package main

import (
	"fmt"

	pov ".."
)

func main() {
	g := pov.New()
	g.AddNode("parent")
	g.AddArc("parent", "x")
	g.AddArc("x", "sib-2")
	g.AddArc("x", "sib-3")
	g.AddArc("x", "sib-4")
	g.AddArc("parent", "sibling")
	g.AddArc("sibling", "child-1")
	g.AddArc("sibling", "child-2")
	g.AddArc("sibling", "child-3")
	g.AddArc("child-3", "grandchild-1")
	g.AddArc("grandchild-1", "greatgrandchild-1")
	pov.PrintGraph(g)
	fmt.Println("== Change Root to child-3 ==")
	n := g.ChangeRoot("parent", "child-3")
	pov.PrintGraph(n)
}