Iteration #12: write test -> testRandomThrowSecondBall(), test failure
Iteration #12: minimal code, test success
Iteration #13: write test -> testPlayLastFrame()
Iteration #13: compilable code, test failure
Iteration #13: minimal code, test success
Iteration #14: write test -> testPlayLastFrameWithSpare()
Iteration #14: compilable code, test failure
Iteration #14: minimal code, test success
Iteration #15: write test -> testPlayLastFrameWithStrike(), compilable code, test failure
Iteration #14: minimal code, test success
Iteration #16: write test -> testPlayFramesAllStrikes()
Iteration #16: compilable code, test failure
Iteration #16: minimal code, test success
Iteration #17: write test -> testPlay()
Iteration #17: compilable code, test failure
Iteration #17: minimal code, test success
Add main class