ci.yml

name: CI build
on: [push, pull_request]
jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        ruby:
          - '2.5'
          - '2.6'
          - '2.7'
          - '3.0'
          - '3.1'
          - '3.2'
          - head
          - jruby
          - jruby-head
          - truffleruby
          - truffleruby-head
    runs-on: ${{ matrix.os }}
    steps:
    - uses: actions/checkout@v2
    - uses: ruby/setup-ruby@v1
      with:
        ruby-version: ${{ matrix.ruby }}
        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
    - run: bundle exec rake
    # NOTE: calling "bundle install" because the cache apparently did not update due to the gemspec injection
    - run: bundle install && bundle exec standardrb
      if: matrix.ruby == '3.1' # not using "head" because rubocop won't work there yet
  # What's below helps having a single "status check" for mergeability, without
  # having to add each new version to the list of expected status checks in GitHub.
  # See https://github.community/t/status-check-for-a-matrix-jobs/127354/7 
  global:
    if: ${{ always() }}
    runs-on: ubuntu-latest
    name: build (matrix)
    needs: build
    steps:
      - name: Check build matrix status
        if: ${{ needs.build.result != 'success' }}
        run: exit 1