calculating total score, collecting rolls

includes/game.h

@@ -1,7 +1,11 @@
 #ifndef GAME_H
 #define GAME_H
 
+#include <vector>
+
 class Game {
+  std::vector<int> rolls;
+
 public:
   void roll(int pins);
   int score() const;

sources/game.cpp

@@ -1,5 +1,13 @@
 #include "../includes/game.h"
 
-void Game::roll(int pins) {};
+void Game::roll(int pins) { rolls.push_back(pins); };
 
-int Game::score() const { return 0; }
+int Game::score() const {
+  int total;
+
+  for (int roll : rolls) {
+    total += roll;
+  }
+
+  return total;
+}

tests/test_game.cpp

@@ -6,4 +6,11 @@ TEST(GameTest, GutterGame) {
   for (int i = 0; i < 20; i++)
     game.roll(0);
   EXPECT_EQ(game.score(), 0);
+}
+
+TEST(GameTest, AllOnes) {
+  Game game;
+  for (int i = 0; i < 20; i++)
+    game.roll(1);
+  EXPECT_EQ(game.score(), 20);
 }