# This file is part of NIT ( http://www.nitlanguage.org ). # # 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. # Verification if the contract is inherited class MyClass fun foo(x: Int) is ensure(x > 0) do print "Good" end end class SubClass super MyClass redef fun foo(x: Int) do print "Fail" end end var first = new MyClass first.foo(1) var sub = new SubClass # Check if the contract is inherited sub.foo(0) # Fail