Fix test_non_model_serializer

Author: Maxime Toussaint

tests/test_conditions.py

@@ -116,12 +116,11 @@ def test_dict_is_passed(self):
 
     def test_non_model_serializer(self):
         class PizzaSerializer(PrefetchingSerializerMixin, serializers.Serializer):
+            prefetch_related = ("toppings",)
+
             toppings = ToppingSerializer(many=True)
             label = serializers.CharField()
 
-            class Meta:
-                model = Pizza
-
         pizzas = Pizza.objects.all()
         serializer = PizzaSerializer(pizzas, many=True)