mcs/tests/test-async-23.cs

   1 // Compiler options: -langversion:future
   2
   3 using System;
   4 using System.Threading;
   5 using System.Threading.Tasks;
   6
   7 class MyContext : SynchronizationContext
   8 {
   9         public int Started;
  10         public int Completed;
  11         public int PostCounter;
  12         public int SendCounter;
  13
  14         public override void OperationStarted ()
  15         {
  16                 ++Started;
  17                 base.OperationStarted ();
  18         }
  19
  20         public override void OperationCompleted ()
  21         {
  22                 ++Completed;
  23                 base.OperationCompleted ();
  24         }
  25
  26         public override void Post (SendOrPostCallback d, object state)
  27         {
  28                 ++PostCounter;
  29                 base.Post (d, state);
  30         }
  31
  32         public override void Send (SendOrPostCallback d, object state)
  33         {
  34                 ++SendCounter;
  35                 base.Send (d, state);
  36         }
  37 }
  38
  39
  40 public class TestPostContext
  41 {
  42         static async Task<int> Test ()
  43         {
  44                 return await Task.Factory.StartNew (() => 1);
  45         }
  46
  47         public static int Main ()
  48         {
  49                 var context = new MyContext ();
  50                 try {
  51                         SynchronizationContext.SetSynchronizationContext (context);
  52                         var t = Test ();
  53                         Task.WaitAll (t);
  54                 } finally {
  55                         SynchronizationContext.SetSynchronizationContext (null);
  56                 }
  57
  58                 if (context.Started != 0 || context.Completed != 0 || context.SendCounter != 0)
  59                         return 1;
  60
  61                 if (context.PostCounter != 1)
  62                         return 2;
  63
  64                 Console.WriteLine ("ok");
  65                 return 0;
  66         }
  67 }