code: def test_insert_middle_preserves_rangeindex(self):
      # insert in the middle
      idx = Index(range(0, 3, 2))
      result = idx.insert(1, 1)
      expected = Index(range(3))
      tm.assert_index_equal(result, expected, exact=True)
  
      idx = idx * 2
      result = idx.insert(1, 2)
      expected = expected * 2
      tm.assert_index_equal(result, expected, exact=True)
  
imports: import numpy
  import pytest
  from pandas.core.dtypes.common import ensure_platform_int
  import pandas
  from pandas import Index, RangeIndex
  import pandas._testing
label_desc: Use image node_id 10 for calling the TestRangeIndex obj's underlying member method code with example usage: obj.test_insert_middle_preserves_rangeindex() without return types