public void TestFor_Valid_AddCoupon()
        {
            //Arrange
            BankCoupon bankCoupon = new BankCoupon()
            {
                CouponId     = 1,
                UserID       = 1,
                CouponImage  = "ss",
                CouponNumber = "1",
                Couponvalue  = 1,
                Created_at   = DateTime.Now
            };

            //Action
            var IsAdded = _UserService.AddCoupon(bankCoupon);

            //Assert
            Assert.True(IsAdded);
        }