code: def test_union_sort_other_incomparable_true(self):
      idx = Index([1, pd.Timestamp("2000")])
      with pytest.raises(TypeError, match=".*"):
          idx.union(idx[:1], sort=True)
  
imports: from datetime import datetime
  import numpy
  import pytest
  import pandas
  from pandas import Index, Series
  import pandas._testing
  from pandas.core.algorithms import safe_sort
label_desc: Use image node_id 6 for calling the TestIndexSetOps obj's underlying member method code with example usage: obj.test_union_sort_other_incomparable_true() without return types