1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2012 Alexandre Terrasa <alexandre@moz-code.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
25 var c
= new C
[nullable Object]
27 assert a
isa nullable A
# true
29 assert b
isa nullable B
[Object] # true
30 assert b
isa nullable B
[nullable Object] # true
32 assert not c
isa C
[Object] # false
33 assert c
isa C
[nullable Object] # true