public void LegacyImplementationIsInvalid()
{
var order = Order();
var languageService = IoC.Resolve <LanguageService>();
using (Solution.Instance.SystemToken.Use())
{
if (languageService.Get(CultureInfo.CurrentUICulture) == null)
{
languageService.Create(new Language(CultureInfo.CurrentUICulture));
}
}
var sut = new global::Litium.Foundation.Modules.ECommerce.Plugins.Payments.PaymentInfoRowFactory(languageService);
var result = sut.Create(order, null);
var rounding = result.Single().Rows
.Where(r => r.ReferenceType == global::Litium.Foundation.Modules.ECommerce.Payments.PaymentInfoRowType.RoundingOffAdjustment)
.Select(r => r.TotalAmountWithVAT)
.Single();
Assert.NotEqual(0, rounding);
}
public void VerifyDefaultLitiumImplementationIsStillBroken()
{
// The gist of the problem is that when Litium is calculating paymeninfo rows, each row is rounded to two decimals.
// This is just an assumption on Litium's part that all currencies (and therefor all payment providers) use two decimals.
//
// The problem is that when you round each row to two decimals, you end up with a different total than you would if you
// added all sums and then rounded. This causes payment info total to sometimes not match the orders grand total.
// Litium solves this by adding an adjustment fee to payment info. This however, causes other issues such as when
// you export the order rows to a third system that doesn't do this exact adjustment. they will come to a conclusion that
// the grand total is something else.
var order = new OrderCarrier
{
GrandTotal = 857.6700m,
TotalOrderRow = 686.1360m,
TotalOrderRowVAT = 171.5340m,
TotalVAT = 171.5340m,
OrderRows = new List <OrderRowCarrier>
{
new OrderRowCarrier
{
Quantity = 1,
TotalPrice = 129.4440m,
TotalVATAmount = 32.3610m,
UnitListPrice = 129.44400000m,
VATPercentage = 0.2500m
},
new OrderRowCarrier
{
Quantity = 1,
TotalPrice = 154.2840m,
TotalVATAmount = 38.5710m,
UnitListPrice = 154.28400000m,
VATPercentage = 0.2500m
},
new OrderRowCarrier
{
Quantity = 1,
TotalPrice = 192.9240m,
TotalVATAmount = 48.2310m,
UnitListPrice = 192.92400000m,
VATPercentage = 0.2500m
},
new OrderRowCarrier
{
Quantity = 1,
TotalPrice = 43.8840m,
TotalVATAmount = 10.9710m,
UnitListPrice = 43.88400000m,
VATPercentage = 0.2500m
},
new OrderRowCarrier
{
Quantity = 2,
TotalPrice = 165.6000m,
TotalVATAmount = 41.4000m,
UnitListPrice = 82.80000000m,
VATPercentage = 0.2500m
},
},
PaymentInfo = new List <PaymentInfoCarrier>
{
new PaymentInfoCarrier()
}
};
var languageService = IoC.Resolve <LanguageService>();
using (Solution.Instance.SystemToken.Use())
{
if (languageService.Get(CultureInfo.CurrentUICulture) == null)
{
languageService.Create(new Language(CultureInfo.CurrentUICulture));
}
}
var sut = new global::Litium.Foundation.Modules.ECommerce.Plugins.Payments.PaymentInfoRowFactory(languageService);
var result = sut.Create(order, null);
var rounding = result.Single().Rows
.Where(r => r.ReferenceType == global::Litium.Foundation.Modules.ECommerce.Payments.PaymentInfoRowType.RoundingOffAdjustment)
.Select(r => r.TotalAmountWithVAT)
.Single();
Assert.NotEqual(0, rounding);
}
