code: def test_union_same_step_misaligned(self):
      # GH#44019
      left = RangeIndex(range(0, 20, 4))
      right = RangeIndex(range(1, 21, 4))
  
      result = left.union(right)
      expected = Index([0, 1, 4, 5, 8, 9, 12, 13, 16, 17])
      tm.assert_index_equal(result, expected, exact=True)
  
imports: from datetime import datetime, timedelta
  from hypothesis import assume, given, strategies
  import numpy
  import pytest
  from pandas import Index, RangeIndex
  import pandas._testing
label_desc: Use image node_id 7 for calling the TestRangeIndexSetOps obj's underlying member method code with example usage: obj.test_union_same_step_misaligned() without return types