Wordpress automation

Hey I need to automate testing for a WordPress site I have a framework built using WDIO Cucumber and Selenium but because the site journeys and content is in constant flux it needs constant maintenance and updating so I want to build a new framework that won’t require as much maintenance has anybody any experience with this and point me in the right direction e.g. use the WP API, a WP plugin or other tools, or should I go the route of mocking data to test functionality WDIO