/// <summary>
/// Cryptocurrency order book.
/// Process order book data from one source per one target pair.
/// </summary>
/// <param name="targetPair">Select target pair</param>
/// <param name="source">Provide order book data source</param>
/// <param name="targetType">Select target precision (default: All - accepts every type of data)</param>
public CryptoOrderBook(string targetPair, IOrderBookSource source, CryptoOrderBookType targetType = CryptoOrderBookType.All)
{
CryptoValidations.ValidateInput(targetPair, nameof(targetPair));
CryptoValidations.ValidateInput(source, nameof(source));
TargetPairOriginal = targetPair;
TargetPair = CryptoPairsHelper.Clean(targetPair);
_source = source;
TargetType = targetType;
if (targetType == CryptoOrderBookType.L1 || targetType == CryptoOrderBookType.L2)
{
// save memory, only one order at price level
_priceLevelInitialCapacity = 1;
}
else if (targetType == CryptoOrderBookType.L3)
{
// better performance, could be multiple orders at price level
_priceLevelInitialCapacity = 5;
}
Subscribe();
RestartAutoSnapshotReloading();
RestartValidityChecking();
}
public void TargetPair_ShouldFilterAsExpected(string pair, int expectedCount)
{
var source = GetSourceMock();
ICryptoOrders orders = new CryptoOrders(source, null, pair);
var updatedAll = new List <CryptoOrder>();
var updatedOurs = new List <CryptoOrder>();
orders.OrderChangedStream.Subscribe(x => updatedAll.Add(x));
orders.OurOrderChangedStream.Subscribe(x => updatedOurs.Add(x));
var currentActive = orders.GetActiveOrders();
for (int i = 0; i < 10; i++)
{
var clientId1 = orders.GenerateClientId().ToString();
var clientId2 = orders.GenerateClientId().ToString();
var side = i % 2 == 0 ? CryptoOrderSide.Bid : CryptoOrderSide.Ask;
source.StreamOrder(GetOrderMock(clientId1, "btcusd", side));
source.StreamOrder(GetOrderMock(clientId2, "neobtc", side));
}
var currentAll = orders.GetAllOrders();
var currentOurs = orders.GetOrders();
Assert.Equal(expectedCount, updatedOurs.Count);
Assert.Equal(expectedCount, currentOurs.Count);
Assert.Equal(expectedCount, updatedAll.Count);
Assert.Equal(expectedCount, currentAll.Count);
Assert.Empty(currentActive);
Assert.Equal(orders.TargetPairOriginal, pair);
Assert.Equal(orders.TargetPair, CryptoPairsHelper.Clean(pair));
}
public void StreamingSnapshot_DifferentPairs_ShouldHandleCorrectly()
{
var pair1 = "BTC/USD";
var pair2 = "ETH/BTC";
var data1 = GetOrderBookSnapshotMockData(pair1, 500);
var data2 = GetOrderBookSnapshotMockData(pair2, 200);
var data = data2.Concat(data1).ToArray();
var now = CryptoDateUtils.ConvertFromUnixSeconds(1577575307.123451);
var snapshot = new OrderBookLevelBulk(OrderBookAction.Insert, data, CryptoOrderBookType.L2)
{
ExchangeName = "test",
ServerSequence = 3,
ServerTimestamp = now
};
var source = new OrderBookSourceMock(snapshot);
ICryptoOrderBook orderBook1 = new CryptoOrderBook(pair1, source);
ICryptoOrderBook orderBook2 = new CryptoOrderBook(pair2, source);
orderBook1.OrderBookUpdatedStream.Subscribe(x =>
{
Assert.Equal("test", x.ExchangeName);
Assert.Equal(3, x.ServerSequence);
Assert.Equal(now, x.ServerTimestamp);
});
orderBook2.OrderBookUpdatedStream.Subscribe(x =>
{
Assert.Equal("test", x.ExchangeName);
Assert.Equal(3, x.ServerSequence);
Assert.Equal(now, x.ServerTimestamp);
});
source.StreamSnapshot();
Assert.Equal(500, orderBook1.BidLevels.Length);
Assert.Equal(500, orderBook1.AskLevels.Length);
Assert.Equal(200, orderBook2.BidLevels.Length);
Assert.Equal(200, orderBook2.AskLevels.Length);
Assert.Equal(499, orderBook1.BidLevels.First().Price);
Assert.Equal(1499, orderBook1.BidLevels.First().Amount);
Assert.Equal(199, orderBook2.BidLevels.First().Price);
Assert.Equal(599, orderBook2.BidLevels.First().Amount);
Assert.Equal(501, orderBook1.AskLevels.First().Price);
Assert.Equal(2501, orderBook1.AskLevels.First().Amount);
Assert.Equal(201, orderBook2.AskLevels.First().Price);
Assert.Equal(1001, orderBook2.AskLevels.First().Amount);
var levels = orderBook1.Levels;
foreach (var level in levels)
{
Assert.Equal(CryptoPairsHelper.Clean(pair1), level.Pair);
}
}
public void StreamingSnapshot_ShouldHandleCorrectly()
{
var pair = "BTC/USD";
var data = GetOrderBookSnapshotMockData(pair, 500);
var snapshot = new OrderBookLevelBulk(OrderBookAction.Insert, data, CryptoOrderBookType.L2);
var source = new OrderBookSourceMock(snapshot);
var orderBook = new CryptoOrderBook(pair, source);
source.StreamSnapshot();
Assert.Equal(500, orderBook.BidLevels.Length);
Assert.Equal(500, orderBook.AskLevels.Length);
Assert.Equal(499, orderBook.BidPrice);
Assert.Equal(1499, orderBook.BidLevels.First().Amount);
Assert.Equal(501, orderBook.AskPrice);
Assert.Equal(2501, orderBook.AskLevels.First().Amount);
var levels = orderBook.Levels;
foreach (var level in levels)
{
Assert.Equal(CryptoPairsHelper.Clean(pair), level.Pair);
}
}
public static OrderBookLevel CreateLevel(string pair, double? price, CryptoOrderSide side, string key = null)
{
return new OrderBookLevel(
key ?? CreateKey(price,side),
side,
null,
null,
null,
pair == null ? null : CryptoPairsHelper.Clean(pair)
);
}
public static OrderBookLevel CreateLevelById(string pair, double?price, double?amount, CryptoOrderSide side, int?count = 3, string key = null)
{
return(new OrderBookLevel(
key ?? CreateKey(price, side),
side,
null,
amount,
count,
pair == null ? null : CryptoPairsHelper.Clean(pair)
));
}
/// <summary>
/// Orders manager
/// </summary>
/// <param name="source">Orders source</param>
/// <param name="orderPrefix">Select prefix if you want to distinguish orders</param>
/// <param name="targetPair">Select target pair, if you want to filter monitored orders</param>
public CryptoOrders(IOrderSource source, long?orderPrefix = null, string targetPair = null)
{
CryptoValidations.ValidateInput(source, nameof(source));
_source = source;
TargetPair = CryptoPairsHelper.Clean(targetPair);
TargetPairOriginal = targetPair;
_source.SetExistingOrders(_idToOrder);
_orderPrefix = orderPrefix;
Subscribe();
}
/// <summary>
/// Level constructor
/// </summary>
public OrderBookLevel(string id, CryptoOrderSide side, double?price, double?amount, int?count, string pair)
{
Id = id;
Side = side;
Price = price;
Count = count;
Amount = amount;
Pair = pair == null ? null : CryptoPairsHelper.Clean(pair);
Price = Price;
Amount = Abs(Amount);
Count = Abs(Count);
}
/// <summary>
/// Cryptocurrency order book.
/// Process order book data from one source per one target pair.
/// </summary>
/// <param name="targetPair">Select target pair</param>
/// <param name="source">Provide level 2 source data</param>
public CryptoOrderBookL2(string targetPair, IOrderBookSource source)
{
CryptoValidations.ValidateInput(targetPair, nameof(targetPair));
CryptoValidations.ValidateInput(source, nameof(source));
TargetPairOriginal = targetPair;
TargetPair = CryptoPairsHelper.Clean(targetPair);
_source = source;
Subscribe();
RestartAutoSnapshotReloading();
RestartValidityChecking();
}
private CryptoWallet ConvertWallet(WalletResponse response)
{
var id = response.Currency;
var wallet = new CryptoWallet
{
Type = "Exchange",
Currency = CryptoPairsHelper.Clean(response.Currency),
Balance = Math.Abs(response.Balance),
BalanceAvailable = response.Available
};
_lastWallet = wallet;
return(wallet);
}
private CryptoWallet ConvertWallet(Wallet response)
{
//var currency = response.Currency ?? "XBt";
var wallet = new CryptoWallet
{
Currency = CryptoPairsHelper.Clean(response.Currency),
Balance = response.Balance,
//?? _lastWallet?.Balance ?? 0,
BalanceAvailable = response.BalanceAvailable ?? _lastWallet?.BalanceAvailable ?? 0,
Type = response.Type.ToString()
};
_lastWallet = wallet;
return(wallet);
}
private CryptoOrder ConvertOrder(OrderResponse order)
{
var id = order?.Id.ToString() ?? "00000";
var clientId = order?.ProfileId;
var existingCurrent = ExistingOrders.ContainsKey(id) ? ExistingOrders[id] : null;
var existingPartial = _partiallyFilledOrders.ContainsKey(id) ? _partiallyFilledOrders[id] : null;
var existing = existingPartial ?? existingCurrent;
var price = Math.Abs(FirstNonZero(order?.Price, existing?.Price) ?? 0);
var amount = Math.Abs(FirstNonZero(order?.Amount, existing?.AmountOrig) ?? 0);
var amountOrig = Math.Abs(order?.Size ?? 0);
var currentStatus = existing != null &&
existing.OrderStatus != CryptoOrderStatus.Undefined &&
existing.OrderStatus != CryptoOrderStatus.New &&
order?.OrderStatus == OrderStatus.Undefined
? existing.OrderStatus
: ConvertOrderStatus(order);
var newOrder = new CryptoOrder
{
Id = id,
Pair = CryptoPairsHelper.Clean(order?.Pair),
Price = price,
//Amount = amount,
AmountOrig = amountOrig,
Side = ConvertSide(order.Side),
OrderStatus = ConvertOrderStatus(order),
Type = (CryptoOrderType)order.OrderType,
Created = ConvertToDatetime(order.MtsCreate),
ClientId = clientId
//Created = Convert.ToDateTime(order.MtsCreate)
};
if (currentStatus == CryptoOrderStatus.PartiallyFilled)
{
// save partially filled orders
_partiallyFilledOrders[newOrder.Id] = newOrder;
}
return(newOrder);
}
private CryptoOrder ConvertOrder(OrderResponse order)
{
var id = order.Data.Id.ToString();
var clientId = order.Data.Id;
var existingCurrent = ExistingOrders.ContainsKey(id) ? ExistingOrders[id] : null;
var existingPartial = _partiallyFilledOrders.ContainsKey(id) ? _partiallyFilledOrders[id] : null;
var existing = existingPartial ?? existingCurrent;
var price = Math.Abs(FirstNonZero(order.Data.Price, existing?.Price) ?? 0);
var amount = Math.Abs(FirstNonZero(order.Data.Amount, existing?.AmountOrig) ?? 0);
var amountOrig = Math.Abs(order.Data.Amount);
var currentStatus = existing != null &&
existing.OrderStatus != CryptoOrderStatus.Undefined &&
existing.OrderStatus != CryptoOrderStatus.New
//&&
//order.OrderStatus == OrderStatus.Undefined
? existing.OrderStatus
: ConvertOrderStatus(order);
var newOrder = new CryptoOrder
{
Id = id,
Pair = CryptoPairsHelper.Clean(order.Symbol),
Price = price,
//Amount = amount,
AmountOrig = amountOrig,
Side = ConvertSide(order.Data.Amount),
OrderStatus = ConvertOrderStatus(order),
Type = (CryptoOrderType)order.Data.OrderType,
//TODO
//Created = ConvertToDatetime(DateTimeOffset.Parse(order.Data.MicroTimeStamp, out dt))
};
if (currentStatus == CryptoOrderStatus.PartiallyFilled)
{
// save partially filled orders
_partiallyFilledOrders[newOrder.Id] = newOrder;
}
return(newOrder);
}
public async Task StreamingFromFile_ShouldHandleCorrectly()
{
var pair = "XBTUSD";
var communicator = new RawFileCommunicator();
communicator.FileNames = _rawFiles;
var client = new BitmexWebsocketClient(communicator);
var source = new BitmexOrderBookSource(client);
source.LoadSnapshotEnabled = false;
source.BufferEnabled = false;
var orderBook = new CryptoOrderBook(pair, source);
orderBook.SnapshotReloadEnabled = false;
orderBook.ValidityCheckEnabled = false;
var receivedUpdate = 0;
IOrderBookChangeInfo lastReceivedUpdate = null;
var receivedTopLevel = 0;
IOrderBookChangeInfo lastReceivedTopLevel = null;
var receivedBidAskUpdate = 0;
IOrderBookChangeInfo lastReceivedBidAskUpdate = null;
orderBook.OrderBookUpdatedStream.Subscribe(x =>
{
receivedUpdate++;
lastReceivedUpdate = x;
});
orderBook.TopLevelUpdatedStream.Subscribe(x =>
{
receivedTopLevel++;
lastReceivedTopLevel = x;
});
orderBook.BidAskUpdatedStream.Subscribe(x =>
{
receivedBidAskUpdate++;
lastReceivedBidAskUpdate = x;
});
await communicator.Start();
Assert.Equal(3284, orderBook.BidLevels.Length);
Assert.Equal(4035, orderBook.AskLevels.Length);
Assert.Equal(6249, orderBook.BidPrice);
Assert.Equal(163556, orderBook.BidLevels.First().Amount);
Assert.Equal(6249.5, orderBook.AskPrice);
Assert.Equal(270526, orderBook.AskLevels.First().Amount);
Assert.Equal(322703, receivedUpdate);
Assert.Equal(6249, lastReceivedUpdate?.Quotes?.Bid);
Assert.Equal(6249.5, lastReceivedUpdate?.Quotes?.Ask);
Assert.Equal("8799374800", lastReceivedUpdate.Sources[0].Levels[0].Id);
Assert.Equal(6252, lastReceivedUpdate.Sources[0].Levels[0].Price);
Assert.Equal(79020, receivedTopLevel);
Assert.Equal(6249, lastReceivedTopLevel?.Quotes?.Bid);
Assert.Equal(6249.5, lastReceivedTopLevel?.Quotes?.Ask);
Assert.Equal("8799375100", lastReceivedTopLevel.Sources[0].Levels[0].Id);
Assert.Equal(6249, lastReceivedTopLevel.Sources[0].Levels[0].Price);
Assert.Equal(584, receivedBidAskUpdate);
Assert.Equal(6249, lastReceivedBidAskUpdate?.Quotes?.Bid);
Assert.Equal(6249.5, lastReceivedBidAskUpdate?.Quotes?.Ask);
Assert.Equal("8799375050", lastReceivedBidAskUpdate.Sources[0].Levels[0].Id);
Assert.Equal(6249.5, lastReceivedBidAskUpdate.Sources[0].Levels[0].Price);
var levels = orderBook.Levels;
foreach (var level in levels)
{
Assert.Equal(CryptoPairsHelper.Clean(pair), level.Pair);
}
}
public void StreamingSnapshot_DifferentPairsSeparately_ShouldHandleCorrectly()
{
var pair1 = "BTC/USD";
var pair2 = "ETH/BTC";
var data1 = GetOrderBookSnapshotMockData(pair1, 500);
var data2 = GetOrderBookSnapshotMockData(pair2, 200);
var now = CryptoDateUtils.ConvertFromUnixSeconds(1577575307.123451);
var snapshot1 = new OrderBookLevelBulk(OrderBookAction.Insert, data1, CryptoOrderBookType.L2)
{
ExchangeName = "test",
ServerSequence = 4,
ServerTimestamp = now.AddMilliseconds(1)
};
var snapshot2 = new OrderBookLevelBulk(OrderBookAction.Insert, data2, CryptoOrderBookType.L2)
{
ExchangeName = "test",
ServerSequence = 5,
ServerTimestamp = now.AddMilliseconds(2)
};
var source = new OrderBookSourceMock();
var orderBook1 = new CryptoOrderBookL2(pair1, source);
var orderBook2 = new CryptoOrderBookL2(pair2, source);
orderBook1.OrderBookUpdatedStream.Subscribe(x =>
{
Assert.Equal("test", x.ExchangeName);
Assert.Equal(4, x.ServerSequence);
Assert.Equal("1577575307.124451", x.ServerTimestamp.ToUnixSecondsString());
});
orderBook2.OrderBookUpdatedStream.Subscribe(x =>
{
Assert.Equal("test", x.ExchangeName);
Assert.Equal(5, x.ServerSequence);
Assert.Equal("1577575307.125451", x.ServerTimestamp.ToUnixSecondsString());
});
source.StreamSnapshotRaw(snapshot1);
source.StreamSnapshotRaw(snapshot2);
Assert.Equal(500, orderBook1.BidLevels.Length);
Assert.Equal(500, orderBook1.AskLevels.Length);
Assert.Equal(200, orderBook2.BidLevels.Length);
Assert.Equal(200, orderBook2.AskLevels.Length);
Assert.Equal(499, orderBook1.BidLevels.First().Price);
Assert.Equal(1499, orderBook1.BidLevels.First().Amount);
Assert.Equal(199, orderBook2.BidLevels.First().Price);
Assert.Equal(599, orderBook2.BidLevels.First().Amount);
Assert.Equal(501, orderBook1.AskLevels.First().Price);
Assert.Equal(2501, orderBook1.AskLevels.First().Amount);
Assert.Equal(201, orderBook2.AskLevels.First().Price);
Assert.Equal(1001, orderBook2.AskLevels.First().Amount);
var levels = orderBook1.Levels;
foreach (var level in levels)
{
Assert.Equal(CryptoPairsHelper.Clean(pair1), level.Pair);
}
}
private string AddSymbolToChannel()
{
var x = string.Join("_", GetChannelType(), CryptoPairsHelper.Clean(Pair));
return(x);
}
public async Task StreamingDiff_TwoPairs_ShouldHandleCorrectly()
{
var pair1 = "BTC/USD";
var pair2 = "ETH/USD";
var data1 = GetOrderBookSnapshotMockData(pair1, 500);
var data2 = GetOrderBookSnapshotMockData(pair2, 200);
var data = data2.Concat(data1).ToArray();
var snapshot = new OrderBookLevelBulk(OrderBookAction.Insert, data, CryptoOrderBookType.L2);
var source = new OrderBookSourceMock(snapshot);
ICryptoOrderBook orderBook1 = new CryptoOrderBook(pair1, source)
{
DebugEnabled = true
};
ICryptoOrderBook orderBook2 = new CryptoOrderBook(pair2, source)
{
DebugEnabled = true
};
source.StreamSnapshot();
source.StreamBulk(GetInsertBulkL2(
CreateLevel(pair2, 199.4, 50, CryptoOrderSide.Bid),
CreateLevel(pair2, 198.3, 600, CryptoOrderSide.Bid),
CreateLevel(pair2, 50.33, 3350, CryptoOrderSide.Bid),
CreateLevel(pair1, 500.2, 400, CryptoOrderSide.Ask),
CreateLevel(pair1, 503.1, 3000, CryptoOrderSide.Ask),
CreateLevel(pair1, 800.123, 1234, CryptoOrderSide.Ask),
CreateLevel(null, 101.1, null, CryptoOrderSide.Bid),
CreateLevel(null, 901.1, null, CryptoOrderSide.Ask)
));
source.StreamBulk(GetInsertBulkL2(
CreateLevel(pair1, 499.4, 50, CryptoOrderSide.Bid),
CreateLevel(pair1, 498.3, 600, CryptoOrderSide.Bid),
CreateLevel(pair1, 300.33, 3350, CryptoOrderSide.Bid),
CreateLevel(pair2, 200.2, 400, CryptoOrderSide.Ask),
CreateLevel(pair2, 203.1, 3000, CryptoOrderSide.Ask),
CreateLevel(pair2, 250.123, 1234, CryptoOrderSide.Ask)
));
source.StreamBulk(GetUpdateBulkL2(
CreateLevel(pair1, 499, 33, CryptoOrderSide.Bid),
CreateLevel(pair1, 450, 33, CryptoOrderSide.Bid),
CreateLevel(pair1, 501, 32, CryptoOrderSide.Ask),
CreateLevel(pair1, 503.1, 32, CryptoOrderSide.Ask),
CreateLevel(pair1, 100, null, CryptoOrderSide.Bid),
CreateLevel(pair1, 900, null, CryptoOrderSide.Ask)
));
source.StreamBulk(GetDeleteBulkL2(
CreateLevel(pair1, 0, CryptoOrderSide.Bid),
CreateLevel(pair1, 1, CryptoOrderSide.Bid),
CreateLevel(pair2, 0, CryptoOrderSide.Bid),
CreateLevel(pair2, 1, CryptoOrderSide.Bid)
));
source.StreamBulk(GetDeleteBulkL2(
CreateLevel(pair2, 400, CryptoOrderSide.Ask),
CreateLevel(pair2, 399, CryptoOrderSide.Ask),
CreateLevel(pair1, 1000, CryptoOrderSide.Ask),
CreateLevel(pair1, 999, CryptoOrderSide.Ask)
));
await Task.Delay(500);
Assert.NotEmpty(orderBook1.BidLevels);
Assert.NotEmpty(orderBook1.AskLevels);
Assert.Equal(501, orderBook1.BidLevels.Length);
Assert.Equal(501, orderBook1.AskLevels.Length);
Assert.Equal(201, orderBook2.BidLevels.Length);
Assert.Equal(201, orderBook2.AskLevels.Length);
Assert.Equal(499.4, orderBook1.BidPrice);
Assert.Equal(500.2, orderBook1.AskPrice);
Assert.Equal(199.4, orderBook2.BidPrice);
Assert.Equal(200.2, orderBook2.AskPrice);
Assert.Equal(33, orderBook1.FindBidLevelByPrice(499)?.Amount);
Assert.Equal(33, orderBook1.FindBidLevelByPrice(450)?.Amount);
Assert.Equal(32, orderBook1.FindAskLevelByPrice(501)?.Amount);
Assert.Equal(32, orderBook1.FindAskLevelByPrice(503.1)?.Amount);
var notCompleteBid = orderBook1.FindBidLevelByPrice(100);
Assert.Equal(CryptoPairsHelper.Clean(pair1), notCompleteBid.Pair);
Assert.Equal(1100, notCompleteBid.Amount);
Assert.Equal(3, notCompleteBid.Count);
var notCompleteAsk = orderBook1.FindAskLevelByPrice(900);
Assert.Equal(CryptoPairsHelper.Clean(pair1), notCompleteAsk.Pair);
Assert.Equal(2900, notCompleteAsk.Amount);
Assert.Equal(3, notCompleteAsk.Count);
Assert.Null(orderBook1.FindBidLevelByPrice(0));
Assert.Null(orderBook1.FindBidLevelByPrice(1));
Assert.Null(orderBook1.FindAskLevelByPrice(1000));
Assert.Null(orderBook1.FindAskLevelByPrice(999));
Assert.Null(orderBook1.FindBidLevelByPrice(101.1));
Assert.Null(orderBook1.FindAskLevelByPrice(901.1));
Assert.Null(orderBook2.FindBidLevelByPrice(101.1));
Assert.Null(orderBook2.FindAskLevelByPrice(901.1));
}
public async Task StreamingDiff_ShouldHandleCorrectly()
{
var pair = "BTC/USD";
var data = GetOrderBookSnapshotMockData(pair, 500);
var snapshot = new OrderBookLevelBulk(OrderBookAction.Insert, data, CryptoOrderBookType.L2);
var source = new OrderBookSourceMock(snapshot);
ICryptoOrderBook orderBook = new CryptoOrderBook(pair, source);
source.StreamSnapshot();
source.StreamBulk(GetInsertBulkL2(
CreateLevel(pair, 499.4, 50, CryptoOrderSide.Bid),
CreateLevel(pair, 498.3, 600, CryptoOrderSide.Bid),
CreateLevel(pair, 300.33, 3350, CryptoOrderSide.Bid),
CreateLevel(pair, 500.2, 400, CryptoOrderSide.Ask),
CreateLevel(pair, 503.1, 3000, CryptoOrderSide.Ask),
CreateLevel(pair, 800.123, 1234, CryptoOrderSide.Ask),
CreateLevel(null, 101.1, null, CryptoOrderSide.Bid),
CreateLevel(null, 901.1, null, CryptoOrderSide.Ask)
));
source.StreamBulk(GetUpdateBulkL2(
CreateLevel(pair, 499, 33, CryptoOrderSide.Bid),
CreateLevel(pair, 450, 33, CryptoOrderSide.Bid),
CreateLevel(pair, 501, 32, CryptoOrderSide.Ask),
CreateLevel(pair, 503.1, 32, CryptoOrderSide.Ask),
CreateLevel(pair, 100, null, CryptoOrderSide.Bid),
CreateLevel(pair, 900, null, CryptoOrderSide.Ask)
));
source.StreamBulk(GetDeleteBulkL2(
CreateLevel(pair, 0, CryptoOrderSide.Bid),
CreateLevel(pair, 1, CryptoOrderSide.Bid),
CreateLevel(pair, 1000, CryptoOrderSide.Ask),
CreateLevel(pair, 999, CryptoOrderSide.Ask)
));
await Task.Delay(500);
Assert.NotEmpty(orderBook.BidLevels);
Assert.NotEmpty(orderBook.AskLevels);
Assert.Equal(501, orderBook.BidLevels.Length);
Assert.Equal(501, orderBook.AskLevels.Length);
Assert.Equal(499.4, orderBook.BidPrice);
Assert.Equal(500.2, orderBook.AskPrice);
Assert.Equal(33, orderBook.FindBidLevelByPrice(499)?.Amount);
Assert.Equal(33, orderBook.FindBidLevelByPrice(450)?.Amount);
Assert.Equal(32, orderBook.FindAskLevelByPrice(501)?.Amount);
Assert.Equal(32, orderBook.FindAskLevelByPrice(503.1)?.Amount);
var notCompleteBid = orderBook.FindBidLevelByPrice(100);
Assert.Equal(CryptoPairsHelper.Clean(pair), notCompleteBid.Pair);
Assert.Equal(1100, notCompleteBid.Amount);
Assert.Equal(3, notCompleteBid.Count);
var notCompleteAsk = orderBook.FindAskLevelByPrice(900);
Assert.Equal(CryptoPairsHelper.Clean(pair), notCompleteAsk.Pair);
Assert.Equal(2900, notCompleteAsk.Amount);
Assert.Equal(3, notCompleteAsk.Count);
Assert.Null(orderBook.FindBidLevelByPrice(0));
Assert.Null(orderBook.FindBidLevelByPrice(1));
Assert.Null(orderBook.FindAskLevelByPrice(1000));
Assert.Null(orderBook.FindAskLevelByPrice(999));
Assert.Null(orderBook.FindBidLevelByPrice(101.1));
Assert.Null(orderBook.FindAskLevelByPrice(901.1));
}