code: def test_get_original_factors(self, huang_darwiche_nodes):
      original_factors = get_original_factors(huang_darwiche_nodes)
      assert original_factors["a"] == huang_darwiche_nodes[0]
      assert original_factors["b"] == huang_darwiche_nodes[1]
      assert original_factors["c"] == huang_darwiche_nodes[2]
      assert original_factors["d"] == huang_darwiche_nodes[3]
      assert original_factors["e"] == huang_darwiche_nodes[4]
      assert original_factors["f"] == huang_darwiche_nodes[5]
      assert original_factors["g"] == huang_darwiche_nodes[6]
      assert original_factors["h"] == huang_darwiche_nodes[7]
  
imports: from __future__ import division
  import copy
  from collections import Counter
  import pytest
  from causalnex.ebaybbn import BBNNode, JoinTree, JoinTreeCliqueNode, SepSet, build_bbn, build_bbn_from_conditionals, build_join_tree, combinations, make_moralized_copy, make_node_func, make_undirected_copy, priority_func, triangulate
  from causalnex.ebaybbn.exceptions import VariableNotInGraphError, VariableValueNotInDomainError
  from causalnex.ebaybbn.graph import Node, UndirectedNode
  from causalnex.ebaybbn.utils import get_args, get_original_factors, make_key
label_desc: Use image node_id 2 for calling the TestBBN obj's underlying member method code with example usage: obj.test_get_original_factors(huang_darwiche_nodes) without return types