FPI 랭킹 내 행성·내 국가 판정 · 콜드 스타트 약관 깜빡임 · 로그아웃 상한

app/test/onboarding_test.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:fancake/app.dart';
 import 'package:fancake/core/data/repositories.dart';
 import 'package:fancake/core/firebase/firebase_boot.dart';
@@ -5,6 +7,7 @@ import 'package:fancake/features/auth/auth.dart';
 import 'package:fancake/features/auth/auth_repository.dart';
 import 'package:fancake/features/auth/login_screen.dart';
 import 'package:fancake/features/auth/onboarding_data.dart';
+import 'package:fancake/features/auth/onboarding_screens.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -20,6 +23,7 @@ void main() {
     WidgetTester tester, {
     required bool needs,
     bool intro = false,
+    Duration checkDelay = Duration.zero,
   }) async {
     tester.view.physicalSize = const Size(1080, 2400);
     tester.view.devicePixelRatio = 2;
@@ -28,7 +32,7 @@ void main() {
     final auth = AuthRepository(
       providers: [_Provider()],
       releaseMode: true,
-      needsOnboarding: (_) async => needs,
+      needsOnboarding: (_) => Future.delayed(checkDelay, () => needs),
       introPending: intro,
     );
     addTearDown(auth.dispose);
@@ -53,6 +57,22 @@ void main() {
     expect(find.byType(NavigationBar), findsOneWidget);
   });
 
+  testWidgets('동의한 계정은 셸로 가는 동안 약관 화면이 한 프레임도 그려지지 않는다 — 10/6 콜드 스타트 깜빡임', (tester) async {
+    // 서버 판정이 몇 프레임 걸리는 실기기처럼 늦춘다.
+    final (auth, _) = await boot(
+      tester,
+      needs: false,
+      checkDelay: const Duration(milliseconds: 200),
+    );
+    unawaited(auth.signIn(SocialProvider.google));
+    for (var i = 0; i < 60; i++) {
+      await tester.pump(const Duration(milliseconds: 16));
+      expect(find.byType(OnboardingFlow), findsNothing);
+    }
+    await tester.pumpAndSettle();
+    expect(find.byType(NavigationBar), findsOneWidget);
+  });
+
   testWidgets('약관 → 프로필 → 관심 아티스트 → 행성 가입 → 권한 → 가입 완료 → 셸', (tester) async {
     final (auth, repo) = await boot(tester, needs: true);
     await auth.signIn(SocialProvider.google);