I have managed to solve a problem with Spring-boot aop and mocking test services using an approach detailed in Spring AOP Aspect not working using Mockito. This thread is over 6 years old.
Are there any newer approaches out there?
EDIT adding more detail from my specific implementation.
Controller:
@RestController
public class EndpointController {
private EndpointService endpointService;
@Autowired
public EndpointController(EndpointService endpointService) {
this.endpointService = endpointService;
}
@PostMapping(path = "/endpoint", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
private @ResponseBody EndpointResponse doSomething(/* ... */, @RequestBody SomeObject someObject) throws Exception {
return endpointService.doSomething(someObject);
}
}
In my test class, I have:
@RunWith(SpringRunner.class)
public class EndpointControllerTest {
@Autowired
private MockMvc mockMvc;
@Test
public void shouldBeSuccessfulAccessingTheEndpoint() throws Exception {
SomeObject someObject = new SomeObject(/* values */);
ObjectMapper mapper = new ObjectMapper();
String payload = mapper.writeValueAsString(someObject);
mockMvc.perform(post("/endpoint").contentType(MediaType.APPLICTION_JSON).content(payload)).andExpect(status().isOK));
}
}
It fails and throws a NullPointerException. When debugging, the endpointService is always null.
Any ideas?
You can use the annotation @MockBean now. It's some sort of wrapped mockito in spring testing.
@RunWith(SpringRunner.class)
public class ExampleTests {
@MockBean
private ExampleService service;
@Autowired
private UserOfService userOfService;
@Test
public void testUserOfService() {
given(this.service.greet()).willReturn("Hello");
String actual = this.userOfService.makeUse();
assertEquals("Was: Hello", actual);
}
@Configuration
@Import(UserOfService.class) // A @Component injected with ExampleService
static class Config {
}
}