add unit test

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1476751 13f79535-47bb-0310-9956-ffa450edef68
fix osgi metadatas

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1476752 13f79535-47bb-0310-9956-ffa450edef68
add missing license header

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1476753 13f79535-47bb-0310-9956-ffa450edef68