the selector
# are mocked
if transport._pipe is None:
return
transport._pipe.close()
transport._pipe = None
@unittest.skipUnless(signal, 'Signals are not supported')
class SelectorEventLoopSignalTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = asyncio.SelectorEventLoop()
self.set_event_loop(self.loop)
def test_check_signal(self):
self.assertRaises(
TypeError, self.loop._check_signal, '1')
self.assertRaises(
ValueError, self.loop._check_signal, signal.NSIG + 1)
def test_handle_signal_no_handler(self):
self.loop._handle_signal(signal.NSIG + 1)
def test_handle_signal_cancelled_handler(self):
h = asyncio.Handle(mock.Mock(), (),
loop=mock.Mock())
h.cancel()
self.loop._signal_handlers[signal.NSIG + 1] = h
self.loop.remove_signal_handler = mock.Mock()
self.loop._handle_signal(signal.NSIG + 1)
self.loop.remove_signal_handler.assert_called_with(signal.NSIG + 1)
@mock.patch('asyncio.unix_events.signal')
def test_add_signal_handler_setup_error(self, m_signal):
m_signal.NSIG = signal.NSIG
m_signal.set_wakeup_fd.side_effect = ValueError
self.assertRaises(
RuntimeError,
self.loop.add_signal_handler,
signal.SIGINT, lambda: True)
@mock.patch('asyncio.unix_events.signal')
def test_add_signal_handler_coroutine_error(self, m_signal):
m_signal.NSIG = signal.NSIG
async def simple_coroutine():
pass
# callback must not be a coroutine function
coro_func = simple_coroutine
coro_obj = coro_func()
self.addCleanup(coro_obj.close)
for func in (coro_func, coro_obj):
self.assertRaisesRegex(
TypeError, 'coroutines cannot be used with add_signal_handler',
self.loop.add_signal_handler,
signal.SIGINT, func)
@mock.patch('asyncio.unix_events.signal')
def test_add_signal_handler(self, m_signal):
m_signal.NSIG = signal.NSIG
cb = lambda: True
self.loop.add_signal_handler(signal.SIGHUP, cb)
h = self.loop._signal_handlers.get(signal.SIGHUP)
self.assertIsInstance(h, asyncio.Handle)
self.assertEqual(h._callback, cb)
@mock.patch('asyncio.unix_events.signal')
def test_add_signal_handler_install_error(self, m_signal):
m_signal.NSIG = signal.NSIG
def set_wakeup_fd(fd):
if fd == -1:
raise ValueError()
m_signal.set_wakeup_fd = set_wakeup_fd
class Err(OSError):
errno = errno.EFAULT
m_signal.signal.side_effect = Err
self.assertRaises(
Err,
self.loop.add_signal_handler,
signal.SIGINT, lambda: True)
@mock.patch('asyncio.unix_events.signal')
@mock.patch('asyncio.base_events.logger')
def test_add_signal_handler_install_error2(self, m_logging, m_signal):
m_signal.NSIG = signal.NSIG
class Err(OSError):
errno = errno.EINVAL
m_signal.signal.side_effect = Err
self.loop._signal_handlers[signal.SIGHUP] = lambda: True
self.assertRaises(
RuntimeError,
self.loop.add_signal_handler,
signal.SIGINT, lambda: True)
self.assertFalse(m_logging.info.called)
self.assertEqual(1, m_signal.set_wakeup_fd.call_count)
@mock.patch('asyncio.unix_events.signal')
@mock.patch('asyncio.base_events.logger')
def test_add_signal_handler_install_error3(self, m_logging, m_signal):
class Err(OSError):
errno = errno.EINVAL
m_signal.signal.side_effect = Err
m_signal.NSIG = signal.NSIG
self.assertRaises(
RuntimeError,
self.loop.add_signal_handler,
signal.SIGINT, lambda: True)
self.assertFalse(m_logging.info.called)
self.assertEqual(2, m_signal.set_wakeup_fd.call_count)
@mock.patch('asyncio.unix_events.signal')
def test_remove_signal_handler(self, m_signal):
m_signal.NSIG = signal.NSIG
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
self.assertTrue(
self.loop.remove_signal_handler(signal.SIGHUP))
self.assertTrue(m_signal.set_wakeup_fd.called)
self.assertTrue(m_signal.signal.called)
self.assertEqual(
(signal.SIGHUP, m_signal.SIG_DFL), m_signal.signal.call_args[0])
@mock.patch('asyncio.unix_events.signal')
def test_remove_signal_handler_2(self, m_signal):
m_signal.NSIG = signal.NSIG
m_signal.SIGINT = signal.SIGINT
self.loop.add_signal_handler(signal.SIGINT, lambda: True)
self.loop._signal_handlers[signal.SIGHUP] = object()
m_signal.set_wakeup_fd.reset_mock()
self.assertTrue(
self.loop.remove_signal_handler(signal.SIGINT))
self.assertFalse(m_signal.set_wakeup_fd.called)
self.assertTrue(m_signal.signal.called)
self.assertEqual(
(signal.SIGINT, m_signal.default_int_handler),
m_signal.signal.call_args[0])
@mock.patch('asyncio.unix_events.signal')
@mock.patch('asyncio.base_events.logger')
def test_remove_signal_handler_cleanup_error(self, m_logging, m_signal):
m_signal.NSIG = signal.NSIG
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
m_signal.set_wakeup_fd.side_effect = ValueError
self.loop.remove_signal_handler(signal.SIGHUP)
self.assertTrue(m_logging.info)
@mock.patch('asyncio.unix_events.signal')
def test_remove_signal_handler_error(self, m_signal):
m_signal.NSIG = signal.NSIG
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
m_signal.signal.side_effect = OSError
self.assertRaises(
OSError, self.loop.remove_signal_handler, signal.SIGHUP)
@mock.patch('asyncio.unix_events.signal')
def test_remove_signal_handler_error2(self, m_signal):
m_signal.NSIG = signal.NSIG
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
class Err(OSError):
errno = errno.EINVAL
m_signal.signal.side_effect = Err
self.assertRaises(
RuntimeError, self.loop.remove_signal_handler, signal.SIGHUP)
@mock.patch('asyncio.unix_events.signal')
def test_close(self, m_signal):
m_signal.NSIG = signal.NSIG
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
self.loop.add_signal_handler(signal.SIGCHLD, lambda: True)
self.assertEqual(len(self.loop._signal_handlers), 2)
m_signal.set_wakeup_fd.reset_mock()
self.loop.close()
self.assertEqual(len(self.loop._signal_handlers), 0)
m_signal.set_wakeup_fd.assert_called_once_with(-1)
@mock.patch('asyncio.unix_events.sys')
@mock.patch('asyncio.unix_events.signal')
def test_close_on_finalizing(self, m_signal, m_sys):
m_signal.NSIG = signal.NSIG
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
self.assertEqual(len(self.loop._signal_handlers), 1)
m_sys.is_finalizing.return_value = True
m_signal.signal.reset_mock()
with self.assertWarnsRegex(ResourceWarning,
"skipping signal handlers removal"):
self.loop.close()
self.assertEqual(len(self.loop._signal_handlers), 0)
self.assertFalse(m_signal.signal.called)
@unittest.skipUnless(hasattr(socket, 'AF_UNIX'),
'UNIX Sockets are not supported')
class SelectorEventLoopUnixSocketTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = asyncio.SelectorEventLoop()
self.set_event_loop(self.loop)
@support.skip_unless_bind_unix_socket
def test_create_unix_server_existing_path_sock(self):
with test_utils.unix_socket_path() as path:
sock = socket.socket(socket.AF_UNIX)
sock.bind(path)
sock.listen(1)
sock.close()
coro = self.loop.create_unix_server(lambda: None, path)
srv = self.loop.run_until_complete(coro)
srv.close()
self.loop.run_until_complete(srv.wait_closed())
@support.skip_unless_bind_unix_socket
def test_create_unix_server_pathlib(self):
with test_utils.unix_socket_path() as path:
path = pathlib.Path(path)
srv_coro = self.loop.create_unix_server(lambda: None, path)
srv = self.loop.run_until_complete(srv_coro)
srv.close()
self.loop.run_until_complete(srv.wait_closed())
def test_create_unix_connection_pathlib(self):
with test_utils.unix_socket_path() as path:
path = pathlib.Path(path)
coro = self.loop.create_unix_connection(lambda: None, path)
with self.assertRaises(FileNotFoundError):
# If pathlib.Path wasn't supported, the exception would be
# different.
self.loop.run_until_complete(coro)
def test_create_unix_server_existing_path_nonsock(self):
with tempfile.NamedTemporaryFile() as file:
coro = self.loop.create_unix_server(lambda: None, file.name)
with self.assertRaisesRegex(OSError,
'Address.*is already in use'):
self.loop.run_until_complete(coro)
def test_create_unix_server_ssl_bool(self):
coro = self.loop.create_unix_server(lambda: None, path='spam',
ssl=True)
with self.assertRaisesRegex(TypeError,
'ssl argument must be an SSLContext'):
self.loop.run_until_complete(coro)
def test_create_unix_server_nopath_nosock(self):
coro = self.loop.create_unix_server(lambda: None, path=None)
with self.assertRaisesRegex(ValueError,
'path was not specified, and no sock'):
self.loop.run_until_complete(coro)
def test_create_unix_server_path_inetsock(self):
sock = socket.socket()
with sock:
coro = self.loop.create_unix_server(lambda: None, path=None,
sock=sock)
with self.assertRaisesRegex(ValueError,
'A UNIX Domain Stream.*was expected'):
self.loop.run_until_complete(coro)
def test_create_unix_server_path_dgram(self):
sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
with sock:
coro = self.loop.create_unix_server(lambda: None, path=None,
sock=sock)
with self.assertRaisesRegex(ValueError,
'A UNIX Domain Stream.*was expected'):
self.loop.run_until_complete(coro)
@unittest.skipUnless(hasattr(socket, 'SOCK_NONBLOCK'),
'no socket.SOCK_NONBLOCK (linux only)')
@support.skip_unless_bind_unix_socket
def test_create_unix_server_path_stream_bittype(self):
sock = socket.socket(
socket.AF_UNIX, socket.SOCK_STREAM | socket.SOCK_NONBLOCK)
with tempfile.NamedTemporaryFile() as file:
fn = file.name
try:
with sock:
sock.bind(fn)
coro = self.loop.create_unix_server(lambda: None, path=None,
sock=sock)
srv = self.loop.run_until_complete(coro)
srv.close()
self.loop.run_until_complete(srv.wait_closed())
finally:
os.unlink(fn)
def test_create_unix_server_ssl_timeout_with_plain_sock(self):
coro = self.loop.create_unix_server(lambda: None, path='spam',
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_unix_connection_path_inetsock(self):
sock = socket.socket()
with sock:
coro = self.loop.create_unix_connection(lambda: None,
sock=sock)
with self.assertRaisesRegex(ValueError,
'A UNIX Domain Stream.*was expected'):
self.loop.run_until_complete(coro)
@mock.patch('asyncio.unix_events.socket')
def test_create_unix_server_bind_error(self, m_socket):
# Ensure that the socket is closed on any bind error
sock = mock.Mock()
m_socket.socket.return_value = sock
sock.bind.side_effect = OSError
coro = self.loop.create_unix_server(lambda: None, path="/test")
with self.assertRaises(OSError):
self.loop.run_until_complete(coro)
self.assertTrue(sock.close.called)
sock.bind.side_effect = MemoryError
coro = self.loop.create_unix_server(lambda: None, path="/test")
with self.assertRaises(MemoryError):
self.loop.run_until_complete(coro)
self.assertTrue(sock.close.called)
def test_create_unix_connection_path_sock(self):
coro = self.loop.create_unix_connection(
lambda: None, os.devnull, sock=object())
with self.assertRaisesRegex(ValueError, 'path and sock can not be'):
self.loop.run_until_complete(coro)
def test_create_unix_connection_nopath_nosock(self):
coro = self.loop.create_unix_connection(
lambda: None, None)
with self.assertRaisesRegex(ValueError,
'no path and sock were specified'):
self.loop.run_until_complete(coro)
def test_create_unix_connection_nossl_serverhost(self):
coro = self.loop.create_unix_connection(
lambda: None, os.devnull, server_hostname='spam')
with self.assertRaisesRegex(ValueError,
'server_hostname is only meaningful'):
self.loop.run_until_complete(coro)
def test_create_unix_connection_ssl_noserverhost(self):
coro = self.loop.create_unix_connection(
lambda: None, os.devnull, ssl=True)
with self.assertRaisesRegex(
ValueError, 'you have to pass server_hostname when using ssl'):
self.loop.run_until_complete(coro)
def test_create_unix_connection_ssl_timeout_with_plain_sock(self):
coro = self.loop.create_unix_connection(lambda: None, path='spam',
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(os, 'sendfile'),
'sendfile is not supported')
class SelectorEventLoopUnixSockSendfileTests(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
self._ready = loop.create_future()
def connection_made(self, transport):
self.started = True
self.transport = transport
self._ready.set_result(None)
def data_received(self, data):
self.data.extend(data)
def connection_lost(self, exc):
self.closed = True
self.fut.set_result(None)
async def wait_closed(self):
await self.fut
@classmethod
def setUpClass(cls):
with open(support.TESTFN, 'wb') as fp:
fp.write(cls.DATA)
super().setUpClass()
@classmethod
def tearDownClass(cls):
support.unlink(support.TESTFN)
super().tearDownClass()
def setUp(self):
self.loop = asyncio.new_event_loop()
self.set_event_loop(self.loop)
self.file = open(support.TESTFN, 'rb')
self.addCleanup(self.file.close)
super().setUp()
def make_socket(self, cleanup=True):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setblocking(False)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 1024)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 1024)
if cleanup:
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)
port = support.find_unused_port()
srv_sock = self.make_socket(cleanup=False)
srv_sock.bind((support.HOST, port))
server = self.run_loop(self.loop.create_server(
lambda: proto, sock=srv_sock))
self.run_loop(self.loop.sock_connect(sock, (support.HOST, port)))
self.run_loop(proto._ready)
def cleanup():
proto.transport.close()
self.run_loop(proto.wait_closed())
server.close()
self.run_loop(server.wait_closed())
self.addCleanup(cleanup)
return sock, proto
def test_sock_sendfile_not_available(self):
sock, proto = self.prepare()
with mock.patch('asyncio.unix_events.os', spec=[]):
with self.assertRaisesRegex(events.SendfileNotAvailableError,
"os[.]sendfile[(][)] is not available"):
self.run_loop(self.loop._sock_sendfile_native(sock, self.file,
0, None))
self.assertEqual(self.file.tell(), 0)
def test_sock_sendfile_not_a_file(self):
sock, proto = self.prepare()
f = object()
with self.assertRaisesRegex(events.SendfileNotAvailableError,
"not a regular file"):
self.run_loop(self.loop._sock_sendfile_native(sock, f,
0, None))
self.assertEqual(self.file.tell(), 0)
def test_sock_sendfile_iobuffer(self):
sock, proto = self.prepare()
f = io.BytesIO()
with self.assertRaisesRegex(events.SendfileNotAvailableError,
"not a regular file"):
self.run_loop(self.loop._sock_sendfile_native(sock, f,
0, None))
self.assertEqual(self.file.tell(), 0)
def test_sock_sendfile_not_regular_file(self):
sock, proto = self.prepare()
f = mock.Mock()
f.fileno.return_value = -1
with self.assertRaisesRegex(events.SendfileNotAvailableError,
"not a regular file"):
self.run_loop(self.loop._sock_sendfile_native(sock, f,
0, None))
self.assertEqual(self.file.tell(), 0)
def test_sock_sendfile_cancel1(self):
sock, proto = self.prepare()
fut = self.loop.create_future()
fileno = self.file.fileno()
self.loop._sock_sendfile_native_impl(fut, None, sock, fileno,
0, None, len(self.DATA), 0)
fut.cancel()
with contextlib.suppress(asyncio.CancelledError):
self.run_loop(fut)
with self.assertRaises(KeyError):
self.loop._selector.get_key(sock)
def test_sock_sendfile_cancel2(self):
sock, proto = self.prepare()
fut = self.loop.create_future()
fileno = self.file.fileno()
self.loop._sock_sendfile_native_impl(fut, None, sock, fileno,
0, None, len(self.DATA), 0)
fut.cancel()
self.loop._sock_sendfile_native_impl(fut, sock.fileno(), sock, fileno,
0, None, len(self.DATA), 0)
with self.assertRaises(KeyError):
self.loop._selector.get_key(sock)
def test_sock_sendfile_blocking_error(self):
sock, proto = self.prepare()
fileno = self.file.fileno()
fut = mock.Mock()
fut.cancelled.return_value = False
with mock.patch('os.sendfile', side_effect=BlockingIOError()):
self.loop._sock_sendfile_native_impl(fut, None, sock, fileno,
0, None, len(self.DATA), 0)
key = self.loop._selector.get_key(sock)
self.assertIsNotNone(key)
fut.add_done_callback.assert_called_once_with(mock.ANY)
def test_sock_sendfile_os_error_first_call(self):
sock, proto = self.prepare()
fileno = self.file.fileno()
fut = self.loop.create_future()
with mock.patch('os.sendfile', side_effect=OSError()):
self.loop._sock_sendfile_native_impl(fut, None, sock, fileno,
0, None, len(self.DATA), 0)
with self.assertRaises(KeyError):
self.loop._selector.get_key(sock)
exc = fut.exception()
self.assertIsInstance(exc, events.SendfileNotAvailableError)
self.assertEqual(0, self.file.tell())
def test_sock_sendfile_os_error_next_call(self):
sock, proto = self.prepare()
fileno = self.file.fileno()
fut = self.loop.create_future()
err = OSError()
with mock.patch('os.sendfile', side_effect=err):
self.loop._sock_sendfile_native_impl(fut, sock.fileno(),
sock, fileno,
1000, None, len(self.DATA),
1000)
with self.assertRaises(KeyError):
self.loop._selector.get_key(sock)
exc = fut.exception()
self.assertIs(exc, err)
self.assertEqual(1000, self.file.tell())
def test_sock_sendfile_exception(self):
sock, proto = self.prepare()
fileno = self.file.fileno()
fut = self.loop.create_future()
err = events.SendfileNotAvailableError()
with mock.patch('os.sendfile', side_effect=err):
self.loop._sock_sendfile_native_impl(fut, sock.fileno(),
sock, fileno,
1000, None, len(self.DATA),
1000)
with self.assertRaises(KeyError):
self.loop._selector.get_key(sock)
exc = fut.exception()
self.assertIs(exc, err)
self.assertEqual(1000, self.file.tell())
class UnixReadPipeTransportTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.protocol = test_utils.make_test_protocol(asyncio.Protocol)
self.pipe = mock.Mock(spec_set=io.RawIOBase)
self.pipe.fileno.return_value = 5
blocking_patcher = mock.patch('os.set_blocking')
blocking_patcher.start()
self.addCleanup(blocking_patcher.stop)
fstat_patcher = mock.patch('os.fstat')
m_fstat = fstat_patcher.start()
st = mock.Mock()
st.st_mode = stat.S_IFIFO
m_fstat.return_value = st
self.addCleanup(fstat_patcher.stop)
def read_pipe_transport(self, waiter=None):
transport = unix_events._UnixReadPipeTransport(self.loop, self.pipe,
self.protocol,
waiter=waiter)
self.addCleanup(close_pipe_transport, transport)
return transport
def test_ctor(self):
waiter = asyncio.Future(loop=self.loop)
tr = self.read_pipe_transport(waiter=waiter)
self.loop.run_until_complete(waiter)
self.protocol.connection_made.assert_called_with(tr)
self.loop.assert_reader(5, tr._read_ready)
self.assertIsNone(waiter.result())
@mock.patch('os.read')
def test__read_ready(self, m_read):
tr = self.read_pipe_transport()
m_read.return_value = b'data'
tr._read_ready()
m_read.assert_called_with(5, tr.max_size)
self.protocol.data_received.assert_called_with(b'data')
@mock.patch('os.read')
def test__read_ready_eof(self, m_read):
tr = self.read_pipe_transport()
m_read.return_value = b''
tr._read_ready()
m_read.assert_called_with(5, tr.max_size)
self.assertFalse(self.loop.readers)
test_utils.run_briefly(self.loop)
self.protocol.eof_received.assert_called_with()
self.protocol.connection_lost.assert_called_with(None)
@mock.patch('os.read')
def test__read_ready_blocked(self, m_read):
tr = self.read_pipe_transport()
m_read.side_effect = BlockingIOError
tr._read_ready()
m_read.assert_called_with(5, tr.max_size)
test_utils.run_briefly(self.loop)
self.assertFalse(self.protocol.data_received.called)
@mock.patch('asyncio.log.logger.error')
@mock.patch('os.read')
def test__read_ready_error(self, m_read, m_logexc):
tr = self.read_pipe_transport()
err = OSError()
m_read.side_effect = err
tr._close = mock.Mock()
tr._read_ready()
m_read.assert_called_with(5, tr.max_size)
tr._close.assert_called_with(err)
m_logexc.assert_called_with(
test_utils.MockPattern(
'Fatal read error on pipe transport'
'\nprotocol:.*\ntransport:.*'),
exc_info=(OSError, MOCK_ANY, MOCK_ANY))
@mock.patch('os.read')
def test_pause_reading(self, m_read):
tr = self.read_pipe_transport()
m = mock.Mock()
self.loop.add_reader(5, m)
tr.pause_reading()
self.assertFalse(self.loop.readers)
@mock.patch('os.read')
def test_resume_reading(self, m_read):
tr = self.read_pipe_transport()
tr.resume_reading()
self.loop.assert_reader(5, tr._read_ready)
@mock.patch('os.read')
def test_close(self, m_read):
tr = self.read_pipe_transport()
tr._close = mock.Mock()
tr.close()
tr._close.assert_called_with(None)
@mock.patch('os.read')
def test_close_already_closing(self, m_read):
tr = self.read_pipe_transport()
tr._closing = True
tr._close = mock.Mock()
tr.close()
self.assertFalse(tr._close.called)
@mock.patch('os.read')
def test__close(self, m_read):
tr = self.read_pipe_transport()
err = object()
tr._close(err)
self.assertTrue(tr.is_closing())
self.assertFalse(self.loop.readers)
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(err)
def test__call_connection_lost(self):
tr = self.read_pipe_transport()
self.assertIsNotNone(tr._protocol)
self.assertIsNotNone(tr._loop)
err = None
tr._call_connection_lost(err)
self.protocol.connection_lost.assert_called_with(err)
self.pipe.close.assert_called_with()
self.assertIsNone(tr._protocol)
self.assertIsNone(tr._loop)
def test__call_connection_lost_with_err(self):
tr = self.read_pipe_transport()
self.assertIsNotNone(tr._protocol)
self.assertIsNotNone(tr._loop)
err = OSError()
tr._call_connection_lost(err)
self.protocol.connection_lost.assert_called_with(err)
self.pipe.close.assert_called_with()
self.assertIsNone(tr._protocol)
self.assertIsNone(tr._loop)
class UnixWritePipeTransportTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.protocol = test_utils.make_test_protocol(asyncio.BaseProtocol)
self.pipe = mock.Mock(spec_set=io.RawIOBase)
self.pipe.fileno.return_value = 5
blocking_patcher = mock.patch('os.set_blocking')
blocking_patcher.start()
self.addCleanup(blocking_patcher.stop)
fstat_patcher = mock.patch('os.fstat')
m_fstat = fstat_patcher.start()
st = mock.Mock()
st.st_mode = stat.S_IFSOCK
m_fstat.return_value = st
self.addCleanup(fstat_patcher.stop)
def write_pipe_transport(self, waiter=None):
transport = unix_events._UnixWritePipeTransport(self.loop, self.pipe,
self.protocol,
waiter=waiter)
self.addCleanup(close_pipe_transport, transport)
return transport
def test_ctor(self):
waiter = asyncio.Future(loop=self.loop)
tr = self.write_pipe_transport(waiter=waiter)
self.loop.run_until_complete(waiter)
self.protocol.connection_made.assert_called_with(tr)
self.loop.assert_reader(5, tr._read_ready)
self.assertEqual(None, waiter.result())
def test_can_write_eof(self):
tr = self.write_pipe_transport()
self.assertTrue(tr.can_write_eof())
@mock.patch('os.write')
def test_write(self, m_write):
tr = self.write_pipe_transport()
m_write.return_value = 4
tr.write(b'data')
m_write.assert_called_with(5, b'data')
self.assertFalse(self.loop.writers)
self.assertEqual(bytearray(), tr._buffer)
@mock.patch('os.write')
def test_write_no_data(self, m_write):
tr = self.write_pipe_transport()
tr.write(b'')
self.assertFalse(m_write.called)
self.assertFalse(self.loop.writers)
self.assertEqual(bytearray(b''), tr._buffer)
@mock.patch('os.write')
def test_write_partial(self, m_write):
tr = self.write_pipe_transport()
m_write.return_value = 2
tr.write(b'data')
self.loop.assert_writer(5, tr._write_ready)
self.assertEqual(bytearray(b'ta'), tr._buffer)
@mock.patch('os.write')
def test_write_buffer(self, m_write):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
tr._buffer = bytearray(b'previous')
tr.write(b'data')
self.assertFalse(m_write.called)
self.loop.assert_writer(5, tr._write_ready)
self.assertEqual(bytearray(b'previousdata'), tr._buffer)
@mock.patch('os.write')
def test_write_again(self, m_write):
tr = self.write_pipe_transport()
m_write.side_effect = BlockingIOError()
tr.write(b'data')
m_write.assert_called_with(5, bytearray(b'data'))
self.loop.assert_writer(5, tr._write_ready)
self.assertEqual(bytearray(b'data'), tr._buffer)
@mock.patch('asyncio.unix_events.logger')
@mock.patch('os.write')
def test_write_err(self, m_write, m_log):
tr = self.write_pipe_transport()
err = OSError()
m_write.side_effect = err
tr._fatal_error = mock.Mock()
tr.write(b'data')
m_write.assert_called_with(5, b'data')
self.assertFalse(self.loop.writers)
self.assertEqual(bytearray(), tr._buffer)
tr._fatal_error.assert_called_with(
err,
'Fatal write error on pipe transport')
self.assertEqual(1, tr._conn_lost)
tr.write(b'data')
self.assertEqual(2, tr._conn_lost)
tr.write(b'data')
tr.write(b'data')
tr.write(b'data')
tr.write(b'data')
# This is a bit overspecified. :-(
m_log.warning.assert_called_with(
'pipe closed by peer or os.write(pipe, data) raised exception.')
tr.close()
@mock.patch('os.write')
def test_write_close(self, m_write):
tr = self.write_pipe_transport()
tr._read_ready() # pipe was closed by peer
tr.write(b'data')
self.assertEqual(tr._conn_lost, 1)
tr.write(b'data')
self.assertEqual(tr._conn_lost, 2)
def test__read_ready(self):
tr = self.write_pipe_transport()
tr._read_ready()
self.assertFalse(self.loop.readers)
self.assertFalse(self.loop.writers)
self.assertTrue(tr.is_closing())
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(None)
@mock.patch('os.write')
def test__write_ready(self, m_write):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
tr._buffer = bytearray(b'data')
m_write.return_value = 4
tr._write_ready()
self.assertFalse(self.loop.writers)
self.assertEqual(bytearray(), tr._buffer)
@mock.patch('os.write')
def test__write_ready_partial(self, m_write):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
tr._buffer = bytearray(b'data')
m_write.return_value = 3
tr._write_ready()
self.loop.assert_writer(5, tr._write_ready)
self.assertEqual(bytearray(b'a'), tr._buffer)
@mock.patch('os.write')
def test__write_ready_again(self, m_write):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
tr._buffer = bytearray(b'data')
m_write.side_effect = BlockingIOError()
tr._write_ready()
m_write.assert_called_with(5, bytearray(b'data'))
self.loop.assert_writer(5, tr._write_ready)
self.assertEqual(bytearray(b'data'), tr._buffer)
@mock.patch('os.write')
def test__write_ready_empty(self, m_write):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
tr._buffer = bytearray(b'data')
m_write.return_value = 0
tr._write_ready()
m_write.assert_called_with(5, bytearray(b'data'))
self.loop.assert_writer(5, tr._write_ready)
self.assertEqual(bytearray(b'data'), tr._buffer)
@mock.patch('asyncio.log.logger.error')
@mock.patch('os.write')
def test__write_ready_err(self, m_write, m_logexc):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
tr._buffer = bytearray(b'data')
m_write.side_effect = err = OSError()
tr._write_ready()
self.assertFalse(self.loop.writers)
self.assertFalse(self.loop.readers)
self.assertEqual(bytearray(), tr._buffer)
self.assertTrue(tr.is_closing())
m_logexc.assert_not_called()
self.assertEqual(1, tr._conn_lost)
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(err)
@mock.patch('os.write')
def test__write_ready_closing(self, m_write):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
tr._closing = True
tr._buffer = bytearray(b'data')
m_write.return_value = 4
tr._write_ready()
self.assertFalse(self.loop.writers)
self.assertFalse(self.loop.readers)
self.assertEqual(bytearray(), tr._buffer)
self.protocol.connection_lost.assert_called_with(None)
self.pipe.close.assert_called_with()
@mock.patch('os.write')
def test_abort(self, m_write):
tr = self.write_pipe_transport()
self.loop.add_writer(5, tr._write_ready)
self.loop.add_reader(5, tr._read_ready)
tr._buffer = [b'da', b'ta']
tr.abort()
self.assertFalse(m_write.called)
self.assertFalse(self.loop.readers)
self.assertFalse(self.loop.writers)
self.assertEqual([], tr._buffer)
self.assertTrue(tr.is_closing())
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(None)
def test__call_connection_lost(self):
tr = self.write_pipe_transport()
self.assertIsNotNone(tr._protocol)
self.assertIsNotNone(tr._loop)
err = None
tr._call_connection_lost(err)
self.protocol.connection_lost.assert_called_with(err)
self.pipe.close.assert_called_with()
self.assertIsNone(tr._protocol)
self.assertIsNone(tr._loop)
def test__call_connection_lost_with_err(self):
tr = self.write_pipe_transport()
self.assertIsNotNone(tr._protocol)
self.assertIsNotNone(tr._loop)
err = OSError()
tr._call_connection_lost(err)
self.protocol.connection_lost.assert_called_with(err)
self.pipe.close.assert_called_with()
self.assertIsNone(tr._protocol)
self.assertIsNone(tr._loop)
def test_close(self):
tr = self.write_pipe_transport()
tr.write_eof = mock.Mock()
tr.close()
tr.write_eof.assert_called_with()
# closing the transport twice must not fail
tr.close()
def test_close_closing(self):
tr = self.write_pipe_transport()
tr.write_eof = mock.Mock()
tr._closing = True
tr.close()
self.assertFalse(tr.write_eof.called)
def test_write_eof(self):
tr = self.write_pipe_transport()
tr.write_eof()
self.assertTrue(tr.is_closing())
self.assertFalse(self.loop.readers)
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(None)
def test_write_eof_pending(self):
tr = self.write_pipe_transport()
tr._buffer = [b'data']
tr.write_eof()
self.assertTrue(tr.is_closing())
self.assertFalse(self.protocol.connection_lost.called)
class AbstractChildWatcherTests(unittest.TestCase):
def test_not_implemented(self):
f = mock.Mock()
watcher = asyncio.AbstractChildWatcher()
self.assertRaises(
NotImplementedError, watcher.add_child_handler, f, f)
self.assertRaises(
NotImplementedError, watcher.remove_child_handler, f)
self.assertRaises(
NotImplementedError, watcher.attach_loop, f)
self.assertRaises(
NotImplementedError, watcher.close)
self.assertRaises(
NotImplementedError, watcher.__enter__)
self.assertRaises(
NotImplementedError, watcher.__exit__, f, f, f)
class BaseChildWatcherTests(unittest.TestCase):
def test_not_implemented(self):
f = mock.Mock()
watcher = unix_events.BaseChildWatcher()
self.assertRaises(
NotImplementedError, watcher._do_waitpid, f)
WaitPidMocks = collections.namedtuple("WaitPidMocks",
("waitpid",
"WIFEXITED",
"WIFSIGNALED",
"WEXITSTATUS",
"WTERMSIG",
))
class ChildWatcherTestsMixin:
ignore_warnings = mock.patch.object(log.logger, "warning")
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.running = False
self.zombies = {}
with mock.patch.object(
self.loop, "add_signal_handler") as self.m_add_signal_handler:
self.watcher = self.create_watcher()
self.watcher.attach_loop(self.loop)
def waitpid(self, pid, flags):
if isinstance(self.watcher, asyncio.SafeChildWatcher) or pid != -1:
self.assertGreater(pid, 0)
try:
if pid < 0:
return self.zombies.popitem()
else:
return pid, self.zombies.pop(pid)
except KeyError:
pass
if self.running:
return 0, 0
else:
raise ChildProcessError()
def add_zombie(self, pid, returncode):
self.zombies[pid] = returncode + 32768
def WIFEXITED(self, status):
return status >= 32768
def WIFSIGNALED(self, status):
return 32700 < status < 32768
def WEXITSTATUS(self, status):
self.assertTrue(self.WIFEXITED(status))
return status - 32768
def WTERMSIG(self, status):
self.assertTrue(self.WIFSIGNALED(status))
return 32768 - status
def test_create_watcher(self):
self.m_add_signal_handler.assert_called_once_with(
signal.SIGCHLD, self.watcher._sig_chld)
def waitpid_mocks(func):
def wrapped_func(self):
def patch(target, wrapper):
return mock.patch(target, wraps=wrapper,
new_callable=mock.Mock)
with patch('os.WTERMSIG', self.WTERMSIG) as m_WTERMSIG, \
patch('os.WEXITSTATUS', self.WEXITSTATUS) as m_WEXITSTATUS, \
patch('os.WIFSIGNALED', self.WIFSIGNALED) as m_WIFSIGNALED, \
patch('os.WIFEXITED', self.WIFEXITED) as m_WIFEXITED, \
patch('os.waitpid', self.waitpid) as m_waitpid:
func(self, WaitPidMocks(m_waitpid,
m_WIFEXITED, m_WIFSIGNALED,
m_WEXITSTATUS, m_WTERMSIG,
))
return wrapped_func
@waitpid_mocks
def test_sigchld(self, m):
# register a child
callback = mock.Mock()
with self.watcher:
self.running = True
self.watcher.add_child_handler(42, callback, 9, 10, 14)
self.assertFalse(callback.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child is running
self.watcher._sig_chld()
self.assertFalse(callback.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child terminates (returncode 12)
self.running = False
self.add_zombie(42, 12)
self.watcher._sig_chld()
self.assertTrue(m.WIFEXITED.called)
self.assertTrue(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
callback.assert_called_once_with(42, 12, 9, 10, 14)
m.WIFSIGNALED.reset_mock()
m.WIFEXITED.reset_mock()
m.WEXITSTATUS.reset_mock()
callback.reset_mock()
# ensure that the child is effectively reaped
self.add_zombie(42, 13)
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback.called)
self.assertFalse(m.WTERMSIG.called)
m.WIFSIGNALED.reset_mock()
m.WIFEXITED.reset_mock()
m.WEXITSTATUS.reset_mock()
# sigchld called again
self.zombies.clear()
self.watcher._sig_chld()
self.assertFalse(callback.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
@waitpid_mocks
def test_sigchld_two_children(self, m):
callback1 = mock.Mock()
callback2 = mock.Mock()
# register child 1
with self.watcher:
self.running = True
self.watcher.add_child_handler(43, callback1, 7, 8)
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# register child 2
with self.watcher:
self.watcher.add_child_handler(44, callback2, 147, 18)
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# children are running
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child 1 terminates (signal 3)
self.add_zombie(43, -3)
self.watcher._sig_chld()
callback1.assert_called_once_with(43, -3, 7, 8)
self.assertFalse(callback2.called)
self.assertTrue(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertTrue(m.WTERMSIG.called)
m.WIFSIGNALED.reset_mock()
m.WIFEXITED.reset_mock()
m.WTERMSIG.reset_mock()
callback1.reset_mock()
# child 2 still running
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child 2 terminates (code 108)
self.add_zombie(44, 108)
self.running = False
self.watcher._sig_chld()
callback2.assert_called_once_with(44, 108, 147, 18)
self.assertFalse(callback1.called)
self.assertTrue(m.WIFEXITED.called)
self.assertTrue(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
m.WIFSIGNALED.reset_mock()
m.WIFEXITED.reset_mock()
m.WEXITSTATUS.reset_mock()
callback2.reset_mock()
# ensure that the children are effectively reaped
self.add_zombie(43, 14)
self.add_zombie(44, 15)
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WTERMSIG.called)
m.WIFSIGNALED.reset_mock()
m.WIFEXITED.reset_mock()
m.WEXITSTATUS.reset_mock()
# sigchld called again
self.zombies.clear()
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
@waitpid_mocks
def test_sigchld_two_children_terminating_together(self, m):
callback1 = mock.Mock()
callback2 = mock.Mock()
# register child 1
with self.watcher:
self.running = True
self.watcher.add_child_handler(45, callback1, 17, 8)
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# register child 2
with self.watcher:
self.watcher.add_child_handler(46, callback2, 1147, 18)
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# children are running
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child 1 terminates (code 78)
# child 2 terminates (signal 5)
self.add_zombie(45, 78)
self.add_zombie(46, -5)
self.running = False
self.watcher._sig_chld()
callback1.assert_called_once_with(45, 78, 17, 8)
callback2.assert_called_once_with(46, -5, 1147, 18)
self.assertTrue(m.WIFSIGNALED.called)
self.assertTrue(m.WIFEXITED.called)
self.assertTrue(m.WEXITSTATUS.called)
self.assertTrue(m.WTERMSIG.called)
m.WIFSIGNALED.reset_mock()
m.WIFEXITED.reset_mock()
m.WTERMSIG.reset_mock()
m.WEXITSTATUS.reset_mock()
callback1.reset_mock()
callback2.reset_mock()
# ensure that the children are effectively reaped
self.add_zombie(45, 14)
self.add_zombie(46, 15)
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WTERMSIG.called)
@waitpid_mocks
def test_sigchld_race_condition(self, m):
# register a child
callback = mock.Mock()
with self.watcher:
# child terminates before being registered
self.add_zombie(50, 4)
self.watcher._sig_chld()
self.watcher.add_child_handler(50, callback, 1, 12)
callback.assert_called_once_with(50, 4, 1, 12)
callback.reset_mock()
# ensure that the child is effectively reaped
self.add_zombie(50, -1)
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback.called)
@waitpid_mocks
def test_sigchld_replace_handler(self, m):
callback1 = mock.Mock()
callback2 = mock.Mock()
# register a child
with self.watcher:
self.running = True
self.watcher.add_child_handler(51, callback1, 19)
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# register the same child again
with self.watcher:
self.watcher.add_child_handler(51, callback2, 21)
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child terminates (signal 8)
self.running = False
self.add_zombie(51, -8)
self.watcher._sig_chld()
callback2.assert_called_once_with(51, -8, 21)
self.assertFalse(callback1.called)
self.assertTrue(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertTrue(m.WTERMSIG.called)
m.WIFSIGNALED.reset_mock()
m.WIFEXITED.reset_mock()
m.WTERMSIG.reset_mock()
callback2.reset_mock()
# ensure that the child is effectively reaped
self.add_zombie(51, 13)
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(m.WTERMSIG.called)
@waitpid_mocks
def test_sigchld_remove_handler(self, m):
callback = mock.Mock()
# register a child
with self.watcher:
self.running = True
self.watcher.add_child_handler(52, callback, 1984)
self.assertFalse(callback.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# unregister the child
self.watcher.remove_child_handler(52)
self.assertFalse(callback.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child terminates (code 99)
self.running = False
self.add_zombie(52, 99)
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback.called)
@waitpid_mocks
def test_sigchld_unknown_status(self, m):
callback = mock.Mock()
# register a child
with self.watcher:
self.running = True
self.watcher.add_child_handler(53, callback, -19)
self.assertFalse(callback.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# terminate with unknown status
self.zombies[53] = 1178
self.running = False
self.watcher._sig_chld()
callback.assert_called_once_with(53, 1178, -19)
self.assertTrue(m.WIFEXITED.called)
self.assertTrue(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
callback.reset_mock()
m.WIFEXITED.reset_mock()
m.WIFSIGNALED.reset_mock()
# ensure that the child is effectively reaped
self.add_zombie(53, 101)
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback.called)
@waitpid_mocks
def test_remove_child_handler(self, m):
callback1 = mock.Mock()
callback2 = mock.Mock()
callback3 = mock.Mock()
# register children
with self.watcher:
self.running = True
self.watcher.add_child_handler(54, callback1, 1)
self.watcher.add_child_handler(55, callback2, 2)
self.watcher.add_child_handler(56, callback3, 3)
# remove child handler 1
self.assertTrue(self.watcher.remove_child_handler(54))
# remove child handler 2 multiple times
self.assertTrue(self.watcher.remove_child_handler(55))
self.assertFalse(self.watcher.remove_child_handler(55))
self.assertFalse(self.watcher.remove_child_handler(55))
# all children terminate
self.add_zombie(54, 0)
self.add_zombie(55, 1)
self.add_zombie(56, 2)
self.running = False
with self.ignore_warnings:
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
callback3.assert_called_once_with(56, 2, 3)
@waitpid_mocks
def test_sigchld_unhandled_exception(self, m):
callback = mock.Mock()
# register a child
with self.watcher:
self.running = True
self.watcher.add_child_handler(57, callback)
# raise an exception
m.waitpid.side_effect = ValueError
with mock.patch.object(log.logger,
'error') as m_error:
self.assertEqual(self.watcher._sig_chld(), None)
self.assertTrue(m_error.called)
@waitpid_mocks
def test_sigchld_child_reaped_elsewhere(self, m):
# register a child
callback = mock.Mock()
with self.watcher:
self.running = True
self.watcher.add_child_handler(58, callback)
self.assertFalse(callback.called)
self.assertFalse(m.WIFEXITED.called)
self.assertFalse(m.WIFSIGNALED.called)
self.assertFalse(m.WEXITSTATUS.called)
self.assertFalse(m.WTERMSIG.called)
# child terminates
self.running = False
self.add_zombie(58, 4)
# waitpid is called elsewhere
os.waitpid(58, os.WNOHANG)
m.waitpid.reset_mock()
# sigchld
with self.ignore_warnings:
self.watcher._sig_chld()
if isinstance(self.watcher, asyncio.FastChildWatcher):
# here the FastChildWatche enters a deadlock
# (there is no way to prevent it)
self.assertFalse(callback.called)
else:
callback.assert_called_once_with(58, 255)
@waitpid_mocks
def test_sigchld_unknown_pid_during_registration(self, m):
# register two children
callback1 = mock.Mock()
callback2 = mock.Mock()
with self.ignore_warnings, self.watcher:
self.running = True
# child 1 terminates
self.add_zombie(591, 7)
# an unknown child terminates
self.add_zombie(593, 17)
self.watcher._sig_chld()
self.watcher.add_child_handler(591, callback1)
self.watcher.add_child_handler(592, callback2)
callback1.assert_called_once_with(591, 7)
self.assertFalse(callback2.called)
@waitpid_mocks
def test_set_loop(self, m):
# register a child
callback = mock.Mock()
with self.watcher:
self.running = True
self.watcher.add_child_handler(60, callback)
# attach a new loop
old_loop = self.loop
self.loop = self.new_test_loop()
patch = mock.patch.object
with patch(old_loop, "remove_signal_handler") as m_old_remove, \
patch(self.loop, "add_signal_handler") as m_new_add:
self.watcher.attach_loop(self.loop)
m_old_remove.assert_called_once_with(
signal.SIGCHLD)
m_new_add.assert_called_once_with(
signal.SIGCHLD, self.watcher._sig_chld)
# child terminates
self.running = False
self.add_zombie(60, 9)
self.watcher._sig_chld()
callback.assert_called_once_with(60, 9)
@waitpid_mocks
def test_set_loop_race_condition(self, m):
# register 3 children
callback1 = mock.Mock()
callback2 = mock.Mock()
callback3 = mock.Mock()
with self.watcher:
self.running = True
self.watcher.add_child_handler(61, callback1)
self.watcher.add_child_handler(62, callback2)
self.watcher.add_child_handler(622, callback3)
# detach the loop
old_loop = self.loop
self.loop = None
with mock.patch.object(
old_loop, "remove_signal_handler") as m_remove_signal_handler:
with self.assertWarnsRegex(
RuntimeWarning, 'A loop is being detached'):
self.watcher.attach_loop(None)
m_remove_signal_handler.assert_called_once_with(
signal.SIGCHLD)
# child 1 & 2 terminate
self.add_zombie(61, 11)
self.add_zombie(62, -5)
# SIGCHLD was not caught
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
self.assertFalse(callback3.called)
# attach a new loop
self.loop = self.new_test_loop()
with mock.patch.object(
self.loop, "add_signal_handler") as m_add_signal_handler:
self.watcher.attach_loop(self.loop)
m_add_signal_handler.assert_called_once_with(
signal.SIGCHLD, self.watcher._sig_chld)
callback1.assert_called_once_with(61, 11) # race condition!
callback2.assert_called_once_with(62, -5) # race condition!
self.assertFalse(callback3.called)
callback1.reset_mock()
callback2.reset_mock()
# child 3 terminates
self.running = False
self.add_zombie(622, 19)
self.watcher._sig_chld()
self.assertFalse(callback1.called)
self.assertFalse(callback2.called)
callback3.assert_called_once_with(622, 19)
@waitpid_mocks
def test_close(self, m):
# register two children
callback1 = mock.Mock()
with self.watcher:
self.running = True
# child 1 terminates
self.add_zombie(63, 9)
# other child terminates
self.add_zombie(65, 18)
self.watcher._sig_chld()
self.watcher.add_child_handler(63, callback1)
self.watcher.add_child_handler(64, callback1)
self.assertEqual(len(self.watcher._callbacks), 1)
if isinstance(self.watcher, asyncio.FastChildWatcher):
self.assertEqual(len(self.watcher._zombies), 1)
with mock.patch.object(
self.loop,
"remove_signal_handler") as m_remove_signal_handler:
self.watcher.close()
m_remove_signal_handler.assert_called_once_with(
signal.SIGCHLD)
self.assertFalse(self.watcher._callbacks)
if isinstance(self.watcher, asyncio.FastChildWatcher):
self.assertFalse(self.watcher._zombies)
@waitpid_mocks
def test_add_child_handler_with_no_loop_attached(self, m):
callback = mock.Mock()
with self.create_watcher() as watcher:
with self.assertRaisesRegex(
RuntimeError,
'the child watcher does not have a loop attached'):
watcher.add_child_handler(100, callback)
class SafeChildWatcherTests (ChildWatcherTestsMixin, test_utils.TestCase):
def create_watcher(self):
return asyncio.SafeChildWatcher()
class FastChildWatcherTests (ChildWatcherTestsMixin, test_utils.TestCase):
def create_watcher(self):
return asyncio.FastChildWatcher()
class PolicyTests(unittest.TestCase):
def create_policy(self):
return asyncio.DefaultEventLoopPolicy()
def test_get_child_watcher(self):
policy = self.create_policy()
self.assertIsNone(policy._watcher)
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.SafeChildWatcher)
self.assertIs(policy._watcher, watcher)
self.assertIs(watcher, policy.get_child_watcher())
self.assertIsNone(watcher._loop)
def test_get_child_watcher_after_set(self):
policy = self.create_policy()
watcher = asyncio.FastChildWatcher()
policy.set_child_watcher(watcher)
self.assertIs(policy._watcher, watcher)
self.assertIs(watcher, policy.get_child_watcher())
def test_get_child_watcher_with_mainloop_existing(self):
policy = self.create_policy()
loop = policy.get_event_loop()
self.assertIsNone(policy._watcher)
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.SafeChildWatcher)
self.assertIs(watcher._loop, loop)
loop.close()
def test_get_child_watcher_thread(self):
def f():
policy.set_event_loop(policy.new_event_loop())
self.assertIsInstance(policy.get_event_loop(),
asyncio.AbstractEventLoop)
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.SafeChildWatcher)
self.assertIsNone(watcher._loop)
policy.get_event_loop().close()
policy = self.create_policy()
th = threading.Thread(target=f)
th.start()
th.join()
def test_child_watcher_replace_mainloop_existing(self):
policy = self.create_policy()
loop = policy.get_event_loop()
watcher = policy.get_child_watcher()
self.assertIs(watcher._loop, loop)
new_loop = policy.new_event_loop()
policy.set_event_loop(new_loop)
self.assertIs(watcher._loop, new_loop)
policy.set_event_loop(None)
self.assertIs(watcher._loop, None)
loop.close()
new_loop.close()
class TestFunctional(unittest.TestCase):
def setUp(self):
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(self.loop)
def tearDown(self):
self.loop.close()
asyncio.set_event_loop(None)
def test_add_reader_invalid_argument(self):
def assert_raises():
return self.assertRaisesRegex(ValueError, r'Invalid file object')
cb = lambda: None
with assert_raises():
self.loop.add_reader(object(), cb)
with assert_raises():
self.loop.add_writer(object(), cb)
with assert_raises():
self.loop.remove_reader(object())
with assert_raises():
self.loop.remove_writer(object())
def test_add_reader_or_writer_transport_fd(self):
def assert_raises():
return self.assertRaisesRegex(
RuntimeError,
r'File descriptor .* is used by transport')
async def runner():
tr, pr = await self.loop.create_connection(
lambda: asyncio.Protocol(), sock=rsock)
try:
cb = lambda: None
with assert_raises():
self.loop.add_reader(rsock, cb)
with assert_raises():
self.loop.add_reader(rsock.fileno(), cb)
with assert_raises():
self.loop.remove_reader(rsock)
with assert_raises():
self.loop.remove_reader(rsock.fileno())
with assert_raises():
self.loop.add_writer(rsock, cb)
with assert_raises():
self.loop.add_writer(rsock.fileno(), cb)
with assert_raises():
self.loop.remove_writer(rsock)
with assert_raises():
self.loop.remove_writer(rsock.fileno())
finally:
tr.close()
rsock, wsock = socket.socketpair()
try:
self.loop.run_until_complete(runner())
finally:
rsock.close()
wsock.close()
if __name__ == '__main__':
unittest.main()
