在spring boot junit中模拟Resttemplate失败

@RunWith(SpringRunner.class)
@SpringBootTest
public class MyRestClientTest {

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private MyRestClient myRestClient;

    @Autowired
    private MockRestServiceServer mockServer;

    @Before
    public void setUp() {
        mockServer = MockRestServiceServer.createServer(restTemplate);
    }

    @Test
    public void testGetResource_Failure() {
        // 模拟RestTemplate请求失败的情况
        mockServer.expect(requestTo("/api/resource"))
                .andRespond(withServerError());

        // 调用MyRestClient中的方法
        ResponseEntity<String> response = myRestClient.getResource();

        // 验证返回的状态码是否为500
        assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, response.getStatusCode());
    }
}