모바일 로그인창 테스트 강화

userfront/test/toml_asset_loader_test.dart

@@ -0,0 +1,50 @@
+import 'dart:ui';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:userfront/core/i18n/toml_asset_loader.dart';
+import 'package:userfront/i18n_data.dart';
+
+void main() {
+  test('TomlAssetLoader keeps flat keys for fast startup lookup', () async {
+    const loader = TomlAssetLoader();
+
+    final translations = await loader.load(
+      'assets/translations',
+      const Locale('en'),
+    );
+
+    expect(translations['domain.company.baron'], 'Baron');
+    expect(translations['domain'], isNull);
+  });
+
+  test('English signup policy copy stays small enough for first render', () {
+    const sensitiveKeys = [
+      'msg.userfront.signup.privacy_full',
+      'msg.userfront.signup.tos_full',
+    ];
+
+    for (final key in sensitiveKeys) {
+      final value = enStrings[key];
+      expect(value, isNotNull, reason: key);
+      expect(value!.length, lessThan(1024), reason: key);
+      expect(value.contains(r'\\\\'), isFalse, reason: key);
+    }
+  });
+
+  test(
+    'TomlAssetLoader excludes non-userfront dictionaries at startup',
+    () async {
+      const loader = TomlAssetLoader();
+
+      final translations = await loader.load(
+        'assets/translations',
+        const Locale('en'),
+      );
+
+      expect(translations['ui.admin.nav.api_keys'], isNull);
+      expect(translations['ui.dev.console_title'], isNull);
+      expect(translations['ui.userfront.login.action.submit'], 'Sign in');
+      expect(translations['ui.common.theme_light'], 'Light');
+    },
+  );
+}