mono/tests/exception18.cs

   1 using System;
   2 using System.Linq;
   3
   4 class C
   5 {
   6         static Exception e;
   7
   8         static void Throw ()
   9         {
  10                 try {
  11                         int.Parse (null);
  12                 } catch (Exception ex) {
  13                         e = ex;
  14                 }
  15         }
  16
  17         static int FrameCount (Exception ex)
  18         {
  19                         string fullTrace = ex.StackTrace;
  20                         string[] frames = fullTrace.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
  21
  22                         // Ignore metadata
  23                         frames = frames.Where (l => !l.StartsWith ("[")).ToArray ();
  24
  25                         return frames.Length;
  26         }
  27
  28         public static void Main ()
  29         {
  30                 Throw ();
  31
  32                 try {
  33                         throw e;
  34                 } catch (Exception ex) {
  35                         int frames = FrameCount (ex);
  36                         if (frames != 1)
  37                                 throw new Exception (String.Format("Exception carried {0} frames along with it when it should have reported one.", frames));
  38                 }
  39
  40                 try {
  41                         try {
  42                                 int.Parse (null);
  43                         } catch (Exception) {
  44                                 throw;
  45                         }
  46                 } catch (Exception ex) {
  47                         int frames = FrameCount (ex);
  48                         if (frames != 4)
  49                                 throw new Exception (String.Format("Exception carried {0} frames along with it when it should have reported four.", frames));
  50                 }
  51
  52         }
  53 }