code: def test_rename_bug2(self):
      # GH 19497
      # rename was changing Index to MultiIndex if Index contained tuples
  
      df = DataFrame(
          data=np.arange(3),
          index=[(0, 0), (1, 1), (2, 2)],
          columns=["a"],
      )
      df = df.rename({(1, 1): (5, 4)}, axis="index")
      expected = DataFrame(
          data=np.arange(3),
          index=[(0, 0), (5, 4), (2, 2)],
          columns=["a"],
      )
      tm.assert_frame_equal(df, expected)
  
imports: from collections import ChainMap
  import inspect
  import numpy
  import pytest
  from pandas import DataFrame, Index, MultiIndex, merge
  import pandas._testing
label_desc: Use image node_id 9 for calling the TestRename obj's underlying member method code with example usage: obj.test_rename_bug2() without return types