弹簧单元测试中的静态场注入

Question

我在我的应用程序中使用JUnit4，我试图测试UserService，目前的测试用例很简单：

Create a user named 'admin' and save it to the database.

The other test case will rely on this user.

所以我使用BeforeClass来插入记录，但是我必须使用UserService来保存用户，但是spring不支持注入静态字段。

当我尝试手动创建UserService时，我发现自己必须填写依赖项，我想知道是否有替代方案？或者我如何使用JUnit有什么问题？

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring/application-config.xml"})
public class UserServiceTest {
    @Rule
    public final ExpectedException exception = ExpectedException.none();

    @Autowired
    private UserService userService;

    //@Autowired  // sprint does not suport this
    private static UserService us;
    private static User u;

    @BeforeClass
    public static void before() {
        us = new UserServiceImpl(); // this UserService instance can not be used, since I have to fill the dependencies manually

        us.clear();
        u = new User();
        u.setUsername("admin");
        u.setPassword("pass");
        us.save(u);

    }

    @AfterClass
    public static void after() {
        userService.delete(u.getId());
    }


    @Test
    public void testQuery() {
        List<User> list = userService.find();
        assertEquals(1, list.size());
    }

    @Test
    public void testChangePassword() {
        userService.changePassword(u.getId(), u.getPassword(), "newpass");
        assertEquals("newpass", userService.findOne(u.getId()).getPassword());


        exception.expect(ResourceNotFoundException.class);
        userService.changePassword("1", "32", "ss");

        exception.expect(ResourceNotFoundException.class);
        userService.changePassword(u.getId(), "32", "ss");
    }
}