Deletion of Given-When-Then

Comment: commonly used design pattern|pattern in agile development and particularly behaviour driven development.  Admittedly the two references in the article at present are not the best in the world, but  clearly does not apply as there are clearly independent reliable sources about the concept.  Better references would be http://martinfowler.com/bliki/GivenWhenThen.html, {{cite book|title=Android Application Testing Guide|author=Diego Torres Milano|publisher=Packt Publishing|date=June 2011|isbn=9781849513500}} (the entirety of chapter 6 is devoted to this concept), or http://lizkeogh.com/2009/04/16/given-when-then-granularity
Stance: keep
Cited policy: Wikipedia:Wikipedia is not a dictionary (WP:NEO)