Introduce suspenders:jobs generator

Ports the existing generator to Suspenders 3.0.

NEWS.md

@@ -6,6 +6,7 @@ Unreleased
 * Introduce `suspenders:factories` generator
 * Introduce `suspenders:advisories` generator
 * Introduce `suspenders:styles` generator
+* Introduce `suspenders:jobs` generator
 
 20230113.0 (January, 13, 2023)
 

README.md

@@ -87,6 +87,15 @@ Also creates additional stylesheets if using PostCSS.
   [cssbundling-rails]: https://github.com/rails/cssbundling-rails
   [modern-normalize]: https://github.com/sindresorhus/modern-normalize
 
+
+### Jobs
+
+Installs [Sidekiq][] for background job processing and configures ActiveJob for job queueing.
+
+`bin/rails g suspenders:jobs`
+
+  [Sidekiq]: https://github.com/sidekiq/sidekiq
+
 ## Contributing
 
 See the [CONTRIBUTING] document.

lib/generators/suspenders/jobs_generator.rb

@@ -0,0 +1,36 @@
+module Suspenders
+  module Generators
+    class JobsGenerator < Rails::Generators::Base
+      source_root File.expand_path("../../templates/active_job", __FILE__)
+      desc "Installs Sidekiq for background job processing."
+
+      def add_sidekiq_gem
+        gem "sidekiq"
+        Bundler.with_unbundled_env { run "bundle install" }
+      end
+
+      def initialize_active_job
+        copy_file "active_job.rb", "config/initializers/active_job.rb"
+      end
+
+      def configure_active_job
+        environment "config.active_job.queue_adapter = :sidekiq"
+        environment "config.action_mailer.deliver_later_queue_name = nil"
+        environment "config.action_mailbox.queues.routing = nil"
+        environment "config.active_storage.queues.analysis = nil"
+        environment "config.active_storage.queues.purge = nil"
+        environment "config.active_storage.queues.mirror = nil"
+        environment "config.active_job.queue_adapter = :inline", env: "test"
+      end
+
+      def configure_procfile
+        if Rails.root.join("Procfile.dev").exist?
+          append_to_file "Procfile.dev", "worker: bundle exec sidekiq"
+        else
+          say "Add default Procfile.dev"
+          create_file "Procfile.dev", "worker: bundle exec sidekiq"
+        end
+      end
+    end
+  end
+end

lib/generators/templates/active_job/active_job.rb

@@ -0,0 +1,14 @@
+require "active_job/logging"
+require "active_job/log_subscriber"
+
+ActiveSupport::Notifications.unsubscribe("enqueue.active_job")
+
+module ActiveJob
+  module Logging
+    class EnqueueLogSubscriber < LogSubscriber
+      define_method :enqueue, instance_method(:enqueue)
+    end
+  end
+end
+
+ActiveJob::Logging::EnqueueLogSubscriber.attach_to(:active_job)

test/generators/suspenders/jobs_generator_test.rb

@@ -0,0 +1,122 @@
+require "test_helper"
+require "generators/suspenders/jobs_generator"
+
+module Suspenders
+  module Generators
+    class JobsGeneratorTest < Rails::Generators::TestCase
+      include Suspenders::TestHelpers
+
+      tests Suspenders::Generators::JobsGenerator
+      destination Rails.root
+      setup :prepare_destination
+      teardown :restore_destination
+
+      test "adds gems to Gemfile" do
+        expected_output = <<~RUBY
+          gem "sidekiq"
+        RUBY
+
+        run_generator
+
+        assert_file app_root("Gemfile") do |file|
+          assert_match(expected_output, file)
+        end
+      end
+
+      test "installs gems with Bundler" do
+        output = run_generator
+
+        assert_match(/bundle install/, output)
+      end
+
+      test "generator has a description" do
+        description = "Installs Sidekiq for background job processing."
+
+        assert_equal description, Suspenders::Generators::JobsGenerator.desc
+      end
+
+      test "configures ActiveJob logging" do
+        expected_configuration = <<~RUBY
+          require "active_job/logging"
+          require "active_job/log_subscriber"
+
+          ActiveSupport::Notifications.unsubscribe("enqueue.active_job")
+
+          module ActiveJob
+            module Logging
+              class EnqueueLogSubscriber < LogSubscriber
+                define_method :enqueue, instance_method(:enqueue)
+              end
+            end
+          end
+
+          ActiveJob::Logging::EnqueueLogSubscriber.attach_to(:active_job)
+        RUBY
+
+        run_generator
+
+        assert_file app_root("config/initializers/active_job.rb") do |file|
+          assert_equal(expected_configuration, file)
+        end
+      end
+
+      test "adds ActiveJob configuration to the application file" do
+        run_generator
+
+        assert_file app_root("config/application.rb") do |file|
+          assert_match(/config.active_job.queue_adapter = :sidekiq/, file)
+          assert_match(/config.action_mailer.deliver_later_queue_name = nil/, file)
+          assert_match(/config.action_mailbox.queues.routing = nil/, file)
+          assert_match(/config.active_storage.queues.analysis = nil/, file)
+          assert_match(/config.active_storage.queues.purge = nil/, file)
+          assert_match(/config.active_storage.queues.mirror = nil/, file)
+        end
+      end
+
+      test "adds ActiveJob configuration to the test environment file" do
+        run_generator
+
+        assert_file app_root("config/environments/test.rb") do |file|
+          assert_match(/config.active_job.queue_adapter = :inline/, file)
+        end
+      end
+
+      test "creates a Procfile.dev with Sidekiq configuration" do
+        run_generator
+
+        assert_file app_root("Procfile.dev") do |file|
+          assert_match(/worker: bundle exec sidekiq/, file)
+        end
+      end
+
+      test "adds Sidekiq configuration if procfile exists" do
+        proc_file = <<~TEXT
+        TEXT
+
+        File.write(app_root("Procfile.dev"), proc_file)
+
+        run_generator
+
+        assert_file app_root("Procfile.dev") do |file|
+          assert_match(/worker: bundle exec sidekiq/, file)
+        end
+      end
+
+      private
+
+      def prepare_destination
+        touch "Gemfile"
+        backup_file "config/application.rb"
+        backup_file "config/environments/test.rb"
+      end
+
+      def restore_destination
+        remove_file_if_exists "Gemfile"
+        remove_file_if_exists "config/initializers/active_job.rb"
+        remove_file_if_exists "Procfile.dev"
+        restore_file "config/application.rb"
+        restore_file "config/environments/test.rb"
+      end
+    end
+  end
+end

test/test_helper.rb

@@ -77,8 +77,7 @@ class Application < Rails::Application
   end
 
   def backup_file(file)
-    FileUtils.mv app_root(file), app_root("#{file}.bak")
-    touch file
+    FileUtils.copy app_root(file), app_root("#{file}.bak")
   end
 
   def restore_file(file)