STING> The process of exercising a product to identify differences between expected and actual behaviour. Typically teSTING is bottom-up: unit teSTING and integration teSTING by developers, system teSTING by testers, and {user acceptance teSTING} by users. Test coverage attempts to assess how complete a test has been. 2. The second stage in a generate and test search algorithm. [Jargon File] (2003-09-24)