2 // TimerTest.cs - NUnit test cases for System.Threading.Timer
5 // Zoltan Varga (vargaz@freemail.hu)
6 // Rafael Ferreira (raf@ophion.org)
8 // (C) 2004 Novell, Inc (http://www.novell.com)
11 using NUnit.Framework;
13 using System.Threading;
14 using System.Collections;
16 namespace MonoTests.System.Threading {
18 public class TimerTest {
19 // this bucket is used to avoid non-theadlocal issues
27 //creating a timer that will never run just to make sure the
28 // scheduler is warm for the unit tests
29 // this makes fair for the "DueTime" test since it
30 // doesn't have to wait for the scheduler thread to be
32 new Timer (null, null, Timeout.Infinite, 0);
36 public void TestDueTime ()
38 Bucket bucket = new Bucket();
39 Timer t = new Timer (new TimerCallback (Callback), bucket, 200, Timeout.Infinite);
41 Assert.AreEqual (0, bucket.count, "#1");
43 Assert.AreEqual (1, bucket.count, "#2");
45 Assert.AreEqual (1, bucket.count, "#3");
48 Assert.IsTrue(bucket.count > 20, "#4");
53 public void TestChange ()
55 Bucket bucket = new Bucket();
56 Timer t = new Timer (new TimerCallback (Callback), bucket, 1, 1);
59 Assert.IsTrue(c > 20, "#1");
62 Assert.IsTrue(bucket.count <= c + 20, "#2");
67 public void TestZeroDueTime ()
69 Bucket bucket = new Bucket();
71 Timer t = new Timer (new TimerCallback (Callback), bucket, 0, Timeout.Infinite);
73 Assert.AreEqual (1, bucket.count, "#1");
74 t.Change (0, Timeout.Infinite);
76 Assert.AreEqual (2, bucket.count, "#2");
81 public void TestDispose ()
83 Bucket bucket = new Bucket();
84 Timer t = new Timer (new TimerCallback (Callback), bucket, 10, 10);
89 Assert.IsTrue (bucket.count > 5, "#1");
91 Assert.AreEqual (c, bucket.count, "#2");
95 public void TestDispose2 ()
97 Timer t = new Timer (new TimerCallback (Callback), null, 10, 10);
103 public void TestHeavyCreationLoad ()
105 Bucket b = new Bucket ();
106 for (int i = 0; i < 500; ++i)
107 new Timer (new TimerCallback (Callback), b, 10,
109 // 1000 * 10 msec = 10,000 msec or 10 sec - if everything goes well
110 // we add some slack to cope with timing issues caused by system load etc.
111 for (int i = 0; i < 20; ++i) {
116 Assert.AreEqual (500, b.count);
121 public void TestQuickDisposeDeadlockBug ()
124 Bucket b = new Bucket ();
125 ArrayList timers = new ArrayList();
127 Timer t = new Timer (new TimerCallback (Callback),
128 b, 10, Timeout.Infinite);
133 Thread.Sleep (11 * 500);
137 public void TestInt32MaxDelay ()
139 Bucket b = new Bucket ();
140 new Timer (new TimerCallback (Callback), b, Int32.MaxValue,
143 Assert.AreEqual (0, b.count);
147 public void TestInt32MaxPeriod ()
149 Bucket b = new Bucket ();
150 new Timer (new TimerCallback (Callback), b, 0,
153 Assert.AreEqual (1, b.count);
158 public void TestNegativeDelay ()
160 Bucket b = new Bucket ();
162 new Timer (new TimerCallback (Callback), b, -10,
165 } catch (ArgumentOutOfRangeException) {
171 public void TestNegativePeriod ()
173 Bucket b = new Bucket ();
175 new Timer (new TimerCallback (Callback), b, 0,
178 } catch (ArgumentOutOfRangeException) {
184 public void TestDelayZeroPeriodZero()
186 Bucket b = new Bucket();
187 Timer t = new Timer(new TimerCallback(Callback),b,0,0);
189 t.Change (int.MaxValue, Timeout.Infinite);
190 // since period is 0 the callback should happen once (bug #340212)
191 Assert.IsTrue(b.count == 1);
196 public void TestDisposeOnCallback ()
199 t1 = new Timer (new TimerCallback (CallbackTestDisposeOnCallback), t1, 0, 10);
201 Assert.IsNotNull (t1);
205 private void CallbackTestDisposeOnCallback (object foo)
207 ((Timer) foo).Dispose ();
210 private void Callback (object foo)
212 Bucket b = foo as Bucket;
213 Interlocked.Increment (ref b.count);