Automated Testing

Automated testing involves writing code that tests other code. A developer or QA engineer creates scripts that simulate user actions, check API responses, or verify that individual functions return correct results. These scripts can be run repeatedly and quickly, making them ideal for catching regressions when code changes.

The main advantage of automated testing is speed and consistency. Once a test is written, it can run in seconds and will check the exact same thing every time. This is valuable for continuous integration pipelines where code changes need to be verified quickly. Common frameworks include Jest for JavaScript unit tests, Playwright for browser automation, and Cypress for end-to-end testing.

However, automated testing has significant limitations for vibecoded apps. Writing good automated tests requires technical expertise that many vibecoders do not have. The tests can only check for conditions someone anticipated, meaning they miss the unexpected issues that AI-generated code is prone to creating. Automated tests also cannot evaluate subjective qualities like usability or visual consistency. This is why a combination of automated and manual testing provides the strongest quality safety net.