"""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()