code: def _do_test_for_valid_notebook_job_name(self, job_name):
      # no error is expected.
      NotebookJobStep(
          name=STEP_NAME,
          display_name=DISPLAY_NAME,
          description=DESCRIPTION,
          notebook_job_name=job_name,
          input_notebook=INPUT_NOTEBOOK,
          image_uri=IMAGE_URI,
          kernel_name=KERNEL_NAME,
      )
  
imports: from __future__ import absolute_import
  import unittest
  from mock import Mock, patch
  from sagemaker.workflow.notebook_job_step import NotebookJobStep
  from sagemaker.workflow.functions import Join
label_desc: Use image node_id 10 for calling the TestNotebookJobStep obj's underlying member method code with example usage: obj._do_test_for_valid_notebook_job_name(job_name) without return types