public void NextYear_IfNextYearDoesNotHaveTheSameDayInTheSameMonthThenCalculateHowManyDaysIsMissingAndAddThatToTheLastDayInTheSameMonthNextYear()
{
var someBirthday = new DateTimeOffset(2008, 2, 29, 17, 0, 0, 0, TimeSpan.Zero);
var nextYear = someBirthday.NextYear();
Assert.AreEqual(new DateTimeOffset(2009, 3, 1, 17, 0, 0, 0, TimeSpan.Zero), nextYear);
}
public void NextYear_ReturnsTheSameDateButNextYear()
{
var birthday = new DateTimeOffset(1976, 12, 31, 17, 0, 0, 0, TimeSpan.Zero);
var nextYear = birthday.NextYear();
Assert.AreEqual(new DateTimeOffset(1977, 12, 31, 17, 0, 0, 0, TimeSpan.Zero), nextYear);
}
