Github action to bundle install and run test

.github/workflows/ruby.yml

@@ -0,0 +1,29 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+# This workflow will download a prebuilt Ruby version, install dependencies and run tests with Rake
+# For more information see: https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby
+
+name: Ruby
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['3.0', '3.1']
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+      - run: bundle exec rake

Gemfile

@@ -8,8 +8,8 @@ group :test do
   gem 'coffee-rails'
   gem 'sass-rails', '~> 6.0.0'
   gem 'money', '6.13'
-  gem 'rspec-rails', '~> 2.10'
-  gem 'shoulda-matchers', '2.2.0'
+  gem 'rspec-rails', '~> 5.1.0'
+  gem 'shoulda-matchers', '5.1.0'
   gem 'simplecov', :require => false
   gem 'simplecov-rcov'
   gem 'database_cleaner'