1 files changed, 8 insertions, 1 deletions
diff --git a/src/test/ObjectMap/KeyValueDBMemory.h b/src/test/ObjectMap/KeyValueDBMemory.h
index de84ede9049..8f6381dd52b 100644
--- a/src/test/ObjectMap/KeyValueDBMemory.h
+++ b/src/test/ObjectMap/KeyValueDBMemory.h
@@ -69,7 +69,14 @@ public:
 
     explicit TransactionImpl_(KeyValueDBMemory *db) : db(db) {}
 
-
+    // dummy implementation
+    size_t get_count() const override {
+      return 0;
+    }
+    // dummy implementation
+    size_t get_size_bytes() const override {
+      return 0;
+    }
     struct SetOp : public Context {
       KeyValueDBMemory *db;
       std::pair<std::string,std::string> key;