Thomas Vogel

@tomvog

A Comprehensive Empirical Evaluation of Generating Test Suites for Mobile Applications with Diversity

Reference

Thomas Vogel, Chinh Tran, and Lars Grunske. “A Comprehensive Empirical Evaluation of Generating Test Suites for Mobile Applications with Diversity”. In: Information and Software Technology (2020). DOI: 10.1016/j.infsof.2020.106436. (in print, available online).

Abstract

Context: In search-based software engineering we often use popular heuristics with default configurations, which typically lead to suboptimal results, or we perform experiments to identify configurations on a trial-and-error basis, which may lead to better results for a specific problem. We consider the problem of generating test suites for mobile applications (apps) and rely on Sapienz, a state-of-the-art approach to this problem that uses a popular heuristic (NSGA-II) with a default configuration. Objective: We want to achieve better results in generating test suites with Sapienz while avoiding trial-and-error experiments to identify a more suitable configuration of Sapienz. Method: We conducted a fitness landscape analysis of Sapienz to analytically understand the search problem, which allowed us to make informed decisions about the heuristic and configuration of Sapienz when developing Sapienzdiv. We comprehensively evaluated Sapienzdiv in a head-to-head comparison with Sapienz on 34 apps. Results: Analyzing the fitness landscape of Sapienz, we observed a lack of diversity of the evolved test suites and a stagnation of the search after 25 generations. Sapienzdiv realizes mechanisms that preserve the diversity of the test suites being evolved. The evaluation showed that Sapienzdiv achieves better or at least similar test results than Sapienz concerning coverage and the number of revealed faults. However, Sapienzdiv typically produces longer test sequences and requires more execution time than Sapienz. Conclusions: The understanding of the search problem obtained by the fitness landscape analysis helped us to find a more suitable configuration of Sapienz without trial-and-error experiments. By promoting diversity of test suites during the search, improved or at least similar test results in terms of faults and coverage can be achieved.

BibTeX

@article{2020-IST,
  author = {Vogel, Thomas and Tran, Chinh and Grunske, Lars},
  title = {A Comprehensive Empirical Evaluation of Generating Test Suites for Mobile Applications with Diversity},
  journal = {Information and Software Technology},
  volume = {},
  number = {},
  year = {2020},
  pages = {},
  doi = {10.1016/j.infsof.2020.106436},
  publisher = {Elsevier},
  note = {(In print. Available online 25 September 2020)},
}
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