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On the relation between unit testing and code quality

Conference paper
Authors Lucas Gren
Vard Antinyan
Published in Proceedings - 43rd Euromicro Conference on Software Engineering and Advanced Applications, SEAA 2017. 30 Aug.-1 Sept. 2017, Vienna, Austria
ISBN 978-1-5386-2141-7
Publisher IEEE
Publication year 2017
Published at Department of Computer Science and Engineering (GU)
Language en
Links https://doi.org/10.1109/SEAA.2017.3...
Keywords Code quality, Perceived quality, Unit tests coverage, Value
Subject categories Software Engineering

Abstract

Unit testing has been considered as having a key role in building high quality software, and therefore it has been widely used in practice. However, data on the relationship between unit testing and aspects of software quality remain scarce. A survey study with 235 survey responses from seven organizations was conducted in order to understand the correlation between practitioners' perception of code quality and unit testing practices. In addition, we conducted a case study in one of these organizations to investigate the correlation between unit test coverage and post-unit test defects. In both cases none or weak correlations were found. We recommend further research on the effectiveness of different testing practices in order to help practitioners to understand how to best allocate their resources to the testing chain.

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