userfront&backend test coverage 추가

userfront/test/auth_token_store_test.dart

@@ -0,0 +1,35 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:userfront/core/services/auth_token_store.dart';
+
+void main() {
+  group('AuthTokenStore facade', () {
+    setUp(AuthTokenStore.clear);
+    tearDown(AuthTokenStore.clear);
+
+    test('token, provider, cookie mode, pending provider 상태를 위임한다', () {
+      expect(AuthTokenStore.hasToken(), isFalse);
+
+      AuthTokenStore.setToken('jwt-token', provider: 'ory');
+
+      expect(AuthTokenStore.hasToken(), isTrue);
+      expect(AuthTokenStore.getToken(), 'jwt-token');
+      expect(AuthTokenStore.getProvider(), 'ory');
+      expect(AuthTokenStore.usesCookie(), isFalse);
+
+      AuthTokenStore.setPendingProvider('pending-ory');
+      expect(AuthTokenStore.getPendingProvider(), 'pending-ory');
+      AuthTokenStore.clearPendingProvider();
+      expect(AuthTokenStore.getPendingProvider(), isNull);
+
+      AuthTokenStore.setCookieMode(provider: 'cookie-ory');
+      expect(AuthTokenStore.hasToken(), isFalse);
+      expect(AuthTokenStore.getToken(), isNull);
+      expect(AuthTokenStore.getProvider(), 'cookie-ory');
+      expect(AuthTokenStore.usesCookie(), isTrue);
+
+      AuthTokenStore.clear();
+      expect(AuthTokenStore.getProvider(), isNull);
+      expect(AuthTokenStore.usesCookie(), isFalse);
+    });
+  });
+}