public void PreviousYear_IfPreviousYearDoesNotHaveTheSameDayInTheSameMonthThenCalculateHowManyDaysIsMissingAndAddThatToTheLastDayInTheSameMonthPreviousYear()
{
var someBirthday = new DateTime(2012, 2, 29, 17, 0, 0, 0, DateTimeKind.Local);
var previousYear = someBirthday.PreviousYear();
var expected = new DateTime(2011, 3, 1, 17, 0, 0, 0, DateTimeKind.Local);
DateAssert.AreEqual(expected, previousYear);
}
public void PreviousYear_ReturnsTheSameDateButPreviousYear()
{
var birthday = new DateTime(1976, 12, 31, 17, 0, 0, 0, DateTimeKind.Local);
var previousYear = birthday.PreviousYear();
var expected = new DateTime(1975, 12, 31, 17, 0, 0, 0, DateTimeKind.Local);
DateAssert.AreEqual(expected, previousYear);
}
