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Dr Patrick Wacht

CSCAN Network Research Student

Brief biographical information


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Framework for Automated Functional Tests within Value-Added Service Environments

Recent years have witnessed that standard telecommunication services evolved more and more to next generation value-added services. This fact is accompanied by a change of service characteristics as new services are designed to fulfil the customer’s demands instead of just focussing on technologies and protocols. These demands can be very specific and, therefore, diverse potential service functionalities have to be considered by the service providers. To make matters worse for service providers, a fast transition from concept to market product and low price of a new service is required due to the increasing competition in the telecommunication industry. Therefore, effective test solutions need to be developed that can be integrated in current value-added service development lifecycles. Besides, these solutions should support the involvement of all participating stakeholders such as the service provider, the test developers as well as the service developers, and, in order to consider an agile approach, also the service customer.
This thesis proposes a novel framework for functional testing that is based on a new sort of description language for value-added services (Service Test Description). Based on instances of the Service Test Description, sets of reusable test components described by means of an applied Statecharts notation are automatically selected and composed to socalled behaviour models. From the behaviour models, abstract test cases can be automatically generated which are then transformed to TTCN-3 test cases and then assembled to an Executable Test Suite. Within a TTCN-3 test system, the Executable Test Suite can be executed against the corresponding value-added service referred to as System Under Test. One benefit of the proposed framework is its application within standard development life-cycles. Therefore, the thesis presents a methodology that considers both service development and test development as parallel tasks and foresees procedures to synchronise the tasks and to allow an agile approach with customer involvement.
The novel framework is validated through a proof-of-concept working prototype. Example value-added services have been chosen to illustrate the whole process from compiling instances of the Service Test Description until the execution of automated tests.
Overall, this thesis presents a novel solution for service providers to improve the quality of their provided value-added services through automated functional testing procedures. It enables the early involvement of the customers into the service development life-cycle and also helps test developers and service developers to collaborate

Dr Patrick Wacht

Director of studies: Prof. Dr Woldemar Fuhrmann
Other supervisors: Prof. Dr Ulrich Trick, Dr Bogdan Ghita

Conference papers

Efficient Test Case Derivation from Statecharts-Based Models
Wacht P, Trick U, Fuhrmann W, Ghita BV
Proceedings of the Eleventh International Network Conference (INC 2016), Frankfurt, Germany, July 19-21, pp127-132, ISBN: 978-1-84102-410-3, 2016
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A New Approach to Model a Formalised Description of a Communication Service for the Purpose of Functional Testing
Wacht P, Eichelmann T, Lehmann A, Fuhrmann W, Trick U, Ghita BV
Proceedings of the Fourth International Conference on Internet Technologies and Applications (ITA 11), 6-9 September 2011, Wrexham, UK, pp 262-269, ISBN: 978-0-946881-68-0, 2011
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2 Conference papers

Internal publications

Integration of Model-Based Functional Testing Procedures within a Creation Environment for Value Added Services
Wacht P, Lehmann A, Eichelmann T, Fuhrmann W, Trick U, Ghita BV
Proceedings of the Sixth Collaborative Research Symposium on Security, E-learning, Internet and Networking (SEIN 2010), Plymouth, UK, ISBN: 978-1-84102-269-7, pp61-73, 2010
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1 Internal publications

3 publication(s) - all categories.