link_test.go

func TestNickCollisionDuringLink(t *testing.T) {
	wg := &sync.WaitGroup{}
	tn, hubA := newTestNetwork(t, "hub.a", wg)

	hubB := tn.NewServer("hub.b")

	// Add 3 clients on A and the same 3 clients on B.
	// The first has an older timestamp on A, the last on B, and the middle
	// is tied.
	hubA.SetTS(1)
	hubB.SetTS(3)
	alphaA := hubA.NewClient("alpha")
	alphaB := hubB.NewClient("alpha")
	hubA.SetTS(2)
	hubB.SetTS(2)
	betaA := hubA.NewClient("beta")
	betaB := hubB.NewClient("beta")
	hubA.SetTS(3)
	hubB.SetTS(1)
	gammaA := hubA.NewClient("gamma")
	gammaB := hubB.NewClient("gamma")

	hubA.Link(hubB)

	tn.ExpectAll(alphaA.Exists())
	tn.ExpectAll(alphaB.Exists().Not())
	tn.ExpectAll(betaA.Exists().Not())
	tn.ExpectAll(betaB.Exists().Not())
	tn.ExpectAll(gammaA.Exists().Not())
	tn.ExpectAll(gammaB.Exists())

	tn.Shutdown()
	wg.Wait()
}