public void DifficultyChangesTestScriptSimplePasses()
        {
            MoleBehaviour Mole  = mole.AddComponent <MoleBehaviour>();
            ScoreUpdate   Score = score.AddComponent <ScoreUpdate>();

            Score.increase(20000);
            Mole.UpdateDifficulty();
            Assert.AreEqual(speed, Mole.speed);
            Score.setScoreValue(0);
        }