July 2024
Beginner to intermediate
272 pages
5h 40m
Japanese
Content preview from アーキテクトの教科書 価値を生むソフトウェアのアーキテクチャ構築
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202
生するからです。
これらを考慮すると、ユニットテストの量をなるべく増やすことが理
にかなっていることがわかるでしょう。ただし、ユニットテストだけで
は、コンポーネントを統合したときに全体として正しく動作することを
保証することはできないので、インテグレーションテストやE2Eテス
トを組み合わせる必要があります。
⹅
図5.2.1
テストピラミッド
E2E
テスト
インテグレーション
テスト
ユニットテスト
なお、テストピラミッドはあくまでもモデルであり、面積の比率が実
際のテストの量の比率を正確に表しているわけではありません。あるい
は、テストの黄金比率のようなものも存在しません。
テストピラミッドを基本的なガイダンスとし、それぞれの自動テスト
を使い分ける方針や基準を定めることが、テスト戦略の策定だと考えて
ください。そのためには、それぞれのテストの特徴を把握しておく必要
があります。順に見ていきましょう。
ユニットテスト
単体テストという用語は広い意味で使われるため、自動テストの文脈
ではユニットテストという用語を使うことが多く、本書でもそのように
します。
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