social-app/apps/test/app/services/session_scope_manager_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:social_app/app/services/session_scope_manager.dart';
import 'package:social_app/data/cache/cache_scope.dart';
import 'package:social_app/data/cache/cache_store.dart';

class _RecordingHybridCacheStore extends HybridCacheStore {
  _RecordingHybridCacheStore()
    : super(memory: MemoryCacheStore(), persistent: PersistentCacheStore());

  final List<String> clearedPrefixes = <String>[];

  @override
  Future<void> clearByPrefix(String prefix) async {
    clearedPrefixes.add(prefix);
  }
}

void main() {
  late _RecordingHybridCacheStore cacheStore;
  late SessionScopeManager manager;

  setUp(() {
    cacheStore = _RecordingHybridCacheStore();
    manager = SessionScopeManager(cacheStore: cacheStore);
    CacheScope.resetProvider();
  });

  tearDown(() {
    CacheScope.resetProvider();
  });

  test('activate configures stable user scope token', () async {
    await manager.activate('u-1');

    expect(CacheScope.token(), 'user:u-1');
    expect(cacheStore.clearedPrefixes, isEmpty);
  });

  test('activate clears previous user cache when switching user', () async {
    await manager.activate('u-1');
    await manager.activate('u-2');

    expect(cacheStore.clearedPrefixes, ['cache:user:u-1:']);
    expect(CacheScope.token(), 'user:u-2');
  });

  test('activate does not clear cache when user is unchanged', () async {
    await manager.activate('u-1');
    await manager.activate('u-1');

    expect(cacheStore.clearedPrefixes, isEmpty);
    expect(CacheScope.token(), 'user:u-1');
  });

  test('clearActiveUserScope clears current user cache', () async {
    await manager.activate('u-1');

    await manager.clearActiveUserScope();

    expect(cacheStore.clearedPrefixes, ['cache:user:u-1:']);
    expect(() => CacheScope.token(), throwsStateError);
  });
}