require 'abstract_unit' require 'action_controller/metal/strong_parameters' class LogOnUnpermittedParamsTest < ActiveSupport::TestCase def setup ActionController::Parameters.action_on_unpermitted_parameters = :log end def teardown ActionController::Parameters.action_on_unpermitted_parameters = false end test "logs on unexpected param" do params = ActionController::Parameters.new({ book: { pages: 65 }, fishing: "Turnips" }) assert_logged("Unpermitted parameter: fishing") do params.permit(book: [:pages]) end end test "logs on unexpected params" do params = ActionController::Parameters.new({ book: { pages: 65 }, fishing: "Turnips", car: "Mersedes" }) assert_logged("Unpermitted parameters: fishing, car") do params.permit(book: [:pages]) end end test "logs on unexpected nested param" do params = ActionController::Parameters.new({ book: { pages: 65, title: "Green Cats and where to find then." } }) assert_logged("Unpermitted parameter: title") do params.permit(book: [:pages]) end end test "logs on unexpected nested params" do params = ActionController::Parameters.new({ book: { pages: 65, title: "Green Cats and where to find then.", author: "G. A. Dog" } }) assert_logged("Unpermitted parameters: title, author") do params.permit(book: [:pages]) end end private def assert_logged(message) old_logger = ActionController::Base.logger log = StringIO.new ActionController::Base.logger = Logger.new(log) begin yield log.rewind assert_match message, log.read ensure ActionController::Base.logger = old_logger end end end