code: def test_anat_cache():
      # A smoke test, that can work only if the templates are installed
      try:
          _AnatCache.get_blurred()
      except OSError:
          "The templates are not there"
  
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 4 for calling a global function with example usage: test_anat_cache() without return types