name: CI
on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]
jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        ruby-version: ['2.7', '3.0', '3.1']
    steps:
    - uses: actions/checkout@v2
    - name: Set up Ruby
      uses: ruby/setup-ruby@v1
      with:
        ruby-version: ${{ matrix.ruby-version }}
        bundler-cache: true
    - name: Run tests
      run: bundle exec rspec

Add GitHub Actions for CI (run tests)
Add GitHub Actions for CI (run tests)