code: def test_inputs(self):
      # all empty inputs will give a divide by zero exception
      vec_1 = []
      vec_2 = []
      self.assertRaises(
          ZeroDivisionError, matutils.jaccard, vec_1, vec_2
      )
  
imports: import logging
  import unittest
  from gensim import matutils
  from scipy.sparse import csr_matrix
  import numpy
  import math
  from gensim.corpora.mmcorpus import MmCorpus
  from gensim.models import ldamodel
  from gensim.test.utils import datapath, common_dictionary, common_corpus
label_desc: Use image node_id 1 for calling the TestJaccard obj's underlying member method code with example usage: obj.test_inputs() without return types