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Published in:
2010 | OriginalPaper | Chapter
Exploring Empirically the Relationship between Lack of Cohesion and Testability in Object-Oriented Systems
Authors : Linda Badri, Mourad Badri, Fadel Toure
Published in: Advances in Software Engineering
Publisher: Springer Berlin Heidelberg
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The study presented in this paper aims at exploring empirically the relationship between lack of cohesion and testability of classes in object-oriented systems. We investigated testability from the perspective of unit testing. We designed and conducted an empirical study using two Java software systems for which JUnit test cases exist. To capture testability of classes, we used different metrics to measure some characteristics of the corresponding JUnit test cases. We used also some lack of cohesion metrics. In order to evaluate the capability of lack of cohesion metrics to predict testability, we performed statistical tests using correlation. The achieved results provide evidence that (lack of) cohesion may be associated with (low) testability.