name: Run RuboCop

on: [push]

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v1

    - name: Set up Ruby 2.6
      uses: actions/setup-ruby@v1
      with:
        ruby-version: 2.6.x

    - name: Set Gemfile
      run: |
        echo "">> Gemfile
        echo "group :test do">> Gemfile
        echo "  gem 'rubocop', require: false" >> Gemfile
        echo "  gem 'rubocop-performance', require: false" >> Gemfile
        echo "  gem 'rubocop-rails', require: false" >> Gemfile
        echo "end">> Gemfile

    - name: Setup gems
      run: |
        gem install bundler
        bundle install --jobs 4 --retry 3

    - name: Run RuboCop
      run: |
        bundle exec rubocop -S