How do I find all the unit tests that may directly or indirectly call a given method? (.net)

Question

How do I find all the unit tests that may directly or indirectly call a given method? When I change a method, I wish to know the best tests to run; there must be a tool for this!

As we have lots of interfaces, I am interested in all unit tests that calls a method on an interface when there is at least one path var the implantation method on a class that implements the interface.

Or in other words, I want a list of all unit tests when the tool cannot prove the result is not affected by the method I have changed.

(We are using nUnit on .net and have lots of slow unit tests, it will be many year until we have refactored all our unit tests to be fast)

see also:

• How to find Junit tests that are using a given Java method directly or indirectly