Andre Hora

Minor improvement to test `test_match` in test_brew_unknown_command.py. Specifically, this PR is testing the input already there provided by the fixture `brew_unknown_cmd2`.

Hello @bjascob, I have just created some tests to class `LexicalUtils`, which is untested and misses some simple but important inputs. Congrats for the great project!

Fixing the message of the second test: from: "The addToCart function can add an item to the cart" to: "The removeFromCart function can remove an item from the cart"