public void BuyItemWithoutPriceTest()
{
var itemWithoutBuyPrice = new CollectionItemInstance(Guid.NewGuid(), new ItemDefinition(Guid.NewGuid())
{
maxStackSize = 5, sellPrice = new [] { new CurrencyDecorator(_gold, 10f) }
});
_vendorCollection.Add(ToProduct(itemWithoutBuyPrice), 3);
var canBuy = _vendor.CanBuyFromVendor(_customer, itemWithoutBuyPrice, 1);
Assert.AreEqual(Errors.VendorProductHasNoPrice, canBuy.error);
Assert.IsFalse(canBuy.result);
}