Avaliação da qualidade interna de softwares desenvolvidos com a técnica TDD

Abstract

Test Driven Development (TDD) is a software development technique that propose the implementation of the testing before functionality codification. In the literature we can observe that TDD leads to an improvement on product external quality, however, there is a lack of findings regarding its impact on product internal quality. Based on this, the goal of this study is to evaluate the influence of TDD on product internal quality. For this evaluation we propose the use of design metrics that verify product internal aspects, such as cohesion, coupling, and complexity. These metrics are used to measure and analyze products developed by using TDD and software products developed in a traditional way. With the results of the measurements we performed an empirical evaluation for the quality attributes values in different case studies. The results show that, in general, the TDD influences positively in the internal quality of softwares, however there were cases that the obtained results of softwares developed with in a traditional way were better than the ones developed with TDD.