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Publications

Publications by João Pascoal Faria

2017

Conformance Checking in Integration Testing of Time-constrained Distributed Systems based on UML Sequence Diagrams

Authors
Lima, B; Faria, JP;

Publication
ICSOFT

Abstract
The provisioning of a growing number of services depends on the proper interoperation of multiple products, forming a new distributed system, often subject to timing requirements. To ensure the interoperability and timely behavior of this new distributed system, it is important to conduct integration tests that verify the interactions with the environment and between the system components. Integration test scenarios for that purpose may be conveniently specified by means of UML sequence diagrams (SDs) enriched with time constraints. The automation of such integration tests requires that test components are also distributed, with a local tester deployed close to each system component, coordinated by a central tester. The distributed observation of execution events, combined with the impossibility to ensure clock synchronization in a distributed system, poses special challenges for checking the conformance of the observed execution traces against the specification, possibly yielding inconclusive verdicts. Hence, in this paper we investigate decision procedures and criteria to check the conformance of observed execution traces against a specification set by a UML SD enriched with time constraints. The procedures and criteria are specified in a formal language that allows executing and validating the specification. Examples are presented to illustrate the approach.

2014

Foreword of the 5th Portuguese Software Engineering Doctoral Symposium (SEDES'2014)

Authors
Abreu, R; Faria, JP;

Publication
QUATIC

Abstract

2014

Introduction to Special Issue: Quality in Information and Communications Technology

Authors
Machado, RJ; Goulão, M; Abreu, FBe; Faria, JP;

Publication
Innov. Syst. Softw. Eng.

Abstract

2018

Automatic Model Transformation from UML Sequence Diagrams to Coloured Petri Nets

Authors
Custódio Soares, JA; Lima, B; Faria, JP;

Publication
MODELSWARD

Abstract
UML Sequence Diagrams are used in different domains for specifying the required behaviour of software-based systems. However, the created diagrams are often used only as documentation, and not as a basis for generating subsequent lifecycle artifacts or for automated analysis. Several authors have proposed the transformation of Sequence Diagrams to executable Coloured Petri Nets (CPN), for simulation and testing purposes, but the transformations are not automated or are implemented in an ad-hoc way. To overcome those limitations, we present in this paper an approach to automatically translate Sequence Diagrams to CPN ready for execution with CPN Tools, taking advantage of model-to-model transformation techniques provided by the Eclipse Modelling Framework (EMF). The transformation rules are implemented in the Epsilon Transformation Language. We use the standard UML metamodel provided by EMF and the CPN metamodel provided by CPN Tools, so any Sequence Diagram created with an EMF compliant modelling tool can be transformed. An application example is presented to better illustrate the approach.

2018

End-to-end Automatic Business Process Validation

Authors
Paiva, ACR; Flores, NH; Faria, JP; Marques, JMG;

Publication
ANT/SEIT

Abstract
Business Process Testing is the act of validating that end-to-end transactions through enterprise systems continue to work correctly as the underlying packaged applications evolve. End-to-end automatic business process validation can be a challenging task, but an important way to check that business rules continue to work properly and that problems are detected and corrected as soon as possible. This paper presents the design of a test automation platform, ETAP-Pro, to test end-to-end business processes that aims to overcome some challenges in validating business processes.

2018

Towards Real-Time Patient Prioritization in Hospital Emergency Services

Authors
Lima, B; Faria, JP;

Publication
HealthCom

Abstract

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