How to disable cache during django tests

usually we don't want cache working while on tests
I do like this, in settings.py :

 CACHES = {
     'default': {
         'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
         'LOCATION': 'unique-snowflake',
     },
 }
     
 TEST_CACHES = {
     'default': {
         'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
     }
 }
 

then in the tests, being in before a class or function, do this :

 @override_settings(CACHES=settings.TEST_CACHES)
 def function(........):
     do something