mcs/tests/test-94.cs

   1 using System;
   2
   3 public interface IVehicle {
   4         int Start ();
   5         int Stop ();
   6         int Turn ();
   7 }
   8
   9 public class Base : IVehicle {
  10         int IVehicle.Start () { return 1; }
  11         public int Stop () { return 2; }
  12         public virtual int Turn () { return 3; }
  13 }
  14
  15 public class Derived1 : Base {
  16         // replaces Base.Turn + IVehice.Turn
  17         public override int Turn () { return 4; }
  18 }
  19
  20 public class Derived2 : Base, IVehicle {
  21         // legal - we redeclared IVehicle support
  22         public new int Stop () { return 6; }
  23         // legal - we redeclared IVehicle support
  24         int IVehicle.Start () { return 5; }
  25         // replaces IVehicle.Turn
  26         int IVehicle.Turn () { return 7; }
  27         // replaces Base.Turn
  28         public override int Turn () { return 8; }
  29 }
  30
  31 public class Test {
  32
  33         public static int Main () {
  34                 Derived1 d1 = new Derived1 ();
  35                 Derived2 d2 = new Derived2 ();
  36                 Base b1 = d1;
  37                 Base b2 = d2;
  38
  39                 if (d1.Turn () != 4)
  40                         return 1;
  41
  42                 if (((IVehicle)d1).Turn () != 4)
  43                         return 2;
  44
  45                 if (((IVehicle)d2).Turn () != 7)
  46                         return 3;
  47
  48                 if (b2.Turn () != 8)
  49                         return 4;
  50
  51                 if (((IVehicle)b2).Turn () != 7)
  52                         return 5;
  53
  54                 //Console.WriteLine ("TEST {0}", ((IVehicle)b2).Turn ());
  55
  56                 return 0;
  57         }
  58 }
  59