The Value of Testing in Open Source
Think of a time when multiple contributors were all working in the same area of code at once. Ever wish there was an easy way to resolve those inevitable merge conflicts? This certainly happened for us while contributing to the pgAdmin 4 open source project. As evangelists from Pivotal, Matt Kleiman and team contributed all of their patches to pgAdmin 4 using test-driven development. Attend his talk to learn the virtues of testing and the story of trying to bring test-driven development to an existing open source community. He will walk through an example of how Pivotal extracted existing, untested code and wrapped them in tests in order to benefit the entire community.
Outline/Structure of the Lightning Talk
At Pivotal Labs, we practice Extreme Programming as our default engineering practices. So when we started contributing to pgAdmin 4, we naturally continued pair programming and test driven development in our everyday development. We quickly realized the challenges that face any new contributors to an open source project. Much of the existing code was untested and therefore we had no inherent way to know when we were breaking things. We had to rely upon the community to tell us when our patches had introduced regressions, a painfully slow feedback loop.
I will briefly tell the story of the pain points of working on open source software that is untested. Then I will walk through a small example of how we took untested code, wrapped it in tests, then deleted it in order to do test driven development on the legacy codebase. I'll conclude with the reasons why we use the practice of test driven development for effective agile software development within the open source community.
Attendees will come away from the talk with a better understanding of how test driven development (TDD) works at both a high level and with a simple, concrete example. They will learn about how TDD improves code quality and actually speeds up development time on a project.
Software engineers and all people interested in improving the quality of software delivery teams.
Prerequisites for Attendees
schedule Submitted 11 months ago
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