code: def test_concat_copy_index_frame(self, axis, using_copy_on_write):
      # GH 29879
      df = DataFrame([[1, 2], [3, 4]], columns=["a", "b"])
      comb = concat([df, df], axis=axis, copy=True)
      if not using_copy_on_write:
          assert not comb.index.is_(df.index)
          assert not comb.columns.is_(df.columns)
      elif axis in [0, "index"]:
          assert not comb.index.is_(df.index)
          assert comb.columns.is_(df.columns)
      elif axis in [1, "columns"]:
          assert comb.index.is_(df.index)
          assert not comb.columns.is_(df.columns)
  
imports: from copy import deepcopy
  import numpy
  import pytest
  from pandas.errors import PerformanceWarning
  import pandas
  from pandas import DataFrame, Index, MultiIndex, Series, concat
  import pandas._testing
label_desc: Use image node_id 5 for calling the TestIndexConcat obj's underlying member method code with example usage: obj.test_concat_copy_index_frame(axis, using_copy_on_write) without return types