private void Play(int ballsToPlayer1, int ballsToPlayer2, string expectedScore)
{
tennis = new TennisGame_Dirty();
for (int i = 0; i < ballsToPlayer1; i++)
{
tennis.Player1WinsTheBall();
}
for (int i = 0; i < ballsToPlayer2; i++)
{
tennis.Player2WinsTheBall();
}
Assert.Equal(expectedScore, tennis.PrintScore());
}