Test

The testing stage is where you check application correctness, cover edge cases, inspect performance, and confirm cross-browser compatibility before users see the software. Testing confirms that critical paths such as user authentication and payment processing work reliably under unexpected conditions.

Questions to answer before moving on:

• Does the production build command complete locally without warnings or type errors?
• Do forms correctly reject invalid input and display helpful error guidance?
• Can users complete critical authentication and checkout journeys across major desktop and mobile browsers?
• Are sensitive administrative routes and internal database queries protected against unauthorized access?