fix: time in force day

Author: Insmael

src/main/java/com/cryptomarket/params/TimeInForce.java

@@ -1,5 +1,7 @@
 package com.cryptomarket.params;
 
+import com.squareup.moshi.Json;
+
 /** Time in force */
 public enum TimeInForce {
   /** good till canceled */
@@ -9,12 +11,8 @@ public enum TimeInForce {
   /** fill or kill */
   FOK,
   /** day */
-  DAY {
-    @Override
-    public String toString() {
-      return "Day";
-    }
-  },
+  @Json(name="Day")
+  DAY,
   /** good till date */
   GTD,
 }

src/test/java/com/cryptomarket/sdk/TestRestClientSpotTrading.java

@@ -65,6 +65,7 @@ public void testOrderFlow() throws CryptomarketSDKException {
         .symbol("EOSETH")
         .side(Side.SELL)
         .quantity("0.01")
+        .timeInForce(TimeInForce.DAY)
         .orderType(OrderType.LIMIT)
         .price("1000"));
     Checker.checkOrder.accept(order);
@@ -105,4 +106,4 @@ public void testCreateOrderList() throws CryptomarketSDKException {
         null);
     orders.forEach(Checker.checkOrder);
   }
-}
+}