api-test-suite-builder

What This Skill Does

The API Test Suite Builder is a powerful engineering companion designed to automate the traditionally tedious process of boilerplate test generation. By scanning your codebase—whether in Next.js, Express, FastAPI, or Django REST—this skill intelligently maps your routes and HTTP methods to create comprehensive, production-ready test suites. It focuses on critical areas like authentication flows, input schema validation, HTTP error code handling, pagination logic, and file upload robustness. By outputting ready-to-run code for Vitest+Supertest or Pytest+httpx, it transforms a manual effort of hours into a task that takes seconds, ensuring your API contracts remain intact as you scale.

Installation

To integrate this skill into your OpenClaw environment, execute the following command in your terminal: clawhub install openclaw/skills/skills/alirezarezvani/api-test-suite-builder

Use Cases

• Test-Driven Development (TDD): Generate a test scaffold for a new feature before writing the actual implementation to define the expected contract.
• Legacy Refactoring: Quickly audit and generate baseline coverage for undocumented legacy APIs to prevent regressions during code migrations.
• Security Hardening: Automatically generate adversarial payloads to test input validation and rate-limiting behaviors against potential injection attacks.
• Continuous Integration: Use the generated files as a permanent regression suite to catch breaking changes in every pull request.

Example Prompts

1. "Scan the ./src/routes folder in my Express project and generate a full Vitest suite covering 400, 401, and 422 error codes for all endpoints."
2. "Create a Pytest file for my FastAPI application that includes test cases for authenticated user access and pagination boundary checks on the /users endpoint."
3. "Analyze my Next.js API directory and identify all POST routes; then, generate a test scaffold that includes a file upload scenario with size validation."

Tips & Limitations

To get the most out of this tool, ensure your codebase follows standard framework routing conventions, as the scanner relies on pattern matching for route definitions. While it is excellent at generating boilerplate, complex business logic that requires state-heavy database seeding should be supplemented with custom test helpers. Always review the generated test files to ensure they align with your project's specific authentication middleware configurations.