Hi all, The JUnit5 (BEAM-3415 <https://issues.apache.org/jira/browse/BEAM-3415>) has been open for quite some time, and it's been of interest to me and our organisation as well, since Beam is the only thing keeping JUnit4 around for us
I took a stab at it and made a PR (#14272 <https://github.com/apache/beam/pull/14272>), I'd like to think it's clean and doesn't interfere with much else, the only outside observable change would be opening up the TestPipeline interface a bit (protected constructor to allow inheritance). The build is green minus 1 Jenkins job that timed out and I can't restart. The original ticket claims it's "a lot of work", but it didn't end up being that, I suspect JUnit5 has evolved a bit in the 2-3 years since the original issue. The OWNERS file on the 'core' module also only lists Luke as the sole maintainer, I've tagged him in the PR, but have no idea what the timeline expectations are. It's been 4 days now, if we're saying the turnaround is a couple weeks it's not urgent, but I also appreciate the OWNERS files sometimes get stale, so is it the case that @lukecwik is the only maintainer? Best, Emil
