[kucoin] Add bid size to tickers

xchange-kucoin/example.http-client.private.env.json

@@ -0,0 +1,6 @@
+{
+  "default": {
+    "api_key": "replace_me",
+    "api_secret": "replace_me"
+  }
+}

xchange-kucoin/http-client.env.json

@@ -0,0 +1,5 @@
+{
+  "default": {
+    "api_host": "https://api.kucoin.com"
+  }
+}

xchange-kucoin/src/main/java/org/knowm/xchange/kucoin/KucoinAdapters.java

@@ -41,7 +41,11 @@
 import org.knowm.xchange.dto.marketdata.Trade;
 import org.knowm.xchange.dto.marketdata.Trades;
 import org.knowm.xchange.dto.marketdata.Trades.TradeSortType;
-import org.knowm.xchange.dto.meta.*;
+import org.knowm.xchange.dto.meta.CurrencyMetaData;
+import org.knowm.xchange.dto.meta.ExchangeMetaData;
+import org.knowm.xchange.dto.meta.FeeTier;
+import org.knowm.xchange.dto.meta.InstrumentMetaData;
+import org.knowm.xchange.dto.meta.WalletHealth;
 import org.knowm.xchange.dto.trade.LimitOrder;
 import org.knowm.xchange.dto.trade.MarketOrder;
 import org.knowm.xchange.dto.trade.StopOrder;
@@ -101,7 +105,9 @@ public static List<Ticker> adaptAllTickers(AllTickersResponse allTickersResponse
                 new Ticker.Builder()
                     .instrument(adaptCurrencyPair(ticker.getSymbol()))
                     .bid(ticker.getBuy())
+                    .bidSize(ticker.getBestBidSize())
                     .ask(ticker.getSell())
+                    .askSize(ticker.getBestAskSize())
                     .last(ticker.getLast())
                     .high(ticker.getHigh())
                     .low(ticker.getLow())

xchange-kucoin/src/main/java/org/knowm/xchange/kucoin/dto/response/AllTickersTickerResponse.java

@@ -11,7 +11,9 @@ public class AllTickersTickerResponse {
   private BigDecimal last;
   private BigDecimal low;
   private BigDecimal buy;
+  private BigDecimal bestBidSize;
   private BigDecimal sell;
+  private BigDecimal bestAskSize;
   private BigDecimal changePrice;
   private BigDecimal changeRate;
   private BigDecimal volValue;

xchange-kucoin/src/test/java/org/knowm/xchange/kucoin/KucoinMarketDataServiceIntegration.java

@@ -5,6 +5,7 @@
 import static org.junit.Assert.assertNotEquals;
 import static org.knowm.xchange.kucoin.KucoinMarketDataService.PARAM_PARTIAL_SHALLOW_ORDERBOOK;
 
+import java.io.IOException;
 import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.time.ZoneOffset;
@@ -76,6 +77,25 @@ public void testGetTicker() throws Exception {
     checkTimestamp(ticker.getTimestamp());
   }
 
+
+  @Test
+  public void valid_tickers() throws IOException {
+    List<Ticker> tickers = exchange().getMarketDataService().getTickers(null);
+    assertThat(tickers).isNotEmpty();
+
+    assertThat(tickers).allSatisfy(ticker -> {
+      assertThat(ticker.getInstrument()).isNotNull();
+      assertThat(ticker.getLast()).isPositive();
+
+      assertThat(ticker.getBidSize()).isPositive();
+      assertThat(ticker.getAskSize()).isPositive();
+
+      assertThat(ticker.getAsk()).isPositive();
+      assertThat(ticker.getBid()).isPositive();
+      assertThat(ticker.getBid()).isLessThan(ticker.getAsk());
+    });
+  }
+
   @Test
   public void testGetTickers() throws Exception {
     KucoinExchange exchange = exchange();

xchange-kucoin/src/test/resources/http/market.http

@@ -0,0 +1,8 @@
+### Get Ticker
+GET {{api_host}}/api/v1/market/orderbook/level1?symbol=BTC-USDT
+
+### Get All Tickers
+GET {{api_host}}/api/v1/market/allTickers
+
+### Get 24hr Stats
+GET {{api_host}}/api/v1/market/stats?symbol=BTC-USDT