grep -rl '# Copyright © .* Pleroma' * | xargs sed -i 's;Copyright © .* Pleroma .*;Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>;'
Caching can't work in async tests, so for them it is mocked to a null cache that is always empty. Synchronous tests are stubbed with the real Cachex, which is emptied after every test.