class/corlib/Test/System.Threading/CountdownEventTests.cs

   1 #if NET_4_0
   2 // CountdownEventTests.cs
   3 //
   4 // Copyright (c) 2008 Jérémie "Garuma" Laval
   5 //
   6 // Permission is hereby granted, free of charge, to any person obtaining a copy
   7 // of this software and associated documentation files (the "Software"), to deal
   8 // in the Software without restriction, including without limitation the rights
   9 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 // copies of the Software, and to permit persons to whom the Software is
  11 // furnished to do so, subject to the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be included in
  14 // all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 // THE SOFTWARE.
  23 //
  24 //
  25
  26 using System;
  27 using System.Threading;
  28
  29 using NUnit.Framework;
  30
  31 using MonoTests.System.Threading.Tasks;
  32
  33 namespace MonoTests.System.Threading
  34 {
  35         [TestFixtureAttribute]
  36         public class CountdownEventTests
  37         {
  38                 CountdownEvent evt;
  39
  40                 [SetUpAttribute]
  41                 public void Setup()
  42                 {
  43                         evt = new CountdownEvent(5);
  44                 }
  45
  46                 [Test]
  47                 public void InitialTestCase()
  48                 {
  49                         Assert.AreEqual(5, evt.InitialCount, "#1");
  50                         evt.AddCount();
  51                         evt.Signal(3);
  52                         Assert.AreEqual(5, evt.InitialCount, "#2");
  53                 }
  54
  55                 [Test]
  56                 public void CurrentCountTestCase()
  57                 {
  58                         Assert.AreEqual(5, evt.CurrentCount, "#1");
  59
  60                         evt.AddCount();
  61                         Assert.AreEqual(6, evt.CurrentCount, "#2");
  62
  63                         evt.TryAddCount(2);
  64                         Assert.AreEqual(8, evt.CurrentCount, "#3");
  65
  66                         evt.Signal(4);
  67                         Assert.AreEqual(4, evt.CurrentCount, "#4");
  68
  69                         evt.Reset();
  70                         Assert.AreEqual(5, evt.CurrentCount, "#5");
  71                 }
  72
  73                 [Test]
  74                 public void IsSetTestCase()
  75                 {
  76                         Assert.IsFalse(evt.IsSet, "#1");
  77
  78                         evt.Signal(5);
  79                         Assert.IsTrue(evt.IsSet, "#2");
  80
  81                         evt.Reset();
  82                         Assert.IsFalse(evt.IsSet, "#3");
  83                 }
  84
  85                 [Test]
  86                 public void TryAddCountTestCase()
  87                 {
  88                         Assert.IsTrue(evt.TryAddCount(2), "#1");
  89                         evt.Signal(7);
  90                         Assert.IsFalse(evt.TryAddCount(), "#2");
  91                 }
  92
  93                 [Test]
  94                 public void WaitTestCase()
  95                 {
  96                         int count = 0;
  97                         bool s = false;
  98
  99                         ParallelTestHelper.ParallelStressTest(evt, delegate (CountdownEvent e) {
 100                                 if (Interlocked.Increment(ref count) % 2 == 0) {
 101                                         Thread.Sleep(100);
 102                                         while(!e.IsSet)
 103                                                 e.Signal();
 104                                 } else {
 105                                         e.Wait();
 106                                         s = true;
 107                                 }
 108                         });
 109
 110                         Assert.IsTrue(s, "#1");
 111                         Assert.IsTrue(evt.IsSet, "#2");
 112                 }
 113
 114                 [Test]
 115                 public void AddCountSignalStressTestCase()
 116                 {
 117                         int count = 0;
 118                         ParallelTestHelper.ParallelStressTest(evt, delegate (CountdownEvent e) {
 119                                 int num = Interlocked.Increment(ref count);
 120                                 if (num % 2 == 0)
 121                                         e.AddCount();
 122                                 else
 123                                         e.Signal();
 124                         }, 7);
 125
 126                         Assert.AreEqual(4, evt.CurrentCount, "#1");
 127                         Assert.IsFalse(evt.IsSet, "#2");
 128                 }
 129         }
 130 }
 131 #endif