QUnit2GS is a Google Apps Script Library that allows Apps Script projects to be tested using the QUnit JavaScript testing framework – qunitjs.com. Just add this library to your project and start writing tests in just a few minutes.
Created by Andrew Roberts and Alejo Grigera Sutro this library will make it easier to adopt test-driven development with your Google Apps Script projects. The site is worth an explore to see what is possible…
Source: Home | QUnitGS2
Member of Google Developers Experts Program for Google Workspace (Google Apps Script) and interested in supporting Google Workspace Devs.