Koden til Mathias, Imtiaz og meg fra tennis-kataen på Bergen Codingdojo 11.09.2013 http://www.meetup.com/BergenCodingDojo/events/136912282/

Tennis.cs

using System;
using System.Linq;
using NUnit.Framework;
using Should;

namespace Tennis
{
    [TestFixture]
    public class TennisTests
    {
        [Test]
        public void should_score_points()
        {
            Scorer.Score("A").Points.A.ShouldEqual(1);
            Scorer.Score("AAAABB").Points.A.ShouldEqual(4);
            Scorer.Score("AAAABB").Points.B.ShouldEqual(2);
        }

        [Test]
        public void should_game()
        {
            var result = Scorer.Score("AAAAA AAAABB");
            result.Sets.A.ShouldEqual(0);
            result.Sets.B.ShouldEqual(0);
            result.Games.A.ShouldEqual(1);
            result.Games.B.ShouldEqual(0);
            result.Points.A.ShouldEqual(4);
            result.Points.B.ShouldEqual(2);
        }

        [Test]
        public void should_score_sets()
        {
            var result = Scorer.Score("AAAAA AAAAA AAAAA AAAAA AAAAA AAAAA");
            result.Sets.A.ShouldEqual(1);
            result.Sets.B.ShouldEqual(0);
            result.Games.A.ShouldEqual(0);
            result.Games.B.ShouldEqual(0);
            result.Points.A.ShouldEqual(0);
            result.Points.B.ShouldEqual(0);
        }
    }

    public class Scorer
    {
        public static Result Score(string input)
        {
            var result = new Result();
            var winners = input.ToCharArray();
            foreach (var winner in winners.Where(x => x != ' '))
            {
                var pointDiff = Math.Abs(result.Points.A - result.Points.B);
                var gameDiff = Math.Abs(result.Games.A - result.Games.B);

                if (winner == 'A')
                {
                    if (result.Points.A >= 4 && pointDiff >= 2)
                    {
                        if (result.Games.A >= 5 && gameDiff >= 2)
                        {
                            result.Games.A = 0;
                            result.Games.B = 0;
                            result.Points.A = 0;
                            result.Points.B = 0;

                            result.Sets.A++;
                            continue;
                        }
                        result.Points.A = 0;
                        result.Points.B = 0;

                        result.Games.A++;
                        continue;
                    }
                    result.Points.A++;
                }
                else
                {
                    if (result.Points.B >= 4 && pointDiff >= 2)
                    {
                        if (result.Games.B >= 6 && gameDiff >= 2)
                        {
                            result.Games.A = 0;
                            result.Games.B = 0;
                            result.Points.A = 0;
                            result.Points.B = 0;

                            result.Sets.B++;
                            continue;
                        }
                        result.Points.A = 0;
                        result.Points.B = 0;

                        result.Games.B++;
                        continue;
                    }
                    result.Points.B++;
                }
            }
            return result;
        }

    }

    public class Result
    {
        public Result()
        {
            Sets = new Monkey();
            Games = new Monkey();
            Points = new Monkey();
        }

        public Monkey Sets { get; set; }
        public Monkey Games { get; set; }
        public Monkey Points { get; set; }
    }

    public class Monkey
    {
        public int A { get; set; }
        public int B { get; set; }
    }
}