code: def test_Slicer_inputs():
      input_map = dict(
          all_axial=dict(
              argstr="-A",
              position=10,
              requires=["image_width"],
              xor=(
                  "single_slice",
                  "middle_slices",
                  "all_axial",
                  "sample_axial",
              ),
          ),
          args=dict(
              argstr="%s",
          ),
          colour_map=dict(
              argstr="-l %s",
              extensions=None,
              position=4,
          ),
          dither_edges=dict(
              argstr="-t",
              position=7,
          ),
          environ=dict(
              nohash=True,
              usedefault=True,
          ),
          image_edges=dict(
              argstr="%s",
              extensions=None,
              position=2,
          ),
          image_width=dict(
              argstr="%d",
              position=-2,
          ),
          in_file=dict(
              argstr="%s",
              extensions=None,
              mandatory=True,
              position=1,
          ),
          intensity_range=dict(
              argstr="-i %.3f %.3f",
              position=5,
          ),
          label_slices=dict(
              argstr="-L",
              position=3,
              usedefault=True,
          ),
          middle_slices=dict(
              argstr="-a",
              position=10,
              xor=(
                  "single_slice",
                  "middle_slices",
                  "all_axial",
                  "sample_axial",
              ),
          ),
          nearest_neighbour=dict(
              argstr="-n",
              position=8,
          ),
          out_file=dict(
              argstr="%s",
              extensions=None,
              genfile=True,
              hash_files=False,
              position=-1,
          ),
          output_type=dict(),
          sample_axial=dict(
              argstr="-S %d",
              position=10,
              requires=["image_width"],
              xor=(
                  "single_slice",
                  "middle_slices",
                  "all_axial",
                  "sample_axial",
              ),
          ),
          scaling=dict(
              argstr="-s %f",
              position=0,
          ),
          show_orientation=dict(
              argstr="%s",
              position=9,
              usedefault=True,
          ),
          single_slice=dict(
              argstr="-%s",
              position=10,
              requires=["slice_number"],
              xor=(
                  "single_slice",
                  "middle_slices",
                  "all_axial",
                  "sample_axial",
              ),
          ),
          slice_number=dict(
              argstr="-%d",
              position=11,
          ),
          threshold_edges=dict(
              argstr="-e %.3f",
              position=6,
          ),
      )
      inputs = Slicer.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_Slicer_inputs() without return types