multi: fix linter errors

autopilot/graph.go

@@ -3,6 +3,7 @@ package autopilot
 import (
 	"bytes"
 	"encoding/hex"
+	"errors"
 	"net"
 	"sort"
 	"sync/atomic"
@@ -134,7 +135,9 @@ func (d *dbNode) ForEachChannel(cb func(ChannelEdge) error) error {
 //
 // NOTE: Part of the autopilot.ChannelGraph interface.
 func (d *databaseChannelGraph) ForEachNode(cb func(Node) error) error {
-	return d.db.ForEachNode(func(tx kvdb.RTx, n *models.LightningNode) error {
+	return d.db.ForEachNode(func(tx kvdb.RTx,
+		n *models.LightningNode) error {
+
 		// We'll skip over any node that doesn't have any advertised
 		// addresses. As we won't be able to reach them to actually
 		// open any channels.
@@ -168,9 +171,9 @@ func (d *databaseChannelGraph) addRandChannel(node1, node2 *btcec.PublicKey,
 
 			dbNode, err := d.db.FetchLightningNode(vertex)
 			switch {
-			case err == graphdb.ErrGraphNodeNotFound:
+			case errors.Is(err, graphdb.ErrGraphNodeNotFound):
 				fallthrough
-			case err == graphdb.ErrGraphNotFound:
+			case errors.Is(err, graphdb.ErrGraphNotFound):
 				graphNode := &models.LightningNode{
 					HaveNodeAnnouncement: true,
 					Addresses: []net.Addr{

channeldb/db_test.go

@@ -734,7 +734,7 @@ func createLightningNode(priv *btcec.PrivateKey) *models.LightningNode {
 		AuthSigBytes:         testSig.Serialize(),
 		LastUpdate:           time.Unix(updateTime, 0),
 		Color:                color.RGBA{1, 2, 3, 0},
-		Alias:                "kek" + string(pub[:]),
+		Alias:                "kek" + string(pub),
 		Features:             testFeatures,
 		Addresses:            testAddrs,
 	}

discovery/gossiper.go

@@ -1685,7 +1685,7 @@ func (d *AuthenticatedGossiper) retransmitStaleAnns(now time.Time) error {
 
 		return nil
 	})
-	if err != nil && err != graphdb.ErrGraphNoEdgesFound {
+	if err != nil && !errors.Is(err, graphdb.ErrGraphNoEdgesFound) {
 		return fmt.Errorf("unable to retrieve outgoing channels: %w",
 			err)
 	}

discovery/gossiper_test.go

@@ -202,7 +202,9 @@ func (r *mockGraphSource) AddProof(chanID lnwire.ShortChannelID,
 	return nil
 }
 
-func (r *mockGraphSource) ForEachNode(func(node *models.LightningNode) error) error {
+func (r *mockGraphSource) ForEachNode(
+	func(node *models.LightningNode) error) error {
+
 	return nil
 }
 
@@ -2318,9 +2320,7 @@ func TestProcessZombieEdgeNowLive(t *testing.T) {
 
 	// At this point, the channel should still be considered a zombie.
 	_, _, _, err = ctx.router.GetChannelByID(chanID)
-	if err != graphdb.ErrZombieEdge {
-		t.Fatalf("channel should still be a zombie")
-	}
+	require.ErrorIs(t, err, graphdb.ErrZombieEdge)
 
 	// Attempting to process the current channel update should fail due to
 	// its edge being considered a zombie and its timestamp not being within
@@ -2441,7 +2441,7 @@ func TestReceiveRemoteChannelUpdateFirst(t *testing.T) {
 	// to the map of premature ChannelUpdates. Check that nothing
 	// was added to the graph.
 	chanInfo, e1, e2, err := ctx.router.GetChannelByID(batch.chanUpdAnn1.ShortChannelID)
-	if err != graphdb.ErrEdgeNotFound {
+	if !errors.Is(err, graphdb.ErrEdgeNotFound) {
 		t.Fatalf("Expected ErrEdgeNotFound, got: %v", err)
 	}
 	if chanInfo != nil {