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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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.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.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.
49
2.3 失敗の理由
ません。こうしたのはわざとです。テキストフィールドに入れるデータは重要であり、管理がきわ
めて難しくなることを示すためです。
テストデータを適切に扱う方法については、「4 章 データ駆動テスト」で学びます。
2.3
失敗の理
この章で、私たちは
2
つのテストを作りました。これらのテストがいかにもろいか調べましょ
う。たとえテストを書く時点でテスト設計に筋が通っていても、ほんのちょっとしたことで失敗し
てしまうのです。実際の状況を考えてみましょう。
販売チームは商品名に含まれる感嘆符の数を変更する必要があると判断しました。こうした
ちょっとした微調整はいつも起こることです。私たちは実際のウェブサイトを変更せずに、異なる
感嘆符の数を期待するようアサーションを変更しました。これによって、テストと現実との間に差
異が生まれ、テストは失敗します。
http://awful-valentine.com/code/chapter-2 から完全なテストコードをダウンロードできます。
test_add_new_review
のアサーションを次のように変更しましょう。
2-22
テストを実行すると、次のような出力が得られます。
2-23
50
2 章 Spaghetti パターン
それではテストのポストモーテムをしましょう。大きな問題を次に挙げます。 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.