conftest
Domain: Testing Quality
🎯 Motivation
conftest.py is a special pytest file that holds shared fixtures and hooks available to all tests in its directory and below. It centralizes test setup so you do not repeat the same fixtures in every file.
📋 Concrete Example
You put a @pytest.fixture def db_connection() in conftest.py, and every test file in that folder can use db_connection as a parameter without importing it.
🔗 Analogy
conftest.py is like a shared whiteboard in a classroom. Any student (test) in the room can read the formulas written there without carrying their own copy.