fix test

src/ray/common/ray_syncer/ray_syncer-inl.h

@@ -151,6 +151,8 @@ class RaySyncerBidiReactor {
  virtual void DoDisconnect() = 0;
  std::string remote_node_id_;
  bool disconnected_ = false;
+
+ FRIEND_TEST(SyncerReactorTest, TestReactorFailure);
 };
 
 /// This class implements the communication between two nodes except the initialization