adding headers to a rspec get

Unfortunately, rspec doesn't allow to set request headers, so you'll need to workaround it like this:

  it "returns albums" do
    request.headers.merge!(authenticated_header("admin", "123"))
    get "/index", params: {}
    puts response.body
  end

If you get rid of the type: :controller and switch to using the named route photo_path instead of :index it accepts the :headers.