Using TDD for developing object-oriented software — A case study

Maintenance of software is accomplished to meet the users´ needs of this software (evolution/correction). But, it can become hardest if the source code architecture is difficult to understand. Test Driven Development technique can be used to reduce this difficulty, because it leads the developer to build software with source code simpler. In this paper, this technique is employed to develop software whose functionality is the same of legacy software, but it was developed of way traditional, to obtain more maintainable source code. Software metrics were applied in the source code of legacy and developed software and the results showed improvements in maintainability.