ci.yml

# .github/workflows/ci.yml

name: CI
on: [push]
jobs:
  build:
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:11
        ports:
          - 5432:5432
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
    steps:
      - uses: actions/checkout@v1

      - uses: actions/setup-ruby@v1
        with:
          ruby-version: 2.6.x

      - name: Install dependent libraries
        run: sudo apt-get install libpq-dev

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

      - name: Setup Database
        run: |
          cp .github/workflows/database.yml.ci config/database.yml
          bundle exec rake db:create
          bundle exec rake db:schema:load
        env:
          RAILS_ENV: test
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
          RAILS_MASTER_KEY: ${{ secrets.RAILS_MASTER_KEY }}

      - name: Run Test
        run: bundle exec rake
        env:
          RAILS_ENV: test
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
          RAILS_MASTER_KEY: ${{ secrets.RAILS_MASTER_KEY }}

database.yml.ci

# .github/workflows/database.yml.ci

test:
  adapter: postgresql
  host: localhost
  encoding: unicode
  database: github-actions
  pool: 20
  username: <%= ENV["POSTGRES_USER"] %>
  password: <%= ENV["POSTGRES_PASSWORD"] %>