public void GetPromotionList_ReturnNotNull()
        {
            //Arr
            var KhuyenMaiUseCase = new KhuyenMaiUseCase();

            //Act
            List <KHUYENMAI> khuyenmailist = KhuyenMaiUseCase.LoadPromotionList();
            int actualCount = khuyenmailist.Count;

            //Assert
            Assert.IsTrue(actualCount > 0, "Danh sach khuyen mai dang rong");
        }
        public void XoakhuyenMai(string makm)
        {
            //Arr
            var KhuyenMaiUseCase = new KhuyenMaiUseCase();
            var expectedCount    = 1;

            //Act
            int xoakhuyenmai = KhuyenMaiUseCase.XoaKhuyenMai(makm);
            var actualCount  = xoakhuyenmai;

            //Assert
            Assert.IsTrue(actualCount == expectedCount, "Xoa that bai");
        }
        [TestCase(" ", "8/3", "08/03/2021", "09/03/2021", "15")]                //failed


        public void SuaKhuyenMai(string makm, string tenkm, string ngaybd, string ngaykt, string phantramkm)
        {
            //Arr
            var KhuyenMaiUseCase = new KhuyenMaiUseCase();
            var expectedCount    = 1;

            //Act
            int suakhuyenmai = KhuyenMaiUseCase.SuaKhuyenMai(makm, tenkm, ngaybd, ngaykt, phantramkm);
            var actualCount  = suakhuyenmai;

            //Assert
            Assert.IsTrue(actualCount == expectedCount, "Sua that bai");
        }
        [TestCase(" ")]         //failed
        public void TimKhuyenMai(string noidung)
        {
            //Arr
            var KhuyenMaiUseCase = new KhuyenMaiUseCase();
            var expectedCount    = 1;

            //Act
            List <KHUYENMAI> timkhuyenmai = KhuyenMaiUseCase.TimKhuyenMai(noidung);
            var actualCount = timkhuyenmai.Count;

            //Assert
            Assert.IsTrue(actualCount == expectedCount, "Khong tim thay khuyen mai");
        }