GH-94597: deprecate `SafeChildWatcher`, `FastChildWatcher` and `MultiLoopChildWatcher` child watchers (#98089)

1 files changed, 16 insertions, 5 deletions

diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
index 03fb5e649d8..025da0f20ed 100644
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -12,6 +12,7 @@ import sys
 import threading
 import unittest
 from unittest import mock
+import warnings
 from test.support import os_helper
 from test.support import socket_helper
 
@@ -1686,12 +1687,16 @@ class ChildWatcherTestsMixin:
 
 class SafeChildWatcherTests (ChildWatcherTestsMixin, test_utils.TestCase):
     def create_watcher(self):
-        return asyncio.SafeChildWatcher()
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", DeprecationWarning)
+            return asyncio.SafeChildWatcher()
 
 
 class FastChildWatcherTests (ChildWatcherTestsMixin, test_utils.TestCase):
     def create_watcher(self):
-        return asyncio.FastChildWatcher()
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", DeprecationWarning)
+            return asyncio.FastChildWatcher()
 
 
 class PolicyTests(unittest.TestCase):
@@ -1724,7 +1729,9 @@ class PolicyTests(unittest.TestCase):
 
     def test_get_child_watcher_after_set(self):
         policy = self.create_policy()
-        watcher = asyncio.FastChildWatcher()
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", DeprecationWarning)
+            watcher = asyncio.FastChildWatcher()
 
         policy.set_child_watcher(watcher)
         self.assertIs(policy._watcher, watcher)
@@ -1745,7 +1752,9 @@ class PolicyTests(unittest.TestCase):
             policy.get_event_loop().close()
 
         policy = self.create_policy()
-        policy.set_child_watcher(asyncio.SafeChildWatcher())
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", DeprecationWarning)
+            policy.set_child_watcher(asyncio.SafeChildWatcher())
 
         th = threading.Thread(target=f)
         th.start()
@@ -1757,7 +1766,9 @@ class PolicyTests(unittest.TestCase):
 
         # Explicitly setup SafeChildWatcher,
         # default ThreadedChildWatcher has no _loop property
-        watcher = asyncio.SafeChildWatcher()
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", DeprecationWarning)
+            watcher = asyncio.SafeChildWatcher()
         policy.set_child_watcher(watcher)
         watcher.attach_loop(loop)