public void TestIsLeapDayTrue()
 {
     var date = new DateTime(2016, 2, 29);
     Assert.IsTrue(date.IsLeapDay());
 }
 public void TestIsLeapDayFalse()
 {
     var date = new DateTime(2015, 8, 20);
     Assert.IsFalse((date.IsLeapDay()));
 }