I've been thinking lately that how I could do some integration testing FOR my CI-pipelines. My client has very complex pipelines which has business logic inside them and every week we run into new bugs and regressions. I can't think any easy way to write tests for them to make it harder to break when developing new features.

Btw. Gitlab allows splitting your pipelines to multiple files using include[1]. Also we have used gitlab-ci-local[2] to run our pipelines locally when developing them.

1: https://docs.gitlab.com/ee/ci/yaml/includes.html 2: https://github.com/firecow/gitlab-ci-local