I\'m trying to run my junit test (to verify that a properties file loads correctly) but
I get ClassNotFoundException although the class is there and all requir
Are you sure your test class is in the build folder? You're invoking junit in a separate JVM (fork=true) so it's possible that working folder would change during that invocation and with build being relative, that may cause a problem.
Run ant from command line (not from Eclipse) with -verbose or -debug switch to see the detailed classpath / working dir junit is being invoked with and post the results back here if you're still can't resolve this issue.