public void Subscribe()
{
var symbol1 = Symbol.BTC_USDT;
var symbol2 = Symbol.LTC_BTC;
Assert.Empty(_client.SubscribedStreams);
// Subscribe to symbol.
_client.Subscribe(symbol1);
Assert.Equal(DepthClient.GetStreamName(symbol1), _client.SubscribedStreams.Single());
// Re-Subscribe to same symbol doesn't fail.
_client.Subscribe(symbol1);
Assert.Equal(DepthClient.GetStreamName(symbol1), _client.SubscribedStreams.Single());
// Subscribe to a different symbol.
_client.Subscribe(symbol2);
Assert.True(_client.SubscribedStreams.Count() == 2);
Assert.Contains(DepthClient.GetStreamName(symbol1), _client.SubscribedStreams);
Assert.Contains(DepthClient.GetStreamName(symbol2), _client.SubscribedStreams);
}
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);
}