PowerMock whenSpring 组件构造函数出现新问题

Question

我有如下 Spring 服务：

@Service
public class SendWithUsService
{
    private SendWithUs mailAPI;

    public SendWithUsService()
    {
        this.mailAPI = new SendWithUs();
    }

    public void sendEmailEvent(Dto data)
    {
        try
        {
            SendWithUsSendRequest request = new SendWithUsSendRequest()...;
            mailAPI.send(request);
        }
        catch (Exception e)
        {
           ...
        }
    }
}

我的测试代码如下所示：

@RunWith(PowerMockRunner.class)
@PowerMockIgnore({"javax.net.ssl.*"})
@PrepareForTest(SendWithUsService.class)
public class SendWithUsServiceTest
{
    @InjectMocks
    private SendWithUsService sendWithUsService;

    @Mock
    private SendWithUs mailAPI;

    @Test
    public void sendEmailEvent_successfully() throws Exception
    {
        whenNew(SendWithUs.class).withAnyArguments().thenReturn(mailAPI);
        Dto emailData = ...;
        sendWithUsService.sendEmailEvent(emailData);
        ...
    }
}

在这里，PowerMock whenNew 方法不起作用。但是当我像在 sendEmailEvent 方法内部那样在构造函数外部调用它时，它会被触发。

有办法处理吗？

作品：

public void sendEmailEvent(Dto data)
{
   this.mailAPI = new SendWithUs();
    ...
}

无效：

 public SendWithUsService()
    {
        this.mailAPI = new SendWithUs();
    }

Answer 1

我是这样解决的：

@RunWith(PowerMockRunner.class)
@PowerMockIgnore({"javax.net.ssl.*"})
@PrepareForTest(SendWithUsService.class)
public class SendWithUsServiceTest
{
    @InjectMocks
    private SendWithUsService sendWithUsService;

    @Mock
    private SendWithUs mailAPI;

    @Before
    public void setUp() throws Exception {   
      whenNew(SendWithUs.class).withAnyArguments().thenReturn(mailAPI);
        MockitoAnnotations.initMocks(this);
    }

    @Test
    public void sendEmailEvent_successfully() throws Exception
    {
        Dto emailData = ...;
        sendWithUsService.sendEmailEvent(emailData);
        ...
    }
}