diff --git a/src/tests/websocket_test.cj b/src/tests/websocket_test.cj
index 52a1c88..a518913 100644
--- a/src/tests/websocket_test.cj
+++ b/src/tests/websocket_test.cj
@@ -64,12 +64,12 @@ class TestWsHandler <: IWebsocketHandler {
         conn.send("echo: ${msg.text.getOrThrow()}")
     }
 
-    public override func onClose(conn: WebSocketConnection, code: Int64, reason: String): Unit {
+    public override func onClose(_: WebSocketConnection, code: Int64, reason: String): Unit {
         harness.connCloseCode = code
         harness.connCloseReason = reason
     }
 
-    public override func onError(conn: WebSocketConnection, e: Exception): Unit {
+    public override func onError(_: WebSocketConnection, e: Exception): Unit {
         if (let we: WebSocketException <- e) {
             harness.connErrorCode = we.code
         }
@@ -84,19 +84,19 @@ class EchoHandler <: IWebsocketHandler {
         this.harness = harness
     }
 
-    public override func onConnect(conn: WebSocketConnection): Unit {
+    public override func onConnect(_: WebSocketConnection): Unit {
         ()
     }
 
-    public override func onMessage(conn: WebSocketConnection, msg: WebSocketMessage): Unit {
+    public override func onMessage(_: WebSocketConnection, msg: WebSocketMessage): Unit {
         harness.connMessage = msg.text.getOrThrow()
     }
 
-    public override func onClose(conn: WebSocketConnection, code: Int64, reason: String): Unit {
+    public override func onClose(_: WebSocketConnection, _: Int64, _: String): Unit {
         ()
     }
 
-    public override func onError(conn: WebSocketConnection, e: Exception): Unit {
+    public override func onError(_: WebSocketConnection, _: Exception): Unit {
         ()
     }
 }
@@ -109,15 +109,15 @@ class CloseOnConnectHandler <: IWebsocketHandler {
         conn.close(code: 4000, reason: "svr")
     }
 
-    public override func onMessage(conn: WebSocketConnection, msg: WebSocketMessage): Unit {
+    public override func onMessage(_: WebSocketConnection, _: WebSocketMessage): Unit {
         ()
     }
 
-    public override func onClose(conn: WebSocketConnection, code: Int64, reason: String): Unit {
+    public override func onClose(_: WebSocketConnection, _: Int64, _: String): Unit {
         ()
     }
 
-    public override func onError(conn: WebSocketConnection, e: Exception): Unit {
+    public override func onError(_: WebSocketConnection, _: Exception): Unit {
         ()
     }
 }
@@ -128,15 +128,15 @@ class GroupJoinHandler <: IWebsocketHandler {
         conn.joinGroup("room")
     }
 
-    public override func onMessage(conn: WebSocketConnection, msg: WebSocketMessage): Unit {
+    public override func onMessage(_: WebSocketConnection, _: WebSocketMessage): Unit {
         ()
     }
 
-    public override func onClose(conn: WebSocketConnection, code: Int64, reason: String): Unit {
+    public override func onClose(_: WebSocketConnection, _: Int64, _: String): Unit {
         ()
     }
 
-    public override func onError(conn: WebSocketConnection, e: Exception): Unit {
+    public override func onError(_: WebSocketConnection, _: Exception): Unit {
         ()
     }
 }