public void Closed_buyer_does_not_react_to_further_messages()
{
Buyer buyer = CreateClosedBuyer(maximumPrice: 10);
StockCommand command = buyer.Process(StockEvent.Price(10, 10));
command.ShouldEqual(StockCommand.None());
buyer.Snapshot.State.ShouldEqual(BuyerState.Closed);
}
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 Buyer_does_not_buy_when_price_event_with_too_high_price_arrives()
{
var buyer = CreateJoiningBuyer(maximumPrice: 10);
StockCommand command = buyer.Process(StockEvent.Price(20, 5));
command.ShouldEqual(StockCommand.None());
buyer.SnapshotShouldEqual(BuyerState.Monitoring, 20, 5, 0);
}
public void Closes_when_item_closes()
{
var buyer = CreateJoiningBuyer();
StockCommand command = buyer.Process(StockEvent.Close());
command.ShouldEqual(StockCommand.None());
buyer.SnapshotShouldEqual(BuyerState.Closed, 0, 0, 0);
}
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);
}
private void StockMessageRecieved(string message)
{
StockEvent stockEvent = StockEvent.From(message);
StockCommand stockCommand = _buyer.Process(stockEvent);
if (stockCommand != StockCommand.None())
{
_connection.SendMessage(stockCommand.ToString());
}
_repository.Save(ItemId, _buyer);
Notify(nameof(CurrentPrice));
Notify(nameof(NumberInStock));
Notify(nameof(BoughtSoFar));
Notify(nameof(State));
}