code: def test_should_open_image(self):
      df = self.open_instance(pd.DataFrame([self.image_file_path]))
      actual_img = df["data"].to_numpy()[0]
  
      expected_img = np.array(np.ones((3, 3, 3)), dtype=np.uint8)
      expected_img[0] -= 1
      expected_img[2] += 1
  
      self.assertEqual(actual_img.shape, expected_img.shape)
      self.assertEqual(np.sum(actual_img[0]), np.sum(expected_img[0]))
      self.assertEqual(np.sum(actual_img[1]), np.sum(expected_img[1]))
      self.assertEqual(np.sum(actual_img[2]), np.sum(expected_img[2]))
  
file_path: evadb/test/integration_tests/long/functions/ndarray/test_open.py
imports: import unittest
  from test.util import create_sample_image
  import numpy
  import pandas
  import pytest
  from mock import patch
  from evadb.functions.ndarray.open import Open
  from evadb.utils.generic_utils import try_to_import_cv2
label_desc: Use image node_id 3 for calling the OpenTests obj's underlying member method code with example usage: obj.test_should_open_image() without return types