mcs/class/System.Threading.Tasks.Dataflow/Test/System.Threading.Tasks.Dataflow/OutputAvailableTest.cs

   1 // OutputAvailableTest.cs
   2 //
   3 // Copyright (c) 2012 Petr Onderka
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining a copy
   6 // of this software and associated documentation files (the "Software"), to deal
   7 // in the Software without restriction, including without limitation the rights
   8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 // copies of the Software, and to permit persons to whom the Software is
  10 // furnished to do so, subject to the following conditions:
  11 //
  12 // The above copyright notice and this permission notice shall be included in
  13 // all copies or substantial portions of the Software.
  14 //
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21 // THE SOFTWARE.
  22
  23 using System;
  24 using System.Threading;
  25 using System.Threading.Tasks.Dataflow;
  26 using NUnit.Framework;
  27
  28 namespace MonoTests.System.Threading.Tasks.Dataflow {
  29         [TestFixture]
  30         public class OutputAvailableTest {
  31                 [Test]
  32                 public void ImmediateTest()
  33                 {
  34                         var scheduler = new TestScheduler();
  35                         var source = new BufferBlock<int>(new DataflowBlockOptions{TaskScheduler = scheduler});
  36
  37                         Assert.IsTrue(source.Post(1));
  38
  39                         var task = source.OutputAvailableAsync();
  40
  41                         // not necessary in MS.NET
  42                         scheduler.ExecuteAll();
  43
  44                         Assert.IsTrue(task.IsCompleted);
  45                         Assert.IsTrue(task.Result);
  46                 }
  47
  48                 [Test]
  49                 public void PostponedTest()
  50                 {
  51                         var source = new BufferBlock<int>(new DataflowBlockOptions());
  52
  53                         var task = source.OutputAvailableAsync();
  54
  55                         Assert.IsFalse(task.Wait(100));
  56
  57                         Assert.IsTrue(source.Post(1));
  58
  59                         Assert.IsTrue(task.Wait(100));
  60                         Assert.IsTrue(task.Result);
  61                 }
  62
  63                 [Test]
  64                 public void CompletedImmediateTest()
  65                 {
  66                         var source = new BufferBlock<int>();
  67                         source.Complete();
  68
  69                         var task = source.OutputAvailableAsync();
  70
  71                         Assert.IsTrue(task.Wait(100));
  72                         Assert.IsFalse(task.Result);
  73                 }
  74
  75                 [Test]
  76                 public void CompletedPostponedTest()
  77                 {
  78                         var source = new BufferBlock<int>(new DataflowBlockOptions());
  79
  80                         var task = source.OutputAvailableAsync();
  81
  82                         Assert.IsFalse(task.Wait(100));
  83
  84                         source.Complete();
  85
  86                         Assert.IsTrue(task.Wait(100));
  87                         Assert.IsFalse(task.Result);
  88                 }
  89
  90                 [Test]
  91                 public void FaultedImmediateTest()
  92                 {
  93                         var source = new BufferBlock<int>();
  94                         ((IDataflowBlock)source).Fault(new Exception());
  95
  96                         var task = source.OutputAvailableAsync();
  97
  98                         Assert.IsTrue(task.Wait(100));
  99                         Assert.IsFalse(task.Result);
 100                 }
 101
 102                 [Test]
 103                 public void FaultedPostponedTest()
 104                 {
 105                         var source = new BufferBlock<int>();
 106
 107                         var task = source.OutputAvailableAsync();
 108
 109                         Assert.IsFalse(task.Wait(100));
 110
 111                         ((IDataflowBlock)source).Fault(new Exception());
 112
 113                         Assert.IsTrue(task.Wait(100));
 114                         Assert.IsFalse(task.Result);
 115                 }
 116
 117                 [Test]
 118                 public void WithTargetTest()
 119                 {
 120                         var source = new BufferBlock<int>();
 121                         var target = new BufferBlock<int>();
 122                         source.LinkTo(target);
 123
 124                         var task = source.OutputAvailableAsync();
 125
 126                         Assert.IsTrue(source.Post(1));
 127
 128                         Assert.IsFalse(task.Wait(100));
 129                 }
 130
 131                 [Test]
 132                 public void WithDecliningTargetTest()
 133                 {
 134                         var source = new BufferBlock<int>();
 135                         var target = new BufferBlock<int>();
 136                         source.LinkTo(target, i => false);
 137
 138                         var task = source.OutputAvailableAsync();
 139
 140                         Assert.IsTrue(source.Post(1));
 141
 142                         Assert.IsTrue(task.Wait(100));
 143                         Assert.IsTrue(task.Result);
 144                 }
 145
 146                 [Test]
 147                 public void CancellationTest()
 148                 {
 149                         var source = new BufferBlock<int>();
 150
 151                         var tokenSource = new CancellationTokenSource();
 152                         var task = source.OutputAvailableAsync(tokenSource.Token);
 153
 154                         tokenSource.Cancel();
 155
 156                         AssertEx.Throws<AggregateException>(() => task.Wait(100));
 157                         Assert.IsTrue(task.IsCanceled);
 158                 }
 159         }
 160 }