code: def test_get_categories():
      """Test the get_categories function for some different cases"""
      module = (
          cellprofiler.modules.measurecolocalization.MeasureColocalization()
      )
      module.images_list.value = ", ".join((IMAGE1_NAME, IMAGE2_NAME))
      module.objects_list.value = OBJECTS_NAME
      module.images_or_objects.value = (
          cellprofiler.modules.measurecolocalization.M_IMAGES
      )
  
      def cat(name):
          return module.get_categories(None, name) == ["Correlation"]
  
      assert cat("Image")
      assert not cat(OBJECTS_NAME)
      module.images_or_objects.value = (
          cellprofiler.modules.measurecolocalization.M_OBJECTS
      )
      assert not cat("Image")
      assert cat(OBJECTS_NAME)
      module.images_or_objects.value = (
          cellprofiler.modules.measurecolocalization.M_IMAGES_AND_OBJECTS
      )
      assert cat("Image")
      assert cat(OBJECTS_NAME)
  
imports: import numpy
  import six.moves
  import cellprofiler_core.image
  import cellprofiler_core.measurement
  from cellprofiler_core.constants.measurement import COLTYPE_FLOAT
  import cellprofiler.modules.measurecolocalization
  import cellprofiler_core.object
  import cellprofiler_core.pipeline
  import cellprofiler_core.workspace
  import tests.frontend.modules
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_categories() and returns: unknown