Spring WebTestClient bindToController 用法

Question

我正在尝试弄清楚如何使用 WebTestClient.bindToController()。

我有以下两个课程：

• 控制器
• 服务

Controller.methodx() 调用 Service.methody()。 Service.methody() 调用外部 REST POST 端点。

如何使用 WebTestClient.bindToController() 来测试这个控制器？我在网上找不到很多使用信息。

控制器：

@RestController
@RequestMapping(produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public class CustomerController {

@Autowired
private CustomerService customerService;


@PostMapping(value="/customer", consumes= MediaType.APPLICATION_JSON_UTF8_VALUE)
public Mono<Customer> saveCustomer(@RequestBody Customer customer){
    return this.customerService.saveCustomer(customer);
}

服务：

@Service
public class CustomerService implements ICustomerService {


@Autowired  
private WebClient webClient;      


@Override
public Mono<Customer> storeMessage(Customer cust) {

     Mono<Customer> resp = this.webClient.post() 
              .uri("/postdata")
              .body(BodyInserters.fromObject(customer))
              .exchange();

    return resp
}

}

配置：

@Configuration
public class ProdConfig {


@Bean
public ICustomerService getCustomerService() {
    return new CustomerService();
}

@Bean
public WebClient getWebClient() {

    return WebClient.builder()
              .baseUrl("baseurl")
              .defaultHeader(HttpHeaders.CONTENT_TYPE, MIME_TYPE)
              .defaultHeader(HttpHeaders.USER_AGENT, USER_AGENT)
              .build();
}

}

测试类：

@ActiveProfiles("test")
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
@ContextConfiguration(classes = TestConfig.class)
@AutoConfigureMockMvc

public class CustomerControllerTest {

 @MockBean
 private CustomerService customerservice;

 private WebTestClient testClient;

 @Test
 public void testSaveCustomer() throws Exception {       
    testClient= WebTestClient.bindToController(new CustomerController(customerService)).build();

    testClient.post().uri("/customer").body(BodyInserters.fromObject(customer))
            .exchange()
            .expectStatus().is2xxSuccessful();
 }
}

测试配置：

@Profile("test")
@Configuration
@EnableAutoConfiguration
public class TestConfig {


@Bean
public WebClient getWebClient() {
    return WebClient.builder()
              .baseUrl("baseurl")
              .defaultHeader(HttpHeaders.CONTENT_TYPE, MIME_TYPE)
              .defaultHeader(HttpHeaders.USER_AGENT, USER_AGENT)
              .build();
}

}

运行测试类时出错：

org.springframework.test.context.TestContextManager[0;39m: Caught exception while invoking 'afterTestMethod' callback on 
TestExecutionListener [org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener@61df66b6] for test method 
[public void CustomerControllerTest.testSaveCustomer()] and test instance 
[CustomerControllerTest@22da200e]
java.lang.NoSuchMethodError: org.mockito.MockingDetails.getMockCreationSettings()Lorg/mockito/mock/MockCreationSettings;
    at org.springframework.boot.test.mock.mockito.MockReset.get(MockReset.java:107)

Answer 1

WebTestClient 在内部使用 WebClient 来执行请求。 我们可以简单地将控制器绑定到 WebTestClient 来处理请求映射，而不是提供基本 url 来发出请求。

CustomerController.java

@RestController
@RequestMapping(produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public class CustomerController {

    private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

    private CustomerService customerService;

    public CustomerController( CustomerService customerService) {
        this.customerService = customerService;
    }

    @PostMapping(value="/customer", consumes= MediaType.APPLICATION_JSON_UTF8_VALUE)
    public Mono<Customer> saveCustomer(@RequestBody Customer customer){
        return this.customerService.saveCustomer(customer);
    }

CustomerControllerTest.java

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


    private WebTestClient testClient;

    @MockBean
    private CustomerService customerService;


    @Before
    public void setup() {
        //mock service here
    }



    @Test
    public void  testSaveCustomer() throws Exception {

        Customer customer = new Customer(1L, "test", CustomerGender.MALE);
        testClient= WebTestClient.bindToController(new CustomerController(customerService)).build();

        testClient.post().uri("/customer").body(BodyInserters.fromObject(customer))
                .exchange()
                .expectStatus().is2xxSuccessful();


    }

}