public void SingleShot()
{
SimpleTimerHarness harness = new SimpleTimerHarness();
using (var timer = new VersionedTimer <int>(123, harness.Callback))
{
harness.ExpectDelays(100, Timeout.Infinite);
timer.Change(100, Timeout.Infinite, 1);
// Give the timer some rope to hang itself by if it's accidentally going to fire
// multiple times.
Thread.Sleep(500);
Assert.IsTrue(harness.Wait(), "Timer never fired.");
Assert.AreEqual(123, harness.ObservedState, "Timer fired with wrong state.");
Assert.AreEqual(1, harness.ObservedVersion, "Timer fired with wrong version.");
Assert.AreEqual(1, harness.Callbacks, "Timer fired wrong number of times.");
Assert.AreEqual(0, harness.TimeoutError.TotalMilliseconds, 30, "Timer timeout was inaccurate.");
}
}
public void MultiShot()
{
SimpleTimerHarness harness = new SimpleTimerHarness();
Stopwatch watch = new Stopwatch();
watch.Start();
watch.Reset();
using (var timer = new VersionedTimer <int>(123, harness.Callback))
{
harness.ExpectDelays(75, 150);
timer.Change(75, 150, 1);
watch.Start();
Thread.Sleep(75 + 150 * 4);
for (int i = 1; i <= 5; i++)
{
Assert.IsTrue(harness.Wait(), string.Format("Timer period #{0} never fired.", i));
}
timer.Change(Timeout.Infinite, Timeout.Infinite, 2);
watch.Stop();
TimeSpan elapsed = watch.Elapsed;
int numFirings = (int)((elapsed.TotalMilliseconds - 75.0) / 150.0) + 1;
Assert.AreEqual(123, harness.ObservedState, 123, "Timer fired with wrong state.");
Assert.AreEqual(1, harness.ObservedVersion, "Timer fired with wrong version.");
Assert.AreEqual(numFirings, harness.Callbacks, "Timer fired wrong number of times.");
Assert.AreEqual(0, harness.TimeoutError.TotalMilliseconds, 30, "Timer timeout was inaccurate.");
Assert.AreEqual(0, harness.PeriodErrors.Average(x => x.TotalMilliseconds), 30, "Timer period was inaccurate.");
Assert.AreEqual(0, harness.PeriodErrors.Max(x => x.TotalMilliseconds), 30, "Timer period was inaccurate.");
Trace.WriteLine(string.Format(
"{0} callbacks occurred in {1:0.000} ms.",
harness.Callbacks, elapsed.TotalMilliseconds
));
}
}
