require 'spec_helper' describe ContinueParams do let(:controller_class) do Class.new(ActionController::Base) do include ContinueParams def request @request ||= Struct.new(:host, :port).new('test.host', 80) end end end subject(:controller) { controller_class.new } def strong_continue_params(params) ActionController::Parameters.new(continue: params) end it 'cleans up any params that are not allowed' do allow(controller).to receive(:params) do strong_continue_params(to: '/hello', notice: 'world', notice_now: '!', something: 'else') end expect(controller.continue_params.keys).to contain_exactly(*%w(to notice notice_now)) end it 'does not allow cross host redirection' do allow(controller).to receive(:params) do strong_continue_params(to: '//example.com') end expect(controller.continue_params[:to]).to be_nil end it 'allows redirecting to a path with querystring' do allow(controller).to receive(:params) do strong_continue_params(to: '/hello/world?query=string') end expect(controller.continue_params[:to]).to eq('/hello/world?query=string') end end