blah.go

// Compare two hierarchy graphs, useful for tests. Traverse both
// graphs and calculate an md5 based on the employee ID. If
// compareName is true, use the employee name instead
func CompareGraphs(g1 *Node, g2 *Node, compareName ...bool) bool {
	compName := false
	if len(compareName) == 1 {
		compName = compareName[0]
	}
	hash1 := md5.New()
	hash2 := md5.New()
	// Traverse first graph
	traverseGraph(g1, nil, func(n *Node, parent *Node) bool {
		s := n.Employee.ID
		if compName {
			s = n.Employee.Name
		}
		io.WriteString(hash1, s)
		return true
	})
	// Traverse second graph
	traverseGraph(g2, nil, func(n *Node, parent *Node) bool {
		s := n.Employee.ID
		if compName {
			s = n.Employee.Name
		}
		io.WriteString(hash2, s)
		return true
	})
	res1 := fmt.Sprintf("%x", hash1.Sum(nil))
	res2 := fmt.Sprintf("%x", hash2.Sum(nil))
	return  res1 == res2
}