Java Junit：测试父子实体

我有一份实体菜单，有一家儿童关系餐厅。我将检查是否有餐厅提供菜单，菜单无法删除，因此我进行了以下Junit测试：

    Restaurant resto = new Restaurant(menu);
    restaurantService.save(resto);

            menuService.delete  (menu);

            menu = menuService.findByMenuId(menuName);

assertNotNull (menu);

但是我当然不能测试这个用例，因为我有一个异常：

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails 



public class Menu {

...


@OneToMany(mappedBy = "menu", 
               cascade = CascadeType.ALL, 
               orphanRemoval = true, fetch = FetchType.LAZY)
    @JsonIgnore
    private Set<Restaurants> restaurant = new HashSet<>();
...
}

---

在这种情况下，assert语句没有帮助。您需要使用“expected”来检查是否没有发生删除，是否抛出异常

@Test(expected=MySQLIntegrityConstraintViolationException.class)
public void testMenuDeletionFailure()    {
\\invoke the method you need to unit test, there is no need of assertion statements
}

---

试试这个..

你能给我们看看你的实体吗？

@Test(expected=MySQLIntegrityConstraintViolationException.class)
public void testMenuDeletionFailure()    {
\\invoke the method you need to unit test, there is no need of assertion statements
}