Functional testing for Rijksmuseum.nl - Q42

The codebase for Rijksmuseum.nl has become quite large through the years. I mainly work on the frontend, but that alone demands quite a lot of attention to expand and improve while not breaking things along the way. We’ve had some tests to cover the most essential parts of the frontend, but frankly, they were hard to read, write and debug when something broke. This resulted in not writing them. Luckily I now have some time to clean this up. Little did I know…