MicrosoftVisualStudio2008 Testingtools namespace vs Nunit Framework

Hi to all,



Can any one please tell me the strong differences between the MicrosoftVisualStudio2008 Testingtools namespace and Nunit Framework.


And one more thing is In Nunit GUI we have an option called "SaveResult as XML" in tools tab,
like this is there any future in VS 2008.


Thanx to alllllllllll ...