public int Tests(int aItemCount = 0,
int bItemCount = 0,
int cItemCount = 0,
int dItemCount = 0)
{
var aSku = new DiscountedSku(new Sku('A', 50), 3, 130);
var bSku = new DiscountedSku(new Sku('B', 30), 2, 45);
var cSku = new Sku('C', 20);
var dSku = new Sku('D', 15);
var pricing = new Pricing(aSku, bSku, cSku, dSku);
var checkout = new store.Checkout(pricing);
void callScan(string item, int itemCount)
{
var counter = itemCount;
while (counter != 0)
{
checkout.Scan(item);
counter--;
}
}
callScan("A", aItemCount);
callScan("B", bItemCount);
callScan("C", cItemCount);
callScan("D", dItemCount);
return(checkout.GetTotalPrice());
}
public void ItemDoesNotExist_ThrowException()
{
var pricingMock = new Mock <IPricing>();
pricingMock.Setup(x => x.TryGetSku(It.IsAny <string>(), out It.Ref <ISku> .IsAny)).Returns(false);
var target = new store.Checkout(pricingMock.Object);
Assert.Throws <ArgumentException>(() => target.Scan("A"));
}
public int Valid(
int aItemCount = 0,
int bItemCount = 0,
int cItemCount = 0,
int dItemCount = 0)
{
int getTotalForA()
=> ((aItemCount % 3) * 50) + ((aItemCount / 3) * 130);
var aSkuMock = new Mock <ISku>();
aSkuMock
.Setup(x => x.Name)
.Returns('A');
aSkuMock
.Setup(x => x.GetPrice(It.IsAny <IItemCount>()))
.Returns(getTotalForA());
int getTotalForB()
=> ((bItemCount % 2) * 30) + ((bItemCount / 2) * 45);
var bSkuMock = new Mock <ISku>();
bSkuMock
.Setup(x => x.Name)
.Returns('B');
bSkuMock
.Setup(x => x.GetPrice(It.IsAny <IItemCount>()))
.Returns(getTotalForB());
int getTotalForC()
=> cItemCount * 20;
var cSkuMock = new Mock <ISku>();
cSkuMock
.Setup(x => x.Name)
.Returns('C');
cSkuMock
.Setup(x => x.GetPrice(It.IsAny <IItemCount>()))
.Returns(getTotalForC());
int getTotalForD()
=> dItemCount * 15;
var dSkuMock = new Mock <ISku>();
dSkuMock
.Setup(x => x.Name)
.Returns('D');
dSkuMock
.Setup(x => x.GetPrice(It.IsAny <IItemCount>()))
.Returns(getTotalForD());
var availableSkus = new[]
{
aSkuMock.Object,
bSkuMock.Object,
cSkuMock.Object,
dSkuMock.Object
}.ToList().AsReadOnly();
var pricingMock = new Mock <IPricing>();
pricingMock.Setup(x => x.AvailableSkus)
.Returns(availableSkus);
void SetupTryGetSku(string item, ISku sku)
{
pricingMock
.Setup(x => x.TryGetSku(item, out It.Ref <ISku> .IsAny))
.Callback(new TryGetSkuCallBack((string _item, out ISku _sku) =>
{
_sku = sku;
}))
.Returns(true);
}
SetupTryGetSku("A", aSkuMock.Object);
SetupTryGetSku("B", bSkuMock.Object);
SetupTryGetSku("C", cSkuMock.Object);
SetupTryGetSku("D", dSkuMock.Object);
var target = new store.Checkout(pricingMock.Object);
void callScan(string item, int itemCount)
{
var counter = itemCount;
while (counter != 0)
{
target.Scan(item);
counter--;
}
}
callScan("A", aItemCount);
callScan("B", bItemCount);
callScan("C", cItemCount);
callScan("D", dItemCount);
return(target.GetTotalPrice());
}