Add automated tests to existing code with AI help

Use this guide when you have a working project with few or no tests and want to change it safely. Have the project running locally, a testing tool installed for your language and version control set up.

Step by step

1. Choose what to test first

   List the most important and most fragile parts of your code, such as payment calculations, data imports or login. Start with one area that would cause real harm if it broke. Testing everything at once is overwhelming and rarely finished.