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- Herausgeber: Packt Publishing
- Kategorie: Fachliteratur
- Sprache: Englisch
This book is for web developers and designers who work with React.js and JavaScript and who are new to unit testing and automation. It's assumed that you have a basic knowledge of JavaScript and HTML.
Das E-Book können Sie in Legimi-Apps oder einer beliebigen App lesen, die das folgende Format unterstützen:
Seitenzahl: 134
Veröffentlichungsjahr: 2015
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Table of Contents
Jasmine JavaScript Testing Second Edition
Jasmine JavaScript Testing Second Edition
Copyright © 2015 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: August 2013
Second edition: April 2015
Production reference: 1210415
Published by Packt Publishing Ltd.
Livery Place
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Birmingham B3 2PB, UK.
ISBN 978-1-78528-204-1
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Credits
Author
Paulo Ragonha
Reviewers
Hany A. Elemary
Ryzhikov Maksim
Veer Shubhranshu Shrivastav
Sergey Simonchik
Commissioning Editor
Amarabha Banerjee
Acquisition Editor
Larissa Pinto
Content Development Editor
Manasi Pandire
Technical Editor
Anushree Arun Tendulkar
Copy Editor
Sarang Chari
Project Coordinator
Suzanne Coutinho
Proofreaders
Paul Hindle
Linda Morris
Indexer
Tejal Soni
Production Coordinator
Aparna Bhagat
Cover Work
Aparna Bhagat
About the Author
Paulo Ragonha is a software engineer with over 7 years of professional experience. An advocate of the open Web, he is inspired and driven to build compelling experiences on top of this ubiquitous platform.
He loves to hack, so you will often see him wandering around in conferences or attending hackathons. His most recent professional experiences ranged from DevOps (with Chef and Docker) to moving up the stack with Node.js, Ruby, and Python and all the way toward building single-page applications (mostly with Backbone.js and "ad hoc" solutions).
Passionate about automation, he sees testing as a liberating tool to enjoy the craft of writing code even more. Back in 2013, he wrote the first edition of the book Jasmine JavaScript Testing, Packt Publishing.
Paulo has an amazing wife, who he loves very much. He lives in beautiful Florianópolis, a coastal city in the south of Brazil. He is a casual speaker, a biker, a runner, and a hobbyist photographer.
About the Reviewers
Hany A. Elemary is a software engineer / technical team lead at OCLC in Columbus, Ohio, currently working on the next generation of mobile/web apps (http://www.worldcat.org and WorldCat for local institutions). He has been blessed with diverse experience while working for multiple companies (from small software shops to large corporations) and seeing different releasable software strategies. He has a clear focus and passion for mobile/web UI design, interactions, usability, and accessibility. When there is time, he enjoys playing his acoustic guitar, AnnaMaria.
Special thanks to my close friends and family for always pushing me to be better in every aspect of life.
Ryzhikov Maksim is a 27-year-old software developer from Saint Petersburg, Russia.
He develops complex web applications. He graduated from the physics faculty at Saint Petersburg State University. His journey into the world of software development started not so long ago—5 years ago.
His brother invited him to join the team that developed programs for American hospitals, as an HTML developer.
Ryzhikov started with developing a simple, static site for hospitals and then studied JavaScript, Ruby, and SQL and worked as a full-stack developer. In 5 years of work in the area of IT, he has worked in various projects and teams. He developed medical systems, dating sites, web mail (Yandex.Mail), and now he helps develop tools for developers at JetBrains.
Veer Shubhranshu Shrivastav is an Indian software developer working with Tata Consultancy Services since 2013 and is a former research intern at IIIT-Delhi. He has worked on different technologies, such as PHP, Moodle, jQuery, AngularJS, RequireJS, Android, Jasmine, Ionic, and so on, and also takes an interest in cryptography, network security, and database technologies. He has worked with various Indian IT start-ups, helping them as a software architect.
With his interest in the open source community, he developed a Pro*C library named CODBC, which is available at http://codbc.com. The library enables an object-oriented approach to connect C++ and Oracle Database.
Sergey Simonchik is a software developer living and working in Saint Petersburg, Russia. He is lucky because he has a wonderful wife and a kind cat. Sergey develops the WebStorm IDE at JetBrains. He is working on improving JavaScript unit testing support and other IDE features.
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Preface
This book is about being a better JavaScript developer. So, throughout the chapters, you will not only learn about writing tests in the Jasmine 'idiom', but also about the best practices in writing software in the JavaScript language. It is about acknowledging JavaScript as a real platform for application development and leveraging all its potential. It is also about tooling and automation and how to make your life easier and more productive.
Most importantly, this book is about craftsmanship of not only working software, but also well-crafted software.
Jasmine JavaScript Testing, Second Edition is a practical guide to writing and automating JavaScript testing for web applications. It uses technologies such as Jasmine, Node.js, and webpack.
Over the course of the chapters, the concept of test-driven development is explained through the development of a simple stock market Investment Tracker application. It starts with the basics of testing through the development of the base domain classes (such as stock and investment), passes through the concepts of maintainable browser code, and concludes with a full refactoring to a React.js application build on ECMA Script 6 modules and automated build.
What this book covers
Chapter 1, Getting Started with Jasmine, covers the motivations behind testing a JavaScript application. It presents the concept of BDD and how it helps you to write better tests. It also demonstrates how easy it is to download Jasmine and start coding your first tests.
Chapter 2, Your First Spec, helps you learn the thought process behind thinking in terms of test-driven development. You will code your very first JavaScript functionality driven by tests. You will also learn the basic functions of Jasmine and how to structure your tests. Also demonstrated, is how Jasmine matchers work and how you can create one of your own to improve your tests' code readability.
Chapter 3, Testing Frontend Code, covers some patterns in writing maintainable browser code. You will learn about thinking in terms of components and how to use the module pattern to better organize your source files. You will also be presented with the concept of HTML fixtures and how you can use it to test your JavaScript code without requiring your servers to render an HTML. You will also learn about a Jasmine plugin called jasmine-jquery and how it can help you write better tests with jQuery.
Chapter 4, Asynchronous Testing – AJAX, talks about the challenges in testing AJAX requests and how you can use Jasmine to test any asynchronous code. You will learn about Node.js and how to create a very simple HTTP server to use as a fixture to your tests.
Chapter 5, Jasmine Spies, presents the concept of test doubles and how to use spies to do behavior checking.
Chapter 6, Light Speed Unit Testing, helps you to learn about the issues with AJAX testing and how you can make your tests run faster using stubs or fakes.
Chapter 7, Testing React Applications, introduces you to React, a library to build user interfaces, and covers how you can use it to improve the concepts presented in Chapter 3, Testing Frontend Code, to create richer and more maintainable applications, of course, driven by tests.
Chapter 8, Build Automation, presents you with the power of automation. It introduces you to webpack, a bundling tool for frontend assets. You will start to think in terms of modules and their dependencies, and you will learn how to code your tests as modules. You will also learn about packing and minifying the code to production and how to automate this process. Finally, you are going to learn about running your tests from a command line and how this can be used in a continuous integration environment with Travis.ci.
What you need for this book
Besides a browser and a text editor, the only requirement to run some of the examples, is Node.js 0.10.x.
Who this book is for
This book is a must-have material for web developers new to the concept of unit testing. It's assumed that you have a basic knowledge of JavaScript and HTML.
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Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "We can include other contexts through the use of the include directive."
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Note
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Tip
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