Conftest example

gistfile1.py

#conftest.py
from project import Session
from project.model import Model

import pytest

@pytest.fixture
def model():
    model = Model(value='some_value')
    Session.add(model)
    Session.commit()
    
    return model

# test_model.py
def test_model(model)
    assert model.value == 'some_value'