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.Framework;
  33 #if !MOBILE
  34 using NUnit.Framework.SyntaxHelpers;
  35 #endif
  36
  37 namespace MonoTests.System.Threading
  38 {
  39         [TestFixtureAttribute]
  40         public class ThreadLocalTests
  41         {
  42                 ThreadLocal<int> threadLocal;
  43                 int nTimes;
  44
  45                 [SetUp]
  46                 public void Setup ()
  47                 {
  48                         nTimes = 0;
  49                         threadLocal = new ThreadLocal<int> (() => { Interlocked.Increment (ref nTimes); return 42; });
  50                 }
  51
  52                 [Test]
  53                 public void SingleThreadTest ()
  54                 {
  55                         AssertThreadLocal ();
  56                 }
  57
  58                 [Test]
  59                 public void ThreadedTest ()
  60                 {
  61                         AssertThreadLocal ();
  62
  63                         Thread t = new Thread ((object o) => { Interlocked.Decrement (ref nTimes); AssertThreadLocal (); });
  64                         t.Start ();
  65                         t.Join ();
  66                 }
  67
  68                 [Test]
  69                 public void InitializeThrowingTest ()
  70                 {
  71                         int callTime = 0;
  72                         threadLocal = new ThreadLocal<int> (() => {
  73                                         Interlocked.Increment (ref callTime);
  74                                         throw new ApplicationException ("foo");
  75                                 });
  76
  77                         Exception exception = null;
  78
  79                         try {
  80                                 var foo = threadLocal.Value;
  81                         } catch (Exception e) {
  82                                 exception = e;
  83                         }
  84
  85                         Assert.IsNotNull (exception, "#1");
  86                         Assert.That (exception, Is.TypeOf (typeof (ApplicationException)), "#2");
  87                         Assert.AreEqual (1, callTime, "#3");
  88
  89                         exception = null;
  90
  91                         try {
  92                                 var foo = threadLocal.Value;
  93                         } catch (Exception e) {
  94                                 exception = e;
  95                         }
  96
  97                         Assert.IsNotNull (exception, "#4");
  98                         Assert.That (exception, Is.TypeOf (typeof (ApplicationException)), "#5");
  99                         Assert.AreEqual (2, callTime, "#6");
 100                 }
 101
 102                 [Category ("NotDotNet")] // nunit results in stack overflow
 103                 public void MultipleReferenceToValueTest ()
 104                 {
 105                         try {
 106                                 threadLocal = new ThreadLocal<int> (() => threadLocal.Value + 1);
 107                                 var v = threadLocal.Value;
 108
 109                                 Assert.Fail ("#1");
 110                         } catch (InvalidOperationException e) {
 111                         }
 112                 }
 113
 114                 [Test]
 115                 public void DefaultThreadLocalInitTest ()
 116                 {
 117                         var local = new ThreadLocal<DateTime> ();
 118                         var local2 = new ThreadLocal<object> ();
 119
 120                         Assert.AreEqual (default (DateTime), local.Value);
 121                         Assert.AreEqual (default (object), local2.Value);
 122                 }
 123
 124                 [Test, ExpectedException (typeof (ObjectDisposedException))]
 125                 public void DisposedOnValueTest ()
 126                 {
 127                         var tl = new ThreadLocal<int> ();
 128                         tl.Dispose ();
 129                         var value = tl.Value;
 130                 }
 131
 132                 [Test, ExpectedException (typeof (ObjectDisposedException))]
 133                 public void DisposedOnIsValueCreatedTest ()
 134                 {
 135                         var tl = new ThreadLocal<int> ();
 136                         tl.Dispose ();
 137                         var value = tl.IsValueCreated;
 138                 }
 139
 140                 [Test]
 141                 public void PerThreadException ()
 142                 {
 143                         int callTime = 0;
 144                         threadLocal = new ThreadLocal<int> (() => {
 145                                         if (callTime == 1)
 146                                                 throw new ApplicationException ("foo");
 147                                         Interlocked.Increment (ref callTime);
 148                                         return 43;
 149                                 });
 150
 151                         Exception exception = null;
 152
 153                         var foo = threadLocal.Value;
 154                         bool thread_value_created = false;
 155                         Assert.AreEqual (43, foo, "#3");
 156                         Thread t = new Thread ((object o) => {
 157                                 try {
 158                                         var foo2 = threadLocal.Value;
 159                                 } catch (Exception e) {
 160                                         exception = e;
 161                                 }
 162                                 // should be false and not throw
 163                                 thread_value_created = threadLocal.IsValueCreated;
 164                         });
 165                         t.Start ();
 166                         t.Join ();
 167                         Assert.AreEqual (false, thread_value_created, "#4");
 168                         Assert.IsNotNull (exception, "#5");
 169                         Assert.That (exception, Is.TypeOf (typeof (ApplicationException)), "#6");
 170                 }
 171
 172                 void AssertThreadLocal ()
 173                 {
 174                         Assert.IsFalse (threadLocal.IsValueCreated, "#1");
 175                         Assert.AreEqual (42, threadLocal.Value, "#2");
 176                         Assert.IsTrue (threadLocal.IsValueCreated, "#3");
 177                         Assert.AreEqual (42, threadLocal.Value, "#4");
 178                         Assert.AreEqual (1, nTimes, "#5");
 179                 }
 180
 181                 class SetMreOnFinalize
 182                 {
 183                         ManualResetEventSlim m_mres;
 184
 185                         public SetMreOnFinalize (ManualResetEventSlim mres)
 186                         {
 187                                 m_mres = mres;
 188                         }
 189
 190                         ~SetMreOnFinalize()
 191                         {
 192                                 m_mres.Set();
 193                         }
 194                 }
 195
 196                 [Test]
 197                 public void DisposeOnThreadExit ()
 198                 {
 199                         var threadLocal = new ThreadLocal<SetMreOnFinalize>();
 200                         var mres = new ManualResetEventSlim(false);
 201                         var thread = new Thread (() => { threadLocal.Value = new SetMreOnFinalize (mres); });
 202
 203                         thread.Start ();
 204                         thread.Join ();
 205
 206                         SpinWait.SpinUntil (() => {
 207                                 GC.Collect();
 208                                 GC.WaitForPendingFinalizers();
 209                                 GC.Collect();
 210                                 return mres.IsSet;
 211                         }, 500);
 212
 213                         if (!mres.IsSet)
 214                                 Assert.Fail ();
 215                 }
 216         }
 217 }
 218 #endif