mcs/class/corlib/Test/System.Threading/ThreadLocalTests.cs

   1 #if NET_4_0
   2 //
   3 // ThreadLazyTests.cs
   4 //
   5 // Author:
   6 //       Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
   7 //
   8 // Copyright (c) 2009 Jérémie "Garuma" Laval
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining a copy
  11 // of this software and associated documentation files (the "Software"), to deal
  12 // in the Software without restriction, including without limitation the rights
  13 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 // copies of the Software, and to permit persons to whom the Software is
  15 // furnished to do so, subject to the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be included in
  18 // all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 // THE SOFTWARE.
  27
  28 using System;
  29 using System.Threading;
  30
  31 using NUnit;
  32 using NUnit.Core;
  33 using NUnit.Framework;
  34
  35 namespace MonoTests.System.Threading
  36 {
  37         [TestFixtureAttribute]
  38         public class ThreadLocalTests
  39         {
  40                 ThreadLocal<int> threadLocal;
  41                 int nTimes;
  42
  43                 [SetUp]
  44                 public void Setup ()
  45                 {
  46                         nTimes = 0;
  47                         threadLocal = new ThreadLocal<int> (() => { Interlocked.Increment (ref nTimes); return 42; });
  48                 }
  49
  50                 [Test]
  51                 public void SingleThreadTest ()
  52                 {
  53                         AssertThreadLocal ();
  54                 }
  55
  56                 [Test]
  57                 public void ThreadedTest ()
  58                 {
  59                         AssertThreadLocal ();
  60
  61                         Thread t = new Thread ((object o) => { Interlocked.Decrement (ref nTimes); AssertThreadLocal (); });
  62                         t.Start ();
  63                         t.Join ();
  64                 }
  65
  66                 [Test]
  67                 public void InitializeThrowingTest ()
  68                 {
  69                         int callTime = 0;
  70                         threadLocal = new ThreadLocal<int> (() => {
  71                                         Interlocked.Increment (ref callTime);
  72                                         throw new ApplicationException ("foo");
  73                                         return 43;
  74                                 });
  75
  76                         Exception exception = null;
  77
  78                         try {
  79                                 var foo = threadLocal.Value;
  80                         } catch (Exception e) {
  81                                 exception = e;
  82                         }
  83
  84                         Assert.IsNotNull (exception, "#1");
  85                         Assert.IsInstanceOfType (typeof (ApplicationException), exception, "#2");
  86                         Assert.AreEqual (1, callTime, "#3");
  87
  88                         exception = null;
  89
  90                         try {
  91                                 var foo = threadLocal.Value;
  92                         } catch (Exception e) {
  93                                 exception = e;
  94                         }
  95
  96                         Assert.IsNotNull (exception, "#4");
  97                         Assert.IsInstanceOfType (typeof (ApplicationException), exception, "#5");
  98                         Assert.AreEqual (1, callTime, "#6");
  99                 }
 100
 101                 [Test, ExpectedException (typeof (InvalidOperationException))]
 102                 public void MultipleReferenceToValueTest ()
 103                 {
 104                         threadLocal = new ThreadLocal<int> (() => threadLocal.Value + 1);
 105
 106                         var value = threadLocal.Value;
 107                 }
 108
 109                 void AssertThreadLocal ()
 110                 {
 111                         Assert.IsFalse (threadLocal.IsValueCreated, "#1");
 112                         Assert.AreEqual (42, threadLocal.Value, "#2");
 113                         Assert.IsTrue (threadLocal.IsValueCreated, "#3");
 114                         Assert.AreEqual (42, threadLocal.Value, "#4");
 115                         Assert.AreEqual (1, nTimes, "#5");
 116                 }
 117         }
 118 }
 119 #endif