def METHOD_NAME(self, fn):
    eav = {":id": "pk", ":sk": "19"}
    with pytest.raises(DynamodbException) as exc:
        parse_expression(
            expression_attribute_values=eav,
            key_condition_expression=f"job_id = :id AND {fn}(start_date,:sk)",
            schema=self.schema,
            expression_attribute_names=dict(),
        )
    assert (
        exc.value.message
        == f"Invalid KeyConditionExpression: Invalid function name; function: {fn}"
    )