public void ClearTest() { var timePeriods = new TimePeriodChain(); Assert.AreEqual(timePeriods.Count, 0); timePeriods.Clear(); Assert.AreEqual(timePeriods.Count, 0); SchoolDay schoolDay = new SchoolDay(); Assert.AreEqual(schoolDay.Count, 7); schoolDay.Clear(); Assert.AreEqual(schoolDay.Count, 0); }