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

   1 //
   2 // TimerTest.cs - NUnit test cases for System.Threading.Timer
   3 //
   4 // Author:
   5 //   Zoltan Varga (vargaz@freemail.hu)
   6 //
   7 // (C) 2004 Novell, Inc (http://www.novell.com)
   8 //
   9
  10 using NUnit.Framework;
  11 using System;
  12 using System.Threading;
  13
  14 namespace MonoTests.System.Threading {
  15
  16         [TestFixture]
  17         public class TimerTest : Assertion {
  18
  19                 public int counter;
  20
  21                 private void Callback (object foo) {
  22                         counter ++;
  23                 }
  24
  25                 public void TestDueTime ()
  26                 {
  27                         counter = 0;
  28                         Timer t = new Timer (new TimerCallback (Callback), null, 200, Timeout.Infinite);
  29                         Thread.Sleep (50);
  30                         AssertEquals ("t0", 0, counter);
  31                         Thread.Sleep (200);
  32                         AssertEquals ("t1", 1, counter);
  33                         Thread.Sleep (500);
  34                         AssertEquals ("t2", 1, counter);
  35
  36                         t.Change (10, 10);
  37                         Thread.Sleep (500);
  38                         Assert ("t3", counter > 20);
  39                         t.Dispose ();
  40                 }
  41
  42                 public void TestChange ()
  43                 {
  44                         counter = 0;
  45                         Timer t = new Timer (new TimerCallback (Callback), null, 1, 1);
  46                         Thread.Sleep (500);
  47                         int c = counter;
  48                         Assert ("t1", c > 20);
  49                         t.Change (100, 100);
  50                         Thread.Sleep (500);
  51                         Assert ("t2", counter <= c + 6);
  52                         t.Dispose ();
  53                 }
  54
  55                 public void TestZeroDueTime () {
  56                         counter = 0;
  57
  58                         Timer t = new Timer (new TimerCallback (Callback), null, 0, Timeout.Infinite);
  59                         Thread.Sleep (100);
  60                         AssertEquals (1, counter);
  61                         t.Change (0, Timeout.Infinite);
  62                         Thread.Sleep (100);
  63                         AssertEquals (2, counter);
  64                         t.Dispose ();
  65                 }
  66
  67                 public void TestDispose ()
  68                 {
  69                         counter = 0;
  70                         Timer t = new Timer (new TimerCallback (CallbackTestDispose), null, 10, 10);
  71                         Thread.Sleep (200);
  72                         t.Dispose ();
  73                         Thread.Sleep (20);
  74                         int c = counter;
  75                         Assert (counter > 5);
  76                         Thread.Sleep (200);
  77                         AssertEquals (c, counter);
  78                 }
  79
  80                 private void CallbackTestDispose (object foo) {
  81                         counter ++;
  82                 }
  83
  84                 Timer t1;
  85                 public void TestDisposeOnCallback () {
  86                         counter = 0;
  87                         t1 = new Timer (new TimerCallback (CallbackTestDisposeOnCallback), null, 0, 10);
  88                         Thread.Sleep (200);
  89                         AssertNull (t1);
  90
  91                         counter = 2;
  92                         t1 = new Timer (new TimerCallback (CallbackTestDisposeOnCallback), null, 50, 0);
  93                         Thread.Sleep (200);
  94                         AssertNull (t1);
  95                 }
  96
  97                 private void CallbackTestDisposeOnCallback (object foo)
  98                 {
  99                         if (++counter == 3) {
 100                                 t1.Dispose ();
 101                                 t1 = null;
 102                         }
 103                 }
 104         }
 105 }