How do I pass an argument to an Ant task?

Question

I'm not very good with Ant, but we're using it as a build tool. Right now, we can run "ant test" and it'll run through all the unit tests.

However, I'd love to be able to do something like ant test some_module and have it accept some_module as a parameter, and only test that.

I haven't been able to find how to pass command line args to Ant - any ideas?

Answer 1

One solution might be as follows. (I have a project that does this.)

Have a separate target similar to test with a fileset that restricts the test to one class only. Then pass the name of that class using -D at the ant command line:

ant -Dtest.module=MyClassUnderTest single_test 

In the build.xml (highly reduced):

<target name="single_test" depends="compile" description="Run one unit test">     <junit>         <batchtest>             <fileset dir="${test.dir}" includes="**/${test.module}.class" />         </batchtest>     </junit> </target>