My test suite contains a library sources that have package-info.java files.

Example attached.

My TEST.properties file contains:
> # Directories containing TestNG-style tests
> TestNG.dirs=SwingSet
>
> # Default library directories used by all tests
> lib.dirs=lib/jemmy/src lib/Jemmy2Ext/src lib/SwingSet3/src

When I run a test, I'm getting the following failure (attached):

test result: Error. Parse Exception: Bad classname provided for `build': org.netbeans.jemmy.drivers.buttons.package-info