Make resource generator invoke serializer generator

lib/active_model/serializer/railtie.rb

@@ -0,0 +1,8 @@
+module ActiveModel
+  class Railtie < Rails::Railtie
+    initializer 'generators' do |app|
+      app.load_generators
+      require 'generators/serializer/resource_override'
+    end
+  end
+end

lib/active_model_serializers.rb

@@ -2,6 +2,7 @@ require 'active_model'
 require 'active_model/serializer/version'
 require 'active_model/serializer'
 require 'active_model/serializer/fieldset'
+require 'active_model/serializer/railtie'
 
 begin
   require 'action_controller'

lib/generators/serializer/resource_override.rb

@@ -0,0 +1,12 @@
+require 'rails/generators'
+require 'rails/generators/rails/resource/resource_generator'
+
+module Rails
+  module Generators
+    class ResourceGenerator
+      def add_serializer
+        invoke 'serializer'
+      end
+    end
+  end
+end

test/generators/scaffold_controller_generator_test.rb

@@ -0,0 +1,24 @@
+require 'test_helper'
+# require 'active_model/serializer/railtie'
+
+class ResourceGeneratorTest < Rails::Generators::TestCase
+  destination File.expand_path('../../tmp', __FILE__)
+  setup :prepare_destination, :copy_routes
+
+  tests Rails::Generators::ResourceGenerator
+  arguments %w(account)
+
+  def test_serializer_file_is_generated
+    run_generator
+
+    assert_file 'app/serializers/account_serializer.rb', /class AccountSerializer < ActiveModel::Serializer/
+  end
+
+  private
+
+  def copy_routes
+    config_dir = File.join(destination_root, 'config')
+    FileUtils.mkdir_p(config_dir)
+    File.write(File.join(config_dir, 'routes.rb'), 'Rails.application.routes.draw { }')
+  end
+end

test/generators/serializer_generator_test.rb

@@ -1,3 +1,4 @@
+require 'test_helper'
 require 'generators/serializer/serializer_generator'
 
 class SerializerGeneratorTest < Rails::Generators::TestCase

test/test_helper.rb

@@ -9,18 +9,20 @@ require 'minitest/autorun'
 # Ensure backward compatibility with Minitest 4
 Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)
 
+require 'active_model_serializers'
+
 class Foo < Rails::Application
   if Rails::VERSION::MAJOR >= 4
     config.eager_load = false
     config.secret_key_base = 'abc123'
     config.action_controller.perform_caching = true
-    config.active_support.test_order         = :random
+    config.active_support.test_order = :random
-    ActionController::Base.cache_store       = :memory_store
+    config.logger = Logger.new(nil)
+    ActionController::Base.cache_store = :memory_store
   end
 end
-Foo.load_generators
+ActionController::Base.cache_store.clear
-
+Foo.initialize!
-require "active_model_serializers"
 
 require 'fixtures/poro'