def test_cleanup_subclass():
a = TypeMap({int: Merge("int")})
ca = cleanup(a)
assert isinstance(ca, TypeMap)
assert ca == TypeMap({int: "int"})
def test_cleanup():
a = dict(a=1, b=[2, Merge(3)], c=Override(4), d=DELETE)
assert cleanup(a) == dict(a=1, b=[2, 3], c=4)