Fall 2007CS 2251 Programming Tools Eclipse JUnit Testing make and ant

Fall 2007CS 2252 Eclipse command line arguments

Fall 2007CS 2253 Debugging in Eclipse

Fall 2007CS 2254 JUnit Testing JUnit is an open-source testing framework for Java You can create test cases and test suites by extending the appropriate class from the JUnit package

Fall 2007CS 2255 JUnit Testing JUnit has been integrated into Eclipse Make sure junit.jar is on the build path –use the Properties menu –or let Eclipse find it when you create the test case Create a test case –File -> New -> JUnit Test Case Run your application as a JUnit Test

Fall 2007CS 2256 In the TestCase class Write methods that test each of the methods of your class –use the assertion methods on next slide for testing results of methods You can override setup() and teardown() to create a set of objects to be shared by several tests

Fall 2007CS 2257 Assertion methods assertEquals( expected, actual) assertFalse( condition), assertTrue(condition) assertNull( object), assertNotNull( object) assertSame( ecpected, actual), assertNotSame(expected, actual) And many more

Fall 2007CS 2258 Sources of Information The home page for JUnit is at The documentation is at

Fall 2007CS 2259 Building Big Projects For very large projects, the process of recompiling all the modules that make up the project can take a long time. One way to reduce the amount of time needed to build a project is to only recompile the modules that have not changed and don't use modules that have changed. Two tools that determine what needs to be recompiled. –make –ant (for Java)

Fall 2007CS The make Utility make is a command generator designed to help you manage large projects –make allows you to specify dependencies between modules if a class depends on another class, it should be recompiled when that class changes –make allows you to specify how to compile a particular class –make uses these specifications to determine the minimum amount of work needed to recompile a program

Fall 2007CS How does make Work? make uses a file called Makefile (or makefile or GNUMakefile) to determine what needs to be recompiled. The makefile contains a set of rules for executing the jobs it can be asked to do. When you run make, it uses the rules in the makefile to determine what needs to be done. make does the minimum amount of work needed to get the job done.

Fall 2007CS The Makefile A make file consists of a set of rules Each rule has the form target: dependencies commands target is (usually) the name of a file to be created dependencies are the names of files that are needed to create the target commands is one or more commands that need to be executed to create the target. Each command is indented with a tab

Fall 2007CS Example TestPriorityQueue uses KWPriorityQueue. PrintDocument and ComparePrintDocuments objects ComparePrintDocuments uses PrintDocument objects KWPriorityQueue implements Queue

Fall 2007CS makefile TestPriorityQueue.class: TestPriorityQueue.java \ KWPriorityQueue.class PrintDocument.class \ ComparePrintDocuments.class javac TestPriorityQueue.java KWPriorityQueue.class: KWPriorityQueue.java Queue.class javac KWPriorityQueue.java Queue.class: Queue.java javac Queue.java

Fall 2007CS makefile (cont.) ComparePrintDocuments.class: \ ComparePrintDocuments.java PrintDocument.class javac ComparePrintDocuments.java PrintDocument.class: PrintDocument.java javac PrintDocument.java

Fall 2007CS Dummy targets The makefile can also have targets that don’t create files A target to run a java program TestPriorityQueue: TestPriorityQueue.class java TestPriorityQueue A target to remove class files clean: rm -f *.class

Fall 2007CS Sources of Information Managing Projects with make by Andrew Oram and Steve Talbot make_toc.htmlhttp:// make_toc.html Look at the man page man make

Fall 2007CS Ant make can be used with Java files ant was designed for building large Java projects –acronym for "Another Neat Tool" Ant uses XML format for build files

Fall 2007CS build files A build file is an xml file that contains exactly one project element main is target to build if none is given name and basedir are optional attributes for project

Fall 2007CS Targets A project element contains one or more targets Each target corresponds to a task –the main target is required depends attribute contains list of targets that this target needs

Fall 2007CS Tasks Each target contains one or more tasks There are a number of built-in tasks –java needs the classname attribute to be set to the main class –javac –jar - to create a java archive –javadoc - to create the documentation

Fall 2007CS Sources of Information Ant The Definitive Guide by Steve Holzner Ant is an open source Apache project –