====================================== How to test with different event loops ====================================== Parametrizing the *event_loop_policy* fixture parametrizes all async tests. The following example causes all async tests to run multiple times, once for each event loop in the fixture parameters: .. include:: multiple_loops_example.py :code: python You may choose to limit the scope of the fixture to *package,* *module,* or *class,* if you only want a subset of your tests to run with different event loops.