public void provide_custom_culture()
        {
            var customWorkingDayCultureInfo = new CustomWorkingDayCultureInfo();
            var today       = DateTime.Today;
            var next_friday = today.NextDayOfWeek(DayOfWeek.Friday);

            Assert.IsTrue(today.IsWorkingDay(customWorkingDayCultureInfo) == false);
            Assert.IsTrue(next_friday.IsWorkingDay(customWorkingDayCultureInfo) == false);
        }
        public void provide_custom_culture()
        {
            var customWorkingDayCultureInfo = new CustomWorkingDayCultureInfo();
            var today = DateTime.Today;
            var next_friday = today.NextDayOfWeek(DayOfWeek.Friday);

            Assert.IsTrue(today.IsWorkingDay(customWorkingDayCultureInfo) == false);
            Assert.IsTrue(today.IsHoliday(customWorkingDayCultureInfo));
            Assert.IsTrue(next_friday.IsWorkingDay(customWorkingDayCultureInfo) == false);
        }