"""Tests for selector_events.py"""
import collections
import selectors
import socket
import sys
import unittest
from asyncio import selector_events
from unittest import mock
try:
import ssl
except ImportError:
ssl = None
import asyncio
from asyncio.selector_events import (BaseSelectorEventLoop,
_SelectorDatagramTransport,
_SelectorSocketTransport,
_SelectorTransport)
from test.test_asyncio import utils as test_utils
MOCK_ANY = mock.ANY
def tearDownModule():
asyncio.set_event_loop_policy(None)
class TestBaseSelectorEventLoop(BaseSelectorEventLoop):
def _make_self_pipe(self):
self._ssock = mock.Mock()
self._csock = mock.Mock()
self._internal_fds += 1
def _close_self_pipe(self):
pass
def list_to_buffer(l=()):
buffer = collections.deque()
buffer.extend((memoryview(i) for i in l))
return buffer
def close_transport(transport):
# Don't call transport.close() because the event loop and the selector
# are mocked
if transport._sock is None:
return
transport._sock.close()
transport._sock = None
class BaseSelectorEventLoopTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.selector = mock.Mock()
self.selector.select.return_value = []
self.loop = TestBaseSelectorEventLoop(self.selector)
self.set_event_loop(self.loop)
def test_make_socket_transport(self):
m = mock.Mock()
self.loop.add_reader = mock.Mock()
self.loop._ensure_fd_no_transport = mock.Mock()
transport = self.loop._make_socket_transport(m, asyncio.Protocol())
self.assertIsInstance(transport, _SelectorSocketTransport)
self.assertEqual(self.loop._ensure_fd_no_transport.call_count, 1)
# Calling repr() must not fail when the event loop is closed
self.loop.close()
repr(transport)
close_transport(transport)
@mock.patch('asyncio.selector_events.ssl', None)
@mock.patch('asyncio.sslproto.ssl', None)
def test_make_ssl_transport_without_ssl_error(self):
m = mock.Mock()
self.loop.add_reader = mock.Mock()
self.loop.add_writer = mock.Mock()
self.loop.remove_reader = mock.Mock()
self.loop.remove_writer = mock.Mock()
self.loop._ensure_fd_no_transport = mock.Mock()
with self.assertRaises(RuntimeError):
self.loop._make_ssl_transport(m, m, m, m)
self.assertEqual(self.loop._ensure_fd_no_transport.call_count, 1)
def test_close(self):
class EventLoop(BaseSelectorEventLoop):
def _make_self_pipe(self):
self._ssock = mock.Mock()
self._csock = mock.Mock()
self._internal_fds += 1
self.loop = EventLoop(self.selector)
self.set_event_loop(self.loop)
ssock = self.loop._ssock
ssock.fileno.return_value = 7
csock = self.loop._csock
csock.fileno.return_value = 1
remove_reader = self.loop._remove_reader = mock.Mock()
self.loop._selector.close()
self.loop._selector = selector = mock.Mock()
self.assertFalse(self.loop.is_closed())
self.loop.close()
self.assertTrue(self.loop.is_closed())
self.assertIsNone(self.loop._selector)
self.assertIsNone(self.loop._csock)
self.assertIsNone(self.loop._ssock)
selector.close.assert_called_with()
ssock.close.assert_called_with()
csock.close.assert_called_with()
remove_reader.assert_called_with(7)
# 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)
fd = 0
def callback():
pass
self.assertRaises(RuntimeError, self.loop.add_reader, fd, callback)
self.assertRaises(RuntimeError, self.loop.add_writer, fd, callback)
def test_close_no_selector(self):
self.loop.remove_reader = mock.Mock()
self.loop._selector.close()
self.loop._selector = None
self.loop.close()
self.assertIsNone(self.loop._selector)
def test_read_from_self_tryagain(self):
self.loop._ssock.recv.side_effect = BlockingIOError
self.assertIsNone(self.loop._read_from_self())
def test_read_from_self_exception(self):
self.loop._ssock.recv.side_effect = OSError
self.assertRaises(OSError, self.loop._read_from_self)
def test_write_to_self_tryagain(self):
self.loop._csock.send.side_effect = BlockingIOError
with test_utils.disable_logger():
self.assertIsNone(self.loop._write_to_self())
def test_write_to_self_exception(self):
# _write_to_self() swallows OSError
self.loop._csock.send.side_effect = RuntimeError()
self.assertRaises(RuntimeError, self.loop._write_to_self)
@mock.patch('socket.getaddrinfo')
def test_sock_connect_resolve_using_socket_params(self, m_gai):
addr = ('need-resolution.com', 8080)
for sock_type in [socket.SOCK_STREAM, socket.SOCK_DGRAM]:
with self.subTest(sock_type):
sock = test_utils.mock_nonblocking_socket(type=sock_type)
m_gai.side_effect = \
lambda *args: [(None, None, None, None, ('127.0.0.1', 0))]
con = self.loop.create_task(self.loop.sock_connect(sock, addr))
self.loop.run_until_complete(con)
m_gai.assert_called_with(
addr[0], addr[1], sock.family, sock.type, sock.proto, 0)
self.loop.run_until_complete(con)
sock.connect.assert_called_with(('127.0.0.1', 0))
def test_add_reader(self):
self.loop._selector.get_map.return_value = {}
cb = lambda: True
self.loop.add_reader(1, cb)
self.assertTrue(self.loop._selector.register.called)
fd, mask, (r, w) = self.loop._selector.register.call_args[0]
self.assertEqual(1, fd)
self.assertEqual(selectors.EVENT_READ, mask)
self.assertEqual(cb, r._callback)
self.assertIsNone(w)
def test_add_reader_existing(self):
reader = mock.Mock()
writer = mock.Mock()
self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
1, 1, selectors.EVENT_WRITE, (reader, writer))}
cb = lambda: True
self.loop.add_reader(1, cb)
self.assertTrue(reader.cancel.called)
self.assertFalse(self.loop._selector.register.called)
self.assertTrue(self.loop._selector.modify.called)
fd, mask, (r, w) = self.loop._selector.modify.call_args[0]
self.assertEqual(1, fd)
self.assertEqual(selectors.EVENT_WRITE | selectors.EVENT_READ, mask)
self.assertEqual(cb, r._callback)
self.assertEqual(writer, w)
def test_add_reader_existing_writer(self):
writer = mock.Mock()
self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
1, 1, selectors.EVENT_WRITE, (None, writer))}
cb = lambda: True
self.loop.add_reader(1, cb)
self.assertFalse(self.loop._selector.register.called)
self.assertTrue(self.loop._selector.modify.called)
fd, mask, (r, w) = self.loop._selector.modify.call_args[0]
self.assertEqual(1, fd)
self.assertEqual(selectors.EVENT_WRITE | selectors.EVENT_READ, mask)
self.assertEqual(cb, r._callback)
self.assertEqual(writer, w)
def test_remove_reader(self):
self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
1, 1, selectors.EVENT_READ, (None, None))}
self.assertFalse(self.loop.remove_reader(1))
self.assertTrue(self.loop._selector.unregister.called)
def test_remove_reader_read_write(self):
reader = mock.Mock()
writer = mock.Mock()
self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
1, 1, selectors.EVENT_READ | selectors.EVENT_WRITE,
(reader, writer))}
self.assertTrue(
self.loop.remove_reader(1))
self.assertFalse(self.loop._selector.unregister.called)
self.assertEqual(
(1, selectors.EVENT_WRITE, (None, writer)),
self.loop._selector.modify.call_args[0])
def test_remove_reader_unknown(self):
self.loop._selector.get_map.return_value = {}
self.assertFalse(
self.loop.remove_reader(1))
def test_add_writer(self):
self.loop._selector.get_map.return_value = {}
cb = lambda: True
self.loop.add_writer(1, cb)
self.assertTrue(self.loop._selector.register.called)
fd, mask, (r, w) = self.loop._selector.register.call_args[0]
self.assertEqual(1, fd)
self.assertEqual(selectors.EVENT_WRITE, mask)
self.assertIsNone(r)
self.assertEqual(cb, w._callback)
def test_add_writer_existing(self):
reader = mock.Mock()
writer = mock.Mock()
self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
1, 1, selectors.EVENT_READ, (reader, writer))}
cb = lambda: True
self.loop.add_writer(1, cb)
self.assertTrue(writer.cancel.called)
self.assertFalse(self.loop._selector.register.called)
self.assertTrue(self.loop._selector.modify.called)
fd, mask, (r, w) = self.loop._selector.modify.call_args[0]
self.assertEqual(1, fd)
self.assertEqual(selectors.EVENT_WRITE | selectors.EVENT_READ, mask)
self.assertEqual(reader, r)
self.assertEqual(cb, w._callback)
def test_remove_writer(self):
self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
1, 1, selectors.EVENT_WRITE, (None, None))}
self.assertFalse(self.loop.remove_writer(1))
self.assertTrue(self.loop._selector.unregister.called)
def test_remove_writer_read_write(self):
reader = mock.Mock()
writer = mock.Mock()
self.loop._selector.get_map.return_value = {1: selectors.SelectorKey(
1, 1, selectors.EVENT_READ | selectors.EVENT_WRITE,
(reader, writer))}
self.assertTrue(
self.loop.remove_writer(1))
self.assertFalse(self.loop._selector.unregister.called)
self.assertEqual(
(1, selectors.EVENT_READ, (reader, None)),
self.loop._selector.modify.call_args[0])
def test_remove_writer_unknown(self):
self.loop._selector.get_map.return_value = {}
self.assertFalse(
self.loop.remove_writer(1))
def test_process_events_read(self):
reader = mock.Mock()
reader._cancelled = False
self.loop._add_callback = mock.Mock()
self.loop._process_events(
[(selectors.SelectorKey(
1, 1, selectors.EVENT_READ, (reader, None)),
selectors.EVENT_READ)])
self.assertTrue(self.loop._add_callback.called)
self.loop._add_callback.assert_called_with(reader)
def test_process_events_read_cancelled(self):
reader = mock.Mock()
reader.cancelled = True
self.loop._remove_reader = mock.Mock()
self.loop._process_events(
[(selectors.SelectorKey(
1, 1, selectors.EVENT_READ, (reader, None)),
selectors.EVENT_READ)])
self.loop._remove_reader.assert_called_with(1)
def test_process_events_write(self):
writer = mock.Mock()
writer._cancelled = False
self.loop._add_callback = mock.Mock()
self.loop._process_events(
[(selectors.SelectorKey(1, 1, selectors.EVENT_WRITE,
(None, writer)),
selectors.EVENT_WRITE)])
self.loop._add_callback.assert_called_with(writer)
def test_process_events_write_cancelled(self):
writer = mock.Mock()
writer.cancelled = True
self.loop._remove_writer = mock.Mock()
self.loop._process_events(
[(selectors.SelectorKey(1, 1, selectors.EVENT_WRITE,
(None, writer)),
selectors.EVENT_WRITE)])
self.loop._remove_writer.assert_called_with(1)
def test_accept_connection_multiple(self):
sock = mock.Mock()
sock.accept.return_value = (mock.Mock(), mock.Mock())
backlog = 100
# Mock the coroutine generation for a connection to prevent
# warnings related to un-awaited coroutines. _accept_connection2
# is an async function that is patched with AsyncMock. create_task
# creates a task out of coroutine returned by AsyncMock, so use
# asyncio.sleep(0) to ensure created tasks are complete to avoid
# task pending warnings.
mock_obj = mock.patch.object
with mock_obj(self.loop, '_accept_connection2') as accept2_mock:
self.loop._accept_connection(
mock.Mock(), sock, backlog=backlog)
self.loop.run_until_complete(asyncio.sleep(0))
self.assertEqual(sock.accept.call_count, backlog)
class SelectorTransportTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.protocol = test_utils.make_test_protocol(asyncio.Protocol)
self.sock = mock.Mock(socket.socket)
self.sock.fileno.return_value = 7
def create_transport(self):
transport = _SelectorTransport(self.loop, self.sock, self.protocol,
None)
self.addCleanup(close_transport, transport)
return transport
def test_ctor(self):
tr = self.create_transport()
self.assertIs(tr._loop, self.loop)
self.assertIs(tr._sock, self.sock)
self.assertIs(tr._sock_fd, 7)
def test_abort(self):
tr = self.create_transport()
tr._force_close = mock.Mock()
tr.abort()
tr._force_close.assert_called_with(None)
def test_close(self):
tr = self.create_transport()
tr.close()
self.assertTrue(tr.is_closing())
self.assertEqual(1, self.loop.remove_reader_count[7])
self.protocol.connection_lost(None)
self.assertEqual(tr._conn_lost, 1)
tr.close()
self.assertEqual(tr._conn_lost, 1)
self.assertEqual(1, self.loop.remove_reader_count[7])
def test_close_write_buffer(self):
tr = self.create_transport()
tr._buffer.extend(b'data')
tr.close()
self.assertFalse(self.loop.readers)
test_utils.run_briefly(self.loop)
self.assertFalse(self.protocol.connection_lost.called)
def test_force_close(self):
tr = self.create_transport()
tr._buffer.extend(b'1')
self.loop._add_reader(7, mock.sentinel)
self.loop._add_writer(7, mock.sentinel)
tr._force_close(None)
self.assertTrue(tr.is_closing())
self.assertEqual(tr._buffer, list_to_buffer())
self.assertFalse(self.loop.readers)
self.assertFalse(self.loop.writers)
# second close should not remove reader
tr._force_close(None)
self.assertFalse(self.loop.readers)
self.assertEqual(1, self.loop.remove_reader_count[7])
@mock.patch('asyncio.log.logger.error')
def test_fatal_error(self, m_exc):
exc = OSError()
tr = self.create_transport()
tr._force_close = mock.Mock()
tr._fatal_error(exc)
m_exc.assert_not_called()
tr._force_close.assert_called_with(exc)
@mock.patch('asyncio.log.logger.error')
def test_fatal_error_custom_exception(self, m_exc):
class MyError(Exception):
pass
exc = MyError()
tr = self.create_transport()
tr._force_close = mock.Mock()
tr._fatal_error(exc)
m_exc.assert_called_with(
test_utils.MockPattern(
'Fatal error on transport\nprotocol:.*\ntransport:.*'),
exc_info=(MyError, MOCK_ANY, MOCK_ANY))
tr._force_close.assert_called_with(exc)
def test_connection_lost(self):
exc = OSError()
tr = self.create_transport()
self.assertIsNotNone(tr._protocol)
self.assertIsNotNone(tr._loop)
tr._call_connection_lost(exc)
self.protocol.connection_lost.assert_called_with(exc)
self.sock.close.assert_called_with()
self.assertIsNone(tr._sock)
self.assertIsNone(tr._protocol)
self.assertIsNone(tr._loop)
def test__add_reader(self):
tr = self.create_transport()
tr._buffer.extend(b'1')
tr._add_reader(7, mock.sentinel)
self.assertTrue(self.loop.readers)
tr._force_close(None)
self.assertTrue(tr.is_closing())
self.assertFalse(self.loop.readers)
# can not add readers after closing
tr._add_reader(7, mock.sentinel)
self.assertFalse(self.loop.readers)
class SelectorSocketTransportTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.protocol = test_utils.make_test_protocol(asyncio.Protocol)
self.sock = mock.Mock(socket.socket)
self.sock_fd = self.sock.fileno.return_value = 7
def socket_transport(self, waiter=None, sendmsg=False):
transport = _SelectorSocketTransport(self.loop, self.sock,
self.protocol, waiter=waiter)
if sendmsg:
transport._write_ready = transport._write_sendmsg
else:
transport._write_ready = transport._write_send
self.addCleanup(close_transport, transport)
return transport
def test_ctor(self):
waiter = self.loop.create_future()
tr = self.socket_transport(waiter=waiter)
self.loop.run_until_complete(waiter)
self.loop.assert_reader(7, tr._read_ready)
test_utils.run_briefly(self.loop)
self.protocol.connection_made.assert_called_with(tr)
def test_ctor_with_waiter(self):
waiter = self.loop.create_future()
self.socket_transport(waiter=waiter)
self.loop.run_until_complete(waiter)
self.assertIsNone(waiter.result())
def test_pause_resume_reading(self):
tr = self.socket_transport()
test_utils.run_briefly(self.loop)
self.assertFalse(tr._paused)
self.assertTrue(tr.is_reading())
self.loop.assert_reader(7, tr._read_ready)
tr.pause_reading()
tr.pause_reading()
self.assertTrue(tr._paused)
self.assertFalse(tr.is_reading())
self.loop.assert_no_reader(7)
tr.resume_reading()
tr.resume_reading()
self.assertFalse(tr._paused)
self.assertTrue(tr.is_reading())
self.loop.assert_reader(7, tr._read_ready)
tr.close()
self.assertFalse(tr.is_reading())
self.loop.assert_no_reader(7)
def test_pause_reading_connection_made(self):
tr = self.socket_transport()
self.protocol.connection_made.side_effect = lambda _: tr.pause_reading()
test_utils.run_briefly(self.loop)
self.assertFalse(tr.is_reading())
self.loop.assert_no_reader(7)
tr.resume_reading()
self.assertTrue(tr.is_reading())
self.loop.assert_reader(7, tr._read_ready)
tr.close()
self.assertFalse(tr.is_reading())
self.loop.assert_no_reader(7)
def test_read_eof_received_error(self):
transport = self.socket_transport()
transport.close = mock.Mock()
transport._fatal_error = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
self.protocol.eof_received.side_effect = LookupError()
self.sock.recv.return_value = b''
transport._read_ready()
self.protocol.eof_received.assert_called_with()
self.assertTrue(transport._fatal_error.called)
def test_data_received_error(self):
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
self.protocol.data_received.side_effect = LookupError()
self.sock.recv.return_value = b'data'
transport._read_ready()
self.assertTrue(transport._fatal_error.called)
self.assertTrue(self.protocol.data_received.called)
def test_read_ready(self):
transport = self.socket_transport()
self.sock.recv.return_value = b'data'
transport._read_ready()
self.protocol.data_received.assert_called_with(b'data')
def test_read_ready_eof(self):
transport = self.socket_transport()
transport.close = mock.Mock()
self.sock.recv.return_value = b''
transport._read_ready()
self.protocol.eof_received.assert_called_with()
transport.close.assert_called_with()
def test_read_ready_eof_keep_open(self):
transport = self.socket_transport()
transport.close = mock.Mock()
self.sock.recv.return_value = b''
self.protocol.eof_received.return_value = True
transport._read_ready()
self.protocol.eof_received.assert_called_with()
self.assertFalse(transport.close.called)
@mock.patch('logging.exception')
def test_read_ready_tryagain(self, m_exc):
self.sock.recv.side_effect = BlockingIOError
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport._read_ready()
self.assertFalse(transport._fatal_error.called)
@mock.patch('logging.exception')
def test_read_ready_tryagain_interrupted(self, m_exc):
self.sock.recv.side_effect = InterruptedError
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport._read_ready()
self.assertFalse(transport._fatal_error.called)
@mock.patch('logging.exception')
def test_read_ready_conn_reset(self, m_exc):
err = self.sock.recv.side_effect = ConnectionResetError()
transport = self.socket_transport()
transport._force_close = mock.Mock()
with test_utils.disable_logger():
transport._read_ready()
transport._force_close.assert_called_with(err)
@mock.patch('logging.exception')
def test_read_ready_err(self, m_exc):
err = self.sock.recv.side_effect = OSError()
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport._read_ready()
transport._fatal_error.assert_called_with(
err,
'Fatal read error on socket transport')
def test_write(self):
data = b'data'
self.sock.send.return_value = len(data)
transport = self.socket_transport()
transport.write(data)
self.sock.send.assert_called_with(data)
def test_write_bytearray(self):
data = bytearray(b'data')
self.sock.send.return_value = len(data)
transport = self.socket_transport()
transport.write(data)
self.sock.send.assert_called_with(data)
self.assertEqual(data, bytearray(b'data')) # Hasn't been mutated.
def test_write_memoryview(self):
data = memoryview(b'data')
self.sock.send.return_value = len(data)
transport = self.socket_transport()
transport.write(data)
self.sock.send.assert_called_with(data)
def test_write_no_data(self):
transport = self.socket_transport()
transport._buffer.append(memoryview(b'data'))
transport.write(b'')
self.assertFalse(self.sock.send.called)
self.assertEqual(list_to_buffer([b'data']), transport._buffer)
def test_write_buffer(self):
transport = self.socket_transport()
transport._buffer.append(b'data1')
transport.write(b'data2')
self.assertFalse(self.sock.send.called)
self.assertEqual(list_to_buffer([b'data1', b'data2']),
transport._buffer)
def test_write_partial(self):
data = b'data'
self.sock.send.return_value = 2
transport = self.socket_transport()
transport.write(data)
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(list_to_buffer([b'ta']), transport._buffer)
def test_write_partial_bytearray(self):
data = bytearray(b'data')
self.sock.send.return_value = 2
transport = self.socket_transport()
transport.write(data)
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(list_to_buffer([b'ta']), transport._buffer)
self.assertEqual(data, bytearray(b'data')) # Hasn't been mutated.
def test_write_partial_memoryview(self):
data = memoryview(b'data')
self.sock.send.return_value = 2
transport = self.socket_transport()
transport.write(data)
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(list_to_buffer([b'ta']), transport._buffer)
def test_write_partial_none(self):
data = b'data'
self.sock.send.return_value = 0
self.sock.fileno.return_value = 7
transport = self.socket_transport()
transport.write(data)
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(list_to_buffer([b'data']), transport._buffer)
def test_write_tryagain(self):
self.sock.send.side_effect = BlockingIOError
data = b'data'
transport = self.socket_transport()
transport.write(data)
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(list_to_buffer([b'data']), transport._buffer)
def test_write_sendmsg_no_data(self):
self.sock.sendmsg = mock.Mock()
self.sock.sendmsg.return_value = 0
transport = self.socket_transport(sendmsg=True)
transport._buffer.append(memoryview(b'data'))
transport.write(b'')
self.assertFalse(self.sock.sendmsg.called)
self.assertEqual(list_to_buffer([b'data']), transport._buffer)
@unittest.skipUnless(selector_events._HAS_SENDMSG, 'no sendmsg')
def test_writelines_sendmsg_full(self):
data = memoryview(b'data')
self.sock.sendmsg = mock.Mock()
self.sock.sendmsg.return_value = len(data)
transport = self.socket_transport(sendmsg=True)
transport.writelines([data])
self.assertTrue(self.sock.sendmsg.called)
self.assertFalse(self.loop.writers)
@unittest.skipUnless(selector_events._HAS_SENDMSG, 'no sendmsg')
def test_writelines_sendmsg_partial(self):
data = memoryview(b'data')
self.sock.sendmsg = mock.Mock()
self.sock.sendmsg.return_value = 2
transport = self.socket_transport(sendmsg=True)
transport.writelines([data])
self.assertTrue(self.sock.sendmsg.called)
self.assertTrue(self.loop.writers)
def test_writelines_send_full(self):
data = memoryview(b'data')
self.sock.send.return_value = len(data)
self.sock.send.fileno.return_value = 7
transport = self.socket_transport()
transport.writelines([data])
self.assertTrue(self.sock.send.called)
self.assertFalse(self.loop.writers)
def test_writelines_send_partial(self):
data = memoryview(b'data')
self.sock.send.return_value = 2
self.sock.send.fileno.return_value = 7
transport = self.socket_transport()
transport.writelines([data])
self.assertTrue(self.sock.send.called)
self.assertTrue(self.loop.writers)
@unittest.skipUnless(selector_events._HAS_SENDMSG, 'no sendmsg')
def test_write_sendmsg_full(self):
data = memoryview(b'data')
self.sock.sendmsg = mock.Mock()
self.sock.sendmsg.return_value = len(data)
transport = self.socket_transport(sendmsg=True)
transport._buffer.append(data)
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.assertTrue(self.sock.sendmsg.called)
self.assertFalse(self.loop.writers)
@unittest.skipUnless(selector_events._HAS_SENDMSG, 'no sendmsg')
def test_write_sendmsg_partial(self):
data = memoryview(b'data')
self.sock.sendmsg = mock.Mock()
# Sent partial data
self.sock.sendmsg.return_value = 2
transport = self.socket_transport(sendmsg=True)
transport._buffer.append(data)
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.assertTrue(self.sock.sendmsg.called)
self.assertTrue(self.loop.writers)
self.assertEqual(list_to_buffer([b'ta']), transport._buffer)
@unittest.skipUnless(selector_events._HAS_SENDMSG, 'no sendmsg')
def test_write_sendmsg_half_buffer(self):
data = [memoryview(b'data1'), memoryview(b'data2')]
self.sock.sendmsg = mock.Mock()
# Sent partial data
self.sock.sendmsg.return_value = 2
transport = self.socket_transport(sendmsg=True)
transport._buffer.extend(data)
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.assertTrue(self.sock.sendmsg.called)
self.assertTrue(self.loop.writers)
self.assertEqual(list_to_buffer([b'ta1', b'data2']), transport._buffer)
@unittest.skipUnless(selector_events._HAS_SENDMSG, 'no sendmsg')
def test_write_sendmsg_OSError(self):
data = memoryview(b'data')
self.sock.sendmsg = mock.Mock()
err = self.sock.sendmsg.side_effect = OSError()
transport = self.socket_transport(sendmsg=True)
transport._fatal_error = mock.Mock()
transport._buffer.extend(data)
# Calls _fatal_error and clears the buffer
transport._write_ready()
self.assertTrue(self.sock.sendmsg.called)
self.assertFalse(self.loop.writers)
self.assertEqual(list_to_buffer([]), transport._buffer)
transport._fatal_error.assert_called_with(
err,
'Fatal write error on socket transport')
@mock.patch('asyncio.selector_events.logger')
def test_write_exception(self, m_log):
err = self.sock.send.side_effect = OSError()
data = b'data'
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport.write(data)
transport._fatal_error.assert_called_with(
err,
'Fatal write error on socket transport')
transport._conn_lost = 1
self.sock.reset_mock()
transport.write(data)
self.assertFalse(self.sock.send.called)
self.assertEqual(transport._conn_lost, 2)
transport.write(data)
transport.write(data)
transport.write(data)
transport.write(data)
m_log.warning.assert_called_with('socket.send() raised exception.')
def test_write_str(self):
transport = self.socket_transport()
self.assertRaises(TypeError, transport.write, 'str')
def test_write_closing(self):
transport = self.socket_transport()
transport.close()
self.assertEqual(transport._conn_lost, 1)
transport.write(b'data')
self.assertEqual(transport._conn_lost, 2)
def test_write_ready(self):
data = b'data'
self.sock.send.return_value = len(data)
transport = self.socket_transport()
transport._buffer.append(data)
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.assertTrue(self.sock.send.called)
self.assertFalse(self.loop.writers)
def test_write_ready_closing(self):
data = memoryview(b'data')
self.sock.send.return_value = len(data)
transport = self.socket_transport()
transport._closing = True
transport._buffer.append(data)
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.assertTrue(self.sock.send.called)
self.assertFalse(self.loop.writers)
self.sock.close.assert_called_with()
self.protocol.connection_lost.assert_called_with(None)
@unittest.skipIf(sys.flags.optimize, "Assertions are disabled in optimized mode")
def test_write_ready_no_data(self):
transport = self.socket_transport()
# This is an internal error.
self.assertRaises(AssertionError, transport._write_ready)
def test_write_ready_partial(self):
data = memoryview(b'data')
self.sock.send.return_value = 2
transport = self.socket_transport()
transport._buffer.append(data)
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(list_to_buffer([b'ta']), transport._buffer)
def test_write_ready_partial_none(self):
data = b'data'
self.sock.send.return_value = 0
transport = self.socket_transport()
transport._buffer.append(data)
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(list_to_buffer([b'data']), transport._buffer)
def test_write_ready_tryagain(self):
self.sock.send.side_effect = BlockingIOError
transport = self.socket_transport()
buffer = list_to_buffer([b'data1', b'data2'])
transport._buffer = buffer
self.loop._add_writer(7, transport._write_ready)
transport._write_ready()
self.loop.assert_writer(7, transport._write_ready)
self.assertEqual(buffer, transport._buffer)
def test_write_ready_exception(self):
err = self.sock.send.side_effect = OSError()
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport._buffer.extend(b'data')
transport._write_ready()
transport._fatal_error.assert_called_with(
err,
'Fatal write error on socket transport')
def test_write_eof(self):
tr = self.socket_transport()
self.assertTrue(tr.can_write_eof())
tr.write_eof()
self.sock.shutdown.assert_called_with(socket.SHUT_WR)
tr.write_eof()
self.assertEqual(self.sock.shutdown.call_count, 1)
tr.close()
def test_write_eof_buffer(self):
tr = self.socket_transport()
self.sock.send.side_effect = BlockingIOError
tr.write(b'data')
tr.write_eof()
self.assertEqual(tr._buffer, list_to_buffer([b'data']))
self.assertTrue(tr._eof)
self.assertFalse(self.sock.shutdown.called)
self.sock.send.side_effect = lambda _: 4
tr._write_ready()
self.assertTrue(self.sock.send.called)
self.sock.shutdown.assert_called_with(socket.SHUT_WR)
tr.close()
def test_write_eof_after_close(self):
tr = self.socket_transport()
tr.close()
self.loop.run_until_complete(asyncio.sleep(0))
tr.write_eof()
@mock.patch('asyncio.base_events.logger')
def test_transport_close_remove_writer(self, m_log):
remove_writer = self.loop._remove_writer = mock.Mock()
transport = self.socket_transport()
transport.close()
remove_writer.assert_called_with(self.sock_fd)
class SelectorSocketTransportBufferedProtocolTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.protocol = test_utils.make_test_protocol(asyncio.BufferedProtocol)
self.buf = bytearray(1)
self.protocol.get_buffer.side_effect = lambda hint: self.buf
self.sock = mock.Mock(socket.socket)
self.sock_fd = self.sock.fileno.return_value = 7
def socket_transport(self, waiter=None):
transport = _SelectorSocketTransport(self.loop, self.sock,
self.protocol, waiter=waiter)
self.addCleanup(close_transport, transport)
return transport
def test_ctor(self):
waiter = self.loop.create_future()
tr = self.socket_transport(waiter=waiter)
self.loop.run_until_complete(waiter)
self.loop.assert_reader(7, tr._read_ready)
test_utils.run_briefly(self.loop)
self.protocol.connection_made.assert_called_with(tr)
def test_get_buffer_error(self):
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
self.protocol.get_buffer.side_effect = LookupError()
transport._read_ready()
self.assertTrue(transport._fatal_error.called)
self.assertTrue(self.protocol.get_buffer.called)
self.assertFalse(self.protocol.buffer_updated.called)
def test_get_buffer_zerosized(self):
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
self.protocol.get_buffer.side_effect = lambda hint: bytearray(0)
transport._read_ready()
self.assertTrue(transport._fatal_error.called)
self.assertTrue(self.protocol.get_buffer.called)
self.assertFalse(self.protocol.buffer_updated.called)
def test_proto_type_switch(self):
self.protocol = test_utils.make_test_protocol(asyncio.Protocol)
transport = self.socket_transport()
self.sock.recv.return_value = b'data'
transport._read_ready()
self.protocol.data_received.assert_called_with(b'data')
# switch protocol to a BufferedProtocol
buf_proto = test_utils.make_test_protocol(asyncio.BufferedProtocol)
buf = bytearray(4)
buf_proto.get_buffer.side_effect = lambda hint: buf
transport.set_protocol(buf_proto)
self.sock.recv_into.return_value = 10
transport._read_ready()
buf_proto.get_buffer.assert_called_with(-1)
buf_proto.buffer_updated.assert_called_with(10)
def test_buffer_updated_error(self):
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
self.protocol.buffer_updated.side_effect = LookupError()
self.sock.recv_into.return_value = 10
transport._read_ready()
self.assertTrue(transport._fatal_error.called)
self.assertTrue(self.protocol.get_buffer.called)
self.assertTrue(self.protocol.buffer_updated.called)
def test_read_eof_received_error(self):
transport = self.socket_transport()
transport.close = mock.Mock()
transport._fatal_error = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
self.protocol.eof_received.side_effect = LookupError()
self.sock.recv_into.return_value = 0
transport._read_ready()
self.protocol.eof_received.assert_called_with()
self.assertTrue(transport._fatal_error.called)
def test_read_ready(self):
transport = self.socket_transport()
self.sock.recv_into.return_value = 10
transport._read_ready()
self.protocol.get_buffer.assert_called_with(-1)
self.protocol.buffer_updated.assert_called_with(10)
def test_read_ready_eof(self):
transport = self.socket_transport()
transport.close = mock.Mock()
self.sock.recv_into.return_value = 0
transport._read_ready()
self.protocol.eof_received.assert_called_with()
transport.close.assert_called_with()
def test_read_ready_eof_keep_open(self):
transport = self.socket_transport()
transport.close = mock.Mock()
self.sock.recv_into.return_value = 0
self.protocol.eof_received.return_value = True
transport._read_ready()
self.protocol.eof_received.assert_called_with()
self.assertFalse(transport.close.called)
@mock.patch('logging.exception')
def test_read_ready_tryagain(self, m_exc):
self.sock.recv_into.side_effect = BlockingIOError
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport._read_ready()
self.assertFalse(transport._fatal_error.called)
@mock.patch('logging.exception')
def test_read_ready_tryagain_interrupted(self, m_exc):
self.sock.recv_into.side_effect = InterruptedError
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport._read_ready()
self.assertFalse(transport._fatal_error.called)
@mock.patch('logging.exception')
def test_read_ready_conn_reset(self, m_exc):
err = self.sock.recv_into.side_effect = ConnectionResetError()
transport = self.socket_transport()
transport._force_close = mock.Mock()
with test_utils.disable_logger():
transport._read_ready()
transport._force_close.assert_called_with(err)
@mock.patch('logging.exception')
def test_read_ready_err(self, m_exc):
err = self.sock.recv_into.side_effect = OSError()
transport = self.socket_transport()
transport._fatal_error = mock.Mock()
transport._read_ready()
transport._fatal_error.assert_called_with(
err,
'Fatal read error on socket transport')
class SelectorDatagramTransportTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.protocol = test_utils.make_test_protocol(asyncio.DatagramProtocol)
self.sock = mock.Mock(spec_set=socket.socket)
self.sock.fileno.return_value = 7
def datagram_transport(self, address=None):
self.sock.getpeername.side_effect = None if address else OSError
transport = _SelectorDatagramTransport(self.loop, self.sock,
self.protocol,
address=address)
self.addCleanup(close_transport, transport)
return transport
def test_read_ready(self):
transport = self.datagram_transport()
self.sock.recvfrom.return_value = (b'data', ('0.0.0.0', 1234))
transport._read_ready()
self.protocol.datagram_received.assert_called_with(
b'data', ('0.0.0.0', 1234))
def test_transport_inheritance(self):
transport = self.datagram_transport()
self.assertIsInstance(transport, asyncio.DatagramTransport)
def test_read_ready_tryagain(self):
transport = self.datagram_transport()
self.sock.recvfrom.side_effect = BlockingIOError
transport._fatal_error = mock.Mock()
transport._read_ready()
self.assertFalse(transport._fatal_error.called)
def test_read_ready_err(self):
transport = self.datagram_transport()
err = self.sock.recvfrom.side_effect = RuntimeError()
transport._fatal_error = mock.Mock()
transport._read_ready()
transport._fatal_error.assert_called_with(
err,
'Fatal read error on datagram transport')
def test_read_ready_oserr(self):
transport = self.datagram_transport()
err = self.sock.recvfrom.side_effect = OSError()
transport._fatal_error = mock.Mock()
transport._read_ready()
self.assertFalse(transport._fatal_error.called)
self.protocol.error_received.assert_called_with(err)
def test_sendto(self):
data = b'data'
transport = self.datagram_transport()
transport.sendto(data, ('0.0.0.0', 1234))
self.assertTrue(self.sock.sendto.called)
self.assertEqual(
self.sock.sendto.call_args[0], (data, ('0.0.0.0', 1234)))
def test_sendto_bytearray(self):
data = bytearray(b'data')
transport = self.datagram_transport()
transport.sendto(data, ('0.0.0.0', 1234))
self.assertTrue(self.sock.sendto.called)
self.assertEqual(
self.sock.sendto.call_args[0], (data, ('0.0.0.0', 1234)))
def test_sendto_memoryview(self):
data = memoryview(b'data')
transport = self.datagram_transport()
transport.sendto(data, ('0.0.0.0', 1234))
self.assertTrue(self.sock.sendto.called)
self.assertEqual(
self.sock.sendto.call_args[0], (data, ('0.0.0.0', 1234)))
def test_sendto_no_data(self):
transport = self.datagram_transport()
transport.sendto(b'', ('0.0.0.0', 1234))
self.assertTrue(self.sock.sendto.called)
self.assertEqual(
self.sock.sendto.call_args[0], (b'', ('0.0.0.0', 1234)))
def test_sendto_buffer(self):
transport = self.datagram_transport()
transport._buffer.append((b'data1', ('0.0.0.0', 12345)))
transport.sendto(b'data2', ('0.0.0.0', 12345))
self.assertFalse(self.sock.sendto.called)
self.assertEqual(
[(b'data1', ('0.0.0.0', 12345)),
(b'data2', ('0.0.0.0', 12345))],
list(transport._buffer))
def test_sendto_buffer_bytearray(self):
data2 = bytearray(b'data2')
transport = self.datagram_transport()
transport._buffer.append((b'data1', ('0.0.0.0', 12345)))
transport.sendto(data2, ('0.0.0.0', 12345))
self.assertFalse(self.sock.sendto.called)
self.assertEqual(
[(b'data1', ('0.0.0.0', 12345)),
(b'data2', ('0.0.0.0', 12345))],
list(transport._buffer))
self.assertIsInstance(transport._buffer[1][0], bytes)
def test_sendto_buffer_memoryview(self):
data2 = memoryview(b'data2')
transport = self.datagram_transport()
transport._buffer.append((b'data1', ('0.0.0.0', 12345)))
transport.sendto(data2, ('0.0.0.0', 12345))
self.assertFalse(self.sock.sendto.called)
self.assertEqual(
[(b'data1', ('0.0.0.0', 12345)),
(b'data2', ('0.0.0.0', 12345))],
list(transport._buffer))
self.assertIsInstance(transport._buffer[1][0], bytes)
def test_sendto_buffer_nodata(self):
data2 = b''
transport = self.datagram_transport()
transport._buffer.append((b'data1', ('0.0.0.0', 12345)))
transport.sendto(data2, ('0.0.0.0', 12345))
self.assertFalse(self.sock.sendto.called)
self.assertEqual(
[(b'data1', ('0.0.0.0', 12345)),
(b'', ('0.0.0.0', 12345))],
list(transport._buffer))
self.assertIsInstance(transport._buffer[1][0], bytes)
def test_sendto_tryagain(self):
data = b'data'
self.sock.sendto.side_effect = BlockingIOError
transport = self.datagram_transport()
transport.sendto(data, ('0.0.0.0', 12345))
self.loop.assert_writer(7, transport._sendto_ready)
self.assertEqual(
[(b'data', ('0.0.0.0', 12345))], list(transport._buffer))
@mock.patch('asyncio.selector_events.logger')
def test_sendto_exception(self, m_log):
data = b'data'
err = self.sock.sendto.side_effect = RuntimeError()
transport = self.datagram_transport()
transport._fatal_error = mock.Mock()
transport.sendto(data, ())
self.assertTrue(transport._fatal_error.called)
transport._fatal_error.assert_called_with(
err,
'Fatal write error on datagram transport')
transport._conn_lost = 1
transport._address = ('123',)
transport.sendto(data)
transport.sendto(data)
transport.sendto(data)
transport.sendto(data)
transport.sendto(data)
m_log.warning.assert_called_with('socket.send() raised exception.')
def test_sendto_error_received(self):
data = b'data'
self.sock.sendto.side_effect = ConnectionRefusedError
transport = self.datagram_transport()
transport._fatal_error = mock.Mock()
transport.sendto(data, ())
self.assertEqual(transport._conn_lost, 0)
self.assertFalse(transport._fatal_error.called)
def test_sendto_error_received_connected(self):
data = b'data'
self.sock.send.side_effect = ConnectionRefusedError
transport = self.datagram_transport(address=('0.0.0.0', 1))
transport._fatal_error = mock.Mock()
transport.sendto(data)
self.assertFalse(transport._fatal_error.called)
self.assertTrue(self.protocol.error_received.called)
def test_sendto_str(self):
transport = self.datagram_transport()
self.assertRaises(TypeError, transport.sendto, 'str', ())
def test_sendto_connected_addr(self):
transport = self.datagram_transport(address=('0.0.0.0', 1))
self.assertRaises(
ValueError, transport.sendto, b'str', ('0.0.0.0', 2))
def test_sendto_closing(self):
transport = self.datagram_transport(address=(1,))
transport.close()
self.assertEqual(transport._conn_lost, 1)
transport.sendto(b'data', (1,))
self.assertEqual(transport._conn_lost, 2)
def test_sendto_ready(self):
data = b'data'
self.sock.sendto.return_value = len(data)
transport = self.datagram_transport()
transport._buffer.append((data, ('0.0.0.0', 12345)))
self.loop._add_writer(7, transport._sendto_ready)
transport._sendto_ready()
self.assertTrue(self.sock.sendto.called)
self.assertEqual(
self.sock.sendto.call_args[0], (data, ('0.0.0.0', 12345)))
self.assertFalse(self.loop.writers)
def test_sendto_ready_closing(self):
data = b'data'
self.sock.send.return_value = len(data)
transport = self.datagram_transport()
transport._closing = True
transport._buffer.append((data, ()))
self.loop._add_writer(7, transport._sendto_ready)
transport._sendto_ready()
self.sock.sendto.assert_called_with(data, ())
self.assertFalse(self.loop.writers)
self.sock.close.assert_called_with()
self.protocol.connection_lost.assert_called_with(None)
def test_sendto_ready_no_data(self):
transport = self.datagram_transport()
self.loop._add_writer(7, transport._sendto_ready)
transport._sendto_ready()
self.assertFalse(self.sock.sendto.called)
self.assertFalse(self.loop.writers)
def test_sendto_ready_tryagain(self):
self.sock.sendto.side_effect = BlockingIOError
transport = self.datagram_transport()
transport._buffer.extend([(b'data1', ()), (b'data2', ())])
self.loop._add_writer(7, transport._sendto_ready)
transport._sendto_ready()
self.loop.assert_writer(7, transport._sendto_ready)
self.assertEqual(
[(b'data1', ()), (b'data2', ())],
list(transport._buffer))
def test_sendto_ready_exception(self):
err = self.sock.sendto.side_effect = RuntimeError()
transport = self.datagram_transport()
transport._fatal_error = mock.Mock()
transport._buffer.append((b'data', ()))
transport._sendto_ready()
transport._fatal_error.assert_called_with(
err,
'Fatal write error on datagram transport')
def test_sendto_ready_error_received(self):
self.sock.sendto.side_effect = ConnectionRefusedError
transport = self.datagram_transport()
transport._fatal_error = mock.Mock()
transport._buffer.append((b'data', ()))
transport._sendto_ready()
self.assertFalse(transport._fatal_error.called)
def test_sendto_ready_error_received_connection(self):
self.sock.send.side_effect = ConnectionRefusedError
transport = self.datagram_transport(address=('0.0.0.0', 1))
transport._fatal_error = mock.Mock()
transport._buffer.append((b'data', ()))
transport._sendto_ready()
self.assertFalse(transport._fatal_error.called)
self.assertTrue(self.protocol.error_received.called)
@mock.patch('asyncio.base_events.logger.error')
def test_fatal_error_connected(self, m_exc):
transport = self.datagram_transport(address=('0.0.0.0', 1))
err = ConnectionRefusedError()
transport._fatal_error(err)
self.assertFalse(self.protocol.error_received.called)
m_exc.assert_not_called()
@mock.patch('asyncio.base_events.logger.error')
def test_fatal_error_connected_custom_error(self, m_exc):
class MyException(Exception):
pass
transport = self.datagram_transport(address=('0.0.0.0', 1))
err = MyException()
transport._fatal_error(err)
self.assertFalse(self.protocol.error_received.called)
m_exc.assert_called_with(
test_utils.MockPattern(
'Fatal error on transport\nprotocol:.*\ntransport:.*'),
exc_info=(MyException, MOCK_ANY, MOCK_ANY))
if __name__ == '__main__':
unittest.main()
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