code: def test_shift_and_pad(self, tensor, shift, axis, target):
      with self.test_session() as session:
          output = transformer_aux.shift_and_pad(tensor, shift, axis)
          output_val = session.run(output)
          self.assertAllEqual(output_val, target)
  
file_path: tensor2tensor/tensor2tensor/models/research/transformer_aux_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import numpy
  from tensor2tensor.data_generators import problem_hparams
  from tensor2tensor.models.research import transformer_aux
  import tensorflow.compat.v1
  from tensorflow.compat.v1 import estimator
label_desc: Use image node_id 1 for calling the TransformerAuxTest obj's underlying member method code with example usage: obj.test_shift_and_pad(tensor, shift, axis, target) without return types