System 75: GAMUT: A message utility system for automatic testing

GAMUT is an automated testing tool that can verify message activity in message-based systems. This tool is unique because it can be customized for application to a variety of systems and used in all test phases of a development cycle. Using a single interface, rather than an array of port-specific interfaces, GAMUT can generate and verify load traffic through scripts, as well as provide an automatic record and playback mechanism for feature testing. This paper discusses the design philosophy and distinctive features of GAMUT as well as its architecture. It illustrates message definition and the script command language by building a sample test script of a station-to-station call on the System 75 office communications system and concludes with a discussion of challenges and problems encountered while using the tool to test System 75.