docstr: Tests that no duplicates or positively related nodes are present in negative samples.
code: def test_no_duplicates_and_positives_in_negative_sample(self):
      """Tests that no duplicates or positively related nodes are present in negative samples."""
      model = PoincareModel(self.data_large, negative=3)
      positive_nodes = model.node_relations[
          0
      ]  # Positive nodes for node 0
      num_samples = 100  # Repeat experiment multiple times
      for i in range(num_samples):
          negatives = model._sample_negatives(0)
          self.assertFalse(positive_nodes & set(negatives))
          self.assertEqual(len(negatives), len(set(negatives)))
  
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 23 for calling the TestPoincareModel obj's underlying member method code with example usage: obj.test_no_duplicates_and_positives_in_negative_sample() without return types