Spock Testing Framework with Spring Boot to test REST Controller - spring-boot

Question

I have written rest api using spring boot this is controller code
#RestController
public class ApiController {
#Autowired
private ApiService apiService;
#PostMapping(path = "/user", consumes = {MediaType.APPLICATION_JSON_VALUE},
produces = {MediaType.APPLICATION_JSON_VALUE})
#LogTransaction
public ResponseEntity<String> user(HttpServletRequest request) {
//apiService.getUser() method call database so i need to mock it
USer user = apiService.getUser(request);
return ResponseEntity.ok().contentType(MediaType.APPLICATION_JSON).body(user);
}
}
This api is working fine and i have written test using spock framework in groovy
#SpringBootTest
class ApiControllerTest extends Specification {
#Autowired
private ApiController apiController;
#Autowired
private ApiService apiService;
#Autowired
MockMvc mockMvc
def "User api"() {
given:
def User user = new User()
apiService.getUser(_) >> user
when:
def result = mockMvc.perform(MockMvcRequestBuilders
.post("/user")
.contentType(MediaType.APPLICATION_JSON)
.content("""
{
"username":"demo",
"password":"demo"
}
"""))
.andReturn()
then:
assert result.response.status == HttpStatus.OK.value()
}
This is working fine also. Method apiService.getUser(request) call database . I want to mock it . But it is calling each time to database. So am trying to mock apiService.getUser(request) using #Autowired here but it is not working for me and this method execute each time and call to database. Can anyone share the way to mock apiService.getUser(request) method of controller .

Answer 1

You can partially mock spring beans by annotating them with #SpringSpy.
So, in your case, all you have to do it replace #Autowired with #SpringSpy:
#SpringSpy
private ApiService apiService;
and it should work.

Answer 2

you can use a exclude for datasources like
#SpringBootTest
#EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class})
#AutoConfigureMockMvc
public class Class1Test{
#Autowired
private MockMvc mockMvc;
#MockBean
private RestTemplate restTemplate;
#MockBean
private IYourRepository repository;
#Autowired
private SecurityJwtSettings securityJwtSettings;
and with mockito you can mock a request to database:
Mockito.doAnswer(x->{
YourEntity entityToSave = x.getArgument(0);
entityToSave.setCreatedAt(LocalDateTime.now());
Assert.assertEquals("tester.admin.01",entityToSave.getAuthorizedBy());
Assert.assertEquals("tester.01", entityToSave.getRequestedBy());
return entityToSave;
}).when(repository).save(Mockito.any(YourEntity.class));