LUCENE-5666: fix test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5666@1594612 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5666: fix javadocs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5666@1594615 13f79535-47bb-0310-9956-ffa450edef68