Programmatically detecting code coverage and xdebug?

Hello, I have a few tests that just assert that one method of doing things is faster than another. I did this because PHP changes so much I want to know if they optimized something, or made something slower. On my machine all the tests work fine, but we have a tool that pulls our svn and runs the tests itself (so that all unit tests get run with each commit.) But it also runs code coverage, and has xdebug running to help us determine what happened if something broke. Needless to say, this skews benchmark tests. Is there a way to detect either of those things so that I can simply skip the test on the automated server?