====== Python: pytest ======

기본 사용법((https://semaphoreci.com/community/tutorials/testing-python-applications-with-pytest))

<code python> 
# test_wallet.py

@pytest.fixture
def my_wallet():
    '''Returns a Wallet instance with a zero balance'''
    return Wallet()

@pytest.mark.parametrize("earned,spent,expected", [
    (30, 10, 20),
    (20, 2, 18),
])
def test_transactions(my_wallet, earned, spent, expected):
    my_wallet.add_cash(earned)
    my_wallet.spend_cash(spent)
    assert my_wallet.balance == expected
</code>    
    
**Python Test Runner**
  * https://github.com/facebookincubator/ptr