Testing

Advanced Fixtures

function (default): Created for each test function
class: Shared across all tests in a class
module: Created once per test file
session: Created once for the entire test run

Scoped fixtures, conftest, and factory fixtures

Interview: Test architecture — mid to senior level

Fixtures Deep Dive

Fixtures are pytest's most powerful feature. They provide dependency injection for test setup, enabling clean, reusable test infrastructure.