Run RSpec tests on rails and non-rails environments

.github/workflows/rspec-shared.yml

@@ -0,0 +1,32 @@
+name: RSpec Shared
+
+on:
+  workflow_call:
+    inputs:
+      rspec-task:
+        required: true
+        type: string
+
+jobs:
+  rspec:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.2"
+          bundler-cache: true
+      - name: Install dependencies
+        run: bundle install
+      - name: Run tests
+        env:
+          RAILS_ENV: test
+        run: bundle exec ${{ inputs.rspec-task }}
+      - name: Upload coverage results
+        uses: actions/upload-artifact@master
+        if: always()
+        with:
+          name: coverage-report-${{ github.run_id }}-ubuntu-latest-ruby-3.2
+          path: coverage

.github/workflows/rspec.yml

@@ -5,28 +5,17 @@ on:
     branches:
       - main
   pull_request:
+  workflow_dispatch:
 
 jobs:
-  rspec:
-    runs-on: ubuntu-latest
-    name: RSpec
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: "3.2"
-          bundler-cache: true
-      - name: Install dependencies
-        run: bundle install
-      - name: Run tests
-        env:
-          RAILS_ENV: test
-        run: bundle exec rspec --format documentation
-      - name: Upload coverage results
-        uses: actions/upload-artifact@master
-        if: always()
-        with:
-          name: coverage-report-${{ github.run_id }}-ubuntu-latest-ruby-3.2
-          path: coverage
+  non-rails-rspec:
+    name: RSpec (non-rails)
+    uses: ./.github/workflows/rspec-shared.yml
+    with:
+      rspec-task: non_rails_spec
+
+  rails-rspec:
+    name: RSpec (on rails)
+    uses: ./.github/workflows/rspec-shared.yml
+    with:
+      rspec-task: rails_spec

Gemfile

@@ -9,7 +9,9 @@ group :development do
 end
 
 group :test do
+  gem 'rails', '~> 7.1.1'
   gem 'rspec', '~> 3.2'
+  # gem 'rspec-rails'
   gem 'simplecov', '~> 0.21'
 end
 

Rakefile

@@ -4,7 +4,46 @@ require 'bundler/gem_tasks'
 require 'rubocop/rake_task'
 require 'rspec/core/rake_task'
 
-RSpec::Core::RakeTask.new(:spec)
 RuboCop::RakeTask.new
+RSpec::Core::RakeTask.new(:spec)
+
+task default: %i[rubocop spec]
+
+desc 'Run tests on non-rails application environment'
+task :non_rails_spec do
+  ENV.delete('RAILS_APP_PATH')
+
+  Rake::Task[:spec].invoke
+end
+
+DUMMY_RAILS_APP_PATH = 'tmp/test/dummy/'
+
+desc 'Run tests on rails application environment'
+task :rails_spec do
+  ENV['RAILS_APP_PATH'] = File.expand_path(DUMMY_RAILS_APP_PATH, __dir__)
+
+  Rake::Task['rails:generate_dummy_app'].invoke(ENV.fetch('RAILS_APP_PATH'))
+  Rake::Task[:spec].invoke
+end
+
+namespace :rails do
+  desc 'Generate dummy rails application'
+  task :generate_dummy_app, [:app_path] do |_t, args|
+    app_path = args.fetch(:app_path)
+
+    if Dir.exist?(app_path)
+      puts "Using Rails application at #{app_path} as a dummy..."
+      next
+    end
 
-task default: %i[spec rubocop]
+    puts 'Generating dummy Rails application...'
+    system(
+      "rails new #{app_path} " \
+      '--skip-git --skip-asset-pipeline --skip-action-cable ' \
+      '--skip-action-mailer --skip-action-mailbox --skip-action-text ' \
+      '--skip-active-record --skip-active-job --skip-active-storage ' \
+      '--skip-javascript --skip-hotwire --skip-jbuilder ' \
+      '--skip-test --skip-system-test --skip-bootsnap ',
+    )
+  end
+end

spec/rspec_settings.rb

@@ -3,11 +3,28 @@
 require 'simplecov'
 SimpleCov.start do
   add_filter '/spec/'
+  add_filter %r{^/tmp/}
 end
 
 require 'uber_task'
 require 'colorize'
 
+rails_app_path = ENV.fetch('RAILS_APP_PATH', nil)
+
+if rails_app_path
+  unless Dir.exist?(rails_app_path)
+    raise "Rails application at #{rails_app_path} doesn't exit"
+  end
+
+  require File.expand_path(
+    File.join(rails_app_path, '/config/environment.rb'),
+    __dir__,
+  )
+
+  ENV['RAILS_ROOT'] = rails_app_path
+  raise 'Failed to load Rails application' unless defined?(Rails)
+end
+
 RSpec.configure do |config|
   config.expect_with :rspec do |c|
     c.syntax = :expect

spec/uber_task/internal/path_spec.rb

@@ -26,7 +26,7 @@
     end
 
     context 'in rails' do
-      let(:rails_root) { Pathname.new(Dir.pwd) }
+      let(:rails_root) { defined?(Rails) ? Rails.root : Pathname.new(Dir.pwd) }
       let(:paths) do
         [
           rails_root.join('abc').to_s,
@@ -36,7 +36,7 @@
       end
 
       before do
-        stub_const('Rails', double(root: rails_root))
+        stub_const('Rails', double(root: rails_root)) unless defined?(Rails)
       end
 
       it 'shortens paths' do

spec/uber_task/logger_spec.rb

@@ -14,8 +14,12 @@
       )
     end
 
-    context 'when Rails logger is not defined' do
-      it 'uses stdout logger by default' do
+    it 'uses Rails or stdout logger by default' do
+      if defined?(Rails)
+        expect(Rails.logger).to receive(:info).with('some message')
+
+        described_class.logger.info('some message')
+      else
         expect do
           described_class.logger.info('some message')
         end.to output(/some message/).to_stdout