1. A system for testing of control devices, the system comprising: a computer memory that stores a grammar comprising one or more terminal symbols with tags that describe a set of test cases; and a processor that: identifies at least one of the number and description of test cases from the testing grammar by identifying terminal symbols within the grammar and without generating the set of test cases from the testing grammar; and modifies at least one tag in the grammar based on the identified at least of the number and description of test cases.