def METHOD_NAME():
    form_id = "73bfc6a5-c66e-4b17-be6d-45513511e1ef"
    reset_cache(form_id)
    with patch.object(XFormInstance.objects, "get_form", form_not_found):
        eq(get_user_id_from_form(form_id), None)
    with patch.object(XFormInstance.objects, "get_form", get_form):
        # null value should not be cached
        eq(get_user_id_from_form(form_id), USER_ID)