初めての自動テスト
https://gyazo.com/25254c90447699a904315db660fd2d61
https://www.oreilly.co.jp/books/9784873118161/
https://gyazo.com/725cb7cd54a288f61ca7f661dac7fbdb
https://gyazo.com/39d4f980dabdcc4b9ce1f80022b0df08
https://gyazo.com/08072bfed1b14e429bd6c908ba943e04
Ruby on Rails
JavaScript
O'Reilly
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