public void TestAddAndReducehotel()
        {
            Residential r = new Residential();
            Player      p = new Player("Tom", 1000);

            r.setOwner(ref p);
            r.addHotel();
            Assert.AreEqual(1, r.getHotelCount());
            r.reduceHotel();
            Assert.AreEqual(0, r.getHotelCount());
        }