code: def test_get_parents(self):
      parents_expected = {
          "bowel-problem": [],
          "dog-out": ["bowel-problem", "family-out"],
          "family-out": [],
          "hear-bark": ["dog-out"],
          "light-on": ["family-out"],
      }
      parents = self.reader.get_parents()
      for variable in parents_expected:
          self.assertListEqual(
              parents_expected[variable], parents[variable]
          )
  
imports: import os
  import unittest
  import networkx
  import numpy
  import numpy.testing
  from pgmpy import config
  from pgmpy.factors.discrete import TabularCPD
  from pgmpy.models import BayesianNetwork
  from pgmpy.readwrite import BIFReader, BIFWriter
label_desc: Use image node_id 8 for calling the TestBIFReaderTorch obj's underlying member method code with example usage: obj.test_get_parents() without return types