1 files changed, 13 insertions, 1 deletions
diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
index 5bad21e..03fb5e6 100644
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -1702,7 +1702,8 @@ class PolicyTests(unittest.TestCase):
     def test_get_default_child_watcher(self):
         policy = self.create_policy()
         self.assertIsNone(policy._watcher)
-
+        unix_events.can_use_pidfd = mock.Mock()
+        unix_events.can_use_pidfd.return_value = False
         watcher = policy.get_child_watcher()
         self.assertIsInstance(watcher, asyncio.ThreadedChildWatcher)
 
@@ -1710,6 +1711,17 @@ class PolicyTests(unittest.TestCase):
 
         self.assertIs(watcher, policy.get_child_watcher())
 
+        policy = self.create_policy()
+        self.assertIsNone(policy._watcher)
+        unix_events.can_use_pidfd = mock.Mock()
+        unix_events.can_use_pidfd.return_value = True
+        watcher = policy.get_child_watcher()
+        self.assertIsInstance(watcher, asyncio.PidfdChildWatcher)
+
+        self.assertIs(policy._watcher, watcher)
+
+        self.assertIs(watcher, policy.get_child_watcher())
+
     def test_get_child_watcher_after_set(self):
         policy = self.create_policy()
         watcher = asyncio.FastChildWatcher()