Easy unit testing for node.js and the browser.

 Simple syntax, powerful tools. Nodeunit provides easy async unit testing for
 node.js and the browser.
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  * Simple to use
  * Just export the tests from a module
  * Works with node.js and in the browser
  * Helps you avoid common pitfalls when testing asynchronous code
  * Easy to add test cases with setUp and tearDown functions if you wish
  * Flexible reporters for custom output, built-in support for HTML & jUnit XML
  * Allows the use of mocks and stubs
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 Node.js is an event-based server-side JavaScript engine.