BowlingSecondPractice.ScoreBoard.PlayFrame C# (CSharp) Method

        public void PlayFrame(int firstBall, int secondBall, int thirdBall = -1)
        {
            var frame = CreateFrame(firstBall, secondBall, thirdBall);
            if (frames.Count > 0)
            {
                frames.Last().NextFrame = frame;
            }
            frames.Add(frame);
        }

        public void ScoreBoardShouldCalculateTotalScoreOfTenFrames()
        {
            //given
            var scoreBoard = new ScoreBoard();

            //when
            scoreBoard.PlayFrame(3, 4); //7
            scoreBoard.PlayFrame(2, 4); //6
            scoreBoard.PlayFrame(5, 4); //9
            scoreBoard.PlayFrame(6, 4); //20
            scoreBoard.PlayFrame(10, 0); //18
            scoreBoard.PlayFrame(3, 5); //8
            scoreBoard.PlayFrame(3, 7); //13
            scoreBoard.PlayFrame(3, 5); //8
            scoreBoard.PlayFrame(2, 7); //9
            scoreBoard.PlayFrame(2, 8, 3); //13

            var totalScore = scoreBoard.TotalScore;

            //then
            Assert.AreEqual(111, totalScore);
        }