test(app): cover routing and secure socks migrations

Cover legacy Auto and ASS preference migration, authenticated SOCKS session generation and the stock-runtime Xray SOCKS schema so future runtime changes cannot silently restore the old fixed-port/no-auth behavior.

test/auto_to_tun_migration_test.dart

@@ -0,0 +1,20 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:revoltvpn/logic/connection_settings.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  test('legacy Auto connection mode migrates to TUN', () async {
+    SharedPreferences.setMockInitialValues(<String, Object>{
+      'connection_mode': 'auto',
+      'app_routing_mode': 'all',
+    });
+
+    await ConnectionSettings.initialize();
+
+    expect(ConnectionSettings.mode, ConnectionMode.tun);
+    final prefs = await SharedPreferences.getInstance();
+    expect(prefs.getString('connection_mode'), ConnectionMode.tun.name);
+  });
+}

test/no_ass_migration_test.dart

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+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:revoltvpn/logic/connection_settings.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  test('legacy ASS migrates to SOCKS5 selected-only without losing packages', () async {
+    SharedPreferences.setMockInitialValues(<String, Object>{
+      'connection_mode': 'ass',
+      'app_routing_mode': 'selected',
+      'app_routing_packages': <String>[
+        'com.android.chrome',
+        'com.discord',
+      ],
+    });
+
+    await ConnectionSettings.initialize();
+
+    expect(ConnectionSettings.mode, ConnectionMode.proxy);
+    expect(ConnectionSettings.routingMode, AppRoutingMode.selected);
+    expect(
+      ConnectionSettings.appPackages,
+      <String>['com.android.chrome', 'com.discord'],
+    );
+  });
+}

test/secure_socks_session_test.dart

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+import 'dart:convert';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:revoltvpn/logic/secure_socks_session.dart';
+
+void main() {
+  test('secure SOCKS session replaces unauthenticated proxy inbounds', () async {
+    const baseConfig = '''
+{
+  "inbounds": [
+    {
+      "tag": "legacy-socks",
+      "listen": "127.0.0.1",
+      "port": 10807,
+      "protocol": "socks",
+      "settings": {"auth": "noauth", "udp": true}
+    },
+    {
+      "tag": "legacy-http",
+      "listen": "127.0.0.1",
+      "port": 10808,
+      "protocol": "http"
+    },
+    {
+      "tag": "non-proxy-inbound",
+      "listen": "127.0.0.1",
+      "port": 12000,
+      "protocol": "dokodemo-door"
+    }
+  ],
+  "outbounds": []
+}
+''';
+
+    final first = await SecureSocksSession.create(baseConfig);
+    final second = await SecureSocksSession.create(baseConfig);
+
+    expect(first.port, greaterThan(1024));
+    expect(first.port, lessThanOrEqualTo(65535));
+    expect(first.username, matches(RegExp(r'^[0-9a-f]{32}$')));
+    expect(first.password, matches(RegExp(r'^[0-9a-f]{64}$')));
+    expect(second.username, isNot(first.username));
+    expect(second.password, isNot(first.password));
+
+    final decoded = jsonDecode(first.configJson) as Map<String, dynamic>;
+    final inbounds = decoded['inbounds'] as List<dynamic>;
+
+    expect(
+      inbounds.where((value) => value['protocol'] == 'http'),
+      isEmpty,
+    );
+
+    final socks = inbounds
+        .cast<Map<String, dynamic>>()
+        .singleWhere((value) => value['protocol'] == 'socks');
+    expect(socks['tag'], SecureSocksSession.inboundTag);
+    expect(socks['listen'], '127.0.0.1');
+    expect(socks['port'], first.port);
+
+    final settings = socks['settings'] as Map<String, dynamic>;
+    expect(settings['auth'], 'password');
+    expect(settings['ip'], '127.0.0.1');
+    expect(settings.containsKey('accounts'), isFalse);
+
+    final users = settings['users'] as List<dynamic>;
+    expect(users, hasLength(1));
+    expect(users.single['user'], first.username);
+    expect(users.single['pass'], first.password);
+
+    expect(
+      inbounds.where((value) => value['protocol'] == 'dokodemo-door'),
+      hasLength(1),
+    );
+  });
+}

test/xray_socks_schema_test.dart

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+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('stock runtime patch validates the current SOCKS5 users schema', () {
+    final source = File(
+      'tool/patch_flutter_vless_secure_socks_v2.dart',
+    ).readAsStringSync();
+
+    expect(source, contains('settings.optJSONArray("users")'));
+    expect(source, contains('settings.optString("auth") != "password"'));
+    expect(source, contains('inbound.optString("listen") != "127.0.0.1"'));
+    expect(source, contains('account.optString("user").isEmpty()'));
+    expect(source, contains('account.optString("pass").isEmpty()'));
+    expect(source, isNot(contains('settings.optJSONArray("accounts")')));
+  });
+}