response := &authenticator.Response{User: &user.DefaultInfo{Name: "user", Groups: append(capacity, "original")}}
	orig := toJson(response)

	adder := authenticator.Request(
		NewGroupAdder(
			authenticator.RequestFunc(func(req *http.Request) (*authenticator.Response, bool, error) {
				return response, true, nil
			}),
			[]string{"added"},
		),
	)

	r, _, _ := adder.AuthenticateRequest(nil)

			done := make(chan struct{})
			auth := WithAuthentication(
				http.HandlerFunc(func(_ http.ResponseWriter, _ *http.Request) {
					close(done)
				}),
				authenticator.RequestFunc(func(_ *http.Request) (*authenticator.Response, bool, error) {
					return tt.response, tt.status, tt.err
				}),
				http.HandlerFunc(func(_ http.ResponseWriter, _ *http.Request) {
					close(done)
				}),