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

   1 //
   2 // ExecutionContextTest.cs - NUnit tests for ExecutionContext
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 using System;
  32 using System.Security;
  33 using System.Threading;
  34
  35 using NUnit.Framework;
  36
  37 namespace MonoTests.System.Threading {
  38
  39         [TestFixture]
  40         public class ExecutionContextTest {
  41
  42                 static bool success;
  43
  44                 static void Callback (object o)
  45                 {
  46                         success = (bool)o;
  47                 }
  48
  49                 [SetUp]
  50                 public void SetUp ()
  51                 {
  52                         success = false;
  53                 }
  54
  55                 [TearDown]
  56                 public void TearDown ()
  57                 {
  58                         if (ExecutionContext.IsFlowSuppressed ())
  59                                 ExecutionContext.RestoreFlow ();
  60                 }
  61
  62                 [Test]
  63                 public void Capture ()
  64                 {
  65                         ExecutionContext ec = ExecutionContext.Capture ();
  66                         Assert.IsNotNull (ec, "Capture");
  67
  68                         AsyncFlowControl afc = ExecutionContext.SuppressFlow ();
  69                         Assert.IsTrue (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-1");
  70                         try {
  71                                 ec = ExecutionContext.Capture ();
  72                                 Assert.IsNull (ec, "Capture with SuppressFlow");
  73                         }
  74                         finally {
  75                                 afc.Undo ();
  76                         }
  77                 }
  78
  79                 [Test]
  80                 public void Copy ()
  81                 {
  82                         ExecutionContext ec = ExecutionContext.Capture ();
  83                         Assert.IsNotNull (ec, "Capture");
  84
  85                         ExecutionContext copy = ec.CreateCopy ();
  86                         Assert.IsNotNull (copy, "Copy of Capture");
  87
  88                         Assert.IsFalse (ec.Equals (copy));
  89                         Assert.IsFalse (copy.Equals (ec));
  90                         Assert.IsFalse (Object.ReferenceEquals (ec, copy));
  91
  92                         ExecutionContext copy2nd = copy.CreateCopy ();
  93                         Assert.IsNotNull (copy2nd, "2nd level copy of Capture");
  94                 }
  95
  96                 [Test]
  97                 [ExpectedException (typeof (InvalidOperationException))]
  98                 public void Copy_FromThread ()
  99                 {
 100                         ExecutionContext ec = Thread.CurrentThread.ExecutionContext;
 101                         Assert.IsNotNull (ec, "Thread.CurrentThread.ExecutionContext");
 102
 103                         ExecutionContext copy = ec.CreateCopy ();
 104                 }
 105
 106                 [Test]
 107                 public void IsFlowSuppressed ()
 108                 {
 109                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-1");
 110
 111                         AsyncFlowControl afc = ExecutionContext.SuppressFlow ();
 112                         Assert.IsTrue (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-2");
 113                         afc.Undo ();
 114
 115                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-3");
 116                 }
 117
 118                 [Test]
 119                 [ExpectedException (typeof (InvalidOperationException))]
 120                 public void RestoreFlow_None ()
 121                 {
 122                         ExecutionContext.RestoreFlow ();
 123                 }
 124
 125                 [Test]
 126                 public void RestoreFlow_SuppressFlow ()
 127                 {
 128                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-1");
 129                         ExecutionContext.SuppressFlow ();
 130                         Assert.IsTrue (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-2");
 131                         ExecutionContext.RestoreFlow ();
 132                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-3");
 133                 }
 134
 135                 [Test]
 136                 public void Run ()
 137                 {
 138                         Assert.IsFalse (success, "pre-check");
 139                         ExecutionContext.Run (ExecutionContext.Capture (), new ContextCallback (Callback), true);
 140                         Assert.IsTrue (success, "post-check");
 141                 }
 142
 143                 [Test]
 144                 [ExpectedException (typeof (InvalidOperationException))]
 145                 public void Run_SuppressFlow ()
 146                 {
 147                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed ());
 148                         AsyncFlowControl afc = ExecutionContext.SuppressFlow ();
 149                         Assert.IsTrue (ExecutionContext.IsFlowSuppressed ());
 150                         try {
 151                                 ExecutionContext.Run (ExecutionContext.Capture (), new ContextCallback (Callback), "Hello world.");
 152                         }
 153                         finally {
 154                                 afc.Undo ();
 155                         }
 156                 }
 157
 158                 [Test]
 159                 public void SuppressFlow ()
 160                 {
 161                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-1");
 162
 163                         AsyncFlowControl afc = ExecutionContext.SuppressFlow ();
 164                         Assert.IsTrue (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-3");
 165                         afc.Undo ();
 166
 167                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-4");
 168                 }
 169
 170                 [Test]
 171                 [ExpectedException (typeof (InvalidOperationException))]
 172                 public void SuppressFlow_Two_Undo ()
 173                 {
 174                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-1");
 175
 176                         AsyncFlowControl afc = ExecutionContext.SuppressFlow ();
 177                         Assert.IsTrue (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-2");
 178
 179                         AsyncFlowControl afc2 = ExecutionContext.SuppressFlow ();
 180                         Assert.IsTrue (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-3");
 181                         afc2.Undo ();
 182
 183                         // note: afc2 Undo return to the original (not the previous) state
 184                         Assert.IsFalse (ExecutionContext.IsFlowSuppressed (), "IsFlowSuppressed-4");
 185
 186                         // we can't use the first AsyncFlowControl
 187                         afc.Undo ();
 188                 }
 189         }
 190 }
 191
 192 #endif