@Before public void setUp() { videoCapture = (VideoCaptureImpl) context.getBean(IVideoCapture.class); videoWriter = Mockito.mock(IVideoWriter.class); device = Mockito.mock(IDevice.class); threadPool = Mockito.mock(IThreadExecutor.class); videoCapture.setVideoWriter(videoWriter); videoCapture.setThreadExecutor(threadPool); MockitoAnnotations.initMocks(this); }