Pytest fixture linting

bad.py

# This should not emit any complaints
import pytest

class App:
    def __init__(self, smtp):
        self.smtp = smtp

@pytest.fixture(scope="module")
def app(smtp):
    return App(smtp)

def test_smtp_exists(aap):  # Ooooops. TYPO!
    assert app.smtp # This will fail with horribly contrived error

good.py

# This should not emit any complaints
import pytest

class App:
    def __init__(self, smtp):
        self.smtp = smtp

@pytest.fixture(scope="module")
def app(smtp):
    return App(smtp)

def test_smtp_exists(app):
    assert app.smtp