Github actions setup with Rspec and static code analysis for Ruby on Rails

rails-tests.yml

env:
  PGHOST: localhost
  PGPASS: runner
  PGUSER: runner
  RAILS_ENV: test
  DATABASE_URL: postgresql://runner:runner@localhost

name: Rails Tests
on: [push, pull_request_review]

jobs:
  test:
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false

      matrix:
        include:
          - name: traceroute
            command: bin/traceroute --ci
            requires_yarn: false
            requires_gems: true
            requires_db: false
          - name: brakeman
            command: bin/brakeman --ci
            requires_yarn: false
            requires_gems: true
            requires_db: false
          - name: database_consistency
            command: bin/database_consistency --ci
            requires_yarn: false
            requires_gems: true
            requires_db: true
          - name: erblint
            command: bin/erblint --ci
            requires_yarn: false
            requires_gems: true
            requires_db: false
          - name: rspec
            command: bin/rspec --ci
            requires_yarn: true
            requires_gems: true
            requires_db: true
          - name: rubocop
            command: bin/rubocop --ci
            requires_yarn: false
            requires_gems: true
            requires_db: false
          - name: eslint
            command: bin/eslint --ci
            requires_yarn: true
            requires_gems: false
            requires_db: false
          - name: jest
            command: bin/jest --ci
            requires_yarn: true
            requires_gems: false
            requires_db: false
          - name: stylelint
            command: bin/stylelint --ci
            requires_yarn: true
            requires_gems: false
            requires_db: false

    name: ${{ matrix.name }}

    services:
      postgres:
        image: postgres:11
        env:
          POSTGRES_USER: ${{ env.PGUSER }}
          POSTGRES_PASSWORD: ${{ env.PGPASS }}
        ports:
          - 5432:5432

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Setup Ruby
        uses: ruby/setup-ruby@v1
        if: ${{ matrix.requires_gems }}

      - name: Ruby gem cache
        uses: actions/cache@v2
        with:
          path: vendor/bundle
          key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
          restore-keys: ${{ runner.os }}-gems-
        if: ${{ matrix.requires_gems }}

      - name: Install gems
        run: |
          bundle config path vendor/bundle
          bundle install --jobs 4 --retry 3
        if: ${{ matrix.requires_gems }}

      - name: Setup Node
        uses: actions/setup-node@v2
        with:
          node-version: '12'
        if: ${{ matrix.requires_yarn }}

      - name: Find yarn cache location
        id: yarn-cache
        run: echo "::set-output name=dir::$(yarn cache dir)"
        if: ${{ matrix.requires_yarn }}

      - name: JS package cache
        uses: actions/cache@v2
        with:
          path: ${{ steps.yarn-cache.outputs.dir }}
          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: ${{ runner.os }}-yarn-
        if: ${{ matrix.requires_yarn }}

      - name: Install packages
        run: yarn install --pure-lockfile
        if: ${{ matrix.requires_yarn }}

      - name: Setup test database
        run: bin/rails db:setup
        if: ${{ matrix.requires_db }}

      - name: Run ${{ matrix.name }}
        run: ${{ matrix.command }}