mono/tests/delegate-invoke.cs

   1 using System;
   2 using System.Reflection;
   3 using System.Globalization;
   4 using System.Diagnostics;
   5
   6 struct EmptyStruct {
   7         public int value;
   8
   9         public int test() {
  10                 return value + 10;
  11         }
  12
  13         public static int test2 (ref EmptyStruct foo) {
  14                 return foo.value + 20;
  15         }
  16 }
  17
  18 delegate int ActionRef (ref EmptyStruct _this);
  19 delegate int ActionRef2 ();
  20 delegate int ActionRef3 (EmptyStruct _this);
  21
  22 public struct Foo {
  23         public int x,y,z;
  24         public Foo (int i) {
  25                 x = y = z = i;
  26         }
  27 }
  28
  29 delegate Foo NoArgDele ();
  30 delegate Foo OneArgDele (Driver d);
  31
  32
  33 public class Driver
  34 {
  35         public static Foo M0 () { return new Foo (10); }
  36         public Foo M1 () { return new Foo (this == null ? 10 : 20); }
  37         public static Foo M2 (string x) { return new Foo (30); }
  38         public static Foo M2i (int x) { return new Foo (40); }
  39         public static Foo M3 (object x) { return new Foo (50); }
  40         public virtual Foo M4 () { return new Foo (this == null ? 60 : 70); }
  41
  42         public static int Main () {
  43                 int r = test_0_refobj_invokes ();
  44                 if (r != 0)
  45                         return r;
  46                 r = test_0_valuetype_invokes ();
  47                 if (r != 0)
  48                         return r + 20;
  49                 return 0;
  50         }
  51
  52         public static int test_0_refobj_invokes ()
  53         {
  54                 NoArgDele x;
  55                 OneArgDele y;
  56
  57                 x = Driver.M0;
  58                 if (x ().x != 10)
  59                         return 1;
  60
  61                 x = new Driver ().M1;
  62                 if (x ().x != 20)
  63                         return 2;
  64
  65                 x = (NoArgDele)Delegate.CreateDelegate (typeof (NoArgDele), "10", typeof (Driver).GetMethod ("M2"));
  66                 if (x ().x != 30)
  67                         return 3;
  68
  69                 x = (NoArgDele)Delegate.CreateDelegate (typeof (NoArgDele), null, typeof (Driver).GetMethod ("M3"));
  70                 if (x ().x != 50)
  71                         return 4;
  72
  73                 y = (OneArgDele)Delegate.CreateDelegate (typeof (OneArgDele), null, typeof (Driver).GetMethod ("M4"));
  74                 if (y (new Driver ()).x != 70)
  75                         return 5;
  76
  77                 x = (NoArgDele)Delegate.CreateDelegate (typeof (NoArgDele), null, typeof (Driver).GetMethod ("M1"));
  78                 if (x ().x != 10)
  79                         return 6;
  80
  81                 x = (NoArgDele)Delegate.CreateDelegate (typeof (NoArgDele), null, typeof (Driver).GetMethod ("M4"));
  82                 if (x ().x != 60)
  83                         return 7;
  84
  85                 return 0;
  86         }
  87
  88     public static int test_0_valuetype_invokes ()
  89     {
  90                 EmptyStruct es = default (EmptyStruct);
  91                 es.value = 100;
  92
  93                 var ar1 = (ActionRef)Delegate.CreateDelegate(typeof (ActionRef), typeof (EmptyStruct).GetMethod("test"));
  94                 if (ar1 (ref es) != 110) {
  95                         Console.WriteLine ("expected 110, got {0}", ar1 (ref es));
  96                         return 1;
  97                 }
  98
  99                 var ar2 = (ActionRef2)Delegate.CreateDelegate (typeof (ActionRef2), null, typeof (EmptyStruct).GetMethod("test"));
 100                 try {
 101                         Console.WriteLine ("must not return, got {0}", ar2 ());
 102                         return 2;
 103                 } catch (NullReferenceException) {
 104                 }
 105
 106                 ar1 = (ActionRef) Delegate.CreateDelegate(typeof (ActionRef), typeof (EmptyStruct).GetMethod("test2"));
 107                 if (ar1 (ref es) != 120) {
 108                         Console.WriteLine ("expected 120, got {0}", ar1 (ref es));
 109                         return 3;
 110                 }
 111
 112                 ar2 = (ActionRef2) Delegate.CreateDelegate(typeof (ActionRef2), es, typeof (EmptyStruct).GetMethod("test"));
 113                 if (ar2 () != 110) {
 114                         Console.WriteLine ("expected 110 got {0}", ar2 ());
 115                         return 4;
 116                 }
 117
 118                 try {
 119                         Delegate.CreateDelegate(typeof (ActionRef2), new EmptyStruct (), typeof (EmptyStruct).GetMethod("test2"));
 120                         Console.WriteLine ("must fail/2");
 121                         return 5;
 122                 } catch (ArgumentException) {}
 123
 124                 try {
 125                         Delegate.CreateDelegate(typeof (ActionRef3), typeof (EmptyStruct).GetMethod("test"));
 126                         Console.WriteLine ("must fail/2");
 127                         return 6;
 128                 } catch (ArgumentException) {}
 129
 130                 return 0;
 131         }
 132 }