public void SimpleAddCouponOnCategory()
{
List <int> lst = new List <int>();
lst.Add(cola);
List <string> lst2 = new List <string>();
lst2.Add("drinks");
Assert.IsTrue(ss.addNewCoupons(zahi, store.getStoreId(), "coupon", 2, lst, lst2, 10, "20/6/2018", "") > -1);
Coupon c = ca.getCoupon("coupon", cola);
Assert.AreEqual(c.DueDate, "20/6/2018");
Assert.AreEqual(c.CouponId, "coupon");
Assert.AreEqual(c.Percentage, 10);
}