feat: Adds string func to nodeID (#40)

Author: gruyaume

ie/nodeId.go

@@ -55,6 +55,19 @@ func NewNodeID(nodeID string) (NodeID, error) {
 	}, nil
 }
 
+func (n NodeID) String() string {
+	switch n.Type {
+	case IPv4:
+		return net.IP(n.Value).To4().String()
+	case IPv6:
+		return net.IP(n.Value).To16().String()
+	case FQDN:
+		return string(n.Value)
+	default:
+		return ""
+	}
+}
+
 func (n NodeID) Serialize() []byte {
 	buf := new(bytes.Buffer)
 

ie/nodeId_test.go

@@ -38,6 +38,19 @@ func TestNewNodeIDIPv4(t *testing.T) {
 
 }
 
+func TestString(t *testing.T) {
+	nodeIDstring := "1.2.3.4"
+	nodeID, err := ie.NewNodeID(nodeIDstring)
+	if err != nil {
+		t.Fatalf("Expected no error, got %v", err)
+	}
+
+	if nodeID.String() != nodeIDstring {
+		t.Errorf("Expected NodeID string, got %s", nodeID.String())
+	}
+
+}
+
 func TestNewNodeIDIPv6(t *testing.T) {
 	nodeID, err := ie.NewNodeID("2001:db8::68")