はじめに js,tsで単体テストを書くときにJestがテスティングフレームワークとして候補に上がります。 そしてJestならばオプション一つでカバレッジも取得でき、下記のような出力を得られます。 -----------|----------|----------|----------|----------|-------------------| File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s | -----------|----------|----------|----------|----------|-------------------| All files | 85.71 | 62.5 | 100 | 85.71 | | tester.ts | 85.71 | 62.5 | 100 | 85.7
![Jestのカバレッジはどのように見ればよいのだろうか? - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/66150aa5f137a036928e67ad26beefe5bf0512b9/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9SmVzdCVFMyU4MSVBRSVFMyU4MiVBQiVFMyU4MyU5MCVFMyU4MyVBQyVFMyU4MyU4MyVFMyU4MiVCOCVFMyU4MSVBRiVFMyU4MSVBOSVFMyU4MSVBRSVFMyU4MiU4OCVFMyU4MSU4NiVFMyU4MSVBQiVFOCVBNiU4QiVFMyU4MiU4QyVFMyU4MSVCMCVFMyU4MiU4OCVFMyU4MSU4NCVFMyU4MSVBRSVFMyU4MSVBMCVFMyU4MiU4RCVFMyU4MSU4NiVFMyU4MSU4QiVFRiVCQyU5RiUyMCZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTU2JnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnM9Y2UyYThmOGRmMTVlODE2YjMxOWEzNTRjNzExMDNiZjQ%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBzX2thcnV0YSZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTM2JnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnM9NWM2NDg3ODczOTU5NjcxMTIxYzcwNjI2N2Q5ZmVkNjk%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3Dd7526867d4b43537111e8624ad1e65c1)