chore: update linter.

pkg/server/server_entrypoint_tcp_test.go

@@ -28,6 +28,7 @@ func TestShutdownHijacked(t *testing.T) {
 		err = resp.Write(conn)
 		require.NoError(t, err)
 	}))
+
 	testShutdown(t, router)
 }
 
@@ -37,6 +38,7 @@ func TestShutdownHTTP(t *testing.T) {
 		rw.WriteHeader(http.StatusOK)
 		time.Sleep(time.Second)
 	}))
+
 	testShutdown(t, router)
 }
 
@@ -61,6 +63,8 @@ func TestShutdownTCP(t *testing.T) {
 }
 
 func testShutdown(t *testing.T, router *tcp.Router) {
+	t.Helper()
+
 	epConfig := &static.EntryPointsTransport{}
 	epConfig.SetDefaults()
 

pkg/server/server_entrypoint_udp_test.go

@@ -103,6 +103,8 @@ func TestShutdownUDPConn(t *testing.T) {
 // It fatals if the read blocks longer than timeout, which is useful to detect
 // regressions that would make a test wait forever.
 func requireEcho(t *testing.T, data string, conn io.ReadWriter, timeout time.Duration) {
+	t.Helper()
+
 	_, err := conn.Write([]byte(data))
 	require.NoError(t, err)
 

pkg/server/service/proxy_websocket_test.go

@@ -696,12 +696,16 @@ func (w *websocketRequest) open() (*websocket.Conn, net.Conn, error) {
 }
 
 func parseURI(t *testing.T, uri string) *url.URL {
+	t.Helper()
+
 	out, err := url.ParseRequestURI(uri)
 	require.NoError(t, err)
 	return out
 }
 
 func createProxyWithForwarder(t *testing.T, proxy http.Handler, url string) *httptest.Server {
+	t.Helper()
+
 	return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
 		path := req.URL.Path // keep the original path
 		// Set new backend URL