Group tests and execute groups in parallel#225
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Currently we're not able to require all tests ran in branch protection rules. This is because the build matrix is dynamic and the branch protection rules would need to be kept in sync with the ruby versions. Instead, we're introducing a job that checks whether all matrix jobs have succeeded. The branch protection requirement can depend on this singular job.
bobvanderlinden
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Apr 15, 2026
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Currently CI sometimes needs to build all ruby versions when a global change is made. This takes 6h+, which is over the GHA limit. The timed out build doesn't get pushed, so none of the internal builds of Ruby are being cached.
It would be nice if we could execute the build without hitting a GHA timeout. We can create a job per ruby version so that GHA will run many builds in parallel, each a normal amount of time and the 6h limit isn't hit.
I've split up the tests into 'groups'. Each ruby version is a group and there is an additional group for 'common' tests. The groups are being read in GHA and a matrix strategy, which is filled with all groups. Then all tests within each group is build within a separate job using the additional 'all' test, which is basically a linkFarm of the other tests in the group.