feat: add unified cache policy primitives

2026-03-20 15:21:52 +08:00
parent cbbed29a75
commit 035ca46bd0
4 changed files with 91 additions and 0 deletions
@@ -0,0 +1,19 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:social_app/core/cache/cache_policy.dart';
+
+void main() {
+  test('soft expired should allow stale read with background refresh', () {
+    final now = DateTime(2026, 3, 20, 12);
+    final policy = CachePolicy(
+      softTtl: const Duration(minutes: 2),
+      hardTtl: const Duration(minutes: 30),
+      minRefreshInterval: const Duration(minutes: 1),
+    );
+
+    final fetchedAt = now.subtract(const Duration(minutes: 3));
+    final decision = policy.evaluate(now: now, fetchedAt: fetchedAt);
+    expect(decision.canUseCached, true);
+    expect(decision.shouldRefreshInBackground, true);
+    expect(decision.mustBlockForNetwork, false);
+  });
+}