diff --git a/tests/engine/aria-cache.test.ts b/tests/engine/aria-cache.test.ts
index 34533d8..1e8b2c5 100644
--- a/tests/engine/aria-cache.test.ts
+++ b/tests/engine/aria-cache.test.ts
@@ -48,6 +48,7 @@ describe('AriaEngine SSTable 缓存内存上限', () => {
       flush(): Promise<void>;
       getCacheSize(): number;
       getCacheLimit(): number;
+      getOversizedCount(): number;
       getStats(): { sstableCount: number };
     };
     // v0.6.1-perf: insert 不再隐式排空后台链（逐行 prefetchKeys 已移除），