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Automated Test Generation for Structured Text Language using UPPAAL Model Checker

Authors:

Filip Markovic

Note:

Master Thesis

Research group:

Industrial Software Engineering

Publication Type:

Student Thesis

Abstract

In this research we addressed the problem of test case generation for the Structured Text (ST) programming language from the IEC 61131-3 PLC standard. ST is a non-executable programming language with a standardization purpose for the runtime PLC programming languages. Therefore, it needs to be formalized before the test case generation. For that purpose we used UPPAAL model checker because of its analogy with certain elements in ST language and the possibility of deriving test cases for achieving maximum logic coverage. Although UPPAAL model checker is not specifically intended for the purpose of test case generation we overcome this constraint by conducting the transformation defined in this research. In order to achieve maximum logic coverage we use a defined annotation concept for targeted logic elements (clauses and predicates). We also showed how to implement a tool-supported approach suitable for industrial adoption. With that in mind we also conducted test generation results and performance analysis, comparing them with results provided in similar research for IEC 61131-3 FBD programming language. The results in this thesis show performance improvements in terms of generation time and memory consumption when using this novel transformation. With the approach defined in this thesis, test generation for certain type of FBD programs, which are translatable to ST, could be improved in terms of efficiency of generating these tests. Finally, we provided the answer to the question of what is the achievable formalization level from ST to UPPAL model checker.

Bibtex

@mastersthesis{Markovic4777,
author = {Filip Markovic},
title = {Automated Test Generation for Structured Text Language using UPPAAL Model Checker},
note = {Master Thesis},
month = {June},
year = {2015},
url = {http://www.es.mdu.se/publications/4777-}
}