I'm learning pytest and I lint my code with pylint.
But pylint still complaints about:
W0621: Redefining name %r from outer scope (line %s)
for the following example from pytest:
# 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
Redefining name my_wallet
from outer scope.
I found workaround to add _
prefix to the fixture name: _my_wallet
.
What would be the best practice if I want to keep fixtures in same file as functions?
_
?pylint
check for tests?The pytest docs for @pytest.fixture
say this:
If a fixture is used in the same module in which it is defined, the function name of the fixture will be shadowed by the function arg that requests the fixture; one way to resolve this is to name the decorated function
fixture_<fixturename>
and then use@pytest.fixture(name='<fixturename>')
.
So this solution is similar to your option 1, except that the pytest author suggests a slightly more descriptive name for the fixture function.
The description in the docs also hints at another solution which is to move the fixtures into conftest.py
so they are not in the same module as the test code using the fixtures. This location is also useful for sharing fixtures among test modules.