give better message when a test string fails to parse
give better message when a test string fails to parse

chadaustin/sajson,chadaustin/sajson,t089/sajson,t089/sajson,chadaustin/sajson,iboB/sajson,chadaustin/sajson,chadaustin/sajson,t089/sajson,iboB/sajson,t089/sajson,iboB/sajson,iboB/sajson,chadaustin/sajson,iboB/sajson,t089/sajson,iboB/sajson