---
title: "Testing Complex Logic with TDD"
url: "https://osherove.com/videos/2009/8/25/testing-complex-logic-with-tdd.md"
canonical: "https://osherove.com/videos/2009/8/25/testing-complex-logic-with-tdd.html"
published: "2009-08-24T22:25:46"
updated: "2009-08-24T22:25:46"
tags: ["Howto", "Unit Testing"]
author: "Roy Osherove"
description: "I did this video a looong while ago. still, I think it has value. BTW - if this interests you, you might REALLY like my full online TDD course . Play video Testing Complex Logic with TDD"
usage: "Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page)."
license: "https://creativecommons.org/licenses/by/4.0/"
---

# Testing Complex Logic with TDD

By Roy Osherove August 24, 2009 In [Howto](https://osherove.com/videos/category/howto), [Unit Testing](https://osherove.com/videos/category/unit-testing)

**Historical article** · Originally published August 24, 2009; technical details may be outdated.

I did this video a looong while ago. still, I think it has value.

BTW - if this interests you, you might REALLY like my [full online TDD course](http://www.udemy.com/tdd-in-net-with-roy-osherove/).

[![](https://osherove.com/img/video/yt-PP8UDXt268M.jpg)Play videoTesting Complex Logic with TDD](https://www.youtube.com/watch?v=PP8UDXt268M)

## More in Howto

[All posts in Howto](https://osherove.com/videos/category/howto)

- Dec 7, 2010

    ### [Be a legacy code unit test ninja with Typemock Isolator](https://osherove.com/videos/2010/12/7/be-a-legacy-code-unit-test-ninja-with-typemock-isolator.html)

- Jun 1, 2010

    ### [Continuous Integration with and without team system 2008](https://osherove.com/videos/2010/6/1/continuous-integration-with-and-without-team-system-2008.html)


---

## About the author

**Roy Osherove**: Senior Solutions Architect at AWS working on AI for production and AI-driven development; author of The Art of Unit Testing and Elastic Leadership, with about 20 years of consulting and training on unit testing, TDD, team leadership and continuous delivery.

### Sites

- [RobotPaper](https://robotpaper.ai/): This blog: AI patterns and anti-patterns, AI and coding agents, and engineering leadership.
- [osherove.com](https://osherove.com): Roy's personal site. Author of The Art of Unit Testing and Elastic Leadership; consulting and training on unit testing, TDD, team leadership and continuous delivery, plus about 20 years of blog posts.
- [The Art of Unit Testing](https://www.artofunittesting.com): The Art of Unit Testing, 3rd Edition (Manning): readable, maintainable, trustworthy unit tests, plus TDD workshops in C#, JavaScript, Java and Kotlin.
- [5whys.com](https://www.5whys.com): Roy's writing on software team leadership: self-organizing teams, surviving chaos, learning mode and the Elastic Leadership model.
- [Pipeline Driven](https://pipelinedriven.org): Continuous delivery and DevOps practices: build patterns, pipeline-friendly testing, DevOps metrics and enterprise DevOps.
- [Elastic Leadership](https://www.elasticleadership.com): Elastic Leadership, Roy's framework for software team leaders (survival, learning and self-organizing modes).

### Social

- X: https://x.com/royosherove
- LinkedIn: https://www.linkedin.com/in/osherove/

### Contact

- Contact form: https://forms.gle/jQSx5KoXvrVA1JCK7

### License

Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page). License: https://creativecommons.org/licenses/by/4.0/