Test cheat sheet

gistfile1.txt

//@RunWith(SpringJUnit4ClassRunner.class) // for JUnit 4
//@ExtendWith(MockitoExtension.class) // for running with a Mockito runner. No Spring features
@ExtendWith(SpringExtension.class) // for running with a Spring runner. Loads Spring features (bean loading, etc)
@DisplayName("My test class name (JUnit 5)")
//@SpringBootTest // will load application context
public class MyTest {

	// Strategy for loading one specific bean
	// If not in a static inner class: needs to be imported on class with @Import
	@TestConfiguration
	static class NeededBeanConfig {
		@MockBean
		private OtherBean necessaryOtherBean;
		
		@Bean
		public NeededBean neededBean() {
			return new NeededBean(necessaryOtherBean);
		}
	}
	
	private BeanToMock beanToMock; // beans to be mocked 
	@InjectMocks
	private SystemUnderTest systemUnderTest; 
	@Autowired
	private NeededBean actualBean;
	
	@BeforeEach
	public void setup() {
		beanToMock = Mockito.mock(BeanToMock.class);
		systemUnderTest = new SystemUnderTest(beanToMock, actualBean);
	}
}