class GemHadar

def assert_valid_link(name, orig_url)
  developing and return orig_url
  url = orig_url
  begin
    response = Net::HTTP.get_response(URI.parse(url))
    url = response['location']
  end while response.is_a?(Net::HTTPRedirection)
  response.is_a?(Net::HTTPOK) or
    fail "#{orig_url.inspect} for #{name} has to be a valid link"
  orig_url
end