code: def test_rename_chainmap(self, args, kwargs):
      # see gh-23859
      colAData = range(1, 11)
      colBdata = np.random.default_rng(2).standard_normal(10)
  
      df = DataFrame({"A": colAData, "B": colBdata})
      result = df.rename(*args, **kwargs)
  
      expected = DataFrame({"a": colAData, "b": colBdata})
      tm.assert_frame_equal(result, 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 4 for calling the TestRename obj's underlying member method code with example usage: obj.test_rename_chainmap(args, kwargs) without return types