public void TestSleep()
{
WakeUpCommand wakeup = new WakeUpCommand();
ActiveObjectEngine e = new ActiveObjectEngine();
// Building multithreaded systems using variations of this technique has been, and will continue to be, a
// very common practice.Threads of this kind have been known as run - to - completion tasks(RTC);
// each Command instance runs to completion before the next Command instance can run.The name RTC
// implies that the Command instances do not block.
// The fact that the Command instances all run to completion gives RTC threads the interesting advantage
// that they all share the same runtime stack. Unlike the threads in a traditional multithreaded system,
// it is not necessary to define or allocate a separate runtime stack for each RTC thread.This can be a
// powerful advantage in memory - constrained systems with many threads.
SleepCommand c = new SleepCommand(1000, e, wakeup);
e.AddCommand(c);
DateTime start = DateTime.Now;
e.Run();
DateTime stop = DateTime.Now;
double sleepTime = (stop - start).TotalMilliseconds;
Assert.IsTrue(sleepTime >= 1000, "SleepTime " + sleepTime + " expected > 1000");
Assert.IsTrue(sleepTime <= 1100, "SleepTime " + sleepTime + " expected < 1100");
Assert.IsTrue(wakeup.executed, "Command Executed");
}
public SleepCommand(long milliseconds, ActiveObjectEngine e, Command wakeupCommand)
{
sleepTime = milliseconds;
engine = e;
this.wakeupCommand = wakeupCommand;
}