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594 lines (492 loc) · 20.3 KB
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"""Tests for proactor_events.py"""
import socket
import unittest
from unittest import mock
import asyncio
from asyncio.proactor_events import BaseProactorEventLoop
from asyncio.proactor_events import _ProactorSocketTransport
from asyncio.proactor_events import _ProactorWritePipeTransport
from asyncio.proactor_events import _ProactorDuplexPipeTransport
from asyncio import test_utils
def close_transport(transport):
# Don't call transport.close() because the event loop and the IOCP proactor
# are mocked
if transport._sock is None:
return
transport._sock.close()
transport._sock = None
class ProactorSocketTransportTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.loop = self.new_test_loop()
self.addCleanup(self.loop.close)
self.proactor = mock.Mock()
self.loop._proactor = self.proactor
self.protocol = test_utils.make_test_protocol(asyncio.Protocol)
self.sock = mock.Mock(socket.socket)
def socket_transport(self, waiter=None):
transport = _ProactorSocketTransport(self.loop, self.sock,
self.protocol, waiter=waiter)
self.addCleanup(close_transport, transport)
return transport
def test_ctor(self):
fut = asyncio.Future(loop=self.loop)
tr = self.socket_transport(waiter=fut)
test_utils.run_briefly(self.loop)
self.assertIsNone(fut.result())
self.protocol.connection_made(tr)
self.proactor.recv.assert_called_with(self.sock, 4096)
def test_loop_reading(self):
tr = self.socket_transport()
tr._loop_reading()
self.loop._proactor.recv.assert_called_with(self.sock, 4096)
self.assertFalse(self.protocol.data_received.called)
self.assertFalse(self.protocol.eof_received.called)
def test_loop_reading_data(self):
res = asyncio.Future(loop=self.loop)
res.set_result(b'data')
tr = self.socket_transport()
tr._read_fut = res
tr._loop_reading(res)
self.loop._proactor.recv.assert_called_with(self.sock, 4096)
self.protocol.data_received.assert_called_with(b'data')
def test_loop_reading_no_data(self):
res = asyncio.Future(loop=self.loop)
res.set_result(b'')
tr = self.socket_transport()
self.assertRaises(AssertionError, tr._loop_reading, res)
tr.close = mock.Mock()
tr._read_fut = res
tr._loop_reading(res)
self.assertFalse(self.loop._proactor.recv.called)
self.assertTrue(self.protocol.eof_received.called)
self.assertTrue(tr.close.called)
def test_loop_reading_aborted(self):
err = self.loop._proactor.recv.side_effect = ConnectionAbortedError()
tr = self.socket_transport()
tr._fatal_error = mock.Mock()
tr._loop_reading()
tr._fatal_error.assert_called_with(
err,
'Fatal read error on pipe transport')
def test_loop_reading_aborted_closing(self):
self.loop._proactor.recv.side_effect = ConnectionAbortedError()
tr = self.socket_transport()
tr._closing = True
tr._fatal_error = mock.Mock()
tr._loop_reading()
self.assertFalse(tr._fatal_error.called)
def test_loop_reading_aborted_is_fatal(self):
self.loop._proactor.recv.side_effect = ConnectionAbortedError()
tr = self.socket_transport()
tr._closing = False
tr._fatal_error = mock.Mock()
tr._loop_reading()
self.assertTrue(tr._fatal_error.called)
def test_loop_reading_conn_reset_lost(self):
err = self.loop._proactor.recv.side_effect = ConnectionResetError()
tr = self.socket_transport()
tr._closing = False
tr._fatal_error = mock.Mock()
tr._force_close = mock.Mock()
tr._loop_reading()
self.assertFalse(tr._fatal_error.called)
tr._force_close.assert_called_with(err)
def test_loop_reading_exception(self):
err = self.loop._proactor.recv.side_effect = (OSError())
tr = self.socket_transport()
tr._fatal_error = mock.Mock()
tr._loop_reading()
tr._fatal_error.assert_called_with(
err,
'Fatal read error on pipe transport')
def test_write(self):
tr = self.socket_transport()
tr._loop_writing = mock.Mock()
tr.write(b'data')
self.assertEqual(tr._buffer, None)
tr._loop_writing.assert_called_with(data=b'data')
def test_write_no_data(self):
tr = self.socket_transport()
tr.write(b'')
self.assertFalse(tr._buffer)
def test_write_more(self):
tr = self.socket_transport()
tr._write_fut = mock.Mock()
tr._loop_writing = mock.Mock()
tr.write(b'data')
self.assertEqual(tr._buffer, b'data')
self.assertFalse(tr._loop_writing.called)
def test_loop_writing(self):
tr = self.socket_transport()
tr._buffer = bytearray(b'data')
tr._loop_writing()
self.loop._proactor.send.assert_called_with(self.sock, b'data')
self.loop._proactor.send.return_value.add_done_callback.\
assert_called_with(tr._loop_writing)
@mock.patch('asyncio.proactor_events.logger')
def test_loop_writing_err(self, m_log):
err = self.loop._proactor.send.side_effect = OSError()
tr = self.socket_transport()
tr._fatal_error = mock.Mock()
tr._buffer = [b'da', b'ta']
tr._loop_writing()
tr._fatal_error.assert_called_with(
err,
'Fatal write error on pipe transport')
tr._conn_lost = 1
tr.write(b'data')
tr.write(b'data')
tr.write(b'data')
tr.write(b'data')
tr.write(b'data')
self.assertEqual(tr._buffer, None)
m_log.warning.assert_called_with('socket.send() raised exception.')
def test_loop_writing_stop(self):
fut = asyncio.Future(loop=self.loop)
fut.set_result(b'data')
tr = self.socket_transport()
tr._write_fut = fut
tr._loop_writing(fut)
self.assertIsNone(tr._write_fut)
def test_loop_writing_closing(self):
fut = asyncio.Future(loop=self.loop)
fut.set_result(1)
tr = self.socket_transport()
tr._write_fut = fut
tr.close()
tr._loop_writing(fut)
self.assertIsNone(tr._write_fut)
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(None)
def test_abort(self):
tr = self.socket_transport()
tr._force_close = mock.Mock()
tr.abort()
tr._force_close.assert_called_with(None)
def test_close(self):
tr = self.socket_transport()
tr.close()
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(None)
self.assertTrue(tr.is_closing())
self.assertEqual(tr._conn_lost, 1)
self.protocol.connection_lost.reset_mock()
tr.close()
test_utils.run_briefly(self.loop)
self.assertFalse(self.protocol.connection_lost.called)
def test_close_write_fut(self):
tr = self.socket_transport()
tr._write_fut = mock.Mock()
tr.close()
test_utils.run_briefly(self.loop)
self.assertFalse(self.protocol.connection_lost.called)
def test_close_buffer(self):
tr = self.socket_transport()
tr._buffer = [b'data']
tr.close()
test_utils.run_briefly(self.loop)
self.assertFalse(self.protocol.connection_lost.called)
@mock.patch('asyncio.base_events.logger')
def test_fatal_error(self, m_logging):
tr = self.socket_transport()
tr._force_close = mock.Mock()
tr._fatal_error(None)
self.assertTrue(tr._force_close.called)
self.assertTrue(m_logging.error.called)
def test_force_close(self):
tr = self.socket_transport()
tr._buffer = [b'data']
read_fut = tr._read_fut = mock.Mock()
write_fut = tr._write_fut = mock.Mock()
tr._force_close(None)
read_fut.cancel.assert_called_with()
write_fut.cancel.assert_called_with()
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(None)
self.assertEqual(None, tr._buffer)
self.assertEqual(tr._conn_lost, 1)
def test_force_close_idempotent(self):
tr = self.socket_transport()
tr._closing = True
tr._force_close(None)
test_utils.run_briefly(self.loop)
self.assertFalse(self.protocol.connection_lost.called)
def test_fatal_error_2(self):
tr = self.socket_transport()
tr._buffer = [b'data']
tr._force_close(None)
test_utils.run_briefly(self.loop)
self.protocol.connection_lost.assert_called_with(None)
self.assertEqual(None, tr._buffer)
def test_call_connection_lost(self):
tr = self.socket_transport()
tr._call_connection_lost(None)
self.assertTrue(self.protocol.connection_lost.called)
self.assertTrue(self.sock.close.called)
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()
f = asyncio.Future(loop=self.loop)
tr._loop._proactor.send.return_value = f
tr.write(b'data')
tr.write_eof()
self.assertTrue(tr._eof_written)
self.assertFalse(self.sock.shutdown.called)
tr._loop._proactor.send.assert_called_with(self.sock, b'data')
f.set_result(4)
self.loop._run_once()
self.sock.shutdown.assert_called_with(socket.SHUT_WR)
tr.close()
def test_write_eof_write_pipe(self):
tr = _ProactorWritePipeTransport(
self.loop, self.sock, self.protocol)
self.assertTrue(tr.can_write_eof())
tr.write_eof()
self.assertTrue(tr.is_closing())
self.loop._run_once()
self.assertTrue(self.sock.close.called)
tr.close()
def test_write_eof_buffer_write_pipe(self):
tr = _ProactorWritePipeTransport(self.loop, self.sock, self.protocol)
f = asyncio.Future(loop=self.loop)
tr._loop._proactor.send.return_value = f
tr.write(b'data')
tr.write_eof()
self.assertTrue(tr.is_closing())
self.assertFalse(self.sock.shutdown.called)
tr._loop._proactor.send.assert_called_with(self.sock, b'data')
f.set_result(4)
self.loop._run_once()
self.loop._run_once()
self.assertTrue(self.sock.close.called)
tr.close()
def test_write_eof_duplex_pipe(self):
tr = _ProactorDuplexPipeTransport(
self.loop, self.sock, self.protocol)
self.assertFalse(tr.can_write_eof())
with self.assertRaises(NotImplementedError):
tr.write_eof()
close_transport(tr)
def test_pause_resume_reading(self):
tr = self.socket_transport()
futures = []
for msg in [b'data1', b'data2', b'data3', b'data4', b'']:
f = asyncio.Future(loop=self.loop)
f.set_result(msg)
futures.append(f)
self.loop._proactor.recv.side_effect = futures
self.loop._run_once()
self.assertFalse(tr._paused)
self.loop._run_once()
self.protocol.data_received.assert_called_with(b'data1')
self.loop._run_once()
self.protocol.data_received.assert_called_with(b'data2')
tr.pause_reading()
self.assertTrue(tr._paused)
for i in range(10):
self.loop._run_once()
self.protocol.data_received.assert_called_with(b'data2')
tr.resume_reading()
self.assertFalse(tr._paused)
self.loop._run_once()
self.protocol.data_received.assert_called_with(b'data3')
self.loop._run_once()
self.protocol.data_received.assert_called_with(b'data4')
tr.close()
def pause_writing_transport(self, high):
tr = self.socket_transport()
tr.set_write_buffer_limits(high=high)
self.assertEqual(tr.get_write_buffer_size(), 0)
self.assertFalse(self.protocol.pause_writing.called)
self.assertFalse(self.protocol.resume_writing.called)
return tr
def test_pause_resume_writing(self):
tr = self.pause_writing_transport(high=4)
# write a large chunk, must pause writing
fut = asyncio.Future(loop=self.loop)
self.loop._proactor.send.return_value = fut
tr.write(b'large data')
self.loop._run_once()
self.assertTrue(self.protocol.pause_writing.called)
# flush the buffer
fut.set_result(None)
self.loop._run_once()
self.assertEqual(tr.get_write_buffer_size(), 0)
self.assertTrue(self.protocol.resume_writing.called)
def test_pause_writing_2write(self):
tr = self.pause_writing_transport(high=4)
# first short write, the buffer is not full (3 <= 4)
fut1 = asyncio.Future(loop=self.loop)
self.loop._proactor.send.return_value = fut1
tr.write(b'123')
self.loop._run_once()
self.assertEqual(tr.get_write_buffer_size(), 3)
self.assertFalse(self.protocol.pause_writing.called)
# fill the buffer, must pause writing (6 > 4)
tr.write(b'abc')
self.loop._run_once()
self.assertEqual(tr.get_write_buffer_size(), 6)
self.assertTrue(self.protocol.pause_writing.called)
def test_pause_writing_3write(self):
tr = self.pause_writing_transport(high=4)
# first short write, the buffer is not full (1 <= 4)
fut = asyncio.Future(loop=self.loop)
self.loop._proactor.send.return_value = fut
tr.write(b'1')
self.loop._run_once()
self.assertEqual(tr.get_write_buffer_size(), 1)
self.assertFalse(self.protocol.pause_writing.called)
# second short write, the buffer is not full (3 <= 4)
tr.write(b'23')
self.loop._run_once()
self.assertEqual(tr.get_write_buffer_size(), 3)
self.assertFalse(self.protocol.pause_writing.called)
# fill the buffer, must pause writing (6 > 4)
tr.write(b'abc')
self.loop._run_once()
self.assertEqual(tr.get_write_buffer_size(), 6)
self.assertTrue(self.protocol.pause_writing.called)
def test_dont_pause_writing(self):
tr = self.pause_writing_transport(high=4)
# write a large chunk which completes immedialty,
# it should not pause writing
fut = asyncio.Future(loop=self.loop)
fut.set_result(None)
self.loop._proactor.send.return_value = fut
tr.write(b'very large data')
self.loop._run_once()
self.assertEqual(tr.get_write_buffer_size(), 0)
self.assertFalse(self.protocol.pause_writing.called)
class BaseProactorEventLoopTests(test_utils.TestCase):
def setUp(self):
super().setUp()
self.sock = test_utils.mock_nonblocking_socket()
self.proactor = mock.Mock()
self.ssock, self.csock = mock.Mock(), mock.Mock()
class EventLoop(BaseProactorEventLoop):
def _socketpair(s):
return (self.ssock, self.csock)
self.loop = EventLoop(self.proactor)
self.set_event_loop(self.loop)
@mock.patch.object(BaseProactorEventLoop, 'call_soon')
@mock.patch.object(BaseProactorEventLoop, '_socketpair')
def test_ctor(self, socketpair, call_soon):
ssock, csock = socketpair.return_value = (
mock.Mock(), mock.Mock())
loop = BaseProactorEventLoop(self.proactor)
self.assertIs(loop._ssock, ssock)
self.assertIs(loop._csock, csock)
self.assertEqual(loop._internal_fds, 1)
call_soon.assert_called_with(loop._loop_self_reading)
loop.close()
def test_close_self_pipe(self):
self.loop._close_self_pipe()
self.assertEqual(self.loop._internal_fds, 0)
self.assertTrue(self.ssock.close.called)
self.assertTrue(self.csock.close.called)
self.assertIsNone(self.loop._ssock)
self.assertIsNone(self.loop._csock)
# Don't call close(): _close_self_pipe() cannot be called twice
self.loop._closed = True
def test_close(self):
self.loop._close_self_pipe = mock.Mock()
self.loop.close()
self.assertTrue(self.loop._close_self_pipe.called)
self.assertTrue(self.proactor.close.called)
self.assertIsNone(self.loop._proactor)
self.loop._close_self_pipe.reset_mock()
self.loop.close()
self.assertFalse(self.loop._close_self_pipe.called)
def test_sock_recv(self):
self.loop.sock_recv(self.sock, 1024)
self.proactor.recv.assert_called_with(self.sock, 1024)
def test_sock_sendall(self):
self.loop.sock_sendall(self.sock, b'data')
self.proactor.send.assert_called_with(self.sock, b'data')
def test_sock_connect(self):
self.loop.sock_connect(self.sock, ('1.2.3.4', 123))
self.proactor.connect.assert_called_with(self.sock, ('1.2.3.4', 123))
def test_sock_accept(self):
self.loop.sock_accept(self.sock)
self.proactor.accept.assert_called_with(self.sock)
def test_socketpair(self):
class EventLoop(BaseProactorEventLoop):
# override the destructor to not log a ResourceWarning
def __del__(self):
pass
self.assertRaises(
NotImplementedError, EventLoop, self.proactor)
def test_make_socket_transport(self):
tr = self.loop._make_socket_transport(self.sock, asyncio.Protocol())
self.assertIsInstance(tr, _ProactorSocketTransport)
close_transport(tr)
def test_loop_self_reading(self):
self.loop._loop_self_reading()
self.proactor.recv.assert_called_with(self.ssock, 4096)
self.proactor.recv.return_value.add_done_callback.assert_called_with(
self.loop._loop_self_reading)
def test_loop_self_reading_fut(self):
fut = mock.Mock()
self.loop._loop_self_reading(fut)
self.assertTrue(fut.result.called)
self.proactor.recv.assert_called_with(self.ssock, 4096)
self.proactor.recv.return_value.add_done_callback.assert_called_with(
self.loop._loop_self_reading)
def test_loop_self_reading_exception(self):
self.loop.close = mock.Mock()
self.loop.call_exception_handler = mock.Mock()
self.proactor.recv.side_effect = OSError()
self.loop._loop_self_reading()
self.assertTrue(self.loop.call_exception_handler.called)
def test_write_to_self(self):
self.loop._write_to_self()
self.csock.send.assert_called_with(b'\0')
def test_process_events(self):
self.loop._process_events([])
@mock.patch('asyncio.base_events.logger')
def test_create_server(self, m_log):
pf = mock.Mock()
call_soon = self.loop.call_soon = mock.Mock()
self.loop._start_serving(pf, self.sock)
self.assertTrue(call_soon.called)
# callback
loop = call_soon.call_args[0][0]
loop()
self.proactor.accept.assert_called_with(self.sock)
# conn
fut = mock.Mock()
fut.result.return_value = (mock.Mock(), mock.Mock())
make_tr = self.loop._make_socket_transport = mock.Mock()
loop(fut)
self.assertTrue(fut.result.called)
self.assertTrue(make_tr.called)
# exception
fut.result.side_effect = OSError()
loop(fut)
self.assertTrue(self.sock.close.called)
self.assertTrue(m_log.error.called)
def test_create_server_cancel(self):
pf = mock.Mock()
call_soon = self.loop.call_soon = mock.Mock()
self.loop._start_serving(pf, self.sock)
loop = call_soon.call_args[0][0]
# cancelled
fut = asyncio.Future(loop=self.loop)
fut.cancel()
loop(fut)
self.assertTrue(self.sock.close.called)
def test_stop_serving(self):
sock = mock.Mock()
self.loop._stop_serving(sock)
self.assertTrue(sock.close.called)
self.proactor._stop_serving.assert_called_with(sock)
if __name__ == '__main__':
unittest.main()