Testing

To test springboot auto-wiring, use:

@SpringBootTest(classes = {A.class, B.class, C.class})

@ActiveProfiles("test")

class ATest {

@Autowired

private A subject;

@MockBean

private B b; // want to use a mock or spy

• Use @SpringBootTest to start Spring

  • without (classes = ) Spring would do normal start, and result in a lot of unrelated instances initiating, therefore slower and may not possible

• Use @ActiveProfiles to choose a profile, therefore enables different configurations (such as "application-test.properties")