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.
159
7.1 オブジェクトを理解する
liquid = FreshCoffee
liquid.add(Sugar)
liquid.add(Milk)
cup = CoffeMug
cup.add(liquid)
このようにちょっとした喩えを使うのは、時間の無駄ではありません。プログラミングにおけるオ
ブジェクトの概念を理解するのに役立ちます。
7.1.2
プログラムでオブジクトをする
OOP
におけるオブジェクトとは、データの抽象表現です。擬似コードの
cup
オブジェクトと同
様に、これら抽象オブジェクトもプロパティを持ち、メソッドというアクションを実行できます。
自動テストを書くときにも同じような喩えを使って、やることを表現できます。たとえば、購入
フォームにクレジットカード情報を記入するときには、
CreditCard
オブジェクトを使うことがで
きます。
card = CreditCard
card.number = 4444 3333 2222 1111
card.expiration = 01/2050
なぜ、ここでやめてしまうのでしょうか。同じ喩えを使って、テストしているページを表現する
ことができます。
7.1.3
オブジクトを使ってウブページをする
2
Spaghetti
ーでは、ページ上の要素を見つけるための各種ロケータについて説明
しました。私たちはページ上の要素を探すことで、ページにある階層を少しだけ見ました。
DIV
の内部にはいくつかの要素があり、その
DIV
はさらに大きな
DIV
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.