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
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.
125
5.5 Black Hole Proxy パターン
上にあることが多いため、サードパーティコンテンツをロードする待ちがなくなると、ウェ
ブページのロードは非常に高速になります。
•
最近のウェブアプリケーションには、アプリケーションのコア機能
にとって重要でないサードパーティとの依存関係がたくさんあります。これにはトラッキ
ングピクセルや、
Facebook
や
Twitter
などのソーシャルメディアボタンなどが含まれま
す。これらサードパーティとの依存関係は、ページのロード時間を通常より長くするため、
テストが失敗する要因になることがあります。こうした重要でないサードパーティとの依
存関係をブロックすることで、
Selenium
テストは予測できない依存関係のせいで壊れる
ことなく、アプリケーションの機能を検証することができます。
•
テストはこれまで以上に環境をコントロールすることができます。
サードパーティコンテンツをブロックすることで、テスト失敗の要因となる外部との依存
関係が減らせます。
5.5.2
Black Hole Proxy
パターンの欠
Black Hole Proxy
パターンには主な欠点が
2
つあります。
•
ページからサードパーティコンテンツを多数削除すると、ページ自体
は機能しますが、新しくできた隙間を埋めようと、ボタンや画像の位置がずれてしまう恐
れがあります。
•
ーーソーシャルネットワークのアカウントを ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.