我打电话有问题 deleteById 在@datajpatest中。从类似的问题中尝试了许多解决方案，但都无济于事。以下是实体：
实体：

@Setter
@Getter
@NoArgsConstructor
@Entity
@DynamicUpdate
@Table(name = "project")
public class Project{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column
    private String name;

    @Column
    private String description;

    @Column
    @CreationTimestamp
    private LocalDateTime created;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "parent_id")
    private Project parent;

    @OneToMany(mappedBy = "parent", cascade = CascadeType.REMOVE, orphanRemoval = true)
    private Set<Project> subProjects = new HashSet<>();
}

J储蓄

@Repository
public interface ProjectRepository extends JpaRepository<Project, Long>{
}

测试

@Test
    void givenParentAndChilds_whenDeleteParent_thenDeleteChilds() {
        // Given
        Project parent = Project.builder().name("parent").build();
        parent = projectRepository.save(parent);

        Project child1 = Project.builder().name("child1").build();
        child1.setParent(parent);
        child1 = projectRepository.save(child1);

        Project child2 = Project.builder().name("child2").build();
        child2.setParent(parent);
        child2 = projectRepository.save(child2);

        Project child3 = Project.builder().name("child3").build();
        child3.setParent(parent);
        child3 = projectRepository.save(child3);

        assertTrue(projectRepository.findById(parent.getId()).isPresent());
        assertTrue(projectRepository.findById(child1.getId()).isPresent());
        assertTrue(projectRepository.findById(child2.getId()).isPresent());
        assertTrue(projectRepository.findById(child3.getId()).isPresent());

        // When
        projectRepository.deleteById(parent.getId());

        // Then
        assertFalse(projectRepository.findById(parent.getId()).isPresent());
        assertFalse(projectRepository.findById(child1.getId()).isPresent()); // <-- these assertions fails
        assertFalse(projectRepository.findById(child2.getId()).isPresent());
        assertFalse(projectRepository.findById(child3.getId()).isPresent());
    }

在测试期间，子项不会通过级联删除。我试过以下方法：
添加 orphanRemoval = true 至 @OneToMany 中的注解 Project 实体
添加 deleteById 与 @Transactional 在 ProjectRepository 添加 @Transactional 作为测试注解
以上都不起作用，childs不能删除。在spring引导日志中 DELETE 查询也丢失。我的考试怎么了？