We test our code locally, but we cannot test the workflow. By definition, testing the workflow has to be done on a CI-like system.

There is nektos/act for running github actions locally, it works for simple cases. There still are many differences between act and github actions.

It might be possible for a CI to define workflow steps using Containerfile/Dockerfile. Such workflows would be reproducible locally.

Time for the yearly barrage of “Setup CI”…“Fix CI” commits.

That is my experience with basically every CI service out there.