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How to run JUnit tests during my Ant build script assembly while at the same time omitting the test classes from my final jar?

I am using Hello World with the Ant tutorial from the Ant manual to learn about Ant.

The last part of the tutorial includes adding JUnit tests to a project.

Everything works for me, as described in the tutorial, and now I'm making some minor changes.

One of the changes I would like to make is to run tests during a typical build, but not have the * Test.class files in the final .jar file for the application. This is due to the fact that in the end I will work on a device with limited hard disk space and support only a subset of the Java SDK, so I would prefer to just completely exclude these test files from the bank.

How to do it?

It would be simple enough to create two separate banks: one for testing and one for deployment, but this seems less ideal.

My current build.xml file is below.

<property name="src.dir" value="src"/> <property name="build.dir" value="build"/> <property name="classes.dir" value="${build.dir}/classes"/> <property name="jar.dir" value="${build.dir}/jar"/> <property name="lib.dir" value="lib"/> <property name="report.dir" value="${build.dir}/junitreport"/> <property name="main-class" value="oata.HelloWorld"/> <path id="classpath"> <fileset dir="${lib.dir}" includes="**/*.jar"/> <path location="[LocalPath]/junit-4.8.2.jar"/> </path> <path id="application" location="${jar.dir}/${ant.project.name}.jar"/> <target name="clean"> <delete dir="${build.dir}"/> </target> <target name="compile"> <mkdir dir="${classes.dir}"/> <javac srcdir="${src.dir}" destdir="${classes.dir}" classpathref="classpath"/> <copy todir="${classes.dir}"> <fileset dir="${src.dir}" excludes="**/*.java"/> </copy> </target> <target name="jar" depends="compile"> <mkdir dir="${jar.dir}"/> <jar destfile="${jar.dir}/${ant.project.name}.jar" basedir="${classes.dir}"> <manifest> <attribute name="Main-Class" value="${main-class}"/> </manifest> </jar> </target> <target name="junit" depends="jar"> <mkdir dir="${report.dir}"/> <junit printsummary="yes" haltonfailure="yes" showoutput="yes"> <classpath> <path refid="classpath"/> <path refid="application"/> </classpath> <formatter type="xml"/> <batchtest fork="yes"> <fileset dir="${src.dir}" includes="*Test.java"/> </batchtest> </junit> </target> <target name="junitreport" depends="junit"> <junitreport todir="${report.dir}"> <fileset dir="${report.dir}" includes="TEST-*.xml"/> <report todir="${report.dir}"/> </junitreport> </target> <target name="run" depends="junit"> <java fork="true" classname="${main-class}"> <classpath> <path refid="classpath"/> <path refid="application"/> </classpath> </java> </target> <target name="clean-build" depends="clean,junit"/> <target name="main" depends="clean,run"/>

One thing I tried is changing the jar command to exclude * Test.class files

 ... <jar destfile="${jar.dir}/${ant.project.name}.jar" basedir="${classes.dir}" excludes="**/*Test.class"> ...

which successfully excludes test classes, but then when tests are run using the junit target, it fails with the following stack trace when launched with -v :

 [LocalPath]\build.xml:44: Test HelloWorldTest failed at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.actOnTestResult(JUnitTask.java:1863) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:814) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.executeOrQueue(JUnitTask.java:1808) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:760) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1397) at org.apache.tools.ant.Project.executeTarget(Project.java:1366) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1249) at org.apache.tools.ant.Main.runBuild(Main.java:801) at org.apache.tools.ant.Main.startAnt(Main.java:218) at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280) at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
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2 answers

Based on @Jon's advice, I changed the purpose of junit to work with the build / classes folder instead of jar and updated the dependencies accordingly.

Updated build.xml file below:

 <project name="HelloWorld" basedir="." default="main"> <property name="src.dir" value="src"/> <property name="build.dir" value="build"/> <property name="classes.dir" value="${build.dir}/classes"/> <property name="jar.dir" value="${build.dir}/jar"/> <property name="lib.dir" value="lib"/> <property name="report.dir" value="${build.dir}/junitreport"/> <property name="main-class" value="oata.HelloWorld"/> <path id="classpath"> <fileset dir="${lib.dir}" includes="**/*.jar"/> <path location="[LocalPath]/junit-4.8.2.jar"/> </path> <path id="application" location="${jar.dir}/${ant.project.name}.jar"/> <target name="clean"> <delete dir="${build.dir}"/> </target> <target name="compile"> <mkdir dir="${classes.dir}"/> <javac srcdir="${src.dir}" destdir="${classes.dir}" classpathref="classpath"/> <copy todir="${classes.dir}"> <fileset dir="${src.dir}" excludes="**/*.java"/> </copy> </target> <target name="jar" depends="junit"> <mkdir dir="${jar.dir}"/> <jar destfile="${jar.dir}/${ant.project.name}.jar" basedir="${classes.dir}" excludes="**/*Test.class"> <manifest> <attribute name="Main-Class" value="${main-class}"/> </manifest> </jar> </target> <target name="junit" depends="compile"> <mkdir dir="${report.dir}"/> <junit printsummary="yes" haltonfailure="yes" showoutput="yes"> <classpath> <path refid="classpath"/> <path location="${classes.dir}"/> </classpath> <formatter type="xml"/> <batchtest fork="yes"> <fileset dir="${src.dir}" includes="*Test.java"/> </batchtest> </junit> </target> <target name="junitreport" depends="junit"> <junitreport todir="${report.dir}"> <fileset dir="${report.dir}" includes="TEST-*.xml"/> <report todir="${report.dir}"/> </junitreport> </target> <target name="run" depends="jar"> <java fork="true" classname="${main-class}"> <classpath> <path refid="classpath"/> <path refid="application"/> </classpath> </java> </target> <target name="clean-build" depends="clean,jar"/> <target name="main" depends="clean,run"/> </project>
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Can you change:

 <target name="jar" depends="compile"> <mkdir dir="${jar.dir}"/> <jar destfile="${jar.dir}/${ant.project.name}.jar" basedir="${classes.dir}"> <manifest> <attribute name="Main-Class" value="${main-class}"/> </manifest> </jar> </target>

in

 <target name="jar" depends="junit"> <mkdir dir="${jar.dir}"/> <jar destfile="${jar.dir}/${ant.project.name}.jar"> <fileset dir="${classes.dir}" excludes="**/*Test.class"/> <manifest> <attribute name="Main-Class" value="${main-class}"/> </manifest> </jar> </target> <target name="junit" depends="compile"> <mkdir dir="${report.dir}"/> <junit printsummary="yes" haltonfailure="yes" showoutput="yes"> <classpath> <path refid="classpath"/> <path refid="application"/> </classpath> <formatter type="xml"/> <batchtest fork="yes"> <fileset dir="${src.dir}" includes="*Test.java"/> </batchtest> </junit> </target>

This should exclude test classes that I believe are from the final JAR file.

nb Change dependencies for each task.

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