code: def test_face_detection1(self):
      results = self.module.face_detection(
          paths=["tests/test.jpg"], use_gpu=False, visualization=False
      )
      bbox = results[0]["data"][0]
  
      label = bbox["label"]
      confidence = bbox["confidence"]
      left = bbox["left"]
      right = bbox["right"]
      top = bbox["top"]
      bottom = bbox["bottom"]
  
      self.assertEqual(label, "NO MASK")
      self.assertTrue(confidence > 0.5)
      self.assertTrue(0 < left < 2000)
      self.assertTrue(0 < right < 2000)
      self.assertTrue(0 < top < 2000)
      self.assertTrue(0 < bottom < 2000)
  
file_path: PaddleHub/modules/image/face_detection/pyramidbox_lite_server_mask/test.py
imports: import os
  import shutil
  import unittest
  import cv2
  import requests
  import paddlehub
label_desc: Use image node_id 3 for calling the TestHubModule obj's underlying member method code with example usage: obj.test_face_detection1() without return types