Automatic Jest Test Generation for GitHub PRs with Dual AI Review

This n8n workflow automates unit test creation for GitHub pull requests, focusing on React and TypeScript files. Upon receiving webhook events for PR opened or synchronized, it fetches the PR details and diff, parses changed .tsx files, retrieves their full contents, and uses a 'Test Maker Agent' AI to generate targeted Jest tests based on diff hunks. A secondary 'Code Reviewer Agent' then refines these tests for style, edge cases, and best practices.

The workflow streamlines development by ensuring every PR includes suggested tests, reducing manual testing effort and improving code quality. Benefits include faster PR reviews, higher test coverage without developer burnout, and integration into CI/CD pipelines. It's particularly valuable for teams maintaining large React/TypeScript codebases with Jest.

Use cases: Open-source projects, enterprise dev teams on GitHub, agencies building React apps. Customize AI prompts for framework-specific tests or add notifications. Handles complex diffs intelligently, filtering only relevant files.