code: def test_make_incidence_matrix_of_nothing():
      """Make incidence matrix with two empty labels matrices"""
  
      module = cellprofiler.modules.untangleworms.UntangleWorms()
      result = module.make_incidence_matrix(
          numpy.zeros((10, 20), int), 0, numpy.zeros((10, 20), int), 0
      )
      assert tuple(result.shape) == (0, 0)
  
imports: import base64
  import io
  import os
  import tempfile
  import zlib
  import imageio
  import centrosome.outline
  import numpy
  import scipy.ndimage
  import cellprofiler_core.image
  import cellprofiler_core.measurement
  import cellprofiler_core.modules
  import cellprofiler.modules.untangleworms
  import cellprofiler_core.object
  import cellprofiler_core.pipeline
  import cellprofiler_core.preferences
  import cellprofiler_core.setting
  import cellprofiler_core.workspace
  import tests.frontend.modules
label_desc: Use image node_id 12 for calling a global function with example usage: test_make_incidence_matrix_of_nothing() without return types