---
title: "Be a legacy code unit test ninja with Typemock Isolator"
url: "https://osherove.com/videos/2010/12/7/be-a-legacy-code-unit-test-ninja-with-typemock-isolator.md"
canonical: "https://osherove.com/videos/2010/12/7/be-a-legacy-code-unit-test-ninja-with-typemock-isolator.html"
published: "2010-12-07T18:06:04"
updated: "2010-12-07T18:06:04"
tags: ["Howto"]
author: "Roy Osherove"
description: "Embedded Flash media from the original post is no longer playable."
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/"
---

# Be a legacy code unit test ninja with Typemock Isolator

By Roy Osherove December 7, 2010 In [Howto](https://osherove.com/videos/category/howto)

**Historical article** · Originally published December 7, 2010; technical details may be outdated.

Embedded Flash media from the original post is no longer playable.

## More in Howto

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

- 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)

- Aug 24, 2009

    ### [Testing Complex Logic with TDD](https://osherove.com/videos/2009/8/25/testing-complex-logic-with-tdd.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/