Description
Question
Spring Boot 1.4 has a number of fine features including @DataJpaTest annotation that automatically wakes up the classpath embedded database for the test purposes. As far I know, it won't work in conjuction with TestRestTemplate in bounds of the same class.
The following test won't work:
@RunWith(SpringRunner.class)
@SpringBootTest
@DataJpaTest
public class PersonControllerTest {
private Logger log = Logger.getLogger(getClass());
private Category category;
@Autowired
private TestRestTemplate restTemplate;
@Autowired
private TestEntityManager entityManager;
@Before
public void init() {
log.info("Initializing...");
category = entityManager.persist(new Category("Staff"));
}
@Test
public void personAddTest() throws Exception {
log.info("PersonAdd test starting...");
PersonRequest request = new PersonRequest("Jimmy");
ResponseEntity<String> response = restTemplate.postForEntity("/Person/Add", request, String.class);
assertEquals(HttpStatus.OK, response.getStatusCode());
log.info("PersonAdd test passed");
}
During startup of the test an exception will be thrown:
Unsatisfied dependency expressed through field 'restTemplate': No qualifying bean of type [org.springframework.boot.test.web.client.TestRestTemplate]
Then guessing to switch to the recommended mock based slice approach but it won't work there because the controller looks like this:
@RequestMapping(value="/Person/Add", method=RequestMethod.POST)
public ResponseEntity personAdd(@Valid @RequestBody PersonRequest personRequest, Errors errors)
personValidator.validate(personRequest, errors):
if (errors.hasErrors())
return new ResponseEntity(HttpStatus.BAD_REQUEST);
personService.add(personRequest);
return new ResponseEntity(HttpStatus.OK);
}
... it's easy to mock the personService as the documentation suggests but how to be with the errors object which is not mockable in this case? As far I know, there's no ways to mock it since it isn't class field or a returned value of a method.
So, I'm unable to test the code above using neither slice approach nor integration one since @DataJpaTest should not be used with a controller.
Is there a way to test the controller with such architecture using Spring Boot 1.4 testing features?