diff --git a/src/db/locator.ts b/src/db/locator.ts
index d46f085..492c73d 100644
--- a/src/db/locator.ts
+++ b/src/db/locator.ts
@@ -36,6 +36,8 @@ export function getDb(): Database {
     if (!testScope) testScope = new AsyncLocalStorage<Database>();
     const scoped = testScope.getStore();
     if (scoped) return scoped;
+    // En tests, no hacer fallback al currentDb global para evitar fugas entre suites
+    throw new DbNotConfiguredError('Database has not been configured. Call setDb(db) before using getDb().');
   }
   if (currentDb) return currentDb;
   throw new DbNotConfiguredError('Database has not been configured. Call setDb(db) before using getDb().');