Another tennis game with mono, rake and vim. start -> love all : red
start -> love all : green
game -> player1/2 : blue
game.start() extract field : blue
0:0 -> love all : red
0:0 -> love all : green
game.start = game.at(0,0) : blue
15:15 -> fifteen all : red
15:15 -> fifteen all : green
15:0 -> fifteen love : red
15:0 -> fifteen love : green
point to score translate : blue
0:30 -> love thirty : red
0:30 -> love thirty : green
40:30 -> forty thirty : red
40:30 -> forty thirty : green
point to score map : blue
40:40 -> deuce : red
40:40 -> deuce : green
equalize point comparisons : blue