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Editorial Team
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Asked: 2026-05-12T06:55:19+00:00

I have a straightforward maven2 java project (JMS relaying system). After we released the

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I have a straightforward maven2 java project (JMS relaying system). After we released the first version, we found that we spent more time configuring maven than actually coding.

For the next release we wanted to clean up the build process and someone suggested migrating to builder. So I was tasked with doing just that.

I setup buildr (1.3.4) according to the documentation on their website. And then from the root of the project I typed the buildr command and then informed buildr to create the build file based upon my pom.xml. That processed fine and compiled all the code. All was gravy until buildr started running the tests. Here is the ouput:

Test framework error: taskdef class org.apache.tools.ant.taskdefs.optional.junit.JUnitTask cannot be found

Obviously the class specified isn’t in my classpath. However, the buildr documentation says that all the required items needed for basic testing are included. Their documentation doesn’t say that they need any specific libraries for ant or a version of ant. Although I do have ant 1.7.0 installed (not included in my classpath however).

Has anyone seen this before?

Update

I located the infamous ant-optional jar on the maven repository. Including that in my test.with options did not resolve the issue.

Running the buildr command with –trace gives this extra information… 

Tests failed!
/pathtoruby/buildr-1.3.4/lib/buildr/core/test.rb:455:in `run_tests'
/pathtoruby/buildr-1.3.4/lib/buildr/core/test.rb:199:in `initialize'
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1 Answer

  1. Editorial Team

    Found the issue… Apparently there is an ant-junit.jar that is needed but for whatever reason in my local repository it was owned by root and not my local user account (OSX system). So it wasn’t accessible to buildr. I deleted the items from my local repository and reran buildr (it downloaded the needed items).

    Update

    Also this caused a few other issues. It seems that a few other items in my local repository had strange permissions. I ended up just archiving my repository and letting maven reconstruct it. This resolved all my issues. I now have a nice build file that is 25 lines of code compared to my previous pom.xml file that was over 100 lines.

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