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312Chapter 13JUnit: Automating Unit Testing13.7REVIEWWe have shown you how to download JUnit and get it running. We have discussedcreating a test case and creating a suite of tests. We’ve looked at theSwing GUI for JUnit but also at the command-line interface. We have shownhow our design translates to a minimal code implementation from which wecan begin testing. We’ve discussed the “design, test, then code” approach, andhow you can use it to track the progress of your implementation.13.8WHAT YOU STILL DON’T KNOWJUnit can be invoked from ant. It is an optional task (not part of the standardant release), but easy to install and get running. Both the junit.jar and ant’soptional tasks JAR file need to be in your classpath. That’s all it takes. Seehttp://ant.apache.org/manual/OptionalTasks/junit.html for moredetails.JUnit integrates well with Eclipse and other IDEs. It is easy to install andvery easy to use when it’s part of your IDE. For whichever IDE you choose,get the JUnit plug-in for it and use it.One area we haven’t yet discussed is how to do unit testing for the GUIportion of your application. The basic idea is the same. In order to manipulateyour GUI from the test, you may want to investigate the java.awt.Robotclass. It can be used to generate system input events such as mouse andkeyboard actions.In fact, we’ve only begun to describe the various ways that JUnit can beused for all kinds of testing. Our focus has been on unit tests during code development,but JUnit can also be applied to integration and release testing. Withany large Java application, it is crucial to have a good set of regression tests thatcan be rerun after features or fixes are added, or after classes have beenrefactored. JUnit has proven to be very valuable in these situations.Finally, remember that JUnit is only a tool. The GIGO law 2 tells us notto expect great tests just because we know how to run a tool. Test design, likeany good design skill, is art as well as science. Learning the art of testing willpay dividends in better code built faster.2. Garbage In, Garbage Out.
13.10 Exercises31313.9RESOURCESVisit http://www.junit.org/ for all things JUnit-y, including some documentation(though it’s not the greatest) and scores of articles which providetons of useful information.A very good article on JUnit appeared in the May/June 2003 issue ofOracle magazine (online at http://otn.oracle.com/oraclemagazine),titled “A JUnit Step-by-Step,” by Michel Casabianca.For more about software testing in general, there is a classic (that is, fromearly days of computing) book on the subject: Glenford J. Myers, The Art ofSoftware Testing, Wiley, New York, 1979.You may also want to check out Just Enough Software Test Automation byDaniel J. Mosley and Bruce A. Posey (ISBN 0-13-008468-9, 2002). TheirWeb site 3 includes a bibliography of nearly hundred articles and books onclient-server and other software testing topics.13.10EXERCISESHow many other tests can you think up to add to the AccountTest class? Didyou include checks for bad behavior—for example, attempting to make toomany subaccounts? Add the new asserts and rerun the test.3. http://www.csst-technologies.com/csstbibl.htm
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Java Application
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Java Application
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To my mother, for her love of words
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viiiContents1.41.51.6Chapter 22.12.
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xContents5.65.75.85.95.105.115.125.
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xivContentsChapter 1313.113.213.313
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PrefaceJAVA AND LINUXWhy another bo
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PrefacexxiiiFREE SOFTWARE AND JAVAG
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Prefacexxvand Tyrrell Albaugh, who
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xxviiiIntroductionIf you are an exp
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xxxIntroductionThe Linux Newbie Pat
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Part IGetting Started
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4Chapter 1An Embarrassment of Riche
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10Chapter 1An Embarrassment of Rich
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Chapter 2An Embarrassment of Riches
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2.2 Eye to Eye with vi35of their co
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2.2 Eye to Eye with vi37• L (“l
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2.2 Eye to Eye with vi39In both cas
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2.2 Eye to Eye with vi41• :7,.w!
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2.2 Eye to Eye with vi431,$s/Tryout
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2.3 Editors Galore45affected by thi
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2.3 Editors Galore47has a huge lear
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2.6 Resources49• fte is an editor
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52Chapter 3An Experienced Programme
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100Chapter 4Where Am I? Execution C
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116Chapter 5The Sun Microsystems Ja
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168Chapter 6The IBM Developer Kit f
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Chapter 7The GNU Compiler for Java(
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7.4 Compiling Our Simple Ap
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7.4 Compiling Our Simple Ap
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7.5 Options and Switches1857.5OPTIO
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7.9 What You Still Don’t Know187o
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Chapter 8Know What You Have:CVSSour
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8.2 Source Control: Whys and Hows19
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8.3 A GUI: jCVS211and the differenc
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8.4 Review213Figure 8.7 jCVS checko
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Chapter 9Ant:An IntroductionAnt 1 i
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9.3 Obtaining and Installing Ant217
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9.3 Obtaining and Installing Ant219
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9.4 A Sample Ant Buildfile221standa
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9.4 A Sample Ant Buildfile2239.4.2.
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9.4 A Sample Ant Buildfile225$ antB
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9.4 A Sample Ant Buildfile227debugI
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9.4 A Sample Ant Buildfile229Exampl
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9.4 A Sample Ant Buildfile231Runnin
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9.7 Resources233• O’Reilly has
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236Chapter 10Integrated Dev
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Page 351 and 352: 14.7 Beyond the Basics319files, and
Page 353 and 354: 14.7 Beyond the Basics321Hibernate
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Page 357 and 358: 14.10 Review32514.9.4 Straight JDBC
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Page 361 and 362: 15.3 Making Connections329These thr
Page 363 and 364: 15.3 Making Connections331Example 1
Page 365 and 366: 15.4 Querying Data333// queryString
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362Chapter 16Getting in the Swing o
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378Chapter 17Other Ways: Alternativ
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Part IVDevelopingWeb Interfaces
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404Chapter 18Servlets: Java Pressed
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19.5 Review439into JSP files. The m
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444Chapter 20Open Source Web <stron
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494Chapter 22Building an EJBclasses
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496Chapter 22Building an EJBwhich,
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498Chapter 22Building an EJBExample
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500Chapter 22Building an EJBExample
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502Chapter 22Building an EJBIf you
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23.3 Deploying the EAR515automatic
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522Chapter 24Parting ShotsThe three
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524Chapter 24Parting ShotsPrentice
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526Appendix AASCII ChartInt Oct Hex
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528Appendix BA Java Swing GUI for B
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Appendix CGNUGeneral Public License
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C.2 Terms and Conditions for Copyin
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C.2 Terms and Conditions for Copyin
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C.3 NO WARRANTY545of this License,
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C.5 How to Apply These Terms to You
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550Index$ (dollar)in format fields,
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552Indexbreak statement, 67, 74-75b
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554IndexCVS_RSH environment variabl
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556IndexFfail(), 307false constant,
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558IndexIBM, 236, 377, 518Common Pu
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560IndexJNDI (Java Naming and Direc
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562IndexNetBeans (continued)running
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564IndexScrollBar class, 385search
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566IndexTable class, 386, 394-395ta
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