code: def test_plot_map_with_auto_cut_coords():
      import matplotlib.pyplot as pl
  
      plt.switch_backend("svg")
      data = np.zeros((20, 20, 20))
      data[3:-3, 3:-3, 3:-3] = 1
  
      for slicer in "xyz":
          plot_map(
              data,
              np.eye(4),
              cut_coords=None,
              slicer=slicer,
              black_bg=True,
          )
  
file_path: nipy/nipy/labs/viz_tools/test/test_activation_maps.py
imports: import tempfile
  import numpy
  import pytest
  from unittest.mock import patch
  from ..activation_maps import demo_plot_map, plot_anat, plot_map
  from ..anat_cache import _AnatCache, mni_sform
label_desc: Use image node_id 6 for calling a global function with example usage: test_plot_map_with_auto_cut_coords() without return types