---
title: "[Interview] Jonathan de Halleux on mbUnit and model based testing"
url: "https://osherove.com/blog/2005/1/11/interview-jonathan-de-halleux-on-mbunit-and-model-based-test.md"
canonical: "https://osherove.com/blog/2005/1/11/interview-jonathan-de-halleux-on-mbunit-and-model-based-test.html"
published: "2005-01-11T01:12:00"
updated: "2005-01-11T01:12:00"
tags: [".Net 2.0", "Agile Related", "Interview"]
author: "Roy Osherove"
description: "You may have noticed that lately I've started to interview people I find interesting. Such was the case with Johanna Rothman, and now it's Peli's turn. All interviews will be hosted from now on on Team Agile's interview…"
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/"
---

# \[Interview\] Jonathan de Halleux on mbUnit and model based testing

By Roy Osherove January 11, 2005 In [.Net 2.0](https://osherove.com/blog/category/net-2-0), [Agile Related](https://osherove.com/blog/category/agile-related), [Interview](https://osherove.com/blog/category/interview)

**Historical article** · Originally published January 11, 2005; technical details may be outdated.

You may have noticed that lately I've started to interview people I find interesting. Such was the case with Johanna Rothman, and now it's Peli's turn. All interviews will be hosted from now on on [Team Agile's interview page](http://www.teamagile.com/mainpages/Interviews.html).

[Download the interview from here](http://www.teamagile.com/mainpages/Interviews.html)

**Summary**

_Jonathan(a.k.a. "Peli") is best known for his work on_ [**_mbUnit_**](http://www.mbunit.org/) _-an alternative unit testing framework for .Net development. He just recently joined Microsoft in Redmond to work there as a tester on the CLR JIT team._ [**_His weblog_**](http://blog.dotnetwiki.org/) _is filled with interesting news about testing techniques, and also a great source to learn about various Addins he is developing for the well-known Reflector tool. During the interview, Jonathan talks about a variety of topics, including Model Driven Testing, Object relational mappers, code generation and also about other things he's created such as_ [**_ReFly_**](http://www.testdriven.net/wiki/default.aspx/MyWiki.DownLoad) _and_ [**_TestFoo_**](http://blog.dotnetwiki.org/category/25.aspx)_. We also discuss new favorite features in .Net 2.0 and Pair Programming experiences with_ [**_Jamie Cansdale_**](http://weblogs.asp.net/nunitaddin)_, maker of_ [**_TestDriven.Net_**](http://www.testdriven.net/)_._

## More in .Net 2.0

[All posts in .Net 2.0](https://osherove.com/blog/category/net-2-0)

- Apr 9, 2005

    ### [Whitepaper: Introducing System Transactions, by Juval Lowy](https://osherove.com/blog/2005/4/9/whitepaper-introducing-system-transactions-by-juval-lowy.html)

- Jan 18, 2005

    ### [Data Binding with .Net 2.0 : upcoming coolness](https://osherove.com/blog/2005/1/18/data-binding-with-net-20-upcoming-coolness.html)

- Jan 8, 2005

    ### [Making ClickOnce publishing work in VS.Net 2005 Beta 1+](https://osherove.com/blog/2005/1/8/making-clickonce-publishing-work-in-vsnet-2005-beta-1.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).

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### 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/