how to use a session-scoped fixture explicitely for a test?

[flixman]

I have a fixture that creates a test database, and that is session-scoped. For one of the tests, I want to call that fixture again with an argument set to false. I can extract the contents of the fixture into another method (so that the fixture becomes just a wrapper around that method), but I am wondering if there is any way to do this with the existing fixture. In short, what I want to do is something like:

@pytest.fixture(scope='session')
def db_init(upgrade=False):
   if upgrade:
      upgrade()
  else:
     db.create_all()

class TestInitApp:
    @pytest.mark.parametrize("db_init", [True], indirect=["db_init"])
    def test_file_exists(self, app, db_init):
        # do the test

But I do not get this to work. What am I doing wrong?