@RunWith(MockitoJUnitRunner.class)
public class FeatureFlipperManagerTest {
@Autowired
RestTemplate restTemplate = new RestTemplate();
@Autowired
Service service = new Service();
MockRestServiceServer mockServer = MockRestServiceServer.createServer(restTemplate);
@Test
public void test() throws Exception {
mockServer.expect(requestTo(Mockito.anyString()))
.andRespond(withSuccess("{"enabled":true}", MediaType.APPLICATION_JSON));
boolean res = service.isEnabled("xxx");
mockServer.verify();
Assert.assertEquals(true, res);
}
}
I have MockRestServiceServer to mock restTemplete in a service. But it always fail. it shows the error as java.lang.AssertionError: Further request(s) expected
0 out of 1 were executed. Any one could let me know where I did not do it right.
The service itself will looks as this:
public class Service{
public boolean isEnabled(String xxx) {
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<String> response = restTemplate.getForEntity("someurl",String.class);
if(...)return true;
return false;
}
}
Answer
First of all, your Service class creates a new instance of RestTemplate on every request. I cannot stress enough how bad practice it is. Create a bean of type RestTemplate and inject it into your Service bean (it is most likely already created – depending on the Spring MVC version you are using).
Once you have it, then both RestTemplates: one in your Service bean and one injected into FeatureFlipperManagerTest will be the same and testing with MockRestServiceServer will be possible.
EDIT – to be more explicit:
Modify your Service class to:
@Component
public class Service {
private RestTemplate restTemplate;
@Autowired
public Service(RestTemplate restTemplate) {
this.restTemplate = restTemplate;
}
public boolean isEnabled(String xxx) {
ResponseEntity<String> response = restTemplate.getForEntity("someurl",String.class);
if(...)return true;
return false;
}
}
and your test class to:
@RunWith(MockitoJUnitRunner.class)
public class FeatureFlipperManagerTest {
@Autowired
RestTemplate restTemplate;
@Autowired
Service service;
MockRestServiceServer mockServer = MockRestServiceServer.createServer(restTemplate);
@Test
public void test() throws Exception {
mockServer.expect(requestTo(Mockito.anyString()))
.andRespond(withSuccess("{"enabled":true}", MediaType.APPLICATION_JSON));
boolean res = service.isEnabled("xxx");
mockServer.verify();
Assert.assertEquals(true, res);
}
}
If this fails with exception saying that there is no RestTemplate bean present then please paste info about version of Spring (Spring Boot?) you are using.