# コマンドで実行するとファイル更新を検知して自動でテストを再実行
$ yarn test --watch
https://github.com/vuetifyjs/vuetify/issues/243 https://qiita.com/harukikaneko/items/f5e719fffb3568b56554 https://github.com/facebook/jest/issues/6933 https://tech.actindi.net/2019/07/12/083702 https://su-kun1899.hatenablog.com/entry/2018/01/25/110000 http://iobio.io/user_guides/2019/05/20/vue-js-unit-testing-with-jest/