Adrienne Testa chatted happily with her family on Thursday outside the Arie Crown Theater where she would officially be sworn in as an Illinois attorney.“It feels like the ultimate exhale,” said Testa, a Loyola University Chicago School of Law graduate originally from Darien. “In a lot of ways, this is just like the end of a chapter that meant so much for so many different reasons, law degree included, but also a lot of personal relationships came out of it, too.”Testa, 27, is one of about 500 …