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- Herausgeber: Packt Publishing
- Kategorie: Fachliteratur
- Sprache: Englisch
No developer wants to accept the inherent difficulty of writing software as an excuse for not finding the bugs in our code before anyone else does. PHPUnit is a framework that was created to allow developers to solve that very problem. It provides a feature-rich environment with most of the tools necessary to provide adequate tests for any project.
"Instant Hands-on Testing with PHPUnit How-to" provides a thorough overview of the functionality provided by the PHPUnit framework. It shows how the plethora of features in the framework can be used to write tests for real world projects to ensure they function and will continue to function in the ways that you expect.
This book will show how you can set up the scaffolding necessary to run unit tests in your project with PHPUnit. It will walk you through the process of how to write a basic test and how to maintain your project's test suite. You will learn how to use some of the more advanced features of PHPUnit and then see how you can use mock objects to isolate the code you are testing. We will then discover how to create tests that verify your interaction with databases and even see how you can use PHPUnit to understand which code you are actually testing.
At the end of the book you will have all of the basic understanding necessary to begin adding tests to your project. This book provides a great foundation for becoming a expert at writing unit tests.
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Seitenzahl: 88
Veröffentlichungsjahr: 2013
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Table of Contents
Instant Hands-on Testing with PHPUnit How-to
Instant Hands-on Testing with PHPUnit How-to
Copyright © 2013 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: May 2013
Production Reference: 1170513
Published by Packt Publishing Ltd.
Livery Place
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Birmingham B3 2PB, UK.
ISBN 978-1-78216-958-1
www.packtpub.com
Credits
Author
Michael Lively
Reviewers
Brian Feaver
Adam Englander
Acquisition Editor
Mary Jasmine Nadar
Commissioning Editor
Yogesh Dalvi
Technical Editor
Worrell Lewis
Project Coordinator
Michelle Quadros
Proofreader
Lydia May Morris
Production Coordinator
Melwyn D'sa
Cover Work
Melwyn D'sa
Cover Image
Aditi Gajjar
About the Author
Michael Lively has worked in a variety of roles in the software development industry for 12 years, from developer to architect and now a software development director. He has worked on a variety of different projects and a variety of different technologies over that time, from small home-grown sites serving a handful of regular users to large enterprise platforms serving millions of consumers. In addition to his professional work, he has been an active member of the PHP open source community. Some of his contributions include the database extension for PHPUnit and more recently an alternative mocking framework for PHP called Phake.
I would like to thank everyone who, over the years, has given me opportunities to work in and with the technology industry. From my schooling to the present day I have had the fortunate blessing of meeting some of the most gifted and knowledgeable folks in the IT industry. Specifically, I would like to thank Sebastian Bergmann who introduced me to unit testing and provided me great opportunities to contribute back to the community. I would also like to thank Brian Feaver and Adam Englander. Both are fantastic co-workers and gave me lots of great feedback when I discussed topics for this book with them.
Last but certainly not least this journey called life would not be nearly as complete without my girls. I would like to thank my wonderful wife Sharon and my fantastic girls Trinity, Hannah, and Gracelyn. Their patience and willingness to chase my goals with me has made all the difference in the world.
About the Reviewers
Brian Feaver is the Lead Software Architect at Selling Source LLC. He's been a software developer for over 10 years, contributes to multiple open source projects, and participates in developer-user communities. He is a strong advocate of developer testing and automated testing in general.
Adam Englander is the CTO of Coupla where he leads their development and cloud platform initiatives. He is an accomplished software professional with more than 25 years of architecting and developing critical business systems. He is a testing evangelist and resource to the development community. He develops testing tools and, in addition, speaks to various groups about these tools and the testing methodologies in general.
Coupla is an online community with the singular goal of making stronger couples relationships. Coupla is a proud member of Vegas Tech and the Las Vegas Startup Community.
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Preface
The goal of almost every software developer is to create code that is free from defects and works as intended. To help ensure this goal is met we spend a significant amount of time testing the code that we have written. As software grows in size and complexity the likelihood of defects being introduced increases. Naturally, we have to increase our efforts in testing to help accommodate the increased risk.
When I first began writing software I would test my applications by manually running through a series of steps on a deployed application. I would add items to my cart, I would remove them again, I would manually check to make sure taxes and shipping costs were calculated correctly. I spent a lot of time looking at as much functionality as I could think of. Commonly, I would miss some less obvious pieces of functionality and small bugs would slowly creep into the code as the software aged and my memory of the intricate details of how it worked faded.
Fortunately, I was introduced to the concept of automated testing fairly early on in my career. Automated testing, specifically automated unit testing is a powerful tool in any programmer's arsenal. It allows us to have an easily repeatable way to check and make sure the software we write is working the way we intend. It provides future maintainers of the code with the ability to have confidence that they can change functionality and not be worried that they will regress the code back to old errors. It gives us freedom as software developers to focus more time on moving our software forward instead of living in fear that any change we make will cause the system to break.
There are many tools to help you write effective unit tests quickly. In PHP, the leading tool is PHPUnit. In this book, we are going to learn how you can use PHPUnit in your project to create a test suite that can give you an increased level of confidence in the software you are writing.
What this book covers
Installing PHPUnit (Simple) will teach you how to install PHPUnit using the PEAR package manager. You will also learn about some alternative ways to install PHPUnit.
Writing your first test (Simple) will help you create a basic test and learn about the common phases of a unit test written in PHPUnit.
Running tests (Simple) will show you how to run your tests using the command line tool and gain some insight into the various options the tool gives you.
Configuring PHPUnit (Simple) will show you how to move the configuration of PHPUnit from the command line to configuration files that can easily be shared as a part of your project.
Adding PHPUnit to your project (Simple) will teach you the steps necessary to integrate unit tests into your project.
Generating tests from code (Advanced) will show you how the PHPUnit's Skeleton Generator can be utilized to generate tests from existing code. You will even see how you can generate code stubs from tests for true test-driven development.
Using test fixtures (Simple) will teach you how to use shared fixtures to reduce code duplication and to reduce the code necessary to set up new tests.
Using data providers (Intermediate)
