Failing FullTextSearchScoreImpl unit test with native sort activated

When switching on native sort, the FullTextSearchScoreImpl unit test starts to fail now and then.#

The problem seems to be in: QueryEngine.createSortFields in

if (JcrConstants.JCR_SCORE.equals(p)) {
sortFields.add(new SortField(null, SortField.SCORE, !isAsc));

here the order by function in the query is: SCORE(s) and not jcr:score, so the check needs to be changed.

Furthermore I think the parameter passed into SortField should be isAsc and not its negation: !isAcs . If isAsc is true, then reverse in Lucene should be true, because score ascending in JCR spec means score descending in Lucene (see comment before the mentioned lines).