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

   1 // BatchedJoinBlockTest.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.Collections.Generic;
  25 using System.Threading;
  26 using System.Threading.Tasks.Dataflow;
  27 using NUnit.Framework;
  28
  29 namespace MonoTests.System.Threading.Tasks.Dataflow {
  30         [TestFixture]
  31         public class BatchedJoinBlockTest {
  32                 [Test]
  33                 public void BasicUsageTest()
  34                 {
  35                         Tuple<IList<int>, IList<int>> result = null;
  36                         var evt = new ManualResetEventSlim (false);
  37
  38                         var actionBlock = new ActionBlock<Tuple<IList<int>, IList<int>>> (r =>
  39                         {
  40                                 result = r;
  41                                 evt.Set ();
  42                         });
  43                         var block = new BatchedJoinBlock<int, int> (2);
  44
  45                         block.LinkTo (actionBlock);
  46
  47                         // both targets once
  48                         Assert.IsTrue (block.Target1.Post (1));
  49
  50                         Assert.IsFalse(evt.Wait(100));
  51                         Assert.IsNull (result);
  52
  53                         Assert.IsTrue (block.Target2.Post (2));
  54
  55                         Assert.IsTrue (evt.Wait (100));
  56
  57                         Assert.IsNotNull (result);
  58                         CollectionAssert.AreEqual (new[] { 1 }, result.Item1);
  59                         CollectionAssert.AreEqual (new[] { 2 }, result.Item2);
  60
  61                         result = null;
  62                         evt.Reset ();
  63
  64                         // target 1 twice
  65                         Assert.IsTrue (block.Target1.Post (3));
  66
  67                         Assert.IsFalse(evt.Wait(100));
  68                         Assert.IsNull (result);
  69
  70                         Assert.IsTrue (block.Target1.Post (4));
  71                         Assert.IsTrue (evt.Wait (100));
  72
  73                         Assert.IsNotNull (result);
  74                         CollectionAssert.AreEqual (new[] { 3, 4 }, result.Item1);
  75                         CollectionAssert.IsEmpty (result.Item2);
  76
  77                         result = null;
  78                         evt.Reset ();
  79
  80                         // target 2 twice
  81                         Assert.IsTrue (block.Target2.Post (5));
  82
  83                         Assert.IsFalse(evt.Wait(100));
  84                         Assert.IsNull (result);
  85
  86                         Assert.IsTrue (block.Target2.Post (6));
  87                         Assert.IsTrue (evt.Wait (100));
  88
  89                         Assert.IsNotNull (result);
  90                         CollectionAssert.IsEmpty (result.Item1);
  91                         CollectionAssert.AreEqual (new[] { 5, 6 }, result.Item2);
  92                 }
  93
  94                 [Test]
  95                 public void BoundedCapacityTest ()
  96                 {
  97                         AssertEx.Throws<ArgumentException> (
  98                                 () =>
  99                                 new BatchedJoinBlock<int, int> (2,
 100                                         new GroupingDataflowBlockOptions { BoundedCapacity = 3 }));
 101                 }
 102
 103                 [Test]
 104                 public void CompletionTest ()
 105                 {
 106                         var block = new BatchedJoinBlock<int, int> (2);
 107
 108                         Assert.IsTrue (block.Target1.Post (1));
 109
 110                         block.Complete ();
 111
 112                         Tuple<IList<int>, IList<int>> batch;
 113                         Assert.IsTrue (block.TryReceive (out batch));
 114                         CollectionAssert.AreEqual (new[] { 1 }, batch.Item1);
 115                         CollectionAssert.IsEmpty (batch.Item2);
 116
 117                         Assert.IsTrue (block.Completion.Wait (100));
 118                 }
 119
 120                 [Test]
 121                 public void MaxNumberOfGroupsTest ()
 122                 {
 123                         var scheduler = new TestScheduler ();
 124                         var block = new BatchedJoinBlock<int, int> (1,
 125                                 new GroupingDataflowBlockOptions
 126                                 { MaxNumberOfGroups = 2, TaskScheduler = scheduler });
 127
 128                         Assert.IsTrue (block.Target1.Post (1));
 129
 130                         Assert.IsTrue (block.Target2.Post (2));
 131
 132                         Assert.IsFalse (block.Target2.Post (3));
 133                         Assert.IsFalse (block.Target1.Post (4));
 134
 135                         Tuple<IList<int>, IList<int>> batch;
 136                         Assert.IsTrue (block.TryReceive (out batch));
 137                         CollectionAssert.AreEqual (new[] { 1 }, batch.Item1);
 138                         CollectionAssert.IsEmpty (batch.Item2);
 139
 140                         Assert.IsTrue (block.TryReceive (out batch));
 141                         CollectionAssert.IsEmpty (batch.Item1);
 142                         CollectionAssert.AreEqual (new[] { 2 }, batch.Item2);
 143
 144                         scheduler.ExecuteAll ();
 145
 146                         Assert.IsTrue (block.Completion.Wait (100));
 147                 }
 148         }
 149 }