I used BFGMiner which works through the Mac's terminal. The system was using both the central processor and the video card generating about 16 MHs/s. It's a 2014 MacBook Pro, very decent machine for video editing and the likes but it proved to be totally surpassed by the task. The pool I used was AntPool.
I did it just as an experiment, I'm not that stupid. I know even with an Antminer S9 you'll struggle to earn real amounts. Anyways, I thought I'd share this if anyone is curious. BTW I know there are calculators out there but I wanted to do a real life test.
And sooo after 33 hours of mining at full performance of a MacBook Pro I earned... 0.00000001 BTC.
Yes, that means that after 3 years running straight uninterrupted like this I would have USD$0.02 in BTC (at present value).