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 #if NET_4_5
  30
  31 using System;
  32 using System.Threading;
  33 using System.Threading.Tasks;
  34 using NUnit.Framework;
  35 using System.Runtime.CompilerServices;
  36 using System.Runtime.ExceptionServices;
  37
  38 namespace MonoTests.System.Runtime.CompilerServices
  39 {
  40         [TestFixture]
  41         public class AsyncVoidMethodBuilderTest
  42         {
  43                 class MyContext : SynchronizationContext
  44                 {
  45                         public int Started;
  46                         public int Completed;
  47                         public int PostCounter;
  48                         public int SendCounter;
  49
  50                         public override void OperationStarted ()
  51                         {
  52                                 ++Started;
  53                                 base.OperationStarted ();
  54                         }
  55
  56                         public override void OperationCompleted ()
  57                         {
  58                                 ++Completed;
  59                                 base.OperationCompleted ();
  60                         }
  61
  62                         public override void Post (SendOrPostCallback d, object state)
  63                         {
  64                                 if (state is ExceptionDispatchInfo) {
  65                                         ++PostCounter;
  66                                 }
  67                         }
  68
  69                         public override void Send (SendOrPostCallback d, object state)
  70                         {
  71                                 if (state is Exception) {
  72                                         ++SendCounter;
  73                                         base.Send (d, state);
  74                                 }
  75                         }
  76                 }
  77
  78                 [Test]
  79                 public void SetResult ()
  80                 {
  81                         var awaiter = AsyncVoidMethodBuilder.Create ();
  82                         awaiter.SetResult ();
  83                 }
  84
  85                 [Test]
  86                 public void SetException ()
  87                 {
  88                         var context = new MyContext ();
  89                         var old = SynchronizationContext.Current;
  90
  91                         try {
  92                                 SynchronizationContext.SetSynchronizationContext (context);
  93                                 var awaiter = AsyncVoidMethodBuilder.Create ();
  94
  95                                 Assert.AreEqual (1, context.Started, "#1");
  96                                 Assert.AreEqual (0, context.Completed, "#2");
  97                                 Assert.AreEqual (0, context.SendCounter, "#3");
  98                                 Assert.AreEqual (0, context.PostCounter, "#4");
  99
 100                                 awaiter.SetException (new ApplicationException ());
 101
 102                                 Assert.AreEqual (1, context.Started, "#5");
 103                                 Assert.AreEqual (1, context.Completed, "#6");
 104                                 Assert.AreEqual (0, context.SendCounter, "#7");
 105                                 Assert.AreEqual (1, context.PostCounter, "#8");
 106
 107                                 awaiter.SetResult ();
 108
 109                                 Assert.AreEqual (1, context.Started, "#9");
 110                                 Assert.AreEqual (2, context.Completed, "#10");
 111                                 Assert.AreEqual (0, context.SendCounter, "#11");
 112                                 Assert.AreEqual (1, context.PostCounter, "#12");
 113                         } finally {
 114                                 SynchronizationContext.SetSynchronizationContext (old);
 115                         }
 116                 }
 117         }
 118 }
 119
 120 #endif