public void SetsTheMonthTo12IfMonthIs1(PositiveInt positiveInt)
{
var year = positiveInt.Get;
var calendarMonth = new CalendarMonth(year, 1);
var nextCalendarMonth = calendarMonth.Previous();
nextCalendarMonth.Month.Should().Be(12);
}
public void DecreasesTheYearIfMonthIs1(PositiveInt positiveInt)
{
var year = positiveInt.Get;
var calendarMonth = new CalendarMonth(year, 1);
var nextCalendarMonth = calendarMonth.Previous();
nextCalendarMonth.Year.Should().Be(year - 1);
}
public void DecrementsTheMonthIfMonthIsGreaterThan1(int month)
{
if (month == 1)
{
return;
}
var calendarMonth = new CalendarMonth(1234, month);
var previousCalendarMonth = calendarMonth.Previous();
previousCalendarMonth.Month.Should().Be(month - 1);
}
public void DoesNotDecrementTheYearWhenMonthIsGreaterThan1(int month)
{
if (month == 1)
{
return;
}
var year = 2020;
var calendarMonth = new CalendarMonth(year, month);
var nextCalendarMonth = calendarMonth.Previous();
nextCalendarMonth.Year.Should().Be(year);
}
private void addDaysFromPreviousMonth()
{
var firstDayOfMonth = CalendarMonth.DayOfWeek(1);
if (firstDayOfMonth == beginningOfWeek.ToDayOfWeekEnum())
{
return;
}
var previousMonth = CalendarMonth.Previous();
var daysInPreviousMonth = previousMonth.DaysInMonth;
var daysToAdd = ((int)firstDayOfMonth - (int)beginningOfWeek.ToDayOfWeekEnum() + 7) % 7;
for (int i = daysToAdd - 1; i >= 0; i--)
{
addDay(daysInPreviousMonth - i, previousMonth, false);
}
}