在模拟void方法时获取UnfinishedStubbingException

Question

@Mock
private TestService service;

@Mock
private DatabaseService mockDatabase;

@Before
public void setUpMock() throws Exception {

    LOGGER.info("########### Moke setUp started ###########");

    conn = Mockito.mock(Connection.class);
    MockitoAnnotations.initMocks(this);

    LOGGER.info("########### Moke setUp completed ###########");
}


@Test
public void testSuccess() {
    try {
        
        when(mockDatabase.getDBConnection()).thenReturn(conn);
        Mockito.doNothing().when(service).deleteKeyInfo(mockDatabase.getDBConnection(), userBn, 1, "1");
    } catch (Exception e) {
        fail("### testDeviceIdNull ### Failed with following error: " + getStackTrace(e));
    }
}

java.lang.AssertionError: ### Failed with following error: org.mockito.exceptions.misusing.UnfinishedStubbingException: 
Unfinished stubbing detected here:


E.g. thenReturn() may be missing.
Examples of correct stubbing:
    when(mock.isOk()).thenReturn(true);
    when(mock.isOk()).thenThrow(exception);
    doThrow(exception).when(mock).someVoidMethod();
Hints:
 1. missing thenReturn()
 2. you are trying to stub a final method, which is not supported
 3. you are stubbing the behaviour of another mock inside before 'thenReturn' instruction is completed

public void deleteKeyInfo(Connection conn, UserBn userBn, Integer smId, String dId) throws Exception {
    // Deleting key
        
}

Answer 1

你在嘲笑中嵌套嘲笑。在完成对服务的模拟之前，调用getDBConnection（）进行一些模拟。

Mockito不喜欢你这么做。

替换：

try {
        
        when(mockDatabase.getDBConnection()).thenReturn(conn);
        Mockito.doNothing().when(service).deleteKeyInfo(mockDatabase.getDBConnection(), userBn, 1, "1");
    }

try {
        
        when(mockDatabase.getDBConnection()).thenReturn(conn);
        some_variable_name =  mockDatabase.getDBConnection();         
        Mockito.doNothing().when(service).deleteKeyInfo(some_variable_name, userBn, 1, "1");
    }