name: CI
on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        ruby: [2.5, 2.6, 2.7]
        bundler: [default]
        gemfile:
          - rails-5.2
          - rails-6.0
          - rails-6.1

    env:
      BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
    steps:
      # https://github.com/marketplace/actions/checkout
      - uses: actions/checkout@v2
      # https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby
      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: ${{ matrix.ruby }}
          bundler: ${{ matrix.bundler }}
          bundler-cache: true # runs `bundle install` and caches gems automatically
      - name: Run tests
        run: bundle exec rake