custom-buildr.rb

# an example for setting the classpath in a custom buildr task

    task :threadingtest => [:compile, :test] do
      # this will give us the project dependencies
      specs = (project.compile.dependencies + project.test.compile.dependencies).flatten
      # this turns them into the proper string representation
      cp = Buildr.artifacts(specs).each(&:invoke).map(&:name).join(File::PATH_SEPARATOR)
      # last we need to add our compiled classes
      cp = cp + ":" + path_to('target', 'classes') + ":" + path_to('target', 'test', 'classes')
      cmd = "java -cp #{cp} org.junit.runner.JUnitCore com.jaydonnell.javautils.MultiThreadedIT"
      system cmd
    end