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Outside-In TDD part 3

Oustide-In TDD (part III)

Different from the previous screencasts, this one is not meant for TDD beginners. Inspired by recent discussions on Twitter and a public discussion about TDD and Software Design (see video below), Sandro Mancuso decided to record a video showing how he normally codes, which is different from how he normally teaches.

In this 3-part screencast you will be able to follow Sandro's "just in time" design approach and understand the rationale behind some of his recent comments. You will notice that he not always follow rules and how he relies more on his intuition to drive his design. Thinking out loud throughout the video, it becomes quite easy to understand everything that he is considering while writing each test and refactoring his code. This video provides a very good example of Outside-In TDD and how it differs from the Classicist approach.

If you are TDD novice, don't follow the advice from these videos blindly. Favour the classicist approach, design less up-front, and get feedback from your code before evolving your design.

For more about the differences between TDD styles, please check Sandro's blog post Does TDD really lead to good design?

About the author

Software craftsman, author, and founder of the London Software Craftsmanship Community (LSCC). Sandro has been coding since a very young age but only started his professional career in 1996. He has worked for startups, software houses, product companies, international consultancy companies, and investment banks.

During his career Sandro had the opportunity to work in a good variety of projects, with different languages, technologies, and across many different industries. Sandro has a lot of experience in bringing the Software Craftsmanship ideology and Extreme Programming practices to organisations of all sizes. Sandro is internationally renowned by his work on evolving and spreading Software Craftsmanship and is frequently invited to speak in many conferences around the world. His professional aspiration is to raise the bar of the software industry by helping developers become better at and care more about their craft.

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