They still work, of course, but with more stages of recruitment taking place remotely, it is no longer as simple as arranging attendance in person and assessing in a controlled exam environment.
For many businesses, this has been common practice for some time; whilst others are now taking this route for safety amid the uncertainty of the future; and/or because of time constraints of what are typically smaller numbers of key staff often doing the job of their furloughed colleagues as well as their own.
Converting to online means you will have the assessment centralised, online, globally available 24/7, scored automatically with real-time results and management information.
If you take those tests online in a safe, secure, and organised fashion, a huge chunk of your recruitment process is taken care of.