dennisdoomen/fluentassertions — pull request #74 by vossad01 (2014-02-15 20:59:40+00:00)
Title: Adds `NotBeNullOrEmpty` and `BeNullOrEmpty` assertions for collections

Should resolve Issue #63. Personally, I would encourage taking a second look at the design if you find yourself needing these; but, I suppose that is besides the point of whether these functions should be provided.