Migrate CI to GitHub Actions

Adds a number of more recent Ruby and Rails versions
Loosens the restrictions in the gemspec to enable those more recent versions to bundle
Makes minor changes to the dummy Rails app to allow it to work with Rails 7
Conditionally explicitly includes the net-* mail gems for the Ruby 3.1 / Rails 6.1.x combination

Author: petergoldstein

.github/workflows/ci.yml

@@ -0,0 +1,56 @@
+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Ruby ${{ matrix.ruby }}, Rails ${{ matrix.rails }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: [3.1, '3.0', 2.7, 2.6, ruby-head]
+        rails: ['7.0.0', '6.1.0', '6.0.0', '5.2.0', main]
+        exclude:
+          - ruby: ruby-head
+            rails: '6.1.0'
+          - ruby: ruby-head
+            rails: '6.0.0'
+          - ruby: ruby-head
+            rails: '5.2.0'
+          - ruby: 3.1
+            rails: '6.0.0'
+          - ruby: 3.1
+            rails: '5.2.0'
+          - ruby: 3.0
+            rails: main
+          - ruby: 3.0
+            rails: '6.0.0'
+          - ruby: 3.0
+            rails: '5.2.0'
+          - ruby: 2.7
+            rails: main
+          - ruby: 2.7
+            rails: '5.2.0'
+          - ruby: 2.6
+            rails: main
+          - ruby: 2.6
+            rails: '7.0.0'
+          - ruby: 2.6
+            rails: '6.1.0'
+          - ruby: 2.6
+            rails: '6.0.0'
+
+    env:
+      RAILS_VERSION: ${{ matrix.rails }}
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Ruby ${{ matrix.ruby }}
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true # 'bundle install' and cache
+    - name: Run tests
+      run: bundle exec rake

Gemfile

@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 rails_version = ENV['RAILS_VERSION'] || "default"
 rails =
   case rails_version
-  when 'master'
+  when 'main'
     { github: 'rails/rails' }
   when 'default'
     '>= 5.0'
@@ -13,4 +13,12 @@ rails =
 
 gem 'rails', rails
 
+# Required for Rails 6.1.x with Ruby 3.1+
+if RUBY_VERSION >= '3.1'
+  gem 'net-smtp', require: false
+  gem 'net-imap', require: false
+  gem 'net-pop', require: false
+end
+
+
 gemspec

jsonapi-rails.gemspec

@@ -17,11 +17,10 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'jsonapi-rb', '~> 0.5.0'
   spec.add_dependency 'jsonapi-parser', '~> 0.1.0'
 
-  spec.add_development_dependency 'rails', '~> 5.0'
-  spec.add_development_dependency 'sqlite3', '~> 1.3'
-  spec.add_development_dependency 'rake',        '~> 11.3'
+  spec.add_development_dependency 'rails', '>= 5.0'
+  spec.add_development_dependency 'sqlite3', '>= 1.3'
+  spec.add_development_dependency 'rake',        '>= 11.3'
   spec.add_development_dependency 'rspec-rails', '~> 3.5'
   spec.add_development_dependency 'with_model',  '~> 2.0'
   spec.add_development_dependency 'simplecov'
-  spec.add_development_dependency 'pry-byebug'
 end

spec/dummy/config/environments/test.rb

@@ -5,7 +5,7 @@
   # test suite. You never need to work with it otherwise. Remember that
   # your test database is "scratch space" for the test suite and is wiped
   # and recreated between test runs. Don't rely on the data there!
-  config.cache_classes = true
+  config.cache_classes = false
 
   # Do not eager load code on boot. This avoids loading your whole application
   # just for the purpose of running a single test. If you are using a tool that

spec/dummy/config/initializers/assets.rb

@@ -1,7 +1,9 @@
 # Be sure to restart your server when you modify this file.
 
 # Version of your assets, change this if you want to expire all your assets.
-Rails.application.config.assets.version = '1.0'
+if Rails.application.config.respond_to?(:assets)
+  Rails.application.config.assets.version = '1.0'
+end
 
 # Add additional assets to the asset load path
 # Rails.application.config.assets.paths << Emoji.images_path

spec/dummy/config/storage.yml

@@ -0,0 +1,8 @@
+test:
+  service: Disk
+  root: <%= Rails.root.join("tmp/storage") %>
+
+local:
+  service: Disk
+  root: <%= Rails.root.join("storage") %>
+