>> u = Factory(:user)
ActiveRecord::StatementInvalid: Mysql::Error: Cannot add or update a child row: a foreign key constraint fails (`openmrs_development/users`, CONSTRAINT `user_creator` FOREIGN KEY (`creator`) REFERENCES `users` (`user_id`)): INSERT INTO `users` (`salt`, `creator`, `date_created`, `voided`, `secret_answer`, `changed_by`, `secret_question`, `system_id`, `username`, `void_reason`, `date_changed`, `voided_by`, `first_name`, `date_voided`, `last_name`, `password`, `middle_name`) VALUES('ied6FQj8o8', 1, '2009-03-10 20:03:19', 0, NULL, NULL, NULL, 'Baobab Admin', 'mike1', NULL, '2009-03-10 20:03:19', NULL, 'Mike1', '2009-03-10 20:03:19', 'McKay1', '750bda64556e9178987072b329f4f8a53c37cb9d', NULL)