This paper compares two methods of generating tests from formal specifications. The Test Template Framework (TTF) method is a framework and set of heuristics for manually generating test sets from a Z specification. The B Testing Tools (BTT) method uses constraint logic programming techniques to generate test sequences from a B specification. We give a concise description of each method, then compare them on an industrial case study, which is a subset of the GSM 11.11 smart card specification.
