pass gutter game

01-bowling_game/lib/bowling_game.rb

@@ -4,6 +4,6 @@ def roll(pins)
   end
 
   def score
-
+    0
   end
 end

01-bowling_game/spec/lib/bowling_game_spec.rb

@@ -1,11 +1,16 @@
 require 'bowling_game'
 
 describe BowlingGame do
+  let(:game) { BowlingGame.new }
+
   describe '#roll' do
 
   end
 
   describe '#score' do
-
+    it 'returns 0 for the gutter game' do
+      20.times { game.roll(0) }
+      expect(game.score).to eq 0
+    end
   end
 end