bpo-23819: Fix asyncio tests on python optimized mode

Lib/asyncio/base_events.py

@@ -1285,8 +1285,8 @@ async def create_datagram_endpoint(self, protocol_factory,
                 addr_infos = {}  # Using order preserving dict
                 for idx, addr in ((0, local_addr), (1, remote_addr)):
                     if addr is not None:
-                        assert isinstance(addr, tuple) and len(addr) == 2, (
-                            '2-tuple is expected')
+                        if not (isinstance(addr, tuple) and len(addr) == 2):
+                            raise TypeError('2-tuple is expected')
 
                         infos = await self._ensure_resolved(
                             addr, family=family, type=socket.SOCK_DGRAM,

Lib/test/test_asyncio/test_base_events.py

@@ -1595,11 +1595,11 @@ def test_create_datagram_endpoint_addr_error(self):
         coro = self.loop.create_datagram_endpoint(
             MyDatagramProto, local_addr='localhost')
         self.assertRaises(
-            AssertionError, self.loop.run_until_complete, coro)
+            TypeError, self.loop.run_until_complete, coro)
         coro = self.loop.create_datagram_endpoint(
             MyDatagramProto, local_addr=('localhost', 1, 2, 3))
         self.assertRaises(
-            AssertionError, self.loop.run_until_complete, coro)
+            TypeError, self.loop.run_until_complete, coro)
 
     def test_create_datagram_endpoint_connect_err(self):
         self.loop.sock_connect = mock.Mock()

Lib/test/test_asyncio/test_proactor_events.py

@@ -77,6 +77,7 @@ def test_loop_reading_data(self):
         self.loop._proactor.recv_into.assert_called_with(self.sock, called_buf)
         self.protocol.data_received.assert_called_with(bytearray(buf))
 
+    @unittest.skipIf(sys.flags.optimize, "Assertions are disabled in optimized mode")
     def test_loop_reading_no_data(self):
         res = self.loop.create_future()
         res.set_result(0)
@@ -869,6 +870,7 @@ def test_datagram_loop_reading_data(self):
         self.protocol.datagram_received.assert_called_with(b'data', ('127.0.0.1', 12068))
         close_transport(tr)
 
+    @unittest.skipIf(sys.flags.optimize, "Assertions are disabled in optimized mode")
     def test_datagram_loop_reading_no_data(self):
         res = self.loop.create_future()
         res.set_result((b'', ('127.0.0.1', 12068)))

Lib/test/test_asyncio/test_selector_events.py

@@ -1,5 +1,6 @@
 """Tests for selector_events.py"""
 
+import sys
 import selectors
 import socket
 import unittest
@@ -804,6 +805,7 @@ def test_write_ready_closing(self):
         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.

Misc/NEWS.d/next/Tests/2021-12-19-08-44-32.bpo-23819.9ueiII.rst

@@ -0,0 +1 @@
+Fixed :mod:`asyncio` tests in python optimized mode. Patch by Kumar Aditya.