Some Placement Techniques of Test Components Inspired by Fog Computing Approaches

In this work we are interested in placing test components for Internet of Things (IoT) and Smart Cities. Our work is inspired by similar works aiming the placement of application components in Fog computational nodes. First we give an overview about the decision variables to consider. Then, we define several types of constraints that may be included in the placement problem. Moreover, We list a set of possible Objectives Functions to maximize or minimize. Finally, we propose some algorithms and techniques to solve the considered Test Component Placement Problem (TCPP) taken from the literature

A New Model-Based Framework for Testing Security of IOT Systems in Smart Cities Using Attack Trees and Price Timed Automata

International audienceIn this paper we propose a new model-based framework for testing security properties of Internet of Things in Smart Cities. In general a model-based approach consists in extracting test cases from a formal specification either of the system under test or the environment of the considered system in an automatic fashion. Our framework is mainly built on the use of two formalisms namely Attack Trees and Price Timed Automata. An attack tree allows to describe the strategy adopted by the malicious party which intends to violate the security of the considered IOT system. An attack tree is translated into a network of price timed automata. The product of the constructed price timed automata is then computed using the well known UPPAALL platform. The obtained timed automata product serves as input for the adopted test generation algorithm. Moreover our framework takes advantage of the use of the standardized specification and execution testing language TTCN-3. With this respect, the obtained abstract tests are translated into the TTCN-3 format. Finally we propose a cloud-oriented architecture in order to ensure test execution and to collect the generated verdicts

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

Part 3: Test Frameworks for Distributed SystemsInternational audienceToday, 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