粗版本

exchanges/src/binance_swap_ws.rs

@@ -191,7 +191,7 @@ impl BinanceSwapWs {
         }
         let str = json!({
             "method": "REQUEST",
-            "params":params
+            "params":params,
             "id": 12 // request ID.
         });
         str.to_string()

exchanges/tests/binance_swap_test.rs

@@ -148,8 +148,8 @@ async fn rest_setting_dual_leverage_test() {
 
     let mut rest = get_rest();
     let rep_data = rest.setting_dual_leverage(json!({
-            "symbol":symbol,
-            "leverage":leverage
+            "symbol":"symbol",
+            "leverage":"leverage"
          })).await;
     trace!(?rep_data)
 }