public void AddMillsecondTest() { int hour = 1; int mins = 2; int second = 3; var target = new Time(hour, mins, second); int millsecond = 3; target = target.AddMillseconds(millsecond); var expcet = new TimeSpan(0, 1, 2, 3, 3); Assert.AreEqual(expcet.Ticks, expcet.Ticks); }