This document defines a Puppet class called "app" that includes classes for development packages and Ruby. It checks that port 80 is listening and that the app server returns a response including the word "Hello" when requesting the HTTP URL.

23. class app {
include ::base
include app::dev_packages
include app::ruby
Class['App::Dev_packages']
-> Class['App::Ruby']
}

24. describe port(80) do
it { should be_listening }
end

25. describe server(:app) do
describe http('http://app') do
it "responds content including 'Hello'" do
expect(response.body).to include('Hello')
end
end
end