social-app/apps/test/data/cache/hybrid_cache_store_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:social_app/data/cache/cache_scope.dart';
import 'package:social_app/data/cache/cache_store.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  group('HybridCacheStore', () {
    test('falls back to persistent and backfills memory', () async {
      SharedPreferences.setMockInitialValues(<String, Object>{});
      final prefs = await SharedPreferences.getInstance();
      final persistent = PersistentCacheStore(prefs: prefs);
      await persistent.write<String>('k', 'v');

      final hybrid = HybridCacheStore(
        memory: MemoryCacheStore(),
        persistent: persistent,
      );

      final firstRead = await hybrid.read<String>('k');
      expect(firstRead, 'v');

      await persistent.remove('k');
      final secondRead = await hybrid.read<String>('k');
      expect(secondRead, 'v');
    });

    test('cache invalidator no-ops without configured scope', () async {
      CacheScope.resetProvider();
      final invalidator = CacheInvalidator(
        store: HybridCacheStore(
          memory: MemoryCacheStore(),
          persistent: PersistentCacheStore(),
        ),
      );

      expect(
        () => invalidator.invalidate('calendar:day:2026-03-31'),
        returnsNormally,
      );
    });
  });
}