public void AOC_2020_Day07a()
        {
            var input  = File.ReadAllText(".//Content2//2020/Day07.txt");
            var answer = AOC_2020_Day07_Answer.CalculateContainingBags(input);

            answer.Should().Be(355);
        }
        public void calculate_the_number_of_bags_that_could_contain_a_shiny_gold_bag()
        {
            var input  = @"light red bags contain 1 bright white bag, 2 muted yellow bags.
dark orange bags contain 3 bright white bags, 4 muted yellow bags.
bright white bags contain 1 shiny gold bag.
muted yellow bags contain 2 shiny gold bags, 9 faded blue bags.
shiny gold bags contain 1 dark olive bag, 2 vibrant plum bags.
dark olive bags contain 3 faded blue bags, 4 dotted black bags.
vibrant plum bags contain 5 faded blue bags, 6 dotted black bags.
faded blue bags contain no other bags.
dotted black bags contain no other bags.";
            var answer = AOC_2020_Day07_Answer.CalculateContainingBags(input);

            answer.Should().Be(4);
        }