Use public Module#include, in favor of https://bugs.ruby-lang.org/issues/8846

ref: https://github.com/rails/rails/pull/18763#issuecomment-72349769

actionmailer/test/abstract_unit.rb

@@ -15,7 +15,7 @@ require 'mail'
 
 # Emulate AV railtie
 require 'action_view'
-ActionMailer::Base.send(:include, ActionView::Layouts)
+ActionMailer::Base.include(ActionView::Layouts)
 
 # Show backtraces for deprecated behavior for quicker cleanup.
 ActiveSupport::Deprecation.debug = true

actionpack/lib/abstract_controller/railties/routes_helpers.rb

@@ -6,9 +6,9 @@ module AbstractController
           define_method(:inherited) do |klass|
             super(klass)
             if namespace = klass.parents.detect { |m| m.respond_to?(:railtie_routes_url_helpers) }
-              klass.send(:include, namespace.railtie_routes_url_helpers(include_path_helpers))
+              klass.include(namespace.railtie_routes_url_helpers(include_path_helpers))
             else
-              klass.send(:include, routes.url_helpers(include_path_helpers))
+              klass.include(routes.url_helpers(include_path_helpers))
             end
           end
         end

actionpack/lib/action_dispatch/testing/assertions/routing.rb

@@ -144,7 +144,7 @@ module ActionDispatch
           old_controller, @controller = @controller, @controller.clone
           _routes = @routes
 
-          @controller.singleton_class.send(:include, _routes.url_helpers)
+          @controller.singleton_class.include(_routes.url_helpers)
           @controller.view_context_class = Class.new(@controller.view_context_class) do
             include _routes.url_helpers
           end

actionpack/test/controller/helper_test.rb

@@ -29,7 +29,7 @@ module ImpressiveLibrary
   def useful_function() end
 end
 
-ActionController::Base.send :include, ImpressiveLibrary
+ActionController::Base.include(ImpressiveLibrary)
 
 class JustMeController < ActionController::Base
   clear_helpers
@@ -223,10 +223,10 @@ class HelperTest < ActiveSupport::TestCase
     # fun/pdf_helper.rb
     assert methods.include?(:foobar)
   end
-  
+
   def test_helper_proxy_config
     AllHelpersController.config.my_var = 'smth'
-    
+
     assert_equal 'smth', AllHelpersController.helpers.config.my_var
   end
 

actionpack/test/controller/integration_test.rb

@@ -682,7 +682,7 @@ class IntegrationProcessTest < ActionDispatch::IntegrationTest
           get 'get/:action', :to => controller, :as => :get_action
         end
 
-        self.singleton_class.send(:include, set.url_helpers)
+        self.singleton_class.include(set.url_helpers)
 
         yield
       end

actionpack/test/controller/localized_templates_test.rb

@@ -30,7 +30,7 @@ class LocalizedTemplatesTest < ActionController::TestCase
 
   def test_use_fallback_locales
     I18n.locale = :"de-AT"
-    I18n.backend.class.send(:include, I18n::Backend::Fallbacks)
+    I18n.backend.class.include(I18n::Backend::Fallbacks)
     I18n.fallbacks[:"de-AT"] = [:de]
 
     get :hello_world

actionpack/test/controller/resources_test.rb

@@ -1184,7 +1184,7 @@ class ResourcesTest < ActionController::TestCase
       end
 
       @controller = "#{options[:options][:controller].camelize}Controller".constantize.new
-      @controller.singleton_class.send(:include, @routes.url_helpers)
+      @controller.singleton_class.include(@routes.url_helpers)
       @request    = ActionController::TestRequest.new
       @response   = ActionController::TestResponse.new
       get :index, params: options[:options]
@@ -1254,7 +1254,7 @@ class ResourcesTest < ActionController::TestCase
     def assert_singleton_named_routes_for(singleton_name, options = {})
       (options[:options] ||= {})[:controller] ||= singleton_name.to_s.pluralize
       @controller = "#{options[:options][:controller].camelize}Controller".constantize.new
-      @controller.singleton_class.send(:include, @routes.url_helpers)
+      @controller.singleton_class.include(@routes.url_helpers)
       @request    = ActionController::TestRequest.new
       @response   = ActionController::TestResponse.new
       get :show, params: options[:options]

actionview/lib/action_view/railtie.rb

@@ -38,7 +38,7 @@ module ActionView
 
     initializer "action_view.setup_action_pack" do |app|
       ActiveSupport.on_load(:action_controller) do
-        ActionView::RoutingUrlFor.send(:include, ActionDispatch::Routing::UrlFor)
+        ActionView::RoutingUrlFor.include(ActionDispatch::Routing::UrlFor)
       end
     end
 

actionview/lib/action_view/test_case.rb

@@ -204,7 +204,7 @@ module ActionView
       def view
         @view ||= begin
           view = @controller.view_context
-          view.singleton_class.send :include, _helpers
+          view.singleton_class.include(_helpers)
           view.extend(Locals)
           view.rendered_views = self.rendered_views
           view.output_buffer = self.output_buffer

actionview/test/abstract_unit.rb

@@ -268,7 +268,7 @@ class Rack::TestCase < ActionDispatch::IntegrationTest
   end
 end
 
-ActionView::RoutingUrlFor.send(:include, ActionDispatch::Routing::UrlFor)
+ActionView::RoutingUrlFor.include(ActionDispatch::Routing::UrlFor)
 
 module ActionController
   class Base

actionview/test/activerecord/controller_runtime_test.rb

@@ -4,7 +4,7 @@ require 'fixtures/project'
 require 'active_support/log_subscriber/test_helper'
 require 'action_controller/log_subscriber'
 
-ActionController::Base.send :include, ActiveRecord::Railties::ControllerRuntime
+ActionController::Base.include(ActiveRecord::Railties::ControllerRuntime)
 
 class ControllerRuntimeLogSubscriberTest < ActionController::TestCase
   class LogSubscriberController < ActionController::Base

activejob/test/support/integration/helper.rb

@@ -20,7 +20,7 @@ require 'rails/test_help'
 Rails.backtrace_cleaner.remove_silencers!
 
 require_relative 'test_case_helpers'
-ActiveSupport::TestCase.send(:include, TestCaseHelpers)
+ActiveSupport::TestCase.include(TestCaseHelpers)
 
 JobsManager.current_manager.start_workers
 

activesupport/lib/active_support/concern.rb

@@ -114,7 +114,7 @@ module ActiveSupport
         return false
       else
         return false if base < self
-        @_dependencies.each { |dep| base.send(:include, dep) }
+        @_dependencies.each { |dep| base.include(dep) }
         super
         base.extend const_get(:ClassMethods) if const_defined?(:ClassMethods)
         base.class_eval(&@_included_block) if instance_variable_defined?(:@_included_block)

activesupport/lib/active_support/i18n_railtie.rb

@@ -68,7 +68,7 @@ module I18n
     end
 
     def self.include_fallbacks_module
-      I18n.backend.class.send(:include, I18n::Backend::Fallbacks)
+      I18n.backend.class.include(I18n::Backend::Fallbacks)
     end
 
     def self.init_fallbacks(fallbacks)

activesupport/lib/active_support/xml_mini/libxml.rb

@@ -75,5 +75,5 @@ module LibXML #:nodoc:
   end
 end
 
-LibXML::XML::Document.send(:include, LibXML::Conversions::Document)
-LibXML::XML::Node.send(:include, LibXML::Conversions::Node)
+LibXML::XML::Document.include(LibXML::Conversions::Document)
+LibXML::XML::Node.include(LibXML::Conversions::Node)

activesupport/lib/active_support/xml_mini/nokogiri.rb

@@ -77,7 +77,7 @@ module ActiveSupport
       end
     end
 
-    Nokogiri::XML::Document.send(:include, Conversions::Document)
-    Nokogiri::XML::Node.send(:include, Conversions::Node)
+    Nokogiri::XML::Document.include(Conversions::Document)
+    Nokogiri::XML::Node.include(Conversions::Node)
   end
 end

activesupport/test/concern_test.rb

@@ -59,24 +59,24 @@ class ConcernTest < ActiveSupport::TestCase
   end
 
   def test_module_is_included_normally
-    @klass.send(:include, Baz)
+    @klass.include(Baz)
     assert_equal "baz", @klass.new.baz
     assert @klass.included_modules.include?(ConcernTest::Baz)
   end
 
   def test_class_methods_are_extended
-    @klass.send(:include, Baz)
+    @klass.include(Baz)
     assert_equal "baz", @klass.baz
     assert_equal ConcernTest::Baz::ClassMethods, (class << @klass; self.included_modules; end)[0]
   end
 
   def test_included_block_is_ran
-    @klass.send(:include, Baz)
+    @klass.include(Baz)
     assert_equal true, @klass.included_ran
   end
 
   def test_modules_dependencies_are_met
-    @klass.send(:include, Bar)
+    @klass.include(Bar)
     assert_equal "bar", @klass.new.bar
     assert_equal "bar+baz", @klass.new.baz
     assert_equal "bar's baz + baz", @klass.baz
@@ -84,7 +84,7 @@ class ConcernTest < ActiveSupport::TestCase
   end
 
   def test_dependencies_with_multiple_modules
-    @klass.send(:include, Foo)
+    @klass.include(Foo)
     assert_equal [ConcernTest::Foo, ConcernTest::Bar, ConcernTest::Baz], @klass.included_modules[0..2]
   end
 

railties/lib/rails/commands/console.rb

@@ -79,7 +79,7 @@ module Rails
       end
 
       if defined?(console::ExtendCommandBundle)
-        console::ExtendCommandBundle.send :include, Rails::ConsoleMethods
+        console::ExtendCommandBundle.include(Rails::ConsoleMethods)
       end
       console.start
     end

railties/lib/rails/engine.rb

@@ -484,7 +484,7 @@ module Rails
         helpers = Module.new
         all = ActionController::Base.all_helpers_from_path(helpers_paths)
         ActionController::Base.modules_for_helpers(all).each do |mod|
-          helpers.send(:include, mod)
+          helpers.include(mod)
         end
         helpers
       end

railties/lib/rails/generators/app_base.rb

@@ -127,7 +127,7 @@ module Rails
       def builder
         @builder ||= begin
           builder_class = get_builder_class
-          builder_class.send(:include, ActionMethods)
+          builder_class.include(ActionMethods)
           builder_class.new(self)
         end
       end

railties/lib/rails/generators/resource_helpers.rb

@@ -8,7 +8,7 @@ module Rails
     module ResourceHelpers # :nodoc:
 
       def self.included(base) #:nodoc:
-        base.send :include, Rails::Generators::ModelHelpers
+        base.include(Rails::Generators::ModelHelpers)
         base.class_option :model_name, type: :string, desc: "ModelName to be used"
       end
 

railties/test/rails_info_controller_test.rb

@@ -16,7 +16,7 @@ class InfoControllerTest < ActionController::TestCase
     end
     @routes = Rails.application.routes
 
-    Rails::InfoController.send(:include, @routes.url_helpers)
+    Rails::InfoController.include(@routes.url_helpers)
 
     @request.env["REMOTE_ADDR"] = "127.0.0.1"
   end