September 2015
Beginner to intermediate
256 pages
5h 26m
Japanese
Content preview from Seleniumデザインパターン & ベストプラクティス
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75
4
データ テスト
不適切なデータを使用しての過ちは、データを一切使わないことの過ちよりもずっと小さい。
̶̶
チャールズ・バベッジ
テストデータは自動テストで肝心なところです。古い決まり文句「ゴミを入れると、ゴミしか出
てこない（
garbage in, garbage out
）」がぴったり当てはまります。テストというのは、データを
チューリングマシンに与えて、その出力を期待と比較することです。ある意味、完全なテストとい
うのは少しばかげて見えるかもしれません。異なる結果を期待しながら、同じことを何度も繰り返
し続けるのですから。
私たち自動テストの開発者の目標は、同じステップを永久に繰り返すという運命を、テストにまっ
とうさせることです。これを実現させる唯一の方法は、アプリケーションが使用するデータの一つ
ひとつを、できる限りしっかりコントロールすることです。ここで言っているテストデータは、テ
ストが購入フォームに入力するテキストだけを指しているのではありません。テストデータという
のは、テストしている環境全体の状態一式のことです。この章では、次のような概念を使って、テ
ストしている環境をコントロールしていきます。
•
フィクスチャ
•
スタブ
• YAML
• JSON
• API
エンドポイントを使う
•
ループを使ってテストケースを生成する
• Default Values
パターン
• faker
ライブラリ
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.