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.
124
5 章 テストを安定させる
最後の変更は、
run_tests.rb
ファイルの追加です。すべてのテストで使われている、お決まり
の
require
文をすべてここに移しました。もはやテストファイルを個別に実行する必要はありませ
ん。代わりに次のコマンドを実行することで、テストスイート全体を実行することができます。
ruby run_tests.rb
このコマンドを実行すると、
SeleniumWrapper
クラスを利用して、すべてのテストが実行される
はずです。実行結果は次のようになります。
5-30
私たちのテストスイートはかなり収まりが良くなりました。
JavaScript
とブラウザに特有な不安
定さの原因から、テストスイートを守りました。不安定さにはもう一種類あります、それは不要な
サードパーティとの依存関係によるものです。これには
Black Hole Proxy
パターンが役立ちます。
5.5
Black Hole Proxy
パターン
Black Hole Proxy
パターンは、サードパーティにまつわる不確実性をできるだけ取り除くこと
で、テストの不安定さを軽減しようとします。最近のウェブサイトはどのページにも、サードパー
ティコンテンツを多数ロードしています。ソーシャルネットワーキングのためのボタン、
CDN
か
らやってきた画像、トラッキングピクセルなど、さまざまです。これらはみな、私たちのテストを
どこかで不安定にする可能性があります。
Black Hole Proxy
はサードパーティのウェブサイトに ...
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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.