With MS ramming powershell into all new server products, I&#39;m starting to (reluctantly) think I need to take it seriously. Part of &quot;taking it seriously&quot; is TDD. Have you found good methods to unit test power shell scripts? 

I&#39;ve found samples of mocking from [Mr Geek Noise][1] - but I&#39;d really like something like [RhinoMocks][2]. [Brian Hartsock][3] has a sample of running tests on powershell strings from MS Test. A little hacky, but it seems to work. 

What I want is a Powershell TDD experience that is as clean as it is in &quot;real&quot; languages. 


----------

**Update to clarify:**
 
The first two answers attempt to steer me away from testing Powershell. The opinions are interesting. I don&#39;t want to know if it&#39;s a good idea to test in powershell. That&#39;s a subjective question that should be asked in a different forum. I want a solution to unit testing powershell. If you think it&#39;s a bad idea (it might be), treat it as a fun academic question.

 - Yes, scripting languages glue together disparate systems. However, as already pointed out, it&#39;s also easy to mock and break seams in a dynamic language. 
 - I&#39;m not asking about &quot;debugging&quot;. Debugging is an extremely useful topic. I&#39;ll let someone else ask it. 
 - Maybe PS scripts should be simple. The language supports modularity and it is inevitable that complex processes will be implemented in PS (even if a bad idea). 
 - The answer to this question is not &quot;You can&#39;t&quot;. I can see (from linked blogs - which are a little old) that some people have made headway on the problem.  

To re-state: **How do you implement an automated testing of Powershell logic in the style of xUnit?**  Integration tests are interesting, unit tests that break dependencies most interesting. 

  [1]: http://www.peterprovost.org/blog/post/TDD-with-PowerShell-Mocking-Things.aspx
  [2]: http://ayende.com/projects/rhino-mocks.aspx
  [3]: http://blog.brianhartsock.com/2009/03/27/tdd-with-powershell-from-the-client-perspective/

All Pester Solutions on Gang of Coders

Total of 1 Pester Solutions

How to do TDD and unit testing in powershell?