def test_difference_endpoints_overlap_interior_preserved(self):
left = RangeIndex(-8, 20, 7)
right = RangeIndex(13, -9, -3)
result = left.difference(right)
expected = RangeIndex(-1, 13, 7)
assert expected.tolist() == [-1, 6]
tm.assert_index_equal(result, expected, exact=True)
def test_difference_interior_overlap_endpoints_preserved(self):
left = RangeIndex(range(4))
right = RangeIndex(range(1, 3))
result = left.difference(right)
expected = RangeIndex(0, 4, 3)
assert expected.tolist() == [0, 3]
tm.assert_index_equal(result, expected, exact=True)