helper_method

# File actionview/lib/action_view/test_case.rb, line 219
        def helper_method(*methods)
          # Almost a duplicate from ActionController::Helpers
          methods.flatten.each do |method|
            _helpers_for_modification.module_eval <<~end_eval, __FILE__, __LINE__ + 1
              def #{method}(...)                    # def current_user(...)
                _test_case.send(:'#{method}', ...)  #   _test_case.send(:'current_user', ...)
              end                                   # end
            end_eval
          end
        end