public void CanAddAPrice()
{
PriceAdded[] events =
{
new PriceAdded("A", 50)
};
var priceList = new PriceList();
priceList.Apply(events);
var price = priceList.PriceFor("A");
Assert.Equal(50, price);
}
public void CanGetPriceForMultipleSKU()
{
PriceAdded[] events =
{
new PriceAdded("A", 50),
new PriceAdded("B", 30)
};
var priceList = new PriceList();
priceList.Apply(events);
Assert.Equal(50, priceList.PriceFor("A"));
Assert.Equal(30, priceList.PriceFor("B"));
}
public void CanGetOnlyTheLatestPrice()
{
PriceAdded[] events =
{
new PriceAdded("A", 50),
new PriceAdded("A", 20)
};
var priceList = new PriceList();
priceList.Apply(events);
var price = priceList.PriceFor("A");
Assert.Equal(20, price);
}
public void ThrowsANiceExceptionWhenSKUIsUnknown()
{
PriceAdded[] events =
{
new PriceAdded("A", 50),
new PriceAdded("B", 30)
};
var priceList = new PriceList();
priceList.Apply(events);
var ex = Assert.Throws <PriceList.CannotProvidePriceForUnknownSKU>(
() => priceList.PriceFor("C"));
Assert.Contains("price for C", ex.Message);
}