Run tests on 11.x and declare compatibility with it

Just a heads up (i'm not sure what to do if anythin), there is overlapping work with 📌 GitLab CI - test for previous and next minor versions, and maximum PHP version Needs review which notably has a different solution to make the TestTime service work.

If it helps any, the alternative TestTime changes are isolated in this MR https://git.drupalcode.org/project/project_browser/-/merge_requests/487/...

Thanks @sime. I think it's fine to use \Drupal::state() in TestTime, instead of fancy-pants dependency injection, since it's just a test class. But, I'll respect whichever MR lands first.

I only barely understand it but it does seem cool. Do we close another of these other issues and focus on this one?

If there are other issues about 11.x compatibility, I'm guessing we should generally ignore them, at least for now, since this is probably the furthest along...?

You probably want to know what I changed in the test fixtures, since the diffs are too big for GitLab to show. What I changed was simple: I did an automatic search-and-replace. This:

core_semver_maximum: 10000000

became this:

core_semver_maximum: 99000000

That's it.

This all looks fine and I think it's good to get 11x testing in ASAP as that may wind up being the version where this debuts and it would be unfortunate to have to do a bunch of catchup because this was written for a version that is out of date by the time D.O. is ready for Project Browser.

Next/previous Minor support ready for review https://www.drupal.org/project/project_browser/issues/3423697 📌 GitLab CI - test for previous and next minor versions, and maximum PHP version Needs review

Automatically closed - issue fixed for 2 weeks with no activity.