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

import 'package:flutter_test/flutter_test.dart';
import 'package:social_app/data/cache/cache_policy.dart';
import 'package:social_app/data/cache/cached_repository.dart';
import 'package:social_app/data/cache/hybrid_cache_store.dart';
import 'package:social_app/data/cache/memory_cache_store.dart';
import 'package:social_app/data/cache/persistent_cache_store.dart';

class _IntCachedRepository extends CachedRepository<int> {
  int loadCount = 0;

  _IntCachedRepository({required super.store})
    : super(
        policy: const CachePolicy(
          softTtl: Duration(hours: 1),
          hardTtl: Duration(hours: 2),
          minRefreshInterval: Duration(minutes: 10),
        ),
      );

  Future<int> fetch({bool forceRefresh = false}) {
    return getOrLoad(
      key: 'test:number',
      forceRefresh: forceRefresh,
      loadFromRemote: () async {
        loadCount += 1;
        return loadCount;
      },
    );
  }
}

void main() {
  group('CachedRepository', () {
    test('reads from cache after first load', () async {
      final repo = _IntCachedRepository(
        store: HybridCacheStore(
          memory: MemoryCacheStore(),
          persistent: PersistentCacheStore(),
        ),
      );

      final first = await repo.fetch();
      final second = await repo.fetch();

      expect(first, 1);
      expect(second, 1);
      expect(repo.loadCount, 1);
    });

    test('force refresh bypasses cached value', () async {
      final repo = _IntCachedRepository(
        store: HybridCacheStore(
          memory: MemoryCacheStore(),
          persistent: PersistentCacheStore(),
        ),
      );

      await repo.fetch();
      final refreshed = await repo.fetch(forceRefresh: true);

      expect(refreshed, 2);
      expect(repo.loadCount, 2);
    });
  });
}