所需文件
- rack/session/abstract/id
- active_support/core_ext/hash/conversions
- active_support/core_ext/object/to_query
- active_support/core_ext/module/anonymous
- active_support/core_ext/module/redefine_method
- active_support/core_ext/hash/keys
- active_support/testing/constant_lookup
- action_controller/template_assertions
- rails-dom-testing
命名空间