We know that Python provides a  lot of productivity over any compiled languages. We have programming in C# & need to write the unit test cases in C# itself. If we see the amount of code we write for unit test is approximately ten times more than the original code. 
Is it ideal choice to write unit test cases in IronPython instead of C#? Any body has done like that? I wrote few test cases, they seems to be good. But hairy pointy managers won't accept.
I gotta go with Will and Jon..
I would prefer my tests be in the same language as the code I'm testing; it causes fewer cognitive context switches.  But maybe I'm just not as mentally agile as I once was.

Jon
IronPython For Unit Testing over C#