public void OnBuyItemFromVendorEventTest()
{
// Arrange
BuyFromVendorResult <IItemInstance> boughtResult = null;
int eventCount = 0;
_vendor.OnBoughtFromVendor += (sender, result) =>
{
boughtResult = result;
eventCount++;
};
_vendorCollection.Add(_product1, 10);
_customerCurrencies.Add(_gold, 100);
// Act
var bought = _vendor.BuyFromVendor(_customer, _item1, 2);
// Assert
Assert.IsNull(bought.error);
Assert.AreEqual(1, eventCount);
Assert.AreEqual(boughtResult.amount, 2);
Assert.AreEqual(boughtResult.item, _product1);
Assert.AreEqual(boughtResult.currencies[0].currency, _gold);
}