public void MoveTest()
{
DateTime now = ClockProxy.Clock.Now;
SchoolDay schoolDay = new SchoolDay( now );
TimePeriodCollection timePeriods = new TimePeriodCollection( schoolDay );
DateTime startDate = schoolDay.Start;
DateTime endDate = schoolDay.End;
TimeSpan startDuration = timePeriods.Duration;
TimeSpan duration = Duration.Hour;
timePeriods.Move( duration );
Assert.AreEqual( timePeriods.Start, startDate.Add( duration ) );
Assert.AreEqual( timePeriods.End, endDate.Add( duration ) );
Assert.AreEqual( timePeriods.Duration, startDuration );
}