tests/contracts_ensures_sequence.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 class MyClass
  16         fun foo(x: Int, y: Float)
  17         is
  18                 ensures(x > 2)
  19         do
  20
  21         end
  22 end
  23
  24 class MySubClass
  25         super MyClass
  26
  27         redef fun foo(x: Int, y: Float)
  28         is
  29                 ensures(y > 1.0)
  30         do
  31
  32         end
  33 end
  34
  35 var first = new MyClass
  36 first.foo(2, 1.1)
  37 var second = new MySubClass
  38 second.foo(1, 0.5) #Fail