//
	// Once all startup components have been run, starts a polling
	// loop to continue monitoring for new components and returns nil.
	Start(stop <-chan struct{}) error

	// RunComponent adds the given component to the server's run queue.
	RunComponent(name string, t Component)

	// RunComponentAsync runs the given component asynchronously.
	RunComponentAsync(name string, t Component)

	expected := errors.New("fake")
	inst.RunComponent("fake", func(stop <-chan struct{}) error {
		return expected
	})

	stop := newReclosableChannel()
	t.Cleanup(stop.Close)
	g.Expect(inst.Start(stop.c)).To(Equal(expected))
}

func TestStartWithNoError(t *testing.T) {
	g := NewWithT(t)

	inst := server.New()
	c := newFakeComponent(0, test.NewStop(t))
	inst.RunComponent("fake", c.Run)

	stop := newReclosableChannel()

		&IstioComponentBase{
			&CommonComponentFields{
				Options:       opts,
				ComponentName: name.ZtunnelComponentName,
			},
		},
	}
}

// runComponent performs startup tasks for the component defined by the given CommonComponentFields.
func runComponent(c *CommonComponentFields) error {
	r := createHelmRenderer(c)
	if err := r.Run(); err != nil {
		return err
	}
	c.renderer = r
	c.started = true

// so the function should start a go routine if it needs to do anything blocking
func (s *Server) addStartFunc(name string, fn server.Component) {
	s.server.RunComponent(name, fn)
}

// adds a readiness probe for Istiod Server.
func (s *Server) addReadinessProbe(name string, fn readinessProbe) {
	s.readinessProbes[name] = fn
}