Summary

This Recommendation defines GFT, a graphical presentation format for TTCN-3 (Testing and Test Control Notation 3) Core Language defined in ITU‑T Rec. Z.140. GFT is used for the graphical presentation of test behaviour in form of a subset of Message Sequence Charts as defined in ITU‑T Rec. Z.120 with test-specific extensions. GFT provides a number of graphical symbols to enable the graphical presentation of TTCN-3 test cases, functions, altsteps and control parts. GFT can be applied whenever it is necessary to define or document test behaviour graphically.

This Recommendation is based on the core TTCN-3 language defined in ITU-T Rec. Z.140. It is particularly suited to display tests as GFTs. It is not limited to any particular kind of test specification.