August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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447
A.4 Flask アプリケーションのテスト
app.logger.debug('An unauthorized user!')
return redirect('/login')
コールバックと構成変数で
Flask-login
を簡単にカスタマイズできます（
http://bit.ly/
1WRONB0
）。
このような調整のよい例は、
Miguel Grinberg
の
OAuth
の認証のデモにあります
（
http://bit.ly/1Xuo3GH
）。
基本的なログイン処理の動作を説明したので、従来の
Web
サーバに
Flask
アプリケーションを
デプロイしてみましょう。
A.4
Flask
アプリケーションのテスト
Bruce Eckel
のプログラミングに関する次の引用は、多くの人がテストの重要性についてどのよ
うに感じているかを一言で表しています。
「テストしていなければ壊れている」
もちろん、実施すべきテストの量やテストに割くべき時間については幅があるでしょう。テスト
手順の記述はとても面倒です。テストの記述には障害点を事前に知る必要があるので、どのように
してすべてを把握できるのでしょうか。実際には、プログラムが非常に複雑な場合はおそらく把握
できないでしょう。とはいえ、テストは現代のプログラミングの基本的なので、以降の例ではテス
ト手順を少しだけ記述してコードの不正な振る舞いを検出する方法を説明します。
テストは現代のプログラミングでは避けられないものです。中規模から大規模なプロジェクト
（特に共同プロジェクト）にとっては不可欠です。テストは開発中でも重要ですが、ほぼ確実に本 ...
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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.