Move the cleanup to the class teardown.

ericsnowcurrently · ericsnowcurrently · commit b0519f9a2818 · 2024-10-18T10:29:20.000-06:00
diff --git a/Lib/test/test_concurrent_futures/test_interpreter_pool.py b/Lib/test/test_concurrent_futures/test_interpreter_pool.py
@@ -282,6 +282,15 @@ def test_idle_thread_reuse(self):
 
 class AsyncioTest(InterpretersMixin, testasyncio_utils.TestCase):
 
+    @classmethod
+    def setUpClass(cls):
+        policy = support.maybe_get_event_loop_policy()
+        assert policy is None, policy
+
+    @classmethod
+    def tearDownClass(cls):
+        asyncio.set_event_loop_policy(None)
+
     def setUp(self):
         super().setUp()
         self.loop = asyncio.new_event_loop()
@@ -290,9 +299,6 @@ def setUp(self):
         self.executor = self.executor_type()
         self.addCleanup(lambda: self.executor.shutdown())
 
-        if support.maybe_get_event_loop_policy() is None:
-            self.addCleanup(lambda: asyncio.set_event_loop_policy(None))
-
     def tearDown(self):
         if not self.loop.is_closed():
             testasyncio_utils.run_briefly(self.loop)
