erija952/blackjack — comment on commit 265481ec9efb5a4b6ea128779ecf57ba2e0f9706
File: test/deck_tests.erl line 47
By daha:

it is generally (not just in tests) good to match on the return value to make sure it is started properly (to avoid hiding problems),
{ok, _Pid} = deck:start().

The same goes for the stop method.