Normal pr: Add problems

[![Duplication](https://www.pullreview.com/assets/copy_paste-small.png)](https://www.pullreview.com/github/vanakenm/sandbox/reviews/feature/normal-pr) Avoid copy/paste.[ `NewNew#test`](https://www.pullreview.com/github/vanakenm/sandbox/reviews/feature/normal-pr)