docstr: Test similarity returns expected value for two words, and for identical words.
docstr_tok: ["Test","similarity","returns","expected","value","for","two","words",",","and","for","identical","words","."]
code: def test_similarity(self):
      """Test similarity returns expected value for two words, and for identical words."""
      self.assertTrue(
          np.allclose(self.vectors.similarity("war", "war"), 1)
      )
      self.assertTrue(
          np.allclose(
              self.vectors.similarity("war", "conflict"), 0.93305397
          )
      )
  
imports: import functools
  import logging
  import unittest
  import numpy
  from gensim.models.keyedvectors import KeyedVectors, REAL, pseudorandom_weak_vector
  from gensim.test.utils import datapath
  import gensim.models.keyedvectors
label_desc: Use image node_id 18 for calling the TestKeyedVectors obj's underlying member method code with example usage: obj.test_similarity() without return types