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
  34 namespace MonoTests.System.Threading
  35 {
  36         [TestFixtureAttribute]
  37         public class ThreadLocalTests
  38         {
  39                 ThreadLocal<int> threadLocal;
  40                 int nTimes;
  41
  42                 [SetUp]
  43                 public void Setup ()
  44                 {
  45                         nTimes = 0;
  46                         threadLocal = new ThreadLocal<int> (() => { Interlocked.Increment (ref nTimes); return 42; });
  47                 }
  48
  49                 [Test]
  50                 public void SingleThreadTest ()
  51                 {
  52                         AssertThreadLocal ();
  53                 }
  54
  55                 [Test]
  56                 public void ThreadedTest ()
  57                 {
  58                         AssertThreadLocal ();
  59
  60                         Thread t = new Thread ((object o) => { Interlocked.Decrement (ref nTimes); AssertThreadLocal (); });
  61                         t.Start ();
  62                         t.Join ();
  63                 }
  64
  65                 [Test]
  66                 public void InitializeThrowingTest ()
  67                 {
  68                         int callTime = 0;
  69                         threadLocal = new ThreadLocal<int> (() => {
  70                                         Interlocked.Increment (ref callTime);
  71                                         throw new ApplicationException ("foo");
  72                                         return 43;
  73                                 });
  74
  75                         Exception exception = null;
  76
  77                         try {
  78                                 var foo = threadLocal.Value;
  79                         } catch (Exception e) {
  80                                 exception = e;
  81                         }
  82
  83                         Assert.IsNotNull (exception, "#1");
  84                         Assert.IsInstanceOfType (typeof (ApplicationException), exception, "#2");
  85                         Assert.AreEqual (1, callTime, "#3");
  86
  87                         exception = null;
  88
  89                         try {
  90                                 var foo = threadLocal.Value;
  91                         } catch (Exception e) {
  92                                 exception = e;
  93                         }
  94
  95                         Assert.IsNotNull (exception, "#4");
  96                         Assert.IsInstanceOfType (typeof (ApplicationException), exception, "#5");
  97                         Assert.AreEqual (1, callTime, "#6");
  98                 }
  99
 100                 [Test, ExpectedException (typeof (InvalidOperationException))]
 101                 [Category ("NotDotNet")] // nunit results in stack overflow
 102                 public void MultipleReferenceToValueTest ()
 103                 {
 104                         threadLocal = new ThreadLocal<int> (() => threadLocal.Value + 1);
 105
 106                         var value = threadLocal.Value;
 107                 }
 108
 109                 [Test]
 110                 public void DefaultThreadLocalInitTest ()
 111                 {
 112                         var local = new ThreadLocal<DateTime> ();
 113                         var local2 = new ThreadLocal<object> ();
 114
 115                         Assert.AreEqual (default (DateTime), local.Value);
 116                         Assert.AreEqual (default (object), local2.Value);
 117                 }
 118
 119                 [Test, ExpectedException (typeof (ObjectDisposedException))]
 120                 public void DisposedOnValueTest ()
 121                 {
 122                         var tl = new ThreadLocal<int> ();
 123                         tl.Dispose ();
 124                         var value = tl.Value;
 125                 }
 126
 127                 [Test, ExpectedException (typeof (ObjectDisposedException))]
 128                 public void DisposedOnIsValueCreatedTest ()
 129                 {
 130                         var tl = new ThreadLocal<int> ();
 131                         tl.Dispose ();
 132                         var value = tl.IsValueCreated;
 133                 }
 134
 135                 [Test]
 136                 public void PerThreadException ()
 137                 {
 138                         int callTime = 0;
 139                         threadLocal = new ThreadLocal<int> (() => {
 140                                         if (callTime == 1)
 141                                                 throw new ApplicationException ("foo");
 142                                         Interlocked.Increment (ref callTime);
 143                                         return 43;
 144                                 });
 145
 146                         Exception exception = null;
 147
 148                         var foo = threadLocal.Value;
 149                         bool thread_value_created = false;
 150                         Assert.AreEqual (43, foo, "#3");
 151                         Thread t = new Thread ((object o) => {
 152                                 try {
 153                                         var foo2 = threadLocal.Value;
 154                                 } catch (Exception e) {
 155                                         exception = e;
 156                                 }
 157                                 // should be false and not throw
 158                                 thread_value_created = threadLocal.IsValueCreated;
 159                         });
 160                         t.Start ();
 161                         t.Join ();
 162                         Assert.AreEqual (false, thread_value_created, "#4");
 163                         Assert.IsNotNull (exception, "#5");
 164                         Assert.IsInstanceOfType (typeof (ApplicationException), exception, "#6");
 165                 }
 166
 167                 void AssertThreadLocal ()
 168                 {
 169                         Assert.IsFalse (threadLocal.IsValueCreated, "#1");
 170                         Assert.AreEqual (42, threadLocal.Value, "#2");
 171                         Assert.IsTrue (threadLocal.IsValueCreated, "#3");
 172                         Assert.AreEqual (42, threadLocal.Value, "#4");
 173                         Assert.AreEqual (1, nTimes, "#5");
 174                 }
 175         }
 176 }
 177 #endif