code: def test_anisotropic_diffusion_voxel_spacing_array():
      # Purpose of this test is to ensure the filter code does not crash
      # Depending on Python versions
      arr = np.random.uniform(size=(60, 31, 3))
      filtered = anisotropic_diffusion(
          arr,
          voxelspacing=np.array([1, 1, 1.0]),
      )
      assert filtered.shape == arr.shape
  
file_path: medpy/tests/filter_/anisotropic_diffusion.py
imports: import unittest
  import scipy
  import numpy
  from medpy.filter import anisotropic_diffusion
label_desc: Use image node_id 5 for calling a global function with example usage: test_anisotropic_diffusion_voxel_spacing_array() without return types