bpo-33694: Remove test_asyncio ProactorDatagramTransportTests (GH-16288)

ProactorDatagramTransportTests tests are too close to the
implementation.

Lib/test/test_asyncio/test_proactor_events.py

@@ -472,259 +472,6 @@ class ProactorSocketTransportTests(test_utils.TestCase):
         self.assertFalse(self.protocol.pause_writing.called)
 
 
-@unittest.skip('FIXME: bpo-33694: these tests are too close '
-               'to the implementation and should be refactored or removed')
-class ProactorSocketTransportBufferedProtoTests(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.BufferedProtocol)
-        self.buf = bytearray(1)
-        self.protocol.get_buffer.side_effect = lambda hint: self.buf
-
-        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 = self.loop.create_future()
-        tr = self.socket_transport(waiter=fut)
-        test_utils.run_briefly(self.loop)
-        self.assertIsNone(fut.result())
-        self.protocol.connection_made(tr)
-        self.proactor.recv_into.assert_called_with(self.sock, self.buf)
-
-    def test_loop_reading(self):
-        tr = self.socket_transport()
-        tr._loop_reading()
-        self.loop._proactor.recv_into.assert_called_with(self.sock, self.buf)
-        self.assertTrue(self.protocol.get_buffer.called)
-        self.assertFalse(self.protocol.buffer_updated.called)
-        self.assertFalse(self.protocol.eof_received.called)
-
-    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._loop_reading()
-
-        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._loop_reading()
-
-        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)
-        tr = self.socket_transport()
-
-        res = self.loop.create_future()
-        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, 32768)
-        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
-
-        tr.set_protocol(buf_proto)
-        test_utils.run_briefly(self.loop)
-        res = self.loop.create_future()
-        res.set_result(4)
-
-        tr._read_fut = res
-        tr._loop_reading(res)
-        self.loop._proactor.recv_into.assert_called_with(self.sock, buf)
-        buf_proto.buffer_updated.assert_called_with(4)
-
-    @unittest.skip('FIXME: bpo-33694: this test is too close to the '
-                   'implementation and should be refactored or removed')
-    def test_proto_buf_switch(self):
-        tr = self.socket_transport()
-        test_utils.run_briefly(self.loop)
-        self.protocol.get_buffer.assert_called_with(-1)
-
-        # switch protocol to *another* BufferedProtocol
-
-        buf_proto = test_utils.make_test_protocol(asyncio.BufferedProtocol)
-        buf = bytearray(4)
-        buf_proto.get_buffer.side_effect = lambda hint: buf
-        tr._read_fut.done.side_effect = lambda: False
-        tr.set_protocol(buf_proto)
-        self.assertFalse(buf_proto.get_buffer.called)
-        test_utils.run_briefly(self.loop)
-        buf_proto.get_buffer.assert_called_with(-1)
-
-    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()
-
-        res = self.loop.create_future()
-        res.set_result(10)
-        transport._read_fut = res
-        transport._loop_reading(res)
-
-        self.assertTrue(transport._fatal_error.called)
-        self.assertFalse(self.protocol.get_buffer.called)
-        self.assertTrue(self.protocol.buffer_updated.called)
-
-    def test_loop_eof_received_error(self):
-        res = self.loop.create_future()
-        res.set_result(0)
-
-        self.protocol.eof_received.side_effect = LookupError()
-
-        tr = self.socket_transport()
-        tr._fatal_error = mock.Mock()
-
-        tr.close = mock.Mock()
-        tr._read_fut = res
-        tr._loop_reading(res)
-        self.assertFalse(self.loop._proactor.recv_into.called)
-        self.assertTrue(self.protocol.eof_received.called)
-        self.assertTrue(tr._fatal_error.called)
-
-    def test_loop_reading_data(self):
-        res = self.loop.create_future()
-        res.set_result(4)
-
-        tr = self.socket_transport()
-        tr._read_fut = res
-        tr._loop_reading(res)
-        self.loop._proactor.recv_into.assert_called_with(self.sock, self.buf)
-        self.protocol.buffer_updated.assert_called_with(4)
-
-    def test_loop_reading_no_data(self):
-        res = self.loop.create_future()
-        res.set_result(0)
-
-        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_into.called)
-        self.assertTrue(self.protocol.eof_received.called)
-        self.assertTrue(tr.close.called)
-
-    def test_loop_reading_aborted(self):
-        err = self.loop._proactor.recv_into.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_into.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_into.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_into.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_pause_resume_reading(self):
-        tr = self.socket_transport()
-        futures = []
-        for msg in [10, 20, 30, 40, 0]:
-            f = self.loop.create_future()
-            f.set_result(msg)
-            futures.append(f)
-
-        self.loop._proactor.recv_into.side_effect = futures
-        self.loop._run_once()
-        self.assertFalse(tr._paused)
-        self.assertTrue(tr.is_reading())
-        self.loop._run_once()
-        self.protocol.buffer_updated.assert_called_with(10)
-        self.loop._run_once()
-        self.protocol.buffer_updated.assert_called_with(20)
-
-        tr.pause_reading()
-        tr.pause_reading()
-        self.assertTrue(tr._paused)
-        self.assertFalse(tr.is_reading())
-        for i in range(10):
-            self.loop._run_once()
-        self.protocol.buffer_updated.assert_called_with(20)
-
-        tr.resume_reading()
-        tr.resume_reading()
-        self.assertFalse(tr._paused)
-        self.assertTrue(tr.is_reading())
-        self.loop._run_once()
-        self.protocol.buffer_updated.assert_called_with(30)
-        self.loop._run_once()
-        self.protocol.buffer_updated.assert_called_with(40)
-        tr.close()
-
-        self.assertFalse(tr.is_reading())
-
-
 class ProactorDatagramTransportTests(test_utils.TestCase):
 
     def setUp(self):