fastapi-pytest-tddhelper

Features and purpose

Senior Backend Architect and Principal QA Engineer skill for Test-Driven Development (TDD) with FastAPI and Pytest. Provides high-performance testing blueprints prioritizing execution speed and memory efficiency. Use when: (1) Setting up pytest for FastAPI projects, (2) Writing tests following Red-Green-Refactor TDD cycle, (3) Creating high-performance conftest.py with async fixtures, (4) Implementing transaction rollback patterns for fast test isolation, (5) Using httpx.AsyncClient for async endpoint testing, (6) Validating responses with Pydantic models, (7) Creating factory fixtures and dependency overrides, (8) Optimizing test execution speed and parallelization. Applies to FastAPI v0.100+ and Pytest v8.0+.

Quick start

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