public void BookingManager_PlaceBooking_ArrivalDateSunday()
        {
            Booking instance = new Booking
            {
                ClientName     = "John Doe",
                ArrivalDate    = new DateTime(2009, 8, 9),
                NumberOfGuests = 2
            };

            // will throw ValidationException
            BookingManager.PlaceBooking(instance);
        }
        public void BookingManager_PlaceBooking_Valid()
        {
            Booking instance = new Booking
            {
                ClientName     = "John Doe",
                ArrivalDate    = new DateTime(2009, 8, 13),
                NumberOfGuests = 2
            };

            try
            {
                // should not throw a ValidationException
                BookingManager.PlaceBooking(instance);
            }
            catch (ValidationException)
            {
                Assert.Fail();
            }
        }