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Assessing test-driven development at IBM

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2 Author(s)
Maximilien, E.M. ; IBM Corp., Raleigh, NC, USA ; Williams, L.

In a software development group of IBM Retail Store Solutions, we built a non-trivial software system based on a stable standard specification using a disciplined, rigorous unit testing and build approach based on the test-driven development (TDD) practice. Using this practice, we reduced our defect rate by about 50 percent compared to a similar system that was built using an ad-hoc unit testing approach. The project completed on time with minimal development productivity impact. Additionally, the suite of automated unit test cases created via TDD is a reusable and extendable asset that will continue to improve quality over the lifetime of the software system. The test suite will be the basis for quality checks and will serve as a quality contract between all members of the team.

Published in:

Software Engineering, 2003. Proceedings. 25th International Conference on

Date of Conference:

3-10 May 2003