PT025

pytest.mark.usefixtures has no effect on fixtures

Examples

Bad code:

import pytest

@pytest.fixture()
def a():
  pass

@pytest.mark.usefixtures('a')
@pytest.fixture()
def b():
  pass

Good code:

import pytest

@pytest.fixture()
def a():
  pass

@pytest.fixture()
def b(a):
  pass

according to the pytest docs on pytest.mark.usefixtures:

Also note that this mark has no effect when applied to fixtures.
pytest does not raise any error or warning when fixtures are decorated with pytest.mark.usefixtures, which can lead to incorrect results and broken tests