async def METHOD_NAME(self):
    with open(
        abspath(
            "./tests/fixtures/images/Giunchedi%2C_Filippo_January_2015_01.jpg"
        ),
        "rb",
    ) as fixture:
        # ARRANGE
        self.engine.load(fixture.read(), None)
    cascade = "./thumbor/detectors/face_detector/haarcascade_frontalface_default.xml"
    self.context.config.FACE_DETECTOR_CASCADE_FILE = abspath(cascade)
    with patch.object(
        thumbor.detectors.BaseDetector, "verify_cv", lambda self: False
    ):
        if hasattr(FaceDetector, "cascade"):
            del FaceDetector.cascade
        # ACT
        await FaceDetector(self.context, 0, None).detect()
        # ASSERT
        detection_result = self.context.request.focal_points
        expect(detection_result).to_length(0)