Question

I’m trying to run some tests in Ant presently using JUnit, and all of my tests are failing with the following stacktrace:

java.lang.ClassNotFoundException: com.mypackage.MyTestCase

It doesn’t make too much sense to me. I’m first compiling my test cases using <javac>, then directly running the <junit> task to run the tests. My buildfile looks like this:

<target name="compile.webapp.tests" depends="compile.webapp">
    <javac srcdir="${test.java.src.dir}"
            destdir="${test.java.bin.dir}">
        <classpath>
            <filelist>
                <file name="${red5.home}/red5.jar"/>
                <file name="${red5.home}/boot.jar"/>
                <file name="${bin.dir}/${ant.project.name}.jar"/>
            </filelist>
            <fileset dir="${red5.lib.dir}" includes="**/*"/>
            <fileset dir="${main.java.lib.dir}" includes="**/*"/>
            <fileset dir="${test.java.lib.dir}" includes="**/*"/>
        </classpath>
    </javac>
</target>

<target name="run.webapp.tests" depends="compile.webapp.tests">
    <junit printsummary="true">
        <classpath>
            <filelist>
                <file name="${red5.home}/red5.jar"/>
                <file name="${red5.home}/boot.jar"/>
                <file name="${bin.dir}/${ant.project.name}.jar"/>
            </filelist>
            <fileset dir="${red5.lib.dir}" includes="**/*.jar"/>
            <fileset dir="${main.java.lib.dir}" includes="**/*.jar"/>
            <fileset dir="${test.java.lib.dir}" includes="**/*.jar"/>
            <fileset dir="${test.java.bin.dir}" includes="**/*.class"/>
        </classpath>
        
        <formatter type="xml"/>
        
        <batchtest todir="${test.java.output.dir}">
            <fileset dir="${test.java.bin.dir}" includes="**/*TestCase*"/>
        </batchtest>
    </junit>
    
    <junitreport>
        <fileset dir="${test.java.output.dir}" includes="**/*"/>
        <report todir="${test.java.report.dir}"/>
    </junitreport>
</target>

This is really weird, I can’t seem to fix this. Is there something I’m doing wrong here?
My project’s directory layout looks somewhat like this:

${basedir}/src/test/java # this is "test.java.src.dir"
${basedir}/build/test/java # this is "test.java.bin.dir"
${basedir}/lib/main/java # this is "main.java.lib.dir"
${basedir}/lib/test/java # this is "test.java.lib.dir"
${basedir}/build/test/junit # this is "test.java.output.dir"

My complete buildfile is available here: http://pastebin.com/SVnciGKR
My properties file is available here: http://pastebin.com/9LCtNQUq

---

UPDATE

By modifying my targets to look like below, I was able to get things working. Unfortunately, I have to manually embed ant-junit.jar and junit.jar into my repository, but it works, so I guess this solves it. If anyone can help me get rid of the need to embed ant-junit.jar and junit.jar, I’d really appreciate it:

<path id="webapp.tests.path" >
    <pathelement location="${red5.home}/red5.jar"/>
    <pathelement location="${red5.home}/boot.jar"/>
    <pathelement location="${bin.dir}/${ant.project.name}.jar"/>
    <pathelement path="${red5.lib.dir}"/>
    <pathelement path="${main.java.lib.dir}"/>
    <pathelement path="${test.java.lib.dir}"/>
</path>

<target name="compile.webapp.tests" depends="compile.webapp">
    <javac srcdir="${test.java.src.dir}"
            destdir="${test.java.bin.dir}">
        <classpath refid="webapp.tests.path"/>
    </javac>
</target>

<target name="run.webapp.tests" depends="compile.webapp.tests">     
    <junit printsummary="true">
        <classpath>
            <path refid="webapp.tests.path"/>
            <pathelement location="${test.lib.dir}/ant/ant-junit.jar"/>
            <pathelement location="${test.lib.dir}/ant/junit-4.8.2.jar"/>
            <pathelement path="${test.java.bin.dir}"/>
        </classpath>
        
        <formatter type="xml"/>
        
        <batchtest todir="${test.java.output.dir}">
            <fileset dir="${test.java.bin.dir}" includes="**/*TestCase*"/>
        </batchtest>
    </junit>
    
    <junitreport todir="${test.java.report.dir}">
        <fileset dir="${test.java.output.dir}" includes="**/*"/>
        <report todir="${test.java.report.dir}"/>
    </junitreport>
    
    <delete file="${test.java.report.dir}/TESTS-TestSuites.xml"/>
</target>

If I don’t include the jars in the classpath, I get errors telling me that junit.jar must be on the classpath in order to run the <junit> task. Weird, huh?

Answer 1

According to the ANT documentation for JUnit Task you have to do one of the following options to get junit tests to run as there is a dependency on an the junit.jar which is external to ANT:

Note: You must have junit.jar
available. You can do one of:

1. Put both junit.jar and ant-junit.jar in ANT_HOME/lib.
2. Do not put either in ANT_HOME/lib, and instead include their locations in
   your CLASSPATH environment variable.
3. Add both JARs to your classpath using -lib.
4. Specify the locations of both JARs using a element in a
   in the build file.
5. Leave ant-junit.jar in its default location in ANT_HOME/lib but include
   junit.jar in the passed to
   <junit>. (since Ant 1.7)

I have verified that #1, putting junit.jar in ANT_HOME\lib worked (ant-junit.jar was already there, ANT 1.8.0) and I did not need to specify a junit.jar in the classpath for the JUNIT tag. Essentially you took option #5.