tests/contracts_generic_type.nit

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   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 # Test the creation of contract with generic class
  16
  17 class MyGenericClass[E]
  18
  19         fun foo(x: E)
  20         is
  21                 expects(x == 1)
  22         do
  23                 if x != 1 then print "Error x != 1"
  24         end
  25 end
  26
  27 class MyGenericClass2[E]
  28
  29         var real = new Array[E]
  30
  31         fun add_all(x: Array[Object])
  32         is
  33                 expects(x.length != 0)
  34         do
  35                 real.add_all x
  36         end
  37 end
  38
  39 var first = new MyGenericClass[Int]
  40 first.foo(1)
  41 var second = new MyGenericClass2[Int]
  42 second.add_all([1,2,3])
  43 second.add_all(new Array[Int])