tests/test-27.cs

   1 using System;
   2
   3 public interface Hello {
   4
   5         bool MyMethod (int i);
   6 }
   7
   8 public interface Another : Hello {
   9
  10         int AnotherMethod (int i);
  11 }
  12
  13 public class Foo : Hello, Another {
  14
  15         public bool MyMethod (int i)
  16         {
  17                 if (i == 22)
  18                         return true;
  19                 else
  20                         return false;
  21         }
  22
  23         public int AnotherMethod (int i)
  24         {
  25                 return i * 10;
  26         }
  27
  28 }
  29
  30 public interface ITest {
  31
  32         bool TestMethod (int i, float j);
  33 }
  34
  35 public class Blah : Foo {
  36
  37         public delegate void MyDelegate (int i, int j);
  38
  39         void Bar (int i, int j)
  40         {
  41                 Console.WriteLine (i+j);
  42         }
  43
  44         public static int Main ()
  45         {
  46                 Blah k = new Blah ();
  47
  48                 Foo f = k;
  49
  50                 object o = k;
  51
  52                 if (f is Foo)
  53                         Console.WriteLine ("I am a Foo!");
  54
  55                 Hello ihello = f;
  56
  57                 Another ianother = f;
  58
  59                 ihello = ianother;
  60
  61                 bool b = f.MyMethod (22);
  62
  63                 MyDelegate del = new MyDelegate (k.Bar);
  64
  65                 del (2, 3);
  66
  67                 Delegate tmp = del;
  68
  69                 // Explicit reference conversions
  70
  71                 MyDelegate adel = (MyDelegate) tmp;
  72
  73                 adel (4, 7);
  74
  75                 Blah l = (Blah) o;
  76
  77                 l.Bar (20, 30);
  78
  79                 l = (Blah) f;
  80
  81                 l.Bar (2, 5);
  82
  83                 f = (Foo) ihello;
  84
  85                 // The following cause exceptions even though they are supposed to work
  86                 // according to the spec
  87
  88                 // This one sounds ridiculous !
  89                 // ITest t = (ITest) l;
  90
  91                 // ITest u = (ITest) ihello;
  92
  93                 return 0;
  94
  95         }
  96 }
  97