diff --git a/flutter/lib/cm_main.dart b/flutter/test/cm_test.dart
similarity index 79%
rename from flutter/lib/cm_main.dart
rename to flutter/test/cm_test.dart
index 422e7aa26..704124781 100644
--- a/flutter/lib/cm_main.dart
+++ b/flutter/test/cm_test.dart
@@ -1,18 +1,17 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_hbb/common.dart';
 import 'package:flutter_hbb/consts.dart';
+import 'package:flutter_hbb/desktop/pages/server_page.dart';
 import 'package:flutter_hbb/main.dart';
+import 'package:flutter_hbb/models/server_model.dart';
 import 'package:get/get.dart';
 import 'package:window_manager/window_manager.dart';
 
-import 'common.dart';
-import 'desktop/pages/server_page.dart';
-import 'models/server_model.dart';
-
 /// -t lib/cm_main.dart to test cm
 void main(List<String> args) async {
   WidgetsFlutterBinding.ensureInitialized();
   await windowManager.ensureInitialized();
-  await windowManager.setSize(Size(400, 600));
+  await windowManager.setSize(const Size(400, 600));
   await windowManager.setAlignment(Alignment.topRight);
   await initEnv(kAppTypeMain);
   gFFI.serverModel.clients
@@ -23,6 +22,6 @@ void main(List<String> args) async {
       .add(Client(2, false, false, "UserC", "331123123", true, false, false));
   gFFI.serverModel.clients
       .add(Client(3, false, false, "UserD", "441123123", true, false, false));
-  runApp(GetMaterialApp(
+  runApp(const GetMaterialApp(
       debugShowCheckedModeBanner: false, home: DesktopServerPage()));
 }