Wed Feb 24 15:47:16 CET 2010 Paolo Molaro <lupus@ximian.com>
[mono.git] / mcs / class / corlib / Test / System.Threading / ThreadLazyTests.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 ThreadLazyTests
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                 void AssertThreadLocal ()
67                 {
68                         Assert.IsFalse (threadLocal.IsValueCreated, "#1");
69                         Assert.AreEqual (42, threadLocal.Value, "#2");
70                         Assert.IsTrue (threadLocal.IsValueCreated, "#3");
71                         Assert.AreEqual (42, threadLocal.Value, "#4");
72                         Assert.AreEqual (1, nTimes, "#5");
73                 }
74         }
75 }
76 #endif