public void TimerService_ShouldRunNewTimer_OnRunNewTimer()
{
var timerService = new TimerService();
var settingsMock = new Mock <ISimulationSettings>();
settingsMock.Setup(s => s.IncomingFlights).Returns(new Mock <List <Flight> >().Object);
settingsMock.Setup(s => s.OutgoingFlights).Returns(new Mock <List <Flight> >().Object);
settingsMock.Setup(s => s.Multiplier).Returns(1);
timerService.SetSettings(settingsMock.Object);
timerService.RunNewTimer();
Thread.Sleep(2000);
timerService.Stop();
timerService.GetTimeSinceSimulationStart().TotalMilliseconds.ShouldBeGreaterThan(2000);
timerService.RunNewTimer();
timerService.Stop();
timerService.GetTimeSinceSimulationStart().TotalMilliseconds.ShouldBeLessThan(2000);
}