I'm currently a QA Lead and responsible for reporting testing metrics, I'v been testing software for 8 years now and have ample experience in reporting metrics however Ive been asked to report on a project which has very little requirements.

Currently I plan to report based on the requirements I have, however there is a known, unknown batch of functionality which i know has not been tested, however I'll be reporting that we have 100% requirements coverage (which is effectively is true but gives a false sense of confidence!)

I suppose the question is, how do I report on the section of the application which does not have any requirements?

Any advice will be great!