package routing import ( "testing" "github.com/lightningnetwork/lnd/channeldb" "github.com/lightningnetwork/lnd/lnwire" "github.com/lightningnetwork/lnd/routing/route" ) func TestRequestRoute(t *testing.T) { const ( height = 10 ) cltvLimit := uint32(30) finalCltvDelta := uint16(8) payment := &LightningPayment{ CltvLimit: cltvLimit, FinalCLTVDelta: finalCltvDelta, Amount: 1000, FeeLimit: 1000, } session, err := newPaymentSession( payment, func() (map[uint64]lnwire.MilliSatoshi, error) { return nil, nil }, func() (routingGraph, func(), error) { return &sessionGraph{}, func() {}, nil }, &MissionControl{}, PathFindingConfig{}, ) if err != nil { t.Fatal(err) } // Override pathfinder with a mock. session.pathFinder = func( g *graphParams, r *RestrictParams, cfg *PathFindingConfig, source, target route.Vertex, amt lnwire.MilliSatoshi, finalHtlcExpiry int32) ([]*channeldb.ChannelEdgePolicy, error) { // We expect find path to receive a cltv limit excluding the // final cltv delta (including the block padding). if r.CltvLimit != 22-uint32(BlockPadding) { t.Fatal("wrong cltv limit") } path := []*channeldb.ChannelEdgePolicy{ { Node: &channeldb.LightningNode{ Features: lnwire.NewFeatureVector( nil, nil, ), }, }, } return path, nil } route, err := session.RequestRoute( payment.Amount, payment.FeeLimit, 0, height, ) if err != nil { t.Fatal(err) } // We expect an absolute route lock value of height + finalCltvDelta // + BlockPadding. if route.TotalTimeLock != 18+uint32(BlockPadding) { t.Fatalf("unexpected total time lock of %v", route.TotalTimeLock) } } type sessionGraph struct { routingGraph } func (g *sessionGraph) sourceNode() route.Vertex { return route.Vertex{} }