I am using Junit4 and Mockito for test cases, in the following code dbprop.getProperty("config")
is throwing a NullPointerException
because dbProp is null. Please help me out why it was not mocked?
public abstract class BaseClass {
@Autowired
protected DBproperties dbprop;
}
public class SampleClass extends BaseClass {
@Autowired
private OrderService orderService;
valdiateOrder(String input) {
String config = dbprop.getProperty("config");
}
}
public class TestSampleClass {
@InjectMocks
SampleClass sampleClass;
@Mock
private OrderService orderService;
@Test
public void testValidateOrder() {
DBproperties dbprop = mock(DBproperties .class);
when(dbprop.getProperty("config")).thenReturn("xxxx");
assertNotNull(SampleClass.valdiateOrder("xxx"));
}
}
Your dbprop
mock has not been injected into sampleClass
, you need to add:
@Mock
private DBproperties dbprop;
Then remove the dbprop
mock creation from your test method:
@Test
public void testValidateOrder() {
// DBproperties dbprop = mock(DBproperties .class); <-- removed
when(dbprop.getProperty("config")).thenReturn("xxxx");
assertNotNull(SampleClass.valdiateOrder("xxx"));
}
Next, to ensure mocks are injected when using the @InjectMocks
annotations you need to either add the following runner:
@RunWith(MockitoJUnitRunner.class)
public class TestSampleClass {
...
Or call the following in a @Before
method:
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
}
See the MockitoAnnotations and MockitoJUnitRunner JavaDocs for more information on the two approaches.
You can annotate your Object with @Mock, so its look like this
@Mock DBproperties dbProperties;@Before public void init(){ MockitoAnnotations.initMocks(this); }
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.