Comment 3 for bug 1973033

Christian changed the test requirement on bug #1973031 to be a recommended

> I've ended up with "recommended" as high level tests are done as
> part of higher level autopkgtest. But consider at least trying to add at
> least some unit-tests at build time rather strongly recommended.

I'm going to assume it's the same here. I started by upstreaming a request on https://github.com/Igalia/WPEBackend-fdo/issues/174