class DateFinderBase::Daily < DateFinderBase
  def dates_to_test(start_date)
    [start_date]
  end
  
  def next_start_date(start_date, interval)
    start_date + interval
  end
end

class DateFinderBase::Weekly < DateFinderBase
  def dates_to_test(start_date)
    start_date.rest_of_days_in_week
  end
  
  def next_start_date(start_date, interval)
    start_date.start_of_next_week(interval)
  end
end

class DateFinderBase::Monthly < DateFinderBase
  def dates_to_test(start_date)
    start_date.rest_of_days_in_month
  end
  
  def next_start_date(start_date, interval)
    start_date.start_of_next_month(interval)
  end
end

class DateFinderBase::Yearly < DateFinderBase
  def dates_to_test(start_date)
    start_date.rest_of_days_in_year
  end
  
  def next_start_date(start_date, interval)
    start_date.start_of_next_year(interval)
  end
end