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userfront/test/login_link_route_policy_test.dart

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+import 'package:flutter_test/flutter_test.dart';
+import 'package:userfront/core/i18n/locale_registry.dart';
+import 'package:userfront/features/auth/domain/login_link_route_policy.dart';
+
+void main() {
+  group('login_link_route_policy', () {
+    setUp(() {
+      LocaleRegistry.setSupportedLocaleCodesForTest(['ko', 'en']);
+    });
+
+    tearDown(() {
+      LocaleRegistry.resetForTest();
+    });
+
+    test('extracts short code from plain short-code route', () {
+      final shortCode = extractLoginShortCode(Uri.parse('/l/AB123456'));
+      expect(shortCode, 'AB123456');
+    });
+
+    test('extracts short code from localized short-code route', () {
+      final shortCode = extractLoginShortCode(Uri.parse('/ko/l/AB123456'));
+      expect(shortCode, 'AB123456');
+    });
+
+    test('treats localized short-code route as public path', () {
+      final isPublic = isPublicAuthPath(
+        '/l/AB123456',
+        Uri.parse('/ko/l/AB123456'),
+      );
+      expect(isPublic, isTrue);
+    });
+  });
+}