gh-127949: deprecate `asyncio.get_event_loop_policy` (#128053)

This deprecates `asyncio.get_event_loop_policy` and will be removed in Python 3.16.

1 files changed, 18 insertions, 11 deletions

diff --git a/Lib/test/test_asyncio/test_events.py b/Lib/test/test_asyncio/test_events.py
index 50df1b6..d43f66c 100644
--- a/Lib/test/test_asyncio/test_events.py
+++ b/Lib/test/test_asyncio/test_events.py
@@ -2397,7 +2397,7 @@ class HandleTests(test_utils.TestCase):
         self.assertRegex(repr(h), regex)
 
     def test_handle_source_traceback(self):
-        loop = asyncio.get_event_loop_policy().new_event_loop()
+        loop = asyncio.new_event_loop()
         loop.set_debug(True)
         self.set_event_loop(loop)
 
@@ -2759,24 +2759,31 @@ class PolicyTests(unittest.TestCase):
         old_loop.close()
 
     def test_get_event_loop_policy(self):
-        policy = asyncio.get_event_loop_policy()
-        self.assertIsInstance(policy, asyncio.AbstractEventLoopPolicy)
-        self.assertIs(policy, asyncio.get_event_loop_policy())
+        with self.assertWarnsRegex(
+                DeprecationWarning, "'asyncio.get_event_loop_policy' is deprecated"):
+            policy = asyncio.get_event_loop_policy()
+            self.assertIsInstance(policy, asyncio.AbstractEventLoopPolicy)
+            self.assertIs(policy, asyncio.get_event_loop_policy())
 
     def test_set_event_loop_policy(self):
         with self.assertWarnsRegex(
-                DeprecationWarning, "'set_event_loop_policy' is deprecated"):
+                DeprecationWarning, "'asyncio.set_event_loop_policy' is deprecated"):
             self.assertRaises(
                 TypeError, asyncio.set_event_loop_policy, object())
 
-        old_policy = asyncio.get_event_loop_policy()
+        with self.assertWarnsRegex(
+                DeprecationWarning, "'asyncio.get_event_loop_policy' is deprecated"):
+            old_policy = asyncio.get_event_loop_policy()
 
         policy = asyncio.DefaultEventLoopPolicy()
         with self.assertWarnsRegex(
-                DeprecationWarning, "'set_event_loop_policy' is deprecated"):
+                DeprecationWarning, "'asyncio.set_event_loop_policy' is deprecated"):
             asyncio.set_event_loop_policy(policy)
-        self.assertIs(policy, asyncio.get_event_loop_policy())
-        self.assertIsNot(policy, old_policy)
+
+        with self.assertWarnsRegex(
+                DeprecationWarning, "'asyncio.get_event_loop_policy' is deprecated"):
+            self.assertIs(policy, asyncio.get_event_loop_policy())
+            self.assertIsNot(policy, old_policy)
 
 
 class GetEventLoopTestsMixin:
@@ -2859,7 +2866,7 @@ class GetEventLoopTestsMixin:
             def get_event_loop(self):
                 raise TestError
 
-        old_policy = asyncio.get_event_loop_policy()
+        old_policy = asyncio._get_event_loop_policy()
         try:
             asyncio._set_event_loop_policy(Policy())
             loop = asyncio.new_event_loop()
@@ -2899,7 +2906,7 @@ class GetEventLoopTestsMixin:
         self.assertIs(asyncio._get_running_loop(), None)
 
     def test_get_event_loop_returns_running_loop2(self):
-        old_policy = asyncio.get_event_loop_policy()
+        old_policy = asyncio._get_event_loop_policy()
         try:
             asyncio._set_event_loop_policy(asyncio.DefaultEventLoopPolicy())
             loop = asyncio.new_event_loop()