Visual regression testing is a common example, especially with websites. I've put a few simple examples in Node.js here: https://github.com/umaar/learn-browser

Visual regression testing is a common example, especially with websites. I've put a few simple examples in Node.js here: https://github.com/umaar/learn-browser-testing/tree/master/3-auditing/3-visual-testing/single-element https://github.com/umaar/learn-browser-testing/tree/master/3... (just as learning material)