BindPort:    6443,
		Required:    true,
		ServerCert: genericoptions.GeneratableKeyCert{
			PairName:      "apiserver",
			CertDirectory: "/var/run/kubernetes",
		},
	}
	return o.WithLoopback()

func TestEmptyMainCert(t *testing.T) {
	secureServingInfo := &server.SecureServingInfo{}
	var loopbackClientConfig *rest.Config

	s := (&SecureServingOptions{
		BindAddress: netutils.ParseIPSloppy("127.0.0.1"),
	}).WithLoopback()
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatalf("failed to listen on 127.0.0.1:0")
	}
	defer ln.Close()
	s.Listener = ln
	s.BindPort = ln.Addr().(*net.TCPAddr).Port

	netutils "k8s.io/utils/net"
)

func TestBuildGenericConfig(t *testing.T) {
	opts := options.NewOptions()
	s := (&apiserveroptions.SecureServingOptions{
		BindAddress: netutils.ParseIPSloppy("127.0.0.1"),
	}).WithLoopback()
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatalf("failed to listen on 127.0.0.1:0")
	}
	defer ln.Close()
	s.Listener = ln
	s.BindPort = ln.Addr().(*net.TCPAddr).Port

	sso.HTTP2MaxStreamsPerConnection = 1000

	return &RecommendedOptions{
		Etcd:           NewEtcdOptions(storagebackend.NewDefaultConfig(prefix, codec)),
		SecureServing:  sso.WithLoopback(),
		Authentication: NewDelegatingAuthenticationOptions(),
		Authorization:  NewDelegatingAuthorizationOptions(),
		Audit:          NewAuditOptions(),
		Features:       NewFeatureOptions(),