Test result analysis and validation of test verdicts

Formal description techniques (FDT's) are useful in the protocol development cycle, particulary in the conformance testing area. In this paper, we present TETRA, a test and trace analysis tool based on the LOTOS FDT which can be used to automatically compare the specified verdicts of a conformance test case with a protocol specification, or to analyse results of a test run with the reference specification. We also describe our experience with this tool for the validation of a X.25 TTCN test suite and for the testing of an ACSE implementation.