serializers_test.py 文件源码

def assert_required_fields(self, field_names, parent_getter, field_parent_getter):
        """
        Helper function to assert required fields
        """
        for key in field_names:
            field = field_parent_getter(ProfileFilledOutSerializer().fields)[key]
            is_generated = isinstance(field, (ListSerializer, SerializerMethodField, ReadOnlyField))
            is_skippable = (field.read_only or field.allow_null or field.allow_blank)
            # skip fields that are skippable, generated, read only, or that tie
            #  to other serializers which are tested elsewhere.
            if is_generated or is_skippable:
                continue

            clone = deepcopy(self.data)
            clone["image"] = self.profile.image
            clone["image_small"] = self.profile.image_small
            clone["image_medium"] = self.profile.image_medium
            parent_getter(clone)[key] = None
            with self.assertRaises(ValidationError) as ex:
                ProfileFilledOutSerializer(data=clone).is_valid(raise_exception=True)
            assert parent_getter(ex.exception.args[0]) == {key: ['This field may not be null.']}

            if isinstance(field, CharField):
                # test blank string too
                parent_getter(clone)[key] = ""
                with self.assertRaises(ValidationError) as ex:
                    ProfileFilledOutSerializer(data=clone).is_valid(raise_exception=True)
                assert parent_getter(ex.exception.args[0]) == {key: ['This field may not be blank.']}