code: def test_inverse(self):
      x = tf.reshape(
          tf.constant(
              [[0.2, 0.5, 0.8], [0.7, 0.4, 0.1], [0.6, 0.9, 0.3]]
          ),
          shape=[1, 3, 3, 1],
      )
      self.assertAllClose(transforms.idct(transforms.dct(x)), x)
  
file_path: neural-structured-learning/research/multi_representation_adversary/multi_representation_adversary/transforms_test.py
imports: from multi_representation_adversary import transforms
  import numpy
  import tensorflow.compat.v2
label_desc: Use image node_id 3 for calling the TransformsTest obj's underlying member method code with example usage: obj.test_inverse() without return types