# 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 it's possible to define a contract with a call of an attribute and a method call class MyClass var bar = 10 fun foo(x: Int) is expect(bar == 10) ensure(x > 0) do if bar != 10 then print "Error" end end class MyClass2 var my_class: MyClass fun baz: Bool do return false end fun foo(bool: Bool) is expect(not self.baz) ensure(my_class.bar == 11) do if baz then print "Error" my_class.bar = 11 end end var first = new MyClass first.foo(1) # Ok var second = new MyClass2(first) second.foo(false) # Ok