/// <summary>
        ///  Return the list of PaymentMethods
        /// </summary>
        /// <returns>PaymentMethodList</returns>
        public async Task <IActionResult> GetPaymentMethod()
        {
            BaseResult <List <PaymentMethodViewModel> > paymentMethodResultFromCache = new BaseResult <List <PaymentMethodViewModel> >
            {
                Result = RedisCacheHelper.Instance.Get <List <PaymentMethodViewModel> >(Constants.CacheKeys.PaymentMethodList)
            };

            if (paymentMethodResultFromCache.Result == null || paymentMethodResultFromCache.Result.Count == 0)
            {
                BaseResult <List <PaymentMethod> > paymentMethodResult = await iPayment.GetPaymentMethod().ConfigureAwait(false);

                if (paymentMethodResult.IsError && paymentMethodResult.ExceptionMessage != null)
                {
                    return(new StatusCodeResult(500));
                }
                else if (paymentMethodResult.Result == null || paymentMethodResult.Result.Count == 0)
                {
                    return(NoContent()); //204
                }
                else
                {
                    var result = PaymentDataResponseMapper.MapPaymentMethod(paymentMethodResult);
                    RedisCacheHelper.Instance.Set <List <PaymentMethodViewModel> >(Constants.CacheKeys.PaymentMethodList, result.Result);
                    return(Ok(result)); //200
                }
            }
            return(Ok(paymentMethodResultFromCache)); //200
        }
        public async Task TestGetPaymentMethod_Positive_Predicate()
        {
            //Arrange
            var paymentMethod = new PaymentMethod()
            {
                Id = 1, Name = "RS", IsActive = true, IsDeleted = false, NameItemId = 1
            };
            var baseResult = new BaseResult <List <PaymentMethod> >()
            {
                Result = new List <PaymentMethod>()
                {
                    paymentMethod
                }
            };
            var pred = new Func <PaymentMethod, bool>(x => x.IsActive && !x.IsDeleted);

            iPaymentMethodLibrary.Setup(x => x.GetListByPredicate(It.Is <Func <PaymentMethod, bool> >(y => y.GetType() == pred.GetType()))).Returns(Task.FromResult(baseResult));
            //Act
            Task <BaseResult <List <PaymentMethod> > > result = paymentDataRepository.GetPaymentMethod();

            //Assert
            Assert.IsTrue(result.Result != null);
            Assert.IsTrue(result.Result is BaseResult <List <PaymentMethod> >);
        }