public void SubscribeThrows()
{
var api = new Mock <IBinanceApi>().Object;
var client = new Mock <IDepthWebSocketClient>().Object;
var cache = new OrderBookCache(api, client);
Assert.Throws <ArgumentNullException>("symbol", () => cache.Subscribe(null));
}
public Task SubscribeOrderBook(string symbol, int limit, Action <OrderBookEventArgs> callback, Action <Exception> exception, CancellationToken cancellationToken)
{
var tcs = new TaskCompletionSource <object>();
try
{
var orderBookCache = new OrderBookCache(binanceApi, new DepthWebSocketClient());
orderBookCache.Subscribe(symbol, limit, e =>
{
if (cancellationToken.IsCancellationRequested)
{
orderBookCache.Unsubscribe();
return;
}
try
{
var orderBook = NewOrderBook(e.OrderBook);
callback.Invoke(new OrderBookEventArgs {
OrderBook = orderBook
});
}
catch (Exception ex)
{
orderBookCache.Unsubscribe();
exception.Invoke(ex);
return;
}
});
tcs.SetResult(null);
}
catch (Exception ex)
{
tcs.SetException(ex);
}
return(tcs.Task);
}
public void LinkToClient()
{
var api = new Mock <IBinanceApi>().Object;
var client1 = new Mock <IDepthClient>().Object;
var client2 = new DepthClient();
var symbol1 = Symbol.BTC_USDT;
var symbol2 = Symbol.LTC_BTC;
client2.Subscribe(symbol1);
var clientSubscribeStreams = client2.SubscribedStreams.ToArray();
Assert.Equal(DepthClient.GetStreamName(symbol1), clientSubscribeStreams.Single());
var cache = new OrderBookCache(api, client1)
{
Client = client2 // link client.
};
// Client subscribed streams are unchanged after link to unsubscribed cache.
Assert.Equal(clientSubscribeStreams, client2.SubscribedStreams);
cache.Client = client1; // unlink client.
// Subscribe cache to symbol.
cache.Subscribe(symbol2);
// Cache is subscribed to symbol.
Assert.Equal(DepthClient.GetStreamName(symbol2), cache.SubscribedStreams.Single());
cache.Client = client2; // link to client.
// Client has second subscribed stream from cache.
Assert.True(client2.SubscribedStreams.Count() == 2);
Assert.Contains(DepthClient.GetStreamName(symbol2), client2.SubscribedStreams);
}
