tests/test-iter-09.cs

   1 using System;
   2 using System.Collections;
   3
   4 public class Tester
   5 {
   6         string[] ABC = { "A", "B", "C" };
   7         // D
   8         string [,] EFGH = { { "E", "F" }, { "G", "H"}};
   9         // I
  10         ArrayList al = new ArrayList ();
  11
  12         public Tester ()
  13         {
  14                 al.Add ("J");
  15                 al.Add ("K");
  16         }
  17
  18         public System.Collections.IEnumerator GetEnumerator()
  19         {
  20                 foreach (string s in ABC){
  21                         if (s == null)
  22                                 throw new Exception ();
  23                         else
  24                                 yield return s;
  25                 }
  26
  27                 yield return "D";
  28                 foreach (string s in EFGH){
  29                         if(s == null)
  30                                 throw new Exception ();
  31                         else
  32                                 yield return s;
  33                 }
  34
  35                 yield return "I";
  36                 foreach (string s in al){
  37                         if (s == null)
  38                                 throw new Exception ();
  39                         else
  40                                 yield return s;
  41                 }
  42
  43                 yield return "L";
  44         }
  45 }
  46
  47
  48 class Test
  49 {
  50         public static int Main()
  51         {
  52                 Tester tester = new Tester();
  53                 string [] list = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L" };
  54                 int top = 0;
  55
  56                 foreach (string s in tester){
  57                         if (s != list [top]){
  58                                 Console.WriteLine ("Failure, got {0} expected {1}", s, list [top]);
  59                                 return 1;
  60                         }
  61                         top++;
  62                 }
  63                 if (top != list.Length){
  64                         Console.WriteLine ("Failure, expected {0} got {1}", list.Length, top);
  65                 }
  66                 Console.WriteLine ("Success");
  67                 return 0;
  68         }
  69 }