mcs/tests/test-47.cs

   1 //
   2 // Short-circuit evaluation tests
   3 //
   4 using System;
   5
   6 class X {
   7
   8         static int t_count = 0;
   9         static int f_count = 0;
  10
  11         static bool f ()
  12         {
  13                 Console.WriteLine ("f");
  14                 f_count++;
  15                 return false;
  16         }
  17
  18         static bool t ()
  19         {
  20                 Console.WriteLine ("t");
  21                 t_count++;
  22                 return true;
  23         }
  24
  25         public static int Main ()
  26         {
  27                 if (t () && t ()){
  28                         f_count--;
  29                 }
  30
  31                 if (t_count != 2)
  32                         return 1;
  33
  34                 if (f_count != -1)
  35                         return 3;
  36
  37                 f_count = 0;
  38
  39                 if (t () && f ())
  40                         if (t_count != 3 && f_count == 1)
  41                                 return 2;
  42
  43                 if (f () && f ())
  44                         return 3;
  45
  46                 if (f_count != 2)
  47                         return 4;
  48
  49                 if (f () && t ())
  50                         return 5;
  51
  52                 if (f_count != 3)
  53                         return 6;
  54
  55                 if (t_count != 3)
  56                         return 7;
  57
  58                 //
  59                 // reset
  60                 //
  61                 Console.WriteLine ("or");
  62
  63                 t_count = f_count = 0;
  64
  65                 if (t () || t ()){
  66                         if (t_count != 1)
  67                                 return 8;
  68                 } else
  69                         return 9;
  70
  71                 if (t () || f ()){
  72                         if (f_count != 0)
  73                                 return 10;
  74                         if (t_count != 2)
  75                                 return 16;
  76                 } else
  77                         return 11;
  78
  79                 if (f () || f ()){
  80                         return 12;
  81                 } else
  82                         if (f_count != 2)
  83                                 return 13;
  84
  85                 if (f () || t ()){
  86                         if (f_count != 3)
  87                                 return 15;
  88                         if (t_count != 3)
  89                                 return 17;
  90                 } else
  91                         return 14;
  92
  93                 return 0;
  94         }
  95 }