[英]Mockito NullPointerException
我按照@hoaz的建議。 但是,我得到了nullpointer異常
@RunWith(MockitoJUnitRunner.class)
public class GeneralConfigServiceImplTest {
@InjectMocks private GeneralConfigService generalConfigService;
@Mock private SomeDao someDao;
@Mock private ExternalDependencyClass externalDependencyObject
@Test
public void testAddGeneralConfigCallDAOSuccess() {
when(someDao.findMe(any(String.Class))).thenReturn(new ArrayList<String>(Arrays.asList("1234")));
//println works here, I am able to get collection from my mocked DAO
// Calling the actual service function
generalConfigService.process(externalDependencyObject)
}
}
在我的代碼中它是這樣的:
import com.xyz.ExternalDependencyClass;
public class GeneralConfigService{
private SomeDao someDao;
public void process(ExternalDependencyClass externalDependencyObject){
// function using Mockito
Collection<String> result = someDao.findMe(externalDependencyObject.getId.toString())
}
}
我也注意到DAO是null所以我做了這個(只是提到,我做了下面的步驟嘗試,我知道springUnit和Mockito或xyz之間的區別):
@Autowired
private SomeDao someDao;
@Test public void testAddGeneralConfigCallDAOSuccess() { /* This does not work externalDependencyObject.setId(new ExternalKey("pk_1")); // verify statement works and I thought that the class in test when call the getId // it will be able to get the ExternalKey object //verify(externalDependencyObject.setId(new ExternalKey("pk_1"))); */ // This works when(externalDependencyObject.getId()).thenReturn(new ExternalKey("pk_1")); when(someDao.findMe(any(String.Class))).thenReturn(new ArrayList<String>(Arrays.asList("1234"))); .... // Calling the actual service function generalConfigService.process(externalDependencyObject) }
您還沒有在externalDependencyObject
中getId
的行為,因此它返回null
並在該null
上調用toString()
時為您提供NPE。
你需要一個when(externalDependencyObject.getId()).then...
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