tests/test-36.cs

   1 //
   2 // This program excercises invoking foreach on structures
   3 // that implement GetEnumerator
   4 //
   5
   6 using System;
   7 using System.Collections;
   8 struct X {
   9         int [] a;
  10
  11         public IEnumerator GetEnumerator ()
  12         {
  13                         a = new int [3] { 1, 2, 3};
  14                         return a.GetEnumerator ();
  15         }
  16 }
  17
  18 class Y {
  19         static X x;
  20
  21         static int Main ()
  22         {
  23                 int total = 0;
  24                 x = new X ();
  25
  26                 foreach (object a in x){
  27                         total += (int) a;
  28                 }
  29
  30                 if (total != 6)
  31                         return 1;
  32
  33                 total = 0;
  34
  35                 foreach (object a in new X ()){
  36                         total += (int) a;
  37                 }
  38                 if (total != 6)
  39                         return 3;
  40
  41                 total = 0;
  42
  43                 //
  44                 // implicit block
  45                 //
  46                 foreach (object a in x)
  47                         total += (int) a;
  48                 if (total != 6)
  49                         return 2;
  50
  51                 return 0;
  52         }
  53 }
  54