feat: i18n 개선 및 userfront 로그인/로케일 보완

userfront/test/widget_test.dart

@@ -5,15 +5,36 @@
 // gestures. You can also use WidgetTester to find child widgets in the widget
 // tree, read text, and verify that the values of widget properties are correct.
 
+import 'dart:ui';
+
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'package:userfront/main.dart' show BaronSSOApp;
 
+class _TestAssetLoader extends AssetLoader {
+  const _TestAssetLoader();
+
+  @override
+  Future<Map<String, dynamic>> load(String path, Locale locale) async {
+    return {};
+  }
+}
+
 void main() {
   testWidgets('BaronSSOApp builds', (WidgetTester tester) async {
     // runApp에서 ProviderScope로 감싸서 쓰고 있으니 테스트도 동일하게 감쌈
-    await tester.pumpWidget(const ProviderScope(child: BaronSSOApp()));
+    await tester.pumpWidget(
+      EasyLocalization(
+        supportedLocales: const [Locale('en'), Locale('ko')],
+        fallbackLocale: const Locale('en'),
+        startLocale: const Locale('en'),
+        path: 'assets/translations',
+        assetLoader: const _TestAssetLoader(),
+        child: const ProviderScope(child: BaronSSOApp()),
+      ),
+    );
     await tester.pump(); // 한 프레임 더
   });
 }