mono/tests/delegate11.cs

   1 using System;
   2
   3 public static class Driver
   4 {
   5         delegate void SimpleDelegate ();
   6
   7         static int error = 0;
   8
   9         class VirtualDelegate0
  10         {
  11                 public virtual void OnEvent ()
  12                 {
  13                         Console.WriteLine ("VirtualDelegate0.OnEvent (error!)");
  14                         error = 1;
  15                 }
  16         }
  17
  18         class VirtualDelegate1 : VirtualDelegate0
  19         {
  20                 public override void OnEvent ()
  21                 {
  22                         Console.WriteLine ("VirtualDelegate1.OnEvent");
  23                 }
  24         }
  25
  26         class NonVirtualDelegate
  27         {
  28                 public void OnEvent ()
  29                 {
  30                         Console.WriteLine ("NonVirtualDelegate.OnEvent");
  31                 }
  32         }
  33
  34         static bool check (SimpleDelegate d)
  35         {
  36                 error = 0;
  37                 d ();
  38                 return error == 0;
  39         }
  40
  41         public static int Main ()
  42         {
  43                 SimpleDelegate dv = new SimpleDelegate (new VirtualDelegate1 ().OnEvent);
  44                 SimpleDelegate dnv = new SimpleDelegate (new NonVirtualDelegate ().OnEvent);
  45
  46                 if (!check (dv + dv))
  47                         return 1;
  48                 if (!check (dnv + dv))
  49                         return 2;
  50                 if (!check (dv + dnv))
  51                         return 3;
  52                 if (!check (dnv + dnv))
  53                         return 4;
  54
  55                 return 0;
  56         }
  57 }