code: def test_entropy(self):
      query_strategy = CategoryVectorInconsistencyAndRanking()
      self.assertEqual(0, query_strategy._entropy(0, 10))
  
imports: import unittest
  from small_text.query_strategies import CategoryVectorInconsistencyAndRanking
label_desc: Use image node_id 3 for calling the CategoryVectorInconsistencyAndRankingTest obj's underlying member method code with example usage: obj.test_entropy() without return types