gitlab-foss/spec/dot_gitlab_ci/ci_configuration_validation

# ***********************************************************************************************************
# Tests in this folder are recommended to run locally to test ci configuration changes
# The tests are slow due to the yaml size and the amount of nodes to process.
# The specific bottleneck is at Gitlab::Ci::Pipeline::Chain::seed #perform!
# ***********************************************************************************************************
# TEST COVERAGE (Please keep this file updated)
#
# 1. Branch pipelines
#   GitLab.com gitlab-org/gitlab-foss Project
#     Master Pipeline Triggered by Push
#     Scheduled Master Pipeline
#     Scheduled ruby3_2 branch scheduled pipeline
#     Stable branch pipeline
#
#   GitLab.com gitlab-org/gitlab Master Pipeline
#     Default Master Pipeline Triggered by Push
#     Scheduled pipeline - Nightly
#     Scheduled pipeline - Maintenance
#
#   GitLab.com gitlab-org/security/gitlab
#     Default Master Pipeline
#     Scheduled pipeline - Nightly
#     Auto-deploy branch pipeline
#
# 2. Merge Request Pipeline (and merge train pipeline under the same contexts)
#   Unlabeled MR Changing GITALY_SERVER_VERSION
#   Unlabeled MR Changing Dangerfile, .gitlab/ci/frontend.gitlab-ci.yml
#   Unlabeled MR targeting stable branch Changing app/model/user.rb
#   Unlabeled MR Changing package.json
#
#   MR Labeled with pipeline:run-all-rspec Changing app/models/user.rb
#   MR Labeled with pipeline:expedite pipeline::expedited Changing app/models/user.rb
#   MR Labeled with pipeline::tier-1 Changing package.json
#   MR Labeled with pipeline::tier-2 Changiong package.json
#   MR Labeled with pipeline::tier-1 Changing app/models/user.rb
#   MR Labeled with pipeline::tier-2 and pipeline:mr-approved Changing app/models/user.rb
#   MR Labeled with pipeline::tier-3 and pipeline:mr-approved Changing app/models/user.rb
#   MR Labeled with pipeline:run-as-if-foss Changing app/models/user.rb
#   MR Labeled with pipeline:force-run-as-if-jh Changing app/models/user.rb
#   MR Labeled with pipeline:run-as-if-jh and pipeline:mr-approved Changing app/models/user.rb
#   MR Labeled with pipeline:run-in-ruby3_2 Changing app/models/user.rb
#
# Automated MR
#   MR Created from release-tools/update-gitaly Source Branch Changing GITALY_SERVER_VERSION
#
# Stable Branch
#   MR Targeting a Stable Branch Changing app/models/user.rb
#
# Fork Project MRs
#   MR Created from a Fork Project Master Branch Changing package.json
#   MR Created from a Fork Project Feature Branch Changing package.json
# ***********************************************************************************************************
# CONTRIBUTE
#
# If you think we are missing coverage for an important pipeline type, please add them.
#
# For example, ci rule changes could break gitlab-foss pipelines, as seen in
# https://gitlab.com/gitlab-org/quality/engineering-productivity/master-broken-incidents/-/issues/7356
# we then added test cases by simulating pipeline for gitlab-org/gitlab-foss
# See `with gitlab.com gitlab-org gitlab-foss project` context below for details.
# ***********************************************************************************************************