# File tests/common.rb, line 209
  def require_authentication?(uri)
    # We need to make sure we don't have both API_USER and API_PASSWORD
    # set in the environment; otherwise LazyAuth will use those instead
    # of asking for credentials
    api_user = ENV.delete("API_USER")
    get uri, {}
    ENV["API_USER"] = api_user
    last_response.status == 401
  end