Why the CI/CD tool choice matters for testing
Every CI/CD platform in this comparison — GitHub Actions, GitLab Pipelines, Jenkins, CircleCI, TeamCity, Travis CI, Bitbucket Pipelines, Tekton, Harness — solves the same basic problem: run the test suite automatically, on every change, before anything gets merged or deployed. What differs between them is where they run, how they're configured, and how much operational overhead they add on top of "running tests." This article walks through GitHub Actions with a working example, and compares it against the alternatives a team is likely to be choosing between.
What is GitHub Actions?
GitHub Actions is GitHub's native CI/CD platform. Workflows are defined as YAML files living inside the repository itself, under .github/workflows/, and triggered directly by GitHub events (push, pull request, schedule, manual dispatch) with no separate server to install or maintain — GitHub runs the jobs on hosted runners.
Public example repository (mine, built for this comparison): https://github.com/mary010-sky/github-actions-ci-demo
