code: def test_grad():
      _test_grad([8, 8])
      _test_grad([8, 8], [4, 4])
  
imports: import pytest
  import numpy
  import tensorflow
  from skimage import transform
  from tensorflow_addons.image import transform_ops
  from tensorflow_addons.utils import test_utils
label_desc: Use image node_id 10 for calling a global function with example usage: test_grad() without return types