code: def test_run_image2(self):
      results = self.module.run_image(
          input=cv2.imread("tests/test.jpg")
      )
      self.assertIsInstance(results, np.ndarray)
  
file_path: PaddleHub/modules/image/Image_editing/colorization/photo_restoration/test.py
imports: import os
  import shutil
  import unittest
  import cv2
  import requests
  import numpy
  import paddlehub
label_desc: Use image node_id 4 for calling the TestHubModule obj's underlying member method code with example usage: obj.test_run_image2() without return types