pytest-best-practices

pytest async-first testing best practices — test layer structure (unit/integration/e2e), fixture design with proper scope, async testing with pytest-asyncio (asyncio_mode=auto), test data with factory_boy + faker, HTTP mocking with respx, time mocking with freezegun, property-based with hypothesis, DB transaction-rollback isolation, flush() pattern for chained DB fixtures, pytest-xdist parallelism