java - 使用 Mockito 在客户端测试 POST 请求
问题描述
我想测试应该向“服务器”发送发布请求的发布方法(所以我想模拟来自服务器的响应并检查响应)。另外,我想测试响应在正文中是否包含 http 状态 OK。问题:我应该如何使用 mockito 来做到这一点?
我在客户端(客户端)中的发布方法:
public class Client{
public static void sendUser(){
String url = "http://localhost:8080/user/add";
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.setContentType(MediaType.APPLICATION_JSON);
requestHeaders.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
User test = new User();
test.setName("test");
test.setEmail("a@hotmail.com");
test.setScore(205);
RestTemplate restTemplate = new RestTemplate();
HttpEntity<User> request = new HttpEntity<>(test);
ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST, request, String.class);
if(response.getStatusCode() == HttpStatus.OK){
System.out.println("user response: OK");
}
}
}
我的控制器在另一个模块(服务器端):
@RestController
@RequestMapping("/user")
public class UserController
{
@Autowired
private UserRepository userRepository;
@PostMapping("/add")
public ResponseEntity addUserToDb(@RequestBody User user) throws Exception
{
userRepository.save(user);
return ResponseEntity.ok(HttpStatus.OK);
}
测试:
@RunWith(SpringRunner.class)
@ActiveProfiles("test")
@SpringBootTest(classes = Client.class)
@AutoConfigureMockMvc
public class ClientTest
{
private MockRestServiceServer mockServer;
@Autowired
private RestTemplate restTemplate;
@Autowired
private MockMvc mockMvc;
@Before
public void configureRestMVC()
{
mockServer =
MockRestServiceServer.createServer(restTemplate);
}
@Test
public void testRquestUserAddObject() throws Exception
{
User user = new User("test", "mail", 2255);
Gson gson = new Gson();
String json = gson.toJson(user );
mockServer.expect(once(), requestTo("http://localhost:8080/user/add")).andRespond(withSuccess());
this.mockMvc.perform(post("http://localhost:8080/user/add")
.content(json)
.contentType(MediaType.APPLICATION_JSON))
.andDo(print()).andExpect(status().isOk())
.andExpect(content().json(json));
}
}
现在我收到了这个错误:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'ClientTest': Unsatisfied dependency expressed through field 'restTemplate'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.web.client.RestTemplate' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
解决方案
根据您的 Client 类,建议进行以下更改,以使其更好地可测试:
// class
public class Client {
/*** restTemplate unique instance for every unique HTTP server. ***/
@Autowired
RestTemplate restTemplate;
public ResponseEntity<String> sendUser() {
String url = "http://localhost:8080/user/add";
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.setContentType(MediaType.APPLICATION_JSON);
requestHeaders.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
User test = new User();
test.setName("test");
test.setEmail("a@hotmail.com");
test.setScore(205);
HttpEntity<User> request = new HttpEntity<>(test);
ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST, request, String.class);
if(response.getStatusCode() == HttpStatus.OK){
System.out.println("user response: OK");
}
return response;
}
}
然后在上面我们将 Junit 设置为:
@RunWith(MockitoJUnitRunner.class)
public class ClientTest {
private String RESULT = "Assert result";
@Mock
private RestTemplate restTemplate;
@InjectMocks
private Client client;
/**
* any setting needed before load of test class
*/
@Before
public void setUp() {
// not needed as of now
}
// testing an exception scenario
@Test(expected = RestClientException.class)
public void testSendUserForExceptionScenario() throws RestClientException {
doThrow(RestClientException.class).when(restTemplate)
.exchange(anyString(), any(HttpMethod.class), any(HttpEntity.class), any(Class.class));
// expect RestClientException
client.sendUser();
}
@Test
public void testSendUserForValidScenario() throws RestClientException {
// creating expected response
User user= new User("name", "mail", 6609);
Gson gson = new Gson();
String json = gson.toJson(user);
doReturn(new ResponseEntity<String>(json, HttpStatus.OK)).when(restTemplate)
.exchange(anyString(), any(HttpMethod.class), any(HttpEntity.class), any(Class.class));
// expect proper response
ResponseEntity<String> response =
(ResponseEntity<String>) client.sendUser();
assertEquals(this.RESULT, HttpStatus.OK, response.getStatusCode());
}
}
基本上在您的sendResponse()
功能中,我们正在执行以下操作:
// we are getting URL , creating requestHeader
// finally creating HttpEntity<User> request
// and then passing them restTemplate.exchange
// and then restTemplate is doing its job to make a HTPP connection and getresponse...
// and then we are prinnting the response... somestuff
因此,在其相应的测试中,我们还应该只测试函数正在做什么,因为连接正在被处理restTemplate
并且你没有覆盖任何工作,restTemplate
所以我们不应该做任何事情......而只是测试我们的代码/逻辑。
最后,确保导入看起来像:
可以肯定的是,进口将是这样的:
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;
希望这可以帮助。
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