!112 !94: tests commons modules that contains most of the logic + zoneinfo (#113)

!112

Co-authored-by: bkfox <thomas bkfox net>
Reviewed-on: rc/aircox#113

aircox/admin/filters.py

@@ -13,7 +13,7 @@ class DateFieldFilter(filters.FieldListFilter):
     input_type = "date"
 
     def __init__(self, field, request, params, model, model_admin, field_path):
-        self.field_generic = "%s__" % field_path
+        self.field_generic = f"{field_path}__"
         self.date_params = {
             k: v for k, v in params.items() if k.startswith(self.field_generic)
         }