Add Ruby on Rails test example

README.md

@@ -42,6 +42,47 @@ jobs:
       - run: ruby hello.rb
 ```
 
+Ruby on Rails Testing:
+```yaml
+name: Rails Unit Tests
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    services:
+      db:
+        image: postgres:11
+        ports: ['5432:5432']
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Ruby 2.6
+      uses: actions/setup-ruby@v1
+      with:
+        ruby-version: 2.6.x
+    - name: Build and test with Rake
+      env:
+        PGHOST: 127.0.0.1
+        PGUSER: postgres
+        RAILS_ENV: test
+      run: |
+        sudo apt-get -yqq install libpq-dev
+        gem install bundler
+        bundle install --jobs 4 --retry 3
+        bundle exec rails db:create
+        bundle exec rails db:migrate
+        bundle exec rails test
+```
+
 # License
 
 The scripts and documentation in this project are released under the [MIT License](LICENSE)