public void ReturnTheNumberOfYears() { DateTime bDay = new DateTime(1972, 7, 27); Person Bob = new Person("Bob", "Gehred", bDay, "21111111-2222-3333-4444-555555555555"); DateTime testTime = new DateTime(2008, 7, 27); Age myAge = Bob.YearsOld(testTime); int expected = 36; Assert.AreEqual(expected, myAge.Year); Assert.AreEqual(0, myAge.Month); Assert.AreEqual(0, myAge.Day); }