docstr: Tests whether additional input data is loaded correctly and completely.
code: def test_online_learning(self):
      """Tests whether additional input data is loaded correctly and completely."""
      model = PoincareModel(self.data, burn_in=0, negative=3)
      self.assertEqual(len(model.kv), 7)
      self.assertEqual(
          model.kv.get_vecattr("kangaroo.n.01", "count"), 3
      )
      self.assertEqual(model.kv.get_vecattr("cat.n.01", "count"), 1)
      model.build_vocab(
          [("kangaroo.n.01", "cat.n.01")], update=True
      )  # update vocab
      self.assertEqual(
          model.kv.get_vecattr("kangaroo.n.01", "count"), 4
      )
      self.assertEqual(model.kv.get_vecattr("cat.n.01", "count"), 2)
  
imports: import logging
  import os
  import tempfile
  import unittest
  import numpy
  from gensim.models.poincare import PoincareRelations, PoincareModel, PoincareKeyedVectors
  from gensim.test.utils import datapath
label_desc: Use image node_id 7 for calling the TestPoincareModel obj's underlying member method code with example usage: obj.test_online_learning() without return types