def test_scanl_last_non_empty():
# pylint: disable=missing-docstring
slst = SList([1, 2, 3, 4])
res = slst.scanl_last(operator.add, 0)
exp = (SList([0, 1, 3, 6]), 10)
assert res == exp
def test_scanl_last_empty():
# pylint: disable=missing-docstring
slst = SList([])
res = slst.scanl_last(operator.add, 0)
exp = ([], 0)
assert res == exp
