JUnit in Action, 2nd edition PDF
Preview JUnit in Action, 2nd edition
Covers JUnit 4.8 Petar Tahchiev Felipe Leme Vincent Massol Gary Gregory IN ACTION SECOND EDITION M A N N I N G Praise for the First Edition The definitive how-to manual for unit testing Java EE components. Pick up one of the other books if you’re looking for something more motivational, but when you’re ready to sit down and bang out some code, you’ll want this book at your side. —JavaRanch.com I would definitely recommend JUnit in Action for anyone interested in testing their code.… It is a book that flows nicely, and offers a great mix of technology theory and how to put it all into practice. —TheServerSide.com An essential guide for intermediate level Java programmers who want to learn how to build Java EE applications properly...clear, simple and fun...the best I have seen thus far…. The book actually goes into detail about using mock objects and stubs, further expanding your understanding of basic software design…. I highly recom- mend it. —Killersites.com Not a JUnit tutorial, it covers JUnit in depth. It also explains the importance of JUnit in the context of software development process. This well-edited book is highly recom- mended both for the beginner and advanced users of JUnit. —Denver JUG With a number of Manning books I can see myself start to think differently about problems and so I end up being a better developer; JUnit in Action was like that for me. At first it bothered me that I was changing my code in order to test it, but then I started seeing that the changes made the code better overall. Now my code is littered with factory methods and similar patterns. You guys are doing good stuff. —Joshua Smith, a reader The examples are clear and real-world. The authors address the complex issues of unit testing EJBs and web apps head-on. They don’t shy away from the real issues that come with testing these kinds of applications. —Wade Matveyenko, a reader JUnit in Action SECOND EDITION PETAR TAHCHIEV FELIPE LEME VINCENT MASSOL GARY GREGORY MANNING Greenwich (74° w. long.) For online information and ordering of this and other Manning books, please visit www.manning.com. The publisher offers discounts on this book when ordered in quantity. For more information, please contact Special Sales Department Manning Publications Co. 180 Broad St. Suite 1323 Stamford, CT 06901 Email: [email protected] ©2011 by Manning Publications Co. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by means electronic, mechanical, photocopying, or otherwise, without prior written permission of the publisher. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in the book, and Manning Publications was aware of a trademark claim, the designations have been printed in initial caps or all caps. Recognizing the importance of preserving what has been written, it is Manning’s policy to have the books we publish printed on acid-free paper, and we exert our best efforts to that end. Recognizing also our responsibility to conserve the resources of our planet, Manning books are printed on paper that is at least 15 percent recycled and processed without the use of elemental chlorine. Development Editor: Sebastian Stirling Manning Publications Co. Copyeditor: Linda Recktenwald 180 Broad St. Proofreader: Katie Tennant Suite 1323 Typesetters: Dennis Dalinnik Stamford, CT 06901 Cover designer: Marija Tudor ISBN 9781935182023 Printed in the United States of America 1 2 3 4 5 6 7 8 9 10 – MAL – 16 15 14 13 12 11 10 To my sister Hrissy; you showed me what real courage means —P.T. To the memory of my father, Leonidas de Almeida Leme —F.L. To my wife, Marie-Albane, and my children, Paul, Jean, and Pierre-Olivier —V.M. To my loving family: my wife Lori, my son Alexander, my mother Micheline, and to the memory of my father Greg —G.G. brief contents PART 1 JUNIT ESSENTIALS........................................................ 1 1 ■ JUnit jump-start 3 2 ■ Exploring core JUnit 14 3 ■ Mastering JUnit 25 4 ■ Software testing principles 53 PART 2 DIFFERENT TESTING STRATEGIES ................................ 65 5 ■ Test coverage and development 67 6 ■ Coarse-grained testing with stubs 84 7 ■ Testing with mock objects 99 8 ■ In-container testing 126 PART 3 JUNIT AND THE BUILD PROCESS.................................135 9 ■ Running JUnit tests from Ant 137 10 ■ Running JUnit tests from Maven2 152 11 ■ Continuous integration tools 169 vii viii BRIEF CONTENTS PART 4 JUNIT EXTENSIONS................................................... 187 12 ■ Presentation-layer testing 189 13 ■ Ajax testing 224 14 ■ Server-side Java testing with Cactus 259 15 ■ Testing JSF applications 292 16 ■ Testing OSGi components 310 17 ■ Testing database access 326 18 ■ Testing JPA-based applications 360 19 ■ JUnit on steroids 389 contents preface xix preface to the first edition xxi acknowledgments xxiii about this book xxv about the authors xxx about the cover illustration xxxii PART I JUNIT ESSENTIALS ............................................ 1 1 JUnit jump-start 3 1.1 Proving it works 4 1.2 Starting from scratch 6 1.3 Understanding unit testing frameworks 8 1.4 JUnit design goals 9 1.5 Setting up JUnit 9 1.6 Testing with JUnit 10 1.7 Summary 13 2 Exploring core JUnit 14 2.1 Exploring core JUnit 15 ix
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