Test against various versions of Ruby on Rails: 6.1, 7.0, edge

.github/workflows/lint.yml

@@ -0,0 +1,25 @@
+name: Lint
+
+on:
+  pull_request:
+  push:
+    branches:
+      - '**'
+    tags-ignore:
+      - 'v*'
+
+jobs:
+  rubocop:
+    # Skip running tests for local pull requests (use push event instead), run only for foreign ones
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.owner.login != github.event.pull_request.base.repo.owner.login
+    name: Standard.rb
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.1"
+          bundler-cache: true
+      - name: Lint Ruby code with Standard.rb
+        run: |
+          bundle exec rake standard

.github/workflows/test.yml

@@ -0,0 +1,36 @@
+name: Tests
+
+on:
+  pull_request:
+  push:
+    branches:
+      - '**'
+    tags-ignore:
+      - 'v*'
+
+jobs:
+  test:
+    name: 'Rails ${{ matrix.rails }} × Ruby ${{ matrix.ruby }}'
+    # Skip running tests for local pull requests (use push event instead), run only for foreign ones
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.owner.login != github.event.pull_request.base.repo.owner.login
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - ruby:  "3.1"
+            rails: "HEAD"
+          - ruby:  "3.0"
+            rails: "7.0"
+          - ruby:  "2.5"
+            rails: "6.1"
+    env:
+      RAILS_VERSION: ${{ matrix.rails }}
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
+    - name: Run specs
+      run: bundle exec rake spec

Gemfile

@@ -4,6 +4,20 @@ source "https://rubygems.org"
 
 gemspec
 
+# standard: disable Bundler/DuplicatedGem
+if (rails_version = ENV["RAILS_VERSION"])
+  case rails_version
+  when "HEAD"
+    git "https://github.com/rails/rails.git" do
+      gem "rails"
+    end
+  else
+    rails_version = "~> #{rails_version}.0" if rails_version.match?(/^\d+\.\d+$/) # "7.0" => "~> 7.0.0"
+    gem "rails", rails_version
+  end
+end
+# standard: enable Bundler/DuplicatedGem
+
 gem "rake", "~> 13.0"
 gem "rspec", "~> 3.0"
 gem "rspec-rails", "~> 5.0"

spec/dummy/config/application.rb

@@ -15,7 +15,7 @@ class Application < Rails::Application
     config.root = File.join(__dir__, "..")
     config.logger = Logger.new("/dev/null")
     config.api_only = true
-    config.active_record.legacy_connection_handling = false
+    config.active_record.legacy_connection_handling = false if ActiveRecord::Base.respond_to?(:legacy_connection_handling=)
 
     if Rails::VERSION::MAJOR >= 7
       config.active_record.async_query_executor = :global_thread_pool