CBQE-0:fix value() test

Change-Id: Ieb7172210c5ff8df2624186e72aca73312409918
Reviewed-on: http://review.couchbase.org/33739
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>