importunittestimportasyncioclassDemoTestCase1(unittest.IsolatedAsyncioTestCase):defsetUp(self):self.loop=asyncio.get_event_loop_policy().get_event_loop()asyncdeftest_demo(self):print("hello!")classDemoTestCase2(unittest.IsolatedAsyncioTestCase):defsetUp(self):self.loop=asyncio.get_event_loop_policy().get_event_loop()asyncdeftest_demo(self):print("hello!")if__name__=="__main__":unittest.main()

 graingert@conscientious  testing310  ~/projects  python3.10 foo.py hello!.hello!.----------------------------------------------------------------------Ran 2 tests in 0.002sOK

 graingert@conscientious  testing310  ~/projects  python3.11 foo.py hello!.E======================================================================ERROR: test_demo (__main__.DemoTestCase2.test_demo)----------------------------------------------------------------------Traceback (most recent call last):  File "/usr/lib/python3.11/unittest/async_case.py", line 82, in _callSetUp    self._asyncioTestContext.run(self.setUp)  File "/home/graingert/projects/foo.py", line 14, in setUp    self.loop = asyncio.get_event_loop_policy().get_event_loop()                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/usr/lib/python3.11/asyncio/events.py", line 677, in get_event_loop    raise RuntimeError('There is no current event loop in thread %r.'RuntimeError: There is no current event loop in thread 'MainThread'.----------------------------------------------------------------------Ran 2 tests in 0.002sFAILED (errors=1)