def test_phone_numbers(): text = """Dear Mr. Davis, I got to know of your company through our mutual friend Fiona Williams and the training you offer to graduate students in Advertising. I am a graduate student of Mass Communications with specialization in Advertising. I am currently pursuing the last year of my course. I would very much like to see firsthand the work environment in an advertising agency. If you would like a reference, my advisor can be reached at (454) 999-1212. You can contact me at (919) 123-4569 at your convenience.""" assert x.phone_numbers(text) == ["(454) 999-1212", "(919) 123-4569"]