public async Task GivenQuoteofOneVechicleShouldReturnValueBasedOnLowerPrice()
        {
            _proxy.GetQuote().Returns(Task.FromResult(GetSingleQoute()));
            var passengerService = new PassengerService(_proxy);

            var result = await passengerService.GetQuote(2);

            result.Count().Should().Be(1);
            result.First().TotalPrice.Should().Be(4);
        }
        public async Task <IEnumerable <ListingDto> > GetQuote(int passengerNumber)
        {
            var quote = await _jayrideChallegeProxy.GetQuote();

            var filteredListing = quote.Listings.Where(r => r.VehicleType.MaxPassengers >= passengerNumber);

            var listingDtos = filteredListing.OrderBy(r => r.PricePerPassenger).Select(p => new ListingDto
            {
                Name        = p.Name,
                TotalPrice  = p.PricePerPassenger * passengerNumber,
                VehicleType = p.VehicleType
            }).ToList();

            return(listingDtos);
        }