public void ThreeYear()
 {
     var yearsOfData = new YearsOfData();
     Assert.AreEqual("2009-10,2010-11,2011-12", yearsOfData.ThreeYear(2012));
 }
 public void OneYear()
 {
     var yearsOfData = new YearsOfData();
     Assert.AreEqual("2011-12", yearsOfData.OneYear(2012));
     Assert.AreEqual("1999-00", yearsOfData.OneYear(2000));
 }