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route-tester

Write pytest-asyncio tests for FastAPI endpoints using AsyncClient and fixtures.

2|Updated Nov 21, 2025
Search Tags:#authentication#pytest#FastAPI#fixtures#endpoint-testing#pytest-asyncio#AsyncClient
One-click install
npx skills add https://github.com/kobikis/claude-code-python-showcase --skill route-tester-kobikis
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: route-tester
Source: https://github.com/kobikis/claude-code-python-showcase/tree/main/.claude/skills/route-tester
Command: npx skills add https://github.com/kobikis/claude-code-python-showcase --skill route-tester-kobikis

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Testing FastAPI routes can be error-prone without consistent patterns for async tests, fixtures, and authentication. This skill codifies proven testing patterns to ensure reliable, fast, and maintainable tests.

Core Features & Use Cases

  • Structured test organization (unit and integration tests for FastAPI routes)
  • Async testing with httpx.AsyncClient and pytest-asyncio
  • Fixtures for database sessions, clients, and authentication
  • Mocking external services and validating authorization flows
  • Use Case: End-to-end tests for a /items endpoint with auth and DB

Quick Start

Use the route-tester skill to scaffold tests for a sample FastAPI route and run pytest to execute them.

Frequently Asked Questions about route-tester

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test FastAPI endpoints with pytest and AsyncClient?▼

FastAPI endpoint testing uses pytest-asyncio and httpx.AsyncClient to execute asynchronous HTTP requests. Tests are structured using fixtures to manage database sessions and client instances, ensuring reliable and maintainable async test execution.

What's the best way to structure FastAPI tests with fixtures?▼

Structuring FastAPI tests involves using pytest fixtures to provide database sessions, async clients, and authentication states. This pattern separates test setup from execution, supporting both unit and integration tests for routes.

How does pytest-asyncio handle authentication flows in FastAPI testing?▼

Authentication flows in FastAPI testing are validated by mocking external services and using fixtures to simulate authorized clients. This approach tests authorization logic without requiring real external service dependencies.

Can I use fixtures to mock database interactions in FastAPI endpoint tests?▼

Fixtures are used to mock database interactions by injecting isolated database sessions into FastAPI endpoint tests. This ensures tests remain fast and independent by controlling the database state during async test execution.

Does this approach support parameterization for FastAPI route testing?▼

Parameterization is supported for FastAPI route testing to validate multiple input scenarios efficiently. Combined with pytest-asyncio, it allows running varied test cases against endpoints using the same fixture setup.

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