public void IntervalShouldBeSetTo1WhenStartWithNoParameterIsCalled()
{
var sut = new ScheduledTimer();
sut.Begin();
Assert.That(sut.TimerObject.Interval, Is.EqualTo(1));
}
public void ScheduleTimerShouldOnlyCallDoOnceEvenWithMultipleBeginRequests()
{
int count = 0;
var sut = new ScheduledTimer()
.Do(() => Interlocked.Increment(ref count))
.StartingAt(DateTime.Now)
.Every(TimeSpan.FromMilliseconds(1000));
Task.Run(() => sut.Begin());
Task.Run(() => sut.Begin());
Task.Run(() => sut.Begin());
Thread.Sleep(200);
Assert.That(count, Is.EqualTo(1));
}
public void StartWithNoParameterShouldUpdateTheStatusToRunning()
{
const ScheduledTimerStatus expected = ScheduledTimerStatus.Running;
var sut = new ScheduledTimer();
sut.Begin();
Assert.That(sut.Status, Is.EqualTo(expected));
}
public void StartThenStopShouldUpdateStatusToStopped()
{
const ScheduledTimerStatus expectedRunning = ScheduledTimerStatus.Running;
const ScheduledTimerStatus expectedStopped = ScheduledTimerStatus.Stopped;
var sut = new ScheduledTimer();
sut.Begin();
Assert.That(sut.Status, Is.EqualTo(expectedRunning));
sut.End();
Assert.That(sut.Status, Is.EqualTo(expectedStopped));
}
public void DisposeWithTimerRunningShouldStopTimerAndDisposeInternalTimer()
{
const ScheduledTimerStatus expected = ScheduledTimerStatus.Stopped;
var sut = new ScheduledTimer();
var disposed = false;
sut.TimerObject.Disposed += ((sender, args) => disposed = true);
sut.Begin();
sut.Dispose();
Assert.That(sut.Status, Is.EqualTo(expected));
Assert.That(disposed, Is.True);
}
public void IntervalUpdatedAfterStartShouldNotChangeTheIntervalUntilStartHasBeenCalled()
{
var sut = new ScheduledTimer();
sut.StartingAt(DateTime.Now.AddMilliseconds(100));
// Becuase of the nature of time, give the interval a second of leeway
Assert.That(sut.TimerObject.Interval, Is.InRange(100d, 200d));
sut.Every(TimeSpan.FromMilliseconds(200));
// Becuase of the nature of time, give the interval a second of leeway
Assert.That(sut.TimerObject.Interval, Is.InRange(100d, 200d));
sut.Begin();
Thread.Sleep(300);
Assert.That(sut.TimerObject.Interval, Is.EqualTo(200));
}
public void SetReplicationIntervalShouldUpdateTheTimerIntervalAndAutoResetAccordingly()
{
var sut = new ScheduledTimer();
var counter = 0;
sut.Do(() => Interlocked.Increment(ref counter)).Every(TimeSpan.FromMilliseconds(100));
Assert.That(sut.TimerObject.Interval, Is.EqualTo(100));
sut.Begin();
Thread.Sleep(550);
Assert.That(counter, Is.EqualTo(5));
}