require 'abstract_unit' class EngineTest < ActiveSupport::TestCase test "reports routes as available only if they're actually present" do engine = Class.new(Rails::Engine) do def initialize(*args) @routes = nil super end end assert !engine.routes? end def test_application_can_be_subclassed klass = Class.new(Rails::Application) do attr_reader :hello def initialize @hello = "world" super end end assert_equal "world", klass.instance.hello end end