private static CalendarDay TweakBy(
this CalendarDay calendarDay,
int amount,
CalendarDayComponent componentToTweak)
{
if (componentToTweak == CalendarDayComponent.Day)
{
var updatedDateTime = calendarDay.ToDateTime().AddDays(amount);
var result = new CalendarDay(updatedDateTime.Year, (MonthOfYear)updatedDateTime.Month, (DayOfMonth)updatedDateTime.Day);
return(result);
}
if (componentToTweak == CalendarDayComponent.Month)
{
var updatedDateTime = calendarDay.ToDateTime().AddMonths(amount);
var result = new CalendarDay(updatedDateTime.Year, (MonthOfYear)updatedDateTime.Month, (DayOfMonth)updatedDateTime.Day);
return(result);
}
if (componentToTweak == CalendarDayComponent.Year)
{
var updatedDateTime = calendarDay.ToDateTime().AddYears(amount);
var result = new CalendarDay(updatedDateTime.Year, (MonthOfYear)updatedDateTime.Month, (DayOfMonth)updatedDateTime.Day);
return(result);
}
throw new NotSupportedException("this calendar day component is not supported: " + componentToTweak);
}
private static CalendarDay Tweak(
this CalendarDay calendarDay,
CalendarDayComponent componentToTweak)
{
if (componentToTweak == CalendarDayComponent.Day)
{
var tweakedDay = A.Dummy <DayOfMonth>().ThatIs(
d =>
d != calendarDay.DayOfMonth &&
DoesNotThrow(() => new CalendarDay(calendarDay.Year, calendarDay.MonthOfYear, d)));
var result = new CalendarDay(calendarDay.Year, calendarDay.MonthOfYear, tweakedDay);
return(result);
}
if (componentToTweak == CalendarDayComponent.Month)
{
var tweakedMonth = A.Dummy <MonthOfYear>().ThatIs(
m =>
m != calendarDay.MonthOfYear &&
DoesNotThrow(() => new CalendarDay(calendarDay.Year, m, calendarDay.DayOfMonth)));
var result = new CalendarDay(calendarDay.Year, tweakedMonth, calendarDay.DayOfMonth);
return(result);
}
if (componentToTweak == CalendarDayComponent.Year)
{
var tweakedYear = A.Dummy <PositiveInteger>().ThatIs(
y =>
y != calendarDay.Year &&
y <= 9999 &&
DoesNotThrow(() => new CalendarDay(y, calendarDay.MonthOfYear, calendarDay.DayOfMonth)));
var result = new CalendarDay(tweakedYear, calendarDay.MonthOfYear, calendarDay.DayOfMonth);
return(result);
}
throw new NotSupportedException("this calendar day component is not supported: " + componentToTweak);
}
