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

   1 //
   2 // ActionBlockTest.cs
   3 //
   4 // Author:
   5 //       Jérémie "garuma" Laval <jeremie.laval@gmail.com>
   6 //       Petr Onderka <gsvick@gmail.com>
   7 //
   8 // Copyright (c) 2011 Jérémie "garuma" Laval
   9 // Copyright (c) 2012 Petr Onderka
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining a copy
  12 // of this software and associated documentation files (the "Software"), to deal
  13 // in the Software without restriction, including without limitation the rights
  14 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  15 // copies of the Software, and to permit persons to whom the Software is
  16 // furnished to do so, subject to the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be included in
  19 // all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  24 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  26 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  27 // THE SOFTWARE.
  28
  29 using System.Linq;
  30 using System.Threading;
  31 using System.Threading.Tasks;
  32 using System.Threading.Tasks.Dataflow;
  33
  34 using NUnit.Framework;
  35
  36 namespace MonoTests.System.Threading.Tasks.Dataflow {
  37         [TestFixture]
  38         public class ActionBlockTest {
  39                 [Test]
  40                 public void BasicUsageTest ()
  41                 {
  42                         bool[] array = new bool[3];
  43                         var evt = new CountdownEvent (array.Length);
  44                         var block = new ActionBlock<int> (i => { array[i] = true; evt.Signal (); });
  45
  46                         for (int i = 0; i < array.Length; ++i)
  47                                 Assert.IsTrue (block.Post (i), "Not accepted");
  48
  49                         Assert.IsTrue (evt.Wait (500));
  50
  51                         Assert.IsTrue (array.All (b => b), "Some false");
  52                 }
  53
  54                 [Test]
  55                 public void CompleteTest ()
  56                 {
  57                         var block = new ActionBlock<int> (i => Thread.Sleep (100));
  58
  59                         for (int i = 0; i < 10; i++)
  60                                 Assert.IsTrue (block.Post (i), "Not Accepted");
  61
  62                         block.Complete ();
  63                         // Still element to be processed so Completion should be false
  64                         Assert.IsFalse (block.Completion.IsCompleted);
  65                         block.Completion.Wait ();
  66                         Assert.IsTrue (block.Completion.IsCompleted);
  67                 }
  68
  69                 [Test]
  70                 public void AsyncNullTest()
  71                 {
  72                         var scheduler = new TestScheduler ();
  73                         var block = new ActionBlock<int> (
  74                                 i => null,
  75                                 new ExecutionDataflowBlockOptions { TaskScheduler = scheduler });
  76
  77                         Assert.IsTrue (block.Post (1));
  78
  79                         scheduler.ExecuteAll ();
  80
  81                         Assert.IsFalse (block.Completion.Wait (100));
  82
  83                         block.Complete ();
  84
  85                         Assert.IsTrue (block.Completion.Wait (100));
  86                 }
  87
  88                 [Test]
  89                 public void AsyncCancelledTest()
  90                 {
  91                         var scheduler = new TestScheduler ();
  92                         var block = new ActionBlock<int> (
  93                                 i =>
  94                                 {
  95                                         var tcs = new TaskCompletionSource<int> ();
  96                                         tcs.SetCanceled ();
  97                                         return tcs.Task;
  98                                 }, new ExecutionDataflowBlockOptions { TaskScheduler = scheduler });
  99
 100                         Assert.IsTrue (block.Post (1));
 101
 102                         scheduler.ExecuteAll ();
 103
 104                         Assert.IsFalse (block.Completion.Wait (100));
 105                 }
 106         }
 107 }