On Sun, 18 Nov 2001 17:15, Jeff Turner wrote:
> Hi,
>
> I'm trying to use <taskdef> to define the <junit> task, so I don't have
> to require all users to copy junit.jar to the $ANT_HOME/lib.
>
> I currently have:
>
> <project name="test_taskdef" default="main" basedir=".">
> <property name="build.sysclasspath" value="ignore"/>
>
> <target name="main">
> <echo>Using jar ${ant.home}/lib/optional.jar</echo>
> <taskdef name="junit"
> classname="org.apache.tools.ant.taskdefs.optional.junit.JUnitTask">
> <classpath>
> <pathelement location="${ant.home}/lib/optional.jar"/>
> </classpath>
> </taskdef>
> </target>
> </project>
I think you missed a classpath element out of there ;) However even if you
add junit.jar into classpath it will still not work .. see below.
>
> I get the error:
>
> /home/jeff/tmp/java/ant/taskdef/build.xml:8: taskdef class
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTask cannot be found
>
> I've verified that ${ant.home}/lib/optional.jar exists and contains that
> class. Should this be possible? I've tested with Ant 1.4 and the latest
> from CVS.
Unfortunately it isn't possible. The reason is that Ant will go looking for
the junit task. It will first call the loadClass() in the ClassLoader created
by taskdef. However this ClassLoader will first check the parent classloader
for the junit class. It will find the junit class (because it is in
${ant.home}/lib/optional.jar). However unless junit.jar is also in the parent
classloader, the JVM will be unable to locate the required junit classes and
thus will report that it fails to load the junit task.
So you will have to remove optional.jar from ${ant.home}/lib if you want to
taskdef junit.
--
Cheers,
Pete
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