public void Valid_Ask_With_Wrong_StockID_Order_Should_NOT_Place()
{
//arrange
var ask = Ask.New(NewId(), "Wrong", units: 4, price: 100);
//act
_matcher.Tell(ask);
//assert
var askResult = ExpectMsg <AskResult>(r => Assert.False(r.Success, r.Reason));
Assert.Equal("StockId doesn't match", askResult.Reason);
}
static void Main(string[] args)
{
using var system = ActorSystem.Create("trade");
var matcher = system.ActorOf(Props.Create(() => new Matcher("MSFT")));
// Place a few orders
matcher.Tell(Ask.New("1", "MSFT", units: 50, price: 99.00m), ActorRefs.Nobody);
matcher.Tell(Bid.New("2", "MSFT", units: 100, price: 100.00m), ActorRefs.Nobody);
matcher.Tell(Ask.New("3", "MSFT", units: 50, price: 100.00m), ActorRefs.Nobody);
// Get the current price
matcher.Ask <GetPriceResult>(Ask.New("3", "MSFT", units: 50, price: 100.00m))
.ContinueWith(r => Console.WriteLine($"MSFT bid:{r.Result.Bid:c2} ask:{r.Result.Ask:c2}"));
// Listen for trade settlement and price changes
var logger = system.ActorOf(dsl =>
{
dsl.Receive <TradeSettled>((evt, ctx) =>
Console.WriteLine($"! Settled bid {evt.BidOrderId} with ask {evt.AskOrderId}: {evt.Units} @ {evt.Price:c2}"));
dsl.Receive <PriceChanged>((evt, ctx) =>
Console.WriteLine($"! {evt.StockId} now at bid: {evt.Bid:c2} ask: {evt.Ask:c2}"));
dsl.Receive <OrderPlaced>((evt, ctx) =>
Console.WriteLine($"! Order placed: {evt.Order}"));
});
// Subscribe to trade settlement, price change, and order placed events
system.EventStream.Subscribe(logger, typeof(TradeSettled));
system.EventStream.Subscribe(logger, typeof(PriceChanged));
system.EventStream.Subscribe(logger, typeof(OrderPlaced));
// Get the full list of successful trades
var trades = matcher.Ask <GetTradesResult>(new GetTrades())
.ContinueWith(r => Console.WriteLine(string.Join(Environment.NewLine, r.Result.Orders)));
Console.WriteLine("Press enter to stop trading engine");
Console.ReadLine();
}
private static Ask NewAsk(int units, decimal price) => Ask.New(NewId(), StockId, units: units, price: price);
