tennis.rb

require 'rspec'

class Match
	attr_reader :players, :winner

	def initialize
		@players = [TennisPlayer.new] * 2
	end

	def winner
		@players.each do |player|
			if player.score == 3
				@winner = player
			end
		end
		@winner
	end

	def start_game(player)
		skill = rand(0..1)
		if skill == 0
			player.miss
		else
			player.hit
		end
	end

	def officiate_the_match
		@players.each do |player|
			if player.missed == false
				player.score_a_point
				winner
			end
		end
	end

	def play_the_match
		until winner
			@players.each do |player|
				start_game(player)
			end
			officiate_the_match
		end
	end

end


class TennisPlayer
	attr_accessor :missed, :score, :skill
	def initialize
		@missed = false
		@score = 0
	end

	def hit
		@missed = false
	end

	def miss
		@missed = true
	end

	def score_a_point
		@score += 1
	end

	def compete
		@skill = rand(0..1)
	end
end





describe Match do

	let(:match) { Match.new }
	it 'should have two players' do
		match.players.count.should eq(2)
	end

	it 'should not have a winner until started' do
		match.winner.should eq(nil)
	end

	it 'should have a winner after starting' do
		match.play_the_match
		match.winner.should_not eq(nil)
	end

end

describe TennisPlayer do
	let(:player) { TennisPlayer.new }
	it 'should hit the ball' do
		player.missed = true
		player.hit
		player.missed.should eq(false)
	end

	it 'should miss the ball' do
		player.miss
		player.missed.should eq(true)
	end

	it 'score should start at zero' do
		player.score.should eq(0)
	end
end

I'm not happy with this, the AI and functionality with choosing a winner is too flawed. I'm sorry, it's weak.