old_contents: 
  from ..run import get_parser
  
  
  def test_get_parser():
      try:
          get_parser().parse_args(['-h'])
      except SystemExit:
          print('success')
  
new_contents: from subprocess import call
  import os
  from ..run import get_parser
  
  
  def test_get_parser():
      try:
          get_parser().parse_args(['-h'])
      except SystemExit:
          print('success')
  
  
  def test_nibs(bids_dir, atlas_file, atlas_lut, fmriprep_dir):
      bids_dir = str(bids_dir)
      out_dir = os.path.join(bids_dir, 'derivatives')
      assert call(["nibs",
                   "-a " + str(atlas_file),
                   "-l " + str(atlas_lut),
                   "-c WhiteMatter CSF",
                   "-lp 0.01",
                   bids_dir,
                   "fmriprep",
                   out_dir,
                   "participant"])
  
subject: add functional test to test_run.py