public void Buyer_closes_when_it_buys_enough_items()
{
Buyer buyer = CreateMonitoringBuyer("Buyer", numberToBuy: 5);
StockCommand command = buyer.Process(StockEvent.Purchase("Buyer", 5));
command.ShouldEqual(StockCommand.None());
buyer.Snapshot.State.ShouldEqual(BuyerState.Closed);
}
public void Purchase_method_returns_a_purchase_event()
{
StockEvent stockEvent = StockEvent.Purchase("some user", 1);
stockEvent.Type.ShouldEqual(StockEventType.Purchase);
stockEvent.BuyerName.ShouldEqual("some user");
stockEvent.NumberSold.ShouldEqual(1);
stockEvent.ToString().ShouldEqual("Event: PURCHASE; BuyerName: some user; NumberSold: 1;");
}
public void Buyer_does_not_react_to_a_purchase_event_related_to_another_buyer()
{
Buyer buyer = CreateMonitoringBuyer("Buyer");
StockCommand command = buyer.Process(StockEvent.Purchase("Some other buyer", 1));
command.ShouldEqual(StockCommand.None());
buyer.Snapshot.State.ShouldEqual(BuyerState.Monitoring);
buyer.Snapshot.BoughtSoFar.ShouldEqual(0);
}
public void Buyer_updates_items_bought_so_far_when_purchase_event_with_the_same_user_name_arrives()
{
Buyer buyer = CreateMonitoringBuyer("name", numberInStock: 10);
StockCommand command = buyer.Process(StockEvent.Purchase("name", 1));
command.ShouldEqual(StockCommand.None());
buyer.Snapshot.State.ShouldEqual(BuyerState.Monitoring);
buyer.Snapshot.BoughtSoFar.ShouldEqual(1);
buyer.Snapshot.NumberInStock.ShouldEqual(9);
}