Testing Authentication Flows

Part of the Full Stack Developer Roadmap.

Summary

Specifically testing login, signup, protected routes and token expiry — since auth bugs are high-impact and easy to accidentally break while refactoring either side of the stack.

How to Learn This

1Write an E2E test that logs in and confirms access to a protected page.
2Write a test confirming an expired or invalid token correctly redirects to login.
3Test that a logged-out user genuinely cannot reach protected API endpoints, not just protected pages.

End-to-End Testing (Playwright/Cypress)

Stripe Integration

More topics in Testing the Full Stack

Unit Testing (Frontend)Unit Testing (Backend)Integration Testing API Testing End-to-End Testing (Playwright/Cypress)

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