我遵循了@hoaz 的建议。但是，我遇到了空指针异常
@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)
}
}
在我的代码中是这样的：
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())
}
}
我还注意到 DAO 为空，所以我这样做了（顺便提一下，我做了以下步骤来尝试，我知道 springUnit 和 Mockito 或 xyz 之间的区别）：
@Autowired
private SomeDao someDao;
@John B solution solved my problem. However I would like to mention what did not work for me. This is my updated unit test
@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)
}
Referenced this question in :
如何使用 Mockito 模拟外部方法调用
如何使用 Mockito 在模拟对象上设置属性？
