A quick introduction to the FFmpeg test suite.
FATE (FFmpeg Automated Testing Environment) is run on 50 different OS/processor/compiler combinations making sure that decoders and filters remain bitexact as well as checking all hand written assembly matches its C code.
It takes a lot longer than three minutes.
If you can't run your application test suite in three minutes or less, your business damn well better be worth a billion dollars or more. Otherwise it's time for fewer browser tests, fully txn-wrapped test cases, and local CI on Linux!