Add assert_select tests to the new base

actionpack/Rakefile

@@ -66,7 +66,7 @@ Rake::TestTask.new(:test_new_base_on_old_tests) do |t|
     render render_json render_xml
     send_file request_forgery_protection rescue url_rewriter verification webservice
     http_basic_authentication http_digest_authentication
-    action_pack_assertions
+    action_pack_assertions assert_select
   ).map { |name| "test/controller/#{name}_test.rb" }
 end