Take --skip-activerecord into account boot.rb requires. [#3711 status:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>

railties/lib/rails/generators/rails/app/app_generator.rb

@@ -87,7 +87,7 @@ module Rails::Generators
     end
 
     def create_boot_file
-      copy_file "config/boot.rb"
+      template "config/boot.rb"
     end
 
     def create_activerecord_files

railties/lib/rails/generators/rails/app/templates/config/boot.rb

@@ -13,7 +13,9 @@ else
   require 'rubygems'
 end
 
+<% unless  options[:skip_activerecord] -%>
 require 'rails/all'
+
 # To pick the frameworks you want, remove 'require "rails/all"'
 # and list the framework railties that you want:
 #
@@ -23,3 +25,12 @@ require 'rails/all'
 # require "action_view/railtie"
 # require "action_mailer/railtie"
 # require "active_resource/railtie"
+<% else  -%>
+# Pick the frameworks you want:
+# require "active_record/railtie"
+require "active_model/railtie"
+require "action_controller/railtie"
+require "action_view/railtie"
+require "action_mailer/railtie"
+require "active_resource/railtie"
+<% end  -%>

railties/test/generators/app_generator_test.rb

@@ -80,11 +80,10 @@ class AppGeneratorTest < GeneratorsTestCase
     assert_no_file "config/database.yml"
   end
 
-  # TODO: Bring this back using requires
-  # def test_activerecord_is_removed_from_frameworks_if_skip_activerecord_is_given
-  #   run_generator ["--skip-activerecord"]
-  #   assert_file "config/application.rb", /config\.frameworks \-= \[ :active_record \]/
-  # end
+  def test_activerecord_is_removed_from_frameworks_if_skip_activerecord_is_given
+    run_generator [destination_root, "--skip-activerecord"]
+    assert_file "config/boot.rb", /# require "active_record\/railtie"/
+  end
 
   def test_prototype_and_test_unit_are_added_by_default
     run_generator