If you're going to write an insanely fast, headless test tool, how can you not call it Zombie? Zombie it is.
You don't have to, but I really recommend running Zombie.js with Vows , an outstanding BDD test framework for Node.js.
See the documentation for Sizzle.js: https://github.com/jeresig/sizzle/wiki
Fork the project. Add tests. Make your changes. Send me a pull request.
Zombie.js is copyright of Assaf Arkin, released under the MIT License.
Sizzle.js is copyright of John Resig, released under the MIT, BSD and GPL.