Styjun

i am trying to mock a request entity objcet for testing a RequestEntity.post method.

 RequestEntity<CustomerInfo> body = RequestEntity.post(new 
 URI(inquiryProperties.getEndCustomer()))

 .accept(MediaType.APPLICATION_JSON).body(customerInfo);

i want to mock this method using mockito and in "when " i want to return a dummy object for this.

this is my method i am trying to mock for the controller.

 private static final Logger log = LoggerFactory.getLogger(InquiryController.class);

@Autowired
private InquiryProperties inquiryProperties;

@Autowired
private InquiryService inquiryService;


@Autowired
RestTemplate restTemplate;

public static int count = 0;


@Bean
private RestTemplate getRestTemplate() 
 return new RestTemplate();






 public ResponseEntity<List<EndCustomerDTO>> endCustomer(@RequestBody CustomerInfo customerInfo)
 throws IOException, JSONException URISyntaxException e) 
 log.error("InquiryController.endCustomer()" + e.getMessage());
 

 log.info("### END InquiryController.endCustomer() ===>");

 if (null == endCustomerDTOs) 
 return new ResponseEntity<List<EndCustomerDTO>>(new ArrayList<EndCustomerDTO>(), HttpStatus.OK);
 
 return new ResponseEntity<List<EndCustomerDTO>>(endCustomerDTOs, HttpStatus.OK);

Sample with Mockito for mocking REST Template Exchange and Spying Response Entity

@RunWith(MockitoJUnitRunner.class)
public class CustomerTest 

 @Mock
 RestTemplate restTemplate;
 @Spy
 ResponseEntity responseEntity = mock(ResponseEntity.class);
 @Inject
 InquiryService inquiryService;

 @Test
 public void endCustomerTest() 
 EndCustomerDTO yourEndCustomerDTO= new EndCustomerDTO();
 //define the entity you want the exchange to return
 ResponseEntity<List<EndCustomerDTO >> yourEndCustomerDTOEntity = new ResponseEntity<List<EndCustomerDTO >>(HttpStatus.ACCEPTED);
 Mockito.when(restTemplate.exchange(
 Matchers.eq("/urlPattern/urlPath"),
 Matchers.eq(HttpMethod.POST),
 Matchers.<HttpEntity<List<EndCustomerDTO >>>any(),
 Matchers.<ParameterizedTypeReference<List<EndCustomerDTO >>>any())
 ).thenReturn(yourEndCustomerDTOEntity);
 //service call to get the end customers
 List<EndCustomerDTO > result = inquiryService.getEndCustomers();
 //asserting by comparing expected and actual value
 Assert.assertEquals(yourEndCustomerDTOEntity , result .get(0));