name: CI

on: [push, pull_request]

jobs:
  test:
    strategy:
      fail-fast: false

      matrix:
        ruby:
          - 2.5
          - 2.6
          - 2.7
          - 3.0
          - 3.1
        gemfile:
          - gemfiles/rails_5.0.gemfile
          - gemfiles/rails_5.1.gemfile
          - gemfiles/rails_5.2.gemfile
          - gemfiles/rails_6.0.gemfile
          - gemfiles/rails_6.1.gemfile
          - gemfiles/rails_7.0.gemfile
        exclude:
          # Rails < 6 does not support Ruby 3+:
          # https://github.com/rails/rails/issues/40938#issuecomment-751357907
          - ruby: 3.0
            gemfile: gemfiles/rails_5.0.gemfile
          - ruby: 3.0
            gemfile: gemfiles/rails_5.1.gemfile
          - ruby: 3.0
            gemfile: gemfiles/rails_5.2.gemfile
          - ruby: 3.1
            gemfile: gemfiles/rails_5.0.gemfile
          - ruby: 3.1
            gemfile: gemfiles/rails_5.1.gemfile
          - ruby: 3.1
            gemfile: gemfiles/rails_5.2.gemfile

          # Rails 7.0 requires Ruby 2.7+
          - ruby: 2.5
            gemfile: gemfiles/rails_7.0.gemfile
          - ruby: 2.6
            gemfile: gemfiles/rails_7.0.gemfile

    env:
      BUNDLE_GEMFILE: "${{ matrix.gemfile }}"

    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v3
    - name: Set up Ruby
      uses: ruby/setup-ruby@v1
      with:
        ruby-version: ${{ matrix.ruby }}
        bundler-cache: true

    - name: Rubocop
      if: ${{ matrix.ruby == '3.1' }}
      run: "bundle exec rubocop"

    - name: Tests
      run: bundle exec rake spec