# frozen_string_literal: true require "abstract_unit" class PeopleController < ActionController::Base def create render plain: params[:person].permitted? ? "permitted" : "forbidden" end def create_with_permit render plain: params[:person].permit(:name).permitted? ? "permitted" : "forbidden" end end class ActionControllerPermittedParamsTest < ActionController::TestCase tests PeopleController test "parameters are forbidden" do post :create, params: { person: { name: "Mjallo!" } } assert_equal "forbidden", response.body end test "parameters can be permitted and are then not forbidden" do post :create_with_permit, params: { person: { name: "Mjallo!" } } assert_equal "permitted", response.body end end