mcs/class/corlib/Test/System.Runtime.CompilerServices/AsyncVoidMethodBuilderTest.cs

   1 //
   2 // AsyncVoidMethodBuilderTest.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //
   7 // Copyright (C) 2011 Xamarin, Inc (http://www.xamarin.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29
  30 using System;
  31 using System.Threading;
  32 using System.Threading.Tasks;
  33 using NUnit.Framework;
  34 using System.Runtime.CompilerServices;
  35 using System.Runtime.ExceptionServices;
  36
  37 namespace MonoTests.System.Runtime.CompilerServices
  38 {
  39         [TestFixture]
  40         public class AsyncVoidMethodBuilderTest
  41         {
  42                 class MyContext : SynchronizationContext
  43                 {
  44                         public int Started;
  45                         public int Completed;
  46                         public int PostCounter;
  47                         public int SendCounter;
  48
  49                         public override void OperationStarted ()
  50                         {
  51                                 ++Started;
  52                                 base.OperationStarted ();
  53                         }
  54
  55                         public override void OperationCompleted ()
  56                         {
  57                                 ++Completed;
  58                                 base.OperationCompleted ();
  59                         }
  60
  61                         public override void Post (SendOrPostCallback d, object state)
  62                         {
  63                                 if (state is ExceptionDispatchInfo) {
  64                                         ++PostCounter;
  65                                 }
  66                         }
  67
  68                         public override void Send (SendOrPostCallback d, object state)
  69                         {
  70                                 if (state is Exception) {
  71                                         ++SendCounter;
  72                                         base.Send (d, state);
  73                                 }
  74                         }
  75                 }
  76
  77                 [Test]
  78                 public void SetResult ()
  79                 {
  80                         var awaiter = AsyncVoidMethodBuilder.Create ();
  81                         awaiter.SetResult ();
  82                 }
  83
  84                 [Test]
  85                 public void SetException ()
  86                 {
  87                         var context = new MyContext ();
  88                         var old = SynchronizationContext.Current;
  89
  90                         try {
  91                                 SynchronizationContext.SetSynchronizationContext (context);
  92                                 var awaiter = AsyncVoidMethodBuilder.Create ();
  93
  94                                 Assert.AreEqual (1, context.Started, "#1");
  95                                 Assert.AreEqual (0, context.Completed, "#2");
  96                                 Assert.AreEqual (0, context.SendCounter, "#3");
  97                                 Assert.AreEqual (0, context.PostCounter, "#4");
  98
  99                                 awaiter.SetException (new ApplicationException ());
 100
 101                                 Assert.AreEqual (1, context.Started, "#5");
 102                                 Assert.AreEqual (1, context.Completed, "#6");
 103                                 Assert.AreEqual (0, context.SendCounter, "#7");
 104                                 Assert.AreEqual (1, context.PostCounter, "#8");
 105
 106                                 awaiter.SetResult ();
 107
 108                                 Assert.AreEqual (1, context.Started, "#9");
 109                                 Assert.AreEqual (2, context.Completed, "#10");
 110                                 Assert.AreEqual (0, context.SendCounter, "#11");
 111                                 Assert.AreEqual (1, context.PostCounter, "#12");
 112                         } finally {
 113                                 SynchronizationContext.SetSynchronizationContext (old);
 114                         }
 115                 }
 116         }
 117 }
 118