code: def test_zeros():
      """Run the module with an image of all zeros"""
      workspace, module = make_workspace(numpy.zeros((20, 10), bool))
      module.run(workspace)
      count = workspace.measurements.get_current_image_measurement(
          "_".join((C_COUNT, OBJECTS_NAME))
      )
      assert count == 0
  
imports: import centrosome.cpmorphology
  import numpy
  import scipy.ndimage
  import six.moves
  import cellprofiler_core.image
  import cellprofiler_core.measurement
  import cellprofiler_core.measurement
  from cellprofiler_core.constants.measurement import C_COUNT, M_LOCATION_CENTER_X, M_LOCATION_CENTER_Y, COLTYPE_INTEGER, COLTYPE_FLOAT, M_NUMBER_OBJECT_NUMBER, FF_COUNT
  import cellprofiler.modules.identifydeadworms
  import cellprofiler_core.object
  import cellprofiler_core.pipeline
  import cellprofiler_core.workspace
label_desc: Use image node_id 4 for calling a global function with example usage: test_zeros() without return types