code: def test_RegTools_inputs():
      input_map = dict(
          add_val=dict(
              argstr="-add %s",
          ),
          args=dict(
              argstr="%s",
          ),
          bin_flag=dict(
              argstr="-bin",
          ),
          chg_res_val=dict(
              argstr="-chgres %f %f %f",
          ),
          div_val=dict(
              argstr="-div %s",
          ),
          down_flag=dict(
              argstr="-down",
          ),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          in_file=dict(
              argstr="-in %s",
              extensions=None,
              mandatory=True,
          ),
          inter_val=dict(
              argstr="-interp %d",
          ),
          iso_flag=dict(
              argstr="-iso",
          ),
          mask_file=dict(
              argstr="-nan %s",
              extensions=None,
          ),
          mul_val=dict(
              argstr="-mul %s",
          ),
          noscl_flag=dict(
              argstr="-noscl",
          ),
          omp_core_val=dict(
              argstr="-omp %i",
              usedefault=True,
          ),
          out_file=dict(
              argstr="-out %s",
              extensions=None,
              name_source=["in_file"],
              name_template="%s_tools.nii.gz",
          ),
          rms_val=dict(
              argstr="-rms %s",
              extensions=None,
          ),
          smo_g_val=dict(
              argstr="-smoG %f %f %f",
          ),
          smo_s_val=dict(
              argstr="-smoS %f %f %f",
          ),
          sub_val=dict(
              argstr="-sub %s",
          ),
          thr_val=dict(
              argstr="-thr %f",
          ),
      )
      inputs = RegTools.input_spec()
  
      for key, metadata in list(input_map.items()):
          for metakey, value in list(metadata.items()):
              assert getattr(inputs.traits()[key], metakey) == value
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_RegTools_inputs() without return types