#269 진행. 리다이렉트 등 파라미터 전체 전달

userfront/test/locale_registry_test.dart

@@ -0,0 +1,36 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:userfront/core/i18n/locale_registry.dart';
+
+void main() {
+  tearDown(() {
+    LocaleRegistry.resetForTest();
+  });
+
+  group('locale_registry', () {
+    test(
+      'extractSupportedLocaleCodesFromAssets excludes template and invalid',
+      () {
+        final locales = extractSupportedLocaleCodesFromAssets([
+          'assets/translations/template.toml',
+          'assets/translations/en.toml',
+          'assets/translations/ko.toml',
+          'assets/translations/pt_BR.toml',
+          'assets/translations/readme.txt',
+          'assets/translations/nested/ja.toml',
+        ]);
+
+        expect(locales, ['en', 'ko']);
+      },
+    );
+
+    test('fallback locale prefers en when available', () {
+      LocaleRegistry.setSupportedLocaleCodesForTest(['ko', 'en']);
+      expect(LocaleRegistry.fallbackLocaleCode, 'en');
+    });
+
+    test('fallback locale uses first sorted code when en is absent', () {
+      LocaleRegistry.setSupportedLocaleCodesForTest(['ko', 'ja']);
+      expect(LocaleRegistry.fallbackLocaleCode, 'ja');
+    });
+  });
+}