add peer info after FindPeer RPC

fix ping test

core/commands/ping.go

@@ -110,6 +110,7 @@ send pings, wait for pongs, and print out round-trip latency information.
 			}
 			ctx, _ := context.WithTimeout(context.Background(), kPingTimeout)
 			p, err := n.Routing.FindPeer(ctx, peerID)
+			n.Peerstore.AddPeerInfo(p)
 			if err != nil {
 				outChan <- &PingResult{Text: "Peer lookup error!"}
 				outChan <- &PingResult{Text: err.Error()}

routing/dht/dht_test.go

@@ -116,12 +116,12 @@ func TestPing(t *testing.T) {
 
 	//Test that we can ping the node
 	ctxT, _ := context.WithTimeout(ctx, 100*time.Millisecond)
-	if err := dhtA.Ping(ctxT, peerB); err != nil {
+	if _, err := dhtA.Ping(ctxT, peerB); err != nil {
 		t.Fatal(err)
 	}
 
 	ctxT, _ = context.WithTimeout(ctx, 100*time.Millisecond)
-	if err := dhtB.Ping(ctxT, peerA); err != nil {
+	if _, err := dhtB.Ping(ctxT, peerA); err != nil {
 		t.Fatal(err)
 	}
 }