Python Testing with pytest

Sharing Fixtures through conftest.py

You can put fixtures into individual test files, but to share fixtures among multiple test files, you need to use a conftest.py file either in the same directory as the test file that’s using it or in some parent directory. The conftest.py file is also optional. It is considered by pytest as a “local plugin” and can contain hook functions and fixtures.

Let’s start by moving the cards_db fixture out of test_count.py and into a conftest.py file in the same directory:

ch3/a/conftest.py

from pathlib import Path
from tempfile import TemporaryDirectory
import cards
import pytest


@pytest.fixture(scope="session")
def cards_db():
    """CardsDB object connected to a temporary database""" ...