Source-Code Level Regression Test Selection: the Model-Driven Way

By: Thibault Béziers la Fosse, Jean-Marie Mottu, Massimo Tisi, Sunyé Sunyé

Abstract

In order to ensure that existing functionalities have not been impacted by recent program changes, test cases are regularly executed during regression testing (RT) phases. The RT time becomes problematic as the number of test cases is growing. Regression test selection (RTS) aims at running only the test cases that have been impacted by recent changes. RTS reduces the duration of regression testing and hence its cost. In this paper, we present a model-driven approach for RTS. Execution traces are gathered at runtime, and injected in a static source-code model. We use this resulting model to identify and select all the test cases that have been impacted by changes between two revisions of the program. Our MDE approach allows modularity in the granularity of changes considered. In addition, it offers better reusability than existing RTS techniques: the trace model is persistent and standardised. Furthermore, it enables more interoperability with other model-driven tools, enabling further analysis at different levels of abstraction (e.g., energy consumption). We evaluate our approach by applying it to four well-known open- source projects. Results show that our MDE proposal can effectively re- duce the execution time of RT, by up to 32% in our case studies. The overhead induced by the model building makes our approach slower than dedicated RTS tools, but the reuse of trace models for further analysis compensates for the time.

Keywords

Regression Test Selection, Regression Testing, Model Driven Engineering, Execution Trace

Cite as:

Thibault Béziers la Fosse, Jean-Marie Mottu, Massimo Tisi, Sunyé Sunyé, “Source-Code Level Regression Test Selection: the Model-Driven Way”, Journal of Object Technology, Volume 18, no. 2 (July 2019), pp. 13:1-20, doi:10.5381/jot.2019.18.2.a13.

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The JOT Journal   |   ISSN 1660-1769   |   DOI 10.5381/jot   |   AITO   |   Open Access   |    Contact