From 0f4a51849a446618a21d84548a1e068087a6f356 Mon Sep 17 00:00:00 2001
From: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
Date: Wed, 15 Jun 2022 20:11:47 +0530
Subject: [PATCH] GH-93850: Fix test_asyncio exception ignored tracebacks
 (GH-93854) (cherry picked from commit
 b415c5f1aa29259d5d18a5d85b9365430614383a)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
---
 Lib/test/test_asyncio/test_runners.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Lib/test/test_asyncio/test_runners.py b/Lib/test/test_asyncio/test_runners.py
index 0c2092147842ca..3e288d1b62ade3 100644
--- a/Lib/test/test_asyncio/test_runners.py
+++ b/Lib/test/test_asyncio/test_runners.py
@@ -45,6 +45,9 @@ class BaseTest(unittest.TestCase):
     def new_loop(self):
         loop = asyncio.BaseEventLoop()
         loop._process_events = mock.Mock()
+        # Mock waking event loop from select
+        loop._write_to_self = mock.Mock()
+        loop._write_to_self.return_value = None
         loop._selector = mock.Mock()
         loop._selector.select.return_value = ()
         loop.shutdown_ag_run = False