DeutschHoudini is was a new SaaS product – currently in private beta – that “watches you using your site and automatically generates end to end tests that run continuously in the cloud”.
After having added some JavaScript code to your web app Houdini will follow and record your clicks, inputs and actions. These recordings are then used for automatically generating tests that run continuously. So, if a code change breaks your app’s front end behaviour you will be informed about this.
This is a quite clever approach that complements other test strategies. While proper unit testing and carefully written acceptance tests for your UI will capture many breaking changes writing acceptance tests that cover each and every aspect of your app’s user interaction is very hard. Having a tool that automatically captures and plays back real world user interaction therefore should come in handy.