def test_insert_edges_preserves_rangeindex(self):
idx = Index(range(4, 9, 2))
result = idx.insert(0, 2)
expected = Index(range(2, 9, 2))
tm.assert_index_equal(result, expected, exact=True)
result = idx.insert(3, 10)
expected = Index(range(4, 11, 2))
tm.assert_index_equal(result, expected, exact=True)
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)
