NCBC-174: Fixes to invalid or missing tests

Change-Id: I0974380cd9042550a7238512c0e7e6d383f1b183
Reviewed-on: http://review.couchbase.org/24980
Reviewed-by: Saakshi Manocha <saakshi.manocha@globallogic.com>
Tested-by: Saakshi Manocha <saakshi.manocha@globallogic.com>