code: def testCompareVI(self):
      expected = [0, 0.8675, math.log(6)]
      self._testMethod(None, expected)
      self._testMethod("vi", expected)
  
imports: import math
  import random
  import unittest
  from igraph import Clustering, CohesiveBlocks, Cover, Graph, Histogram, InternalError, UniqueIdGenerator, VertexClustering, compare_communities, split_join_distance, set_random_number_generator
label_desc: Use image node_id 3 for calling the ComparisonTests obj's underlying member method code with example usage: obj.testCompareVI() without return types