Cascade

[SpringBoot][Kotlin] org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing 에러

실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발 강의를 들으면 주문서비스 테스트를 작성하고, 실행했는데 에러를 만났다. 반가워~👋 에러메세지 org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : com.jpabook.jpashop.domain.Order.delivery -> com.jpabook.jpashop.domain.Delivery; nested exception is java.la..