How to conduct performance test on custom Excel add-in and automation functions

According to MSDN, http://msdn.microsoft.com/en-us/library/dd293540.aspx, Visual Studio Professional is not supported in terms of performance and stress testing. I am hoping some one here can suggest a fe开发者_如何学Cw free testing tools to me.

Also, I am wondering, what would be the best way to test custom Excel add-in and automation functions? Is there any way that I can automate the testing process for Excel add-in and automation functions?

Thanks

What server and interface does your excel add-in use to communicate to the next upstream architectural component? It is this interface which will dictate what tools can be used to replicate the add-in conversation for performance and stress-testing purposes. If you are lucky then you may have an interface that is also covered by some open source tools.