Spring Boot Test with Mockito : #Validated annotation is being ignored during unit tests - spring-boot

Question

I'm using Spring Boot 2.1.1, JUnit 5, Mockito 2.23.4.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>2.23.4</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-junit-jupiter</artifactId>
<version>2.23.4</version>
<scope>test</scope>
</dependency>
Here's my controller :
#RestController
#Validated
public class AramaController {
#ResponseStatus(value = HttpStatus.OK)
#GetMapping("/arama")
public List<Arama> arama(#RequestParam #NotEmpty #Size(min = 4, max = 20) String query) {
return aramaService.arama(query);
}
}
This controller works as expected.
curl with no "query" parameter returns Bad Request 400 :
~$ curl http://localhost:8080/arama -v
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET /arama HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 400
< X-Content-Type-Options: nosniff
< X-XSS-Protection: 1; mode=block
< Cache-Control: no-cache, no-store, max-age=0, must-revalidate
< Pragma: no-cache
< Expires: 0
< X-Frame-Options: DENY
< Content-Length: 0
< Date: Wed, 12 Dec 2018 21:47:11 GMT
< Connection: close
<
* Closing connection 0
curl with "query=a" as parameter returns Bad Request 400 as well :
~$ curl http://localhost:8080/arama?query=a -v
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET /arama?query=a HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 400
< X-Content-Type-Options: nosniff
< X-XSS-Protection: 1; mode=block
< Cache-Control: no-cache, no-store, max-age=0, must-revalidate
< Pragma: no-cache
< Expires: 0
< X-Frame-Options: DENY
< Content-Type: application/json;charset=UTF-8
< Transfer-Encoding: chunked
< Date: Wed, 12 Dec 2018 21:47:33 GMT
< Connection: close
<
* Closing connection 0
{"message":"Input error","details":["size must be between 4 and 20"]}
This controller and validation works flawlessly when running on a server.
During unit tests the #Validated annotation doesn't seem to have any effect.
Here my test code :
#ExtendWith(MockitoExtension.class)
class AramaControllerTest {
#Mock
private AramaService aramaService;
#InjectMocks
private AramaController aramaController;
private MockMvc mockMvc;
#BeforeEach
private void setUp() {
mockMvc = MockMvcBuilders
.standaloneSetup(aramaCcontroller)
.setControllerAdvice(new RestResponseEntityExceptionHandler())
.build();
}
#Test
void aramaValidationError() throws Exception {
mockMvc
.perform(
get("/arama").param("query", "a")
)
.andExpect(status().isBadRequest());
verifyNoMoreInteractions(aramaService);
}
}
This test results in failure :
java.lang.AssertionError: Status expected:<400> but was:<200>
Expected :400
Actual :200
Since the #Valid annotations pass my other test cases, and they work without loading the Spring context, is there a way to make the #Validated annotation work as well with Mockito (again, without loading the Spring context) ?

Answer 1

I got the answer elsewhere and wanted to share :
Without starting up the context, you won't have #Validator getting
tested because validator instances are Spring beans. However, #Valid
will work as it is a JSR-303 standard.
As of now, what I can suggest is.
#SpringBootTest
#ExtendWith(SpringExtension.class)

Answer 2

maybe you can try using #WebMvcTest and add SpringExtension
#ExtendWith({SpringExtension.class, MockitoExtension.class})
#WebMvcTest(AramaController.class)
class AramaControllerTest {
#Mock
private AramaService aramaService;
#InjectMocks
private AramaController aramaController;
#Autowired
private MockMvc mockMvc;
#Test
void aramaValidationError() throws Exception {
mockMvc
.perform(
get("/arama").param("query", "a")
)
.andExpect(status().isBadRequest());
verifyNoMoreInteractions(aramaService);
}
}