public void IsTollFreeDate_PublicHoliday_ReturnsTrue()
{
IHolidayLookup holidayLookup = Substitute.For <IHolidayLookup>();
var date = new DateTime(2017, 11, 27);
holidayLookup.IsPublicHoliday(date).Returns(true);
var tollFeeCalculator = new TollFeeCalculator(holidayLookup);
tollFeeCalculator.IsTollFreeDate(date).ShouldBeTrue();
}
/// <summary>
/// Returns true if a passage on a certain date is not subject for a toll fee.
/// </summary>
internal bool IsTollFreeDate(DateTime date)
{
return(date.DayOfWeek == DayOfWeek.Saturday ||
date.DayOfWeek == DayOfWeek.Sunday ||
holidayLookup.IsPublicHoliday(date));
}