public void DeleteTest()
        {
            using (var trans = TransHelper.NewScope())
            {
                //  arrange

                //  act
                _purchaseDal.Delete("A1");
            }
        }
 public IResult Delete(Purchase entity)
 {
     _purchaseDal.Delete(entity);
     return(new SuccessResult(Messages.SuccessDeleted));
 }