CBQE-1997:tuq: add test for new case synt

Change-Id: Ib5f9acc2ff4c555cd9cdbbc8a8e1e5e123767c86
Reviewed-on: http://review.couchbase.org/33399
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>