code: def test_get_true_ancestor_with_jump(self):
      lineage = LineageNode(1)
      child_lineage = LineageNode(2, parent=lineage)
      true_lineage = LineageNode(3)
      true_lineage.set_jump(child_lineage)
      assert child_lineage.parent is lineage
      assert child_lineage.base is true_lineage
      assert child_lineage.get_true_ancestor() is true_lineage
  
imports: import os
  import random
  import pytest
  from base import ObjectiveStub, TrialStub, build_full_tree, build_population, compare_generations
  from orion.algo.pbt.pbt import LineageNode, Lineages
label_desc: Use image node_id 8 for calling the TestLineageNode obj's underlying member method code with example usage: obj.test_get_true_ancestor_with_jump() without return types