java - 使用 JUnit 比较 2 个对象

Question

我有一个想要测试的服务:

public class DepartmentServiceImpl implements DepartmentService {

    @Autowired
    private DepartmentDao departmentDao;
    //... other functions 

    @Override
    public Department getDepartment(int depid) {
        return departmentDao.getDepartment(depid);
    }
}

这是我的测试类:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:sdnext-servlet.xml")
public class TestDepartmentDetails {

    Department department  = new Department();
    DepartmentServiceImpl service = new DepartmentServiceImpl();

    @Autowired
    private DepartmentDao myDao;


    @Test
    public void testGetDepartment(){
        assertEquals("lalalalalalala", service.getDepartment(98).getDepName());
    }

为什么它会失败并抛出 NullPointerException？还有其他解决办法吗？

注意:这是一个使用 Spring 和 Hibernate 的应用程序。

Answer 1

试试这个方法

 @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = "classpath:sdnext-servlet.xml")
    public class TestDepartmentDetails {
        @Autowired
        DepartmentService   service;
        @Test
        public void testGetDepartment(){
            assertEquals("lalalalalalala", service.getDepartment(98).getDepName());
        }