public void getMaxIdHD()
        {
            //Arr
            var HoaDonUseCase = new HoaDonUseCase();

            //Act
            string actualCount = HoaDonUseCase.getMaxIdHD();

            //Assert
            Assert.IsTrue(actualCount != "1", "Danh sach hoa don dang rong");
        }
        [TestCase(" ")]      //failed
        public void GetUncheckBillIdByTableId(int mab)
        {
            //Arr
            var HoaDonUseCase = new HoaDonUseCase();

            //Act
            var actualCount = HoaDonUseCase.GetUncheckBillIdByTableId(mab);

            //Assert
            Assert.IsTrue(actualCount != "-1", "Ban nay chua thanh toan");
        }
        [TestCase(" ")]     //failed
        public void LaySoKhachHD(int mab)
        {
            //Arr
            var HoaDonUseCase = new HoaDonUseCase();

            //Act
            int actualCount = HoaDonUseCase.LaySoKhachHD(mab);

            //Assert
            Assert.IsTrue(actualCount != 1, "Khong hop le");
        }
        [TestCase(" ", " ")]          //failed
        public void SwitchTable(string mahd, int mab)
        {
            //Arr
            var HoaDonUseCase = new HoaDonUseCase();
            var expectedCount = 1;

            //Act
            int actualCount = HoaDonUseCase.SwitchTable(mahd, mab);

            //Assert
            Assert.IsTrue(actualCount == expectedCount, "Khong hop le");
        }
        [TestCase(" ", " ")]             //failed
        public void SuaSLKhachHoaDon(string mahd, int slkhach)
        {
            //Arr
            var HoaDonUseCase = new HoaDonUseCase();
            var expectedCount = 1;

            //Act
            int actualCount = HoaDonUseCase.SuaSLKhachHoaDon(mahd, slkhach);

            //Assert
            Assert.IsTrue(actualCount == expectedCount, "Khong hop le");
        }
        [TestCase(" ", " ", " ", " ")]              //failed
        public void InsertHoaDon(string manv, int mab, string makm, int slkhach)
        {
            //Arr
            var HoaDonUseCase = new HoaDonUseCase();
            var expectedCount = 1;

            //Act
            int actualCount = HoaDonUseCase.InsertHoaDon(manv, mab, makm, slkhach);

            //Assert
            Assert.IsTrue(actualCount == expectedCount, "Them that bai");
        }