[Feature] Sidekiq worker generator

Changes.md

@@ -3,6 +3,8 @@
 
 - Add queues list for each process to the Busy page. [davetoxa, #1897]
 - Fix for crash caused by empty config file. [jordan0day, #1901]
+- Add worker generator. You can generate a worker and it test file  with
+  `rails g sidekiq:worker User`, that will create UserWorker. [seuros, #1909]
 
 3.2.2
 -----------

lib/generators/sidekiq/templates/worker.rb.erb

@@ -0,0 +1,9 @@
+<% module_namespacing do -%>
+class <%= class_name %>Worker
+  include Sidekiq::Worker
+
+  def perform(*args)
+    # Do something
+  end
+end
+<% end -%>

lib/generators/sidekiq/templates/worker_spec.rb.erb

@@ -0,0 +1,6 @@
+require 'rails_helper'
+<% module_namespacing do -%>
+RSpec.describe <%= class_name %>Worker, :type => :worker do
+    pending "add some examples to (or delete) #{__FILE__}"
+end
+<% end -%>

lib/generators/sidekiq/templates/worker_test.rb.erb

@@ -0,0 +1,8 @@
+require_relative 'test_helper'
+<% module_namespacing do -%>
+class <%= class_name %>WorkerTest < MiniTest::Unit::TestCase
+    def test_example
+      skip "add some examples to (or delete) #{__FILE__}"
+    end
+end
+<% end -%>

lib/generators/sidekiq/worker_generator.rb

@@ -0,0 +1,49 @@
+require 'rails/generators/named_base'
+
+module Sidekiq
+  module Generators # :nodoc:
+    class WorkerGenerator < ::Rails::Generators::NamedBase # :nodoc:
+      desc 'This generator creates a sidekiq worker file at app/workers'
+
+      check_class_collision suffix: 'Worker'
+
+      def self.default_generator_root
+        File.dirname(__FILE__)
+      end
+
+      def create_worker_file
+        template 'worker.rb.erb', File.join('app/workers', class_path, "#{file_name}_worker.rb")
+      end
+
+      def create_test_file
+        if defined?(RSpec)
+          create_worker_spec
+        else
+          create_worker_test
+        end
+      end
+
+      private
+
+      def create_worker_spec
+        template_file = File.join(
+            'spec/workers',
+            class_path,
+            "#{file_name}_spec.rb"
+        )
+        template 'worker_spec.rb.erb', template_file
+      end
+
+      def create_worker_test
+        template_file = File.join(
+            'test/workers',
+            class_path,
+            "#{file_name}_test.rb"
+        )
+        template 'worker_test.rb.erb', template_file
+      end
+
+
+    end
+  end
+end