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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51
2.6 まとめ
2.4
Chain Linked
パターン
Chain Linked
パターンは
Spaghetti
パターンを改善したものです。お皿に盛られたスパゲティ
と違って、このパターンの特徴はいっぱいに伸びた長いチェーンにあります。チェーンの輪は個々
のテストを表しており、それぞれが独立しています。それぞれのテストは自己完結していて、隣に
あるテストと共有しているところはあまりないのですが、テストは依然として固定の実行順序に依
存しています。このパターンにあるテストは、たいていの場合、適切な環境のセットアップをそ
れ以前のテストに依存しています。
Chain Linked
パターンは長期的な保守性の点で、
Spaghetti
パ
ターンから大きく改善されています。ところが、毎回テストスイート全体をすべて実行する必要が
あるため、効率が悪く、使いやすくはありません。結局のところ、
Chain Linked
パターンはテス
トスイートを書くための最善の方法ではないということです。ただし、全体としては
Spaghetti
パ
ターンよりも改善されていると言えます。個々のテストを事実上、自己完結した単位に分離してい
るためです。
2.5
Big Ball of Mud
パターン
Big Ball of Mud
（大きな泥だんご）はもともと、
Brian Foote
と
Joseph Yoder
による同名の論
文で有名になりました。
Spaghetti
パターンがテストスイートを個々の束に分離できるのと違っ
て、
Big Ball of Mud ...
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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.