bpo-32327: Convert asyncio functions documented as coroutines to coroutines. (#4872)

Lib/test/test_asyncio/test_tasks.py

@@ -2545,19 +2545,26 @@ class RunCoroutineThreadsafeTests(test_utils.TestCase):
     def test_run_coroutine_threadsafe_task_factory_exception(self):
         """Test coroutine submission from a tread to an event loop
         when the task factory raise an exception."""
-        # Schedule the target
-        future = self.loop.run_in_executor(
-            None, lambda: self.target(advance_coro=True))
-        # Set corrupted task factory
-        self.loop.set_task_factory(lambda loop, coro: wrong_name)
+
+        def task_factory(loop, coro):
+            raise NameError
+
+        run = self.loop.create_task(
+            self.loop.run_in_executor(
+                None, lambda: self.target(advance_coro=True)))
+
         # Set exception handler
         callback = test_utils.MockCallback()
         self.loop.set_exception_handler(callback)
+
+        # Set corrupted task factory
+        self.loop.set_task_factory(task_factory)
+
         # Run event loop
         with self.assertRaises(NameError) as exc_context:
-            self.loop.run_until_complete(future)
+            self.loop.run_until_complete(run)
+
         # Check exceptions
-        self.assertIn('wrong_name', exc_context.exception.args[0])
         self.assertEqual(len(callback.call_args_list), 1)
         (loop, context), kwargs = callback.call_args
         self.assertEqual(context['exception'], exc_context.exception)