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Visualizing test diversity to support test optimisation

Paper i proceeding
Författare Francisco Gomes de Oliveira Neto
Robert Feldt
Linda Erlenhov
José Benardi de Sousa Nunes
Publicerad i Proceedings of the 24th Asia-Pacific Software Engineering Conference
Publiceringsår 2018
Publicerad vid Institutionen för data- och informationsteknik, Software Engineering (GU)
Språk en
Länkar https://arxiv.org/abs/1807.05593
Ämnesord Software Testing, Diversity, Search-based Software Testing, Empirical Study
Ämneskategorier Programvaruteknik

Sammanfattning

Diversity has been used as an effective criteria to optimise test suites for cost-effective testing. Particularly, diversity-based (alternatively referred to as similarity-based) techniques have the benefit of being generic and applicable across different Systems Under Test (SUT), and have been used to automatically select or prioritise large sets of test cases. However, it is a challenge to feedback diversity information to developers and testers since results are typically many-dimensional. Furthermore, the generality of diversity-based approaches makes it harder to choose when and where to apply them. In this paper we address these challenges by investigating: i) what are the trade-off in using different sources of diversity (e.g., diversity of test requirements or test scripts) to optimise large test suites, and ii) how visualisation of test diversity data can assist testers for test optimisation and improvement. We perform a case study on three industrial projects and present quantitative results on the fault detection capabilities and redundancy levels of different sets of test cases. Our key result is that test similarity maps, based on pair-wise diversity calculations, helped industrial practitioners identify issues with their test repositories and decide on actions to improve. We conclude that the visualisation of diversity information can assist testers in their maintenance and optimisation activities.

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