# This file is part of NIT ( http://www.nitlanguage.org ). # # Copyright 2012 Alexandre Terrasa # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import base_minimal class A end class B[T] end class C[T] end var a = new A var b = new B[Object] var c = new C[nullable Object] assert a isa nullable A # true assert b isa nullable B[Object] # true assert b isa nullable B[nullable Object] # true assert not c isa C[Object] # false assert c isa C[nullable Object] # true true.output