A TTCN-3 based online test and validation platform for Internet services

Deussen, Peter; Din, George; Schieferdecker, Ina

doi:10.1109/isads.2003.1193946

Cited by 21 publications

(13 citation statements)

References 6 publications

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“…We distinguish research for testing protocol based applications [15,22], Web services [16,23], Web applications [24][25][26] and also real time and embedded systems [27,28]. To the best of our knowledge, [9] is the only previous paper presenting ideas on using TTCN-3 standard for online validation and testing of internet services. However, this work did not deal with test isolation issues when testing is applied in the production phase.…”

Section: Related Workmentioning

confidence: 99%

“…Furthermore, they are using at most one technique to isolate runtime tests in the aim of reducing the interference between business and test data. To the best of our knowledge, only one approach presented in [9] uses TTCN-3 standard for online validation and testing of internet services. However, this work did not deal with test isolation issues when testing is applied in the production phase.…”

Section: Introductionmentioning

confidence: 99%

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Towards a TTCN-3 Test System for Runtime Testing of Adaptable and Distributed Systems

Lahami

Fakhfakh

Krichen

et al. 2012

Testing Software and Systems

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Abstract. Today, adaptable and distributed component based systems need to be checked and validated in order to ensure their correctness and trustworthiness when dynamic changes occur. Traditional testing techniques can not be used since they are applied during the development phase. Therefore, runtime testing is emerging as a novel solution for the validation of highly dynamic systems at runtime. In this paper, we illustrate how a platform independent test system based on the TTCN-3 standard can be used to execute runtime tests. The proposed test system is called TT4RT: TTCN-3 test system for Runtime Testing. A case study in the telemedicine field is used as an illustration to show the relevance of the proposed test system.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Towards a TTCN-3 Test System for Runtime Testing of Adaptable and Distributed Systems

Lahami

Fakhfakh

Krichen

et al. 2012

Testing Software and Systems

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“…Regression testing is essential due to the fact that service compositions can change in response to the evolution of the aggregated services or to other changes in the context of the service-based application. Yet, although dynamicity has been acknowledged as an important characteristic of service-based applications and many of the testing techniques support the automatic generation and execution of test cases, there are only few initial contributions that propose to perform online tests, i.e., to execute tests during the operation phase of the service-based application (Deussen et al 2003;Bai et al 2007a). An interesting approach in this area is proposed by Bertolino et al They extend a registry in a way that it can behave as an accredited testing body by performing an "audition testing" on new services (Bertolino and Polini 2005).…”

Section: Service Quality Assurancementioning

confidence: 99%

A journey to highly dynamic, self-adaptive service-based applications

et al. 2008

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Future software systems will operate in a highly dynamic world. Systems will need to operate correctly despite of unespected changes in factors such as environmental conditions, user requirements, technology, legal regulations, and market opportunities. They will have to operate in a constantly evolving environment that includes people, content, electronic devices, and legacy systems. They will thus need the ability to continuously adapt themselves in an automated manner to react to those changes. To realize dynamic, self-adaptive systems, the service concept has emerged as a suitable abstraction mechanism. Together with the concept of the service-oriented architecture (SOA), this led to the development of technologies, standards, and methods to build service-based applications by flexibly aggregating individual services. This article discusses how those concepts came to be by taking two complementary viewpoints. On the one hand, it evaluates the progress in software technologies and methodologies that led to the service concept and SOA. On the other hand, it discusses how the evolution of the requirements, and in particular business goals, influenced the progress towards highly dynamic self-adaptive systems. Finally, based on a discussion of the current state of the art, this article points out the possible future evolution of the field

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“…Although our approach [19]-different from other uses of online testing (cf. [23,6,3,1])-has shown how to employ online testing for triggering pro-active adaptation, it has only focused on stateless services and violations of quality contracts (such as performance). Thus, those techniques, are not yet capable of addressing the challenges introduced by predicting whether conversational services will violate their functional contracts in the context of an SBA.…”

Section: Contributions Of the Papermentioning

confidence: 99%

“…The testing method rests on certain assumptions and conditions which will be explained and discussed in Sect. 6.…”

Section: Test Case Generationmentioning

confidence: 99%

Enabling Proactive Adaptation through Just-in-Time Testing of Conversational Services

Dranidis

Metzger

Kourtesis

2010

Towards a Service-Based Internet

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Abstract. Service-based applications (SBAs) will increasingly be composed of third-party services available over the Internet. Reacting to failures of those third-party services by dynamically adapting the SBAs will become a key enabler for ensuring reliability. Determining when to adapt an SBA is especially challenging in the presence of conversational (aka. stateful) services. A conversational service might fail in the middle of an invocation sequence, in which case adapting the SBA might be costly; e.g., due to the necessary state transfer to an alternative service. In this paper we propose just-in-time testing of conversational services as a novel approach to detect potential problems and to proactively trigger adaptations, thereby preventing costly compensation activities. The approach is based on a framework for online testing and a formal test-generation method which guarantees functional correctness for conversational services. The applicability of the approach is discussed with respect to its underlying assumptions and its performance. The benefits of the approach are demonstrated using a realistic example.

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A TTCN-3 based online test and validation platform for Internet services

Abstract: 1 Validation as opposed to verification means to check user requirements of systems and services with sampling techniques such as testing and not with mathematical proofs.

Cited by 21 publications

References 6 publications

Towards a TTCN-3 Test System for Runtime Testing of Adaptable and Distributed Systems

Towards a TTCN-3 Test System for Runtime Testing of Adaptable and Distributed Systems

A journey to highly dynamic, self-adaptive service-based applications

Enabling Proactive Adaptation through Just-in-Time Testing of Conversational Services

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