code: def testImpossibleClusterOrderingAllocationHomogeneous(self):
      analyser = ordering_analyser(
          [5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0, 5.0]
      )
      (
          amount_clusters,
          borders,
      ) = analyser.calculate_connvectivity_radius(2)
      assert None == amount_clusters
      assert 0 == len(borders)
  
imports: import unittest
  import matplotlib
  from pyclustering.cluster.tests.optics_templates import OpticsTestTemplates
  from pyclustering.cluster.optics import optics, ordering_analyser, ordering_visualizer
  from pyclustering.utils import read_sample
  from pyclustering.samples.definitions import SIMPLE_SAMPLES, FCPS_SAMPLES
label_desc: Use image node_id 35 for calling the OpticsUnitTest obj's underlying member method code with example usage: obj.testImpossibleClusterOrderingAllocationHomogeneous() without return types