public void RemoveLotteryTicket() { LotteryTicket expected = new LotteryTicket("T3", "L1", 0, 0, 0, 0); handler.AddLotteryTicket(expected); LotteryTicket find = handler.GetLotteryTicket("T3"); Assert.AreEqual(expected, find); handler.RemoveLotteryTicket(expected); find = handler.GetLotteryTicket("T3"); Assert.IsNull(find); }