public void getKeyTest2()
        {
            BathroomSecurity test = new BathroomSecurity();
            char             key  = test.getKey("LURDL", 'D');

            Assert.AreEqual(key, 'B');
        }
        public void getKeyTest3()
        {
            BathroomSecurity test = new BathroomSecurity();
            char             key  = test.getKey("UUUUD", 'D');

            Assert.AreEqual(key, '3');
        }
        public void getKeyTest1()
        {
            BathroomSecurity test = new BathroomSecurity();
            char             key  = test.getKey("RRDDD", '5');

            Assert.AreEqual(key, 'D');
        }