public void TestResolvedFields()
        {
            var ticketValidator = new TicketValidator();

            ticketValidator.AddRule("class", 0, 1, 4, 19);
            ticketValidator.AddRule("row", 0, 5, 8, 19);
            ticketValidator.AddRule("seat", 0, 13, 16, 19);
            ticketValidator.IsTicketValid(new int[] { 3, 9, 18 });
            ticketValidator.IsTicketValid(new int[] { 15, 1, 5 });
            ticketValidator.IsTicketValid(new int[] { 5, 14, 9 });
            ticketValidator.GetResolvedFields().OrderBy(d => d.Key).ShouldBe(
                new Dictionary <string, int> {
                { "class", 1 },
                { "row", 0 },
                { "seat", 2 },
            }
                );
        }