code: def test_Smooth_inputs():
      input_map = dict(
          data_type=dict(
              field="dtype",
          ),
          fwhm=dict(
              field="fwhm",
          ),
          implicit_masking=dict(
              field="im",
          ),
          in_files=dict(
              copyfile=False,
              field="data",
              mandatory=True,
          ),
          matlab_cmd=dict(),
          mfile=dict(
              usedefault=True,
          ),
          out_prefix=dict(
              field="prefix",
              usedefault=True,
          ),
          paths=dict(),
          use_mcr=dict(),
          use_v8struct=dict(
              min_ver="8",
              usedefault=True,
          ),
      )
      inputs = Smooth.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_Smooth_inputs() without return types