def test_filterFrame_black_white(self):
     img = cv2.imread("Testing.jpg")
     img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
     img = cv2.cvtColor(img, cv2.cv2.COLOR_GRAY2BGR)
     filter1 = FilterFrame(master=testFrame())
     filter1._FilterFrame__black_white()
     self.assertTrue(img.all() == filter1.filtered_image.all())