multi: refactor testUpdateChannelPolicy

lntemp/harness.go

@@ -1321,3 +1321,26 @@ func (h *HarnessTest) QueryChannelByChanPoint(hn *node.HarnessNode,
 	require.NoError(h, err, "failed to query channel")
 	return channel
 }
+
+// SendPaymentAndAssertStatus sends a payment from the passed node and asserts
+// the desired status is reached.
+func (h *HarnessTest) SendPaymentAndAssertStatus(hn *node.HarnessNode,
+	req *routerrpc.SendPaymentRequest,
+	status lnrpc.Payment_PaymentStatus) *lnrpc.Payment {
+
+	stream := hn.RPC.SendPayment(req)
+	return h.AssertPaymentStatusFromStream(stream, status)
+}
+
+// SendPaymentAssertFail sends a payment from the passed node and asserts the
+// payment is failed with the specified failure reason .
+func (h *HarnessTest) SendPaymentAssertFail(hn *node.HarnessNode,
+	req *routerrpc.SendPaymentRequest,
+	reason lnrpc.PaymentFailureReason) *lnrpc.Payment {
+
+	payment := h.SendPaymentAndAssertStatus(hn, req, lnrpc.Payment_FAILED)
+	require.Equal(h, reason, payment.FailureReason,
+		"payment failureReason not matched")
+
+	return payment
+}

lntemp/harness_assertion.go

@@ -1503,3 +1503,44 @@ func (h *HarnessTest) AssertTxAtHeight(hn *node.HarnessNode, height int32,
 
 	return nil
 }
+
+// getChannelPolicies queries the channel graph and retrieves the current edge
+// policies for the provided channel point.
+func (h *HarnessTest) getChannelPolicies(hn *node.HarnessNode,
+	advertisingNode string,
+	cp *lnrpc.ChannelPoint) (*lnrpc.RoutingPolicy, error) {
+
+	req := &lnrpc.ChannelGraphRequest{IncludeUnannounced: true}
+	chanGraph := hn.RPC.DescribeGraph(req)
+
+	cpStr := channelPointStr(cp)
+	for _, e := range chanGraph.Edges {
+		if e.ChanPoint != cpStr {
+			continue
+		}
+
+		if e.Node1Pub == advertisingNode {
+			return e.Node1Policy, nil
+		}
+
+		return e.Node2Policy, nil
+	}
+
+	// If we've iterated over all the known edges and we weren't
+	// able to find this specific one, then we'll fail.
+	return nil, fmt.Errorf("did not find edge with advertisingNode: %s"+
+		", channel point: %s", advertisingNode, cpStr)
+}
+
+// AssertChannelPolicy asserts that the passed node's known channel policy for
+// the passed chanPoint is consistent with the expected policy values.
+func (h *HarnessTest) AssertChannelPolicy(hn *node.HarnessNode,
+	advertisingNode string, expectedPolicy *lnrpc.RoutingPolicy,
+	chanPoint *lnrpc.ChannelPoint) {
+
+	policy, err := h.getChannelPolicies(hn, advertisingNode, chanPoint)
+	require.NoErrorf(h, err, "%s: failed to find policy", hn.Name())
+
+	err = node.CheckChannelPolicy(policy, expectedPolicy)
+	require.NoErrorf(h, err, "%s: check policy failed", hn.Name())
+}

lntemp/node/watcher.go

@@ -559,7 +559,7 @@ func (nw *nodeWatcher) handlePolicyUpdateWatchRequest(req *chanWatchRequest) {
 
 	// Check if the latest policy is matched.
 	policy := policies[len(policies)-1]
-	if checkChannelPolicy(policy.RoutingPolicy, req.policy) == nil {
+	if CheckChannelPolicy(policy.RoutingPolicy, req.policy) == nil {
 		close(req.eventChan)
 		return
 	}
@@ -653,8 +653,8 @@ func (nw *nodeWatcher) getChannelPolicies(include bool) policyUpdateMap {
 	return policyUpdates
 }
 
-// checkChannelPolicy checks that the policy matches the expected one.
-func checkChannelPolicy(policy, expectedPolicy *lnrpc.RoutingPolicy) error {
+// CheckChannelPolicy checks that the policy matches the expected one.
+func CheckChannelPolicy(policy, expectedPolicy *lnrpc.RoutingPolicy) error {
 	if policy.FeeBaseMsat != expectedPolicy.FeeBaseMsat {
 		return fmt.Errorf("expected base fee %v, got %v",
 			expectedPolicy.FeeBaseMsat, policy.FeeBaseMsat)

lntemp/rpc/lnd.go

@@ -432,3 +432,53 @@ func (h *HarnessRPC) BatchOpenChannelAssertErr(
 
 	return err
 }
+
+// QueryRoutes makes a RPC call to QueryRoutes and asserts.
+func (h *HarnessRPC) QueryRoutes(
+	req *lnrpc.QueryRoutesRequest) *lnrpc.QueryRoutesResponse {
+
+	ctxt, cancel := context.WithTimeout(h.runCtx, DefaultTimeout)
+	defer cancel()
+
+	routes, err := h.LN.QueryRoutes(ctxt, req)
+	require.NoErrorf(h, err, "failed to query routes")
+
+	return routes
+}
+
+// SendToRoute makes a RPC call to SendToRoute and asserts.
+func (h *HarnessRPC) SendToRoute() lnrpc.Lightning_SendToRouteClient {
+	// SendToRoute needs to have the context alive for the entire test case
+	// as the returned client will be used for send and receive payment
+	// stream. Thus we use runCtx here instead of a timeout context.
+	client, err := h.LN.SendToRoute(h.runCtx)
+	h.NoError(err, "SendToRoute")
+
+	return client
+}
+
+// SendToRouteSync makes a RPC call to SendToRouteSync and asserts.
+func (h *HarnessRPC) SendToRouteSync(
+	req *lnrpc.SendToRouteRequest) *lnrpc.SendResponse {
+
+	ctxt, cancel := context.WithTimeout(h.runCtx, DefaultTimeout)
+	defer cancel()
+
+	resp, err := h.LN.SendToRouteSync(ctxt, req)
+	require.NoErrorf(h, err, "unable to send to route for %s", h.Name)
+
+	return resp
+}
+
+// UpdateChannelPolicy makes a RPC call to UpdateChannelPolicy and asserts.
+func (h *HarnessRPC) UpdateChannelPolicy(
+	req *lnrpc.PolicyUpdateRequest) *lnrpc.PolicyUpdateResponse {
+
+	ctxt, cancel := context.WithTimeout(h.runCtx, DefaultTimeout)
+	defer cancel()
+
+	resp, err := h.LN.UpdateChannelPolicy(ctxt, req)
+	require.NoErrorf(h, err, "failed to update policy")
+
+	return resp
+}

lntemp/utils.go

@@ -8,6 +8,7 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/btcsuite/btcd/wire"
 	"github.com/lightningnetwork/lnd/lnrpc"
 	"github.com/lightningnetwork/lnd/lntest"
 )
@@ -106,3 +107,18 @@ func ChanPointFromPendingUpdate(pu *lnrpc.PendingUpdate) *lnrpc.ChannelPoint {
 
 	return chanPoint
 }
+
+// channelPointStr returns the string representation of the channel's
+// funding transaction.
+func channelPointStr(chanPoint *lnrpc.ChannelPoint) string {
+	fundingTxID, err := lnrpc.GetChanPointFundingTxid(chanPoint)
+	if err != nil {
+		return ""
+	}
+	cp := wire.OutPoint{
+		Hash:  *fundingTxID,
+		Index: chanPoint.OutputIndex,
+	}
+
+	return cp.String()
+}

lntest/itest/list_on_test.go

@@ -135,4 +135,8 @@ var allTestCasesTemp = []*lntemp.TestCase{
 		Name:     "batch channel funding",
 		TestFunc: testBatchChanFunding,
 	},
+	{
+		Name:     "update channel policy",
+		TestFunc: testUpdateChannelPolicy,
+	},
 }

lntest/itest/lnd_channel_policy_test.go

@@ -3,7 +3,6 @@ package itest
 import (
 	"context"
 	"math"
-	"strings"
 	"time"
 
 	"github.com/btcsuite/btcd/btcutil"
@@ -11,6 +10,9 @@ import (
 	"github.com/lightningnetwork/lnd/chainreg"
 	"github.com/lightningnetwork/lnd/funding"
 	"github.com/lightningnetwork/lnd/lnrpc"
+	"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
+	"github.com/lightningnetwork/lnd/lntemp"
+	"github.com/lightningnetwork/lnd/lntemp/node"
 	"github.com/lightningnetwork/lnd/lntest"
 	"github.com/lightningnetwork/lnd/lnwire"
 	"github.com/stretchr/testify/require"
@@ -18,6 +20,7 @@ import (
 
 // assertPolicyUpdate checks that a given policy update has been received by a
 // list of given nodes.
+// TODO(yy): delete.
 func assertPolicyUpdate(t *harnessTest, nodes []*lntest.HarnessNode,
 	advertisingNode string, policy *lnrpc.RoutingPolicy,
 	chanPoint *lnrpc.ChannelPoint) {
@@ -30,10 +33,8 @@ func assertPolicyUpdate(t *harnessTest, nodes []*lntest.HarnessNode,
 }
 
 // testUpdateChannelPolicy tests that policy updates made to a channel
-// get propagated to other nodes in the network.
-func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
-	ctxb := context.Background()
-
+// gets propagated to other nodes in the network.
+func testUpdateChannelPolicy(ht *lntemp.HarnessTest) {
 	const (
 		defaultFeeBase       = 1000
 		defaultFeeRate       = 1
@@ -45,19 +46,19 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 	chanAmt := funding.MaxBtcFundingAmount
 	pushAmt := chanAmt / 2
 
+	alice, bob := ht.Alice, ht.Bob
+
 	// Create a channel Alice->Bob.
-	chanPoint := openChannelAndAssert(
-		t, net, net.Alice, net.Bob,
-		lntest.OpenChannelParams{
+	chanPoint := ht.OpenChannel(
+		alice, bob, lntemp.OpenChannelParams{
 			Amt:     chanAmt,
 			PushAmt: pushAmt,
 		},
 	)
-	defer closeChannelAndAssert(t, net, net.Alice, chanPoint, false)
 
 	// We add all the nodes' update channels to a slice, such that we can
 	// make sure they all receive the expected updates.
-	nodes := []*lntest.HarnessNode{net.Alice, net.Bob}
+	nodes := []*node.HarnessNode{alice, bob}
 
 	// Alice and Bob should see each other's ChannelUpdates, advertising the
 	// default routing policies.
@@ -69,65 +70,45 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 		MaxHtlcMsat:      defaultMaxHtlc,
 	}
 
-	assertPolicyUpdate(
-		t, nodes, net.Alice.PubKeyStr, expectedPolicy, chanPoint,
-	)
-	assertPolicyUpdate(
-		t, nodes, net.Bob.PubKeyStr, expectedPolicy, chanPoint,
-	)
+	assertNodesPolicyUpdate(ht, nodes, alice, expectedPolicy, chanPoint)
+	assertNodesPolicyUpdate(ht, nodes, bob, expectedPolicy, chanPoint)
 
 	// They should now know about the default policies.
 	for _, node := range nodes {
-		assertChannelPolicy(
-			t, node, net.Alice.PubKeyStr, expectedPolicy, chanPoint,
+		ht.AssertChannelPolicy(
+			node, alice.PubKeyStr, expectedPolicy, chanPoint,
 		)
-		assertChannelPolicy(
-			t, node, net.Bob.PubKeyStr, expectedPolicy, chanPoint,
+		ht.AssertChannelPolicy(
+			node, bob.PubKeyStr, expectedPolicy, chanPoint,
 		)
 	}
 
-	err := net.Alice.WaitForNetworkChannelOpen(chanPoint)
-	if err != nil {
-		t.Fatalf("alice didn't report channel: %v", err)
-	}
-	err = net.Bob.WaitForNetworkChannelOpen(chanPoint)
-	if err != nil {
-		t.Fatalf("bob didn't report channel: %v", err)
-	}
-
 	// Create Carol with options to rate limit channel updates up to 2 per
 	// day, and create a new channel Bob->Carol.
-	carol := net.NewNode(
-		t.t, "Carol", []string{
+	carol := ht.NewNode(
+		"Carol", []string{
 			"--gossip.max-channel-update-burst=2",
 			"--gossip.channel-update-interval=24h",
 		},
 	)
-
-	// Clean up carol's node when the test finishes.
-	defer shutdownAndAssert(net, t, carol)
-
+	ht.ConnectNodes(carol, bob)
 	nodes = append(nodes, carol)
 
 	// Send some coins to Carol that can be used for channel funding.
-	net.SendCoins(t.t, btcutil.SatoshiPerBitcoin, carol)
-
-	net.ConnectNodes(t.t, carol, net.Bob)
+	ht.FundCoins(btcutil.SatoshiPerBitcoin, carol)
 
 	// Open the channel Carol->Bob with a custom min_htlc value set. Since
 	// Carol is opening the channel, she will require Bob to not forward
 	// HTLCs smaller than this value, and hence he should advertise it as
 	// part of his ChannelUpdate.
 	const customMinHtlc = 5000
-	chanPoint2 := openChannelAndAssert(
-		t, net, carol, net.Bob,
-		lntest.OpenChannelParams{
+	chanPoint2 := ht.OpenChannel(
+		carol, bob, lntemp.OpenChannelParams{
 			Amt:     chanAmt,
 			PushAmt: pushAmt,
 			MinHtlc: customMinHtlc,
 		},
 	)
-	defer closeChannelAndAssert(t, net, net.Bob, chanPoint2, false)
 
 	expectedPolicyBob := &lnrpc.RoutingPolicy{
 		FeeBaseMsat:      defaultFeeBase,
@@ -144,37 +125,24 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 		MaxHtlcMsat:      defaultMaxHtlc,
 	}
 
-	assertPolicyUpdate(
-		t, nodes, net.Bob.PubKeyStr, expectedPolicyBob, chanPoint2,
-	)
-	assertPolicyUpdate(
-		t, nodes, carol.PubKeyStr, expectedPolicyCarol, chanPoint2,
+	assertNodesPolicyUpdate(ht, nodes, bob, expectedPolicyBob, chanPoint2)
+	assertNodesPolicyUpdate(
+		ht, nodes, carol, expectedPolicyCarol, chanPoint2,
 	)
 
 	// Check that all nodes now know about the updated policies.
 	for _, node := range nodes {
-		assertChannelPolicy(
-			t, node, net.Bob.PubKeyStr, expectedPolicyBob,
-			chanPoint2,
+		ht.AssertChannelPolicy(
+			node, bob.PubKeyStr, expectedPolicyBob, chanPoint2,
 		)
-		assertChannelPolicy(
-			t, node, carol.PubKeyStr, expectedPolicyCarol,
-			chanPoint2,
+		ht.AssertChannelPolicy(
+			node, carol.PubKeyStr, expectedPolicyCarol, chanPoint2,
 		)
 	}
 
-	err = net.Alice.WaitForNetworkChannelOpen(chanPoint2)
-	if err != nil {
-		t.Fatalf("alice didn't report channel: %v", err)
-	}
-	err = net.Bob.WaitForNetworkChannelOpen(chanPoint2)
-	if err != nil {
-		t.Fatalf("bob didn't report channel: %v", err)
-	}
-	err = carol.WaitForNetworkChannelOpen(chanPoint2)
-	if err != nil {
-		t.Fatalf("carol didn't report channel: %v", err)
-	}
+	// Make sure Alice and Carol have seen each other's channels.
+	ht.AssertTopologyChannelOpen(alice, chanPoint2)
+	ht.AssertTopologyChannelOpen(carol, chanPoint)
 
 	// First we'll try to send a payment from Alice to Carol with an amount
 	// less than the min_htlc value required by Carol. This payment should
@@ -184,23 +152,19 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 		Memo:  "testing",
 		Value: int64(payAmt),
 	}
-	ctxt, _ := context.WithTimeout(ctxb, defaultTimeout)
-	resp, err := carol.AddInvoice(ctxt, invoice)
-	if err != nil {
-		t.Fatalf("unable to add invoice: %v", err)
-	}
-
-	err = completePaymentRequests(
-		net.Alice, net.Alice.RouterClient,
-		[]string{resp.PaymentRequest}, true,
-	)
+	resp := carol.RPC.AddInvoice(invoice)
 
 	// Alice knows about the channel policy of Carol and should therefore
 	// not be able to find a path during routing.
-	expErr := lnrpc.PaymentFailureReason_FAILURE_REASON_NO_ROUTE
-	if err.Error() != expErr.String() {
-		t.Fatalf("expected %v, instead got %v", expErr, err)
+	payReq := &routerrpc.SendPaymentRequest{
+		PaymentRequest: resp.PaymentRequest,
+		TimeoutSeconds: 60,
+		FeeLimitMsat:   noFeeLimitMsat,
 	}
+	ht.SendPaymentAssertFail(
+		alice, payReq,
+		lnrpc.PaymentFailureReason_FAILURE_REASON_NO_ROUTE,
+	)
 
 	// Now we try to send a payment over the channel with a value too low
 	// to be accepted. First we query for a route to route a payment of
@@ -211,16 +175,8 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 		Amt:            int64(payAmt),
 		FinalCltvDelta: defaultTimeLockDelta,
 	}
-
-	ctxt, _ = context.WithTimeout(ctxb, defaultTimeout)
-	routes, err := net.Alice.QueryRoutes(ctxt, routesReq)
-	if err != nil {
-		t.Fatalf("unable to get route: %v", err)
-	}
-
-	if len(routes.Routes) != 1 {
-		t.Fatalf("expected to find 1 route, got %v", len(routes.Routes))
-	}
+	routes := alice.RPC.QueryRoutes(routesReq)
+	require.Len(ht, routes.Routes, 1)
 
 	// We change the route to carry a payment of 4000 mSAT instead of 5000
 	// mSAT.
@@ -233,27 +189,19 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 	routes.Routes[0].Hops[1].AmtToForwardMsat = amtMSat
 
 	// Send the payment with the modified value.
-	ctxt, _ = context.WithTimeout(ctxb, defaultTimeout)
-	alicePayStream, err := net.Alice.SendToRoute(ctxt) // nolint:staticcheck
-	if err != nil {
-		t.Fatalf("unable to create payment stream for alice: %v", err)
-	}
+	alicePayStream := alice.RPC.SendToRoute()
+
 	sendReq := &lnrpc.SendToRouteRequest{
 		PaymentHash: resp.RHash,
 		Route:       routes.Routes[0],
 	}
-
-	err = alicePayStream.Send(sendReq)
-	if err != nil {
-		t.Fatalf("unable to send payment: %v", err)
-	}
+	err := alicePayStream.Send(sendReq)
+	require.NoError(ht, err, "unable to send payment")
 
 	// We expect this payment to fail, and that the min_htlc value is
 	// communicated back to us, since the attempted HTLC value was too low.
 	sendResp, err := alicePayStream.Recv()
-	if err != nil {
-		t.Fatalf("unable to send payment: %v", err)
-	}
+	require.NoError(ht, err, "unable to receive payment stream")
 
 	// Expected as part of the error message.
 	substrs := []string{
@@ -261,10 +209,7 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 		"HtlcMinimumMsat: (lnwire.MilliSatoshi) 5000 mSAT",
 	}
 	for _, s := range substrs {
-		if !strings.Contains(sendResp.PaymentError, s) {
-			t.Fatalf("expected error to contain \"%v\", instead "+
-				"got %v", s, sendResp.PaymentError)
-		}
+		require.Contains(ht, sendResp.PaymentError, s)
 	}
 
 	// Make sure sending using the original value succeeds.
@@ -292,22 +237,14 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 	}
 
 	err = alicePayStream.Send(sendReq)
-	if err != nil {
-		t.Fatalf("unable to send payment: %v", err)
-	}
+	require.NoError(ht, err, "unable to send payment")
 
 	sendResp, err = alicePayStream.Recv()
-	if err != nil {
-		t.Fatalf("unable to send payment: %v", err)
-	}
+	require.NoError(ht, err, "unable to receive payment stream")
+	require.Empty(ht, sendResp.PaymentError, "expected payment to succeed")
 
-	if sendResp.PaymentError != "" {
-		t.Fatalf("expected payment to succeed, instead got %v",
-			sendResp.PaymentError)
-	}
-
-	// With our little cluster set up, we'll update the fees and the max htlc
-	// size for the Bob side of the Alice->Bob channel, and make sure
+	// With our little cluster set up, we'll update the fees and the max
+	// htlc size for the Bob side of the Alice->Bob channel, and make sure
 	// all nodes learn about it.
 	baseFee := int64(1500)
 	feeRate := int64(12)
@@ -331,21 +268,15 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 			ChanPoint: chanPoint,
 		},
 	}
-
-	ctxt, _ = context.WithTimeout(ctxb, defaultTimeout)
-	if _, err := net.Bob.UpdateChannelPolicy(ctxt, req); err != nil {
-		t.Fatalf("unable to get alice's balance: %v", err)
-	}
+	bob.RPC.UpdateChannelPolicy(req)
 
 	// Wait for all nodes to have seen the policy update done by Bob.
-	assertPolicyUpdate(
-		t, nodes, net.Bob.PubKeyStr, expectedPolicy, chanPoint,
-	)
+	assertNodesPolicyUpdate(ht, nodes, bob, expectedPolicy, chanPoint)
 
 	// Check that all nodes now know about Bob's updated policy.
 	for _, node := range nodes {
-		assertChannelPolicy(
-			t, node, net.Bob.PubKeyStr, expectedPolicy, chanPoint,
+		ht.AssertChannelPolicy(
+			node, bob.PubKeyStr, expectedPolicy, chanPoint,
 		)
 	}
 
@@ -361,39 +292,21 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 		Memo:  "testing",
 		Value: int64(payAmt),
 	}
-	ctxt, _ = context.WithTimeout(ctxb, defaultTimeout)
-	resp, err = carol.AddInvoice(ctxt, invoice)
-	if err != nil {
-		t.Fatalf("unable to add invoice: %v", err)
-	}
+	resp = carol.RPC.AddInvoice(invoice)
 
-	err = completePaymentRequests(
-		net.Alice, net.Alice.RouterClient,
-		[]string{resp.PaymentRequest}, true,
-	)
-	if err != nil {
-		t.Fatalf("unable to send payment: %v", err)
-	}
+	ht.CompletePaymentRequests(alice, []string{resp.PaymentRequest})
 
 	// We'll now open a channel from Alice directly to Carol.
-	net.ConnectNodes(t.t, net.Alice, carol)
-	chanPoint3 := openChannelAndAssert(
-		t, net, net.Alice, carol,
-		lntest.OpenChannelParams{
+	ht.ConnectNodes(alice, carol)
+	chanPoint3 := ht.OpenChannel(
+		alice, carol, lntemp.OpenChannelParams{
 			Amt:     chanAmt,
 			PushAmt: pushAmt,
 		},
 	)
-	defer closeChannelAndAssert(t, net, net.Alice, chanPoint3, false)
 
-	err = net.Alice.WaitForNetworkChannelOpen(chanPoint3)
-	if err != nil {
-		t.Fatalf("alice didn't report channel: %v", err)
-	}
-	err = carol.WaitForNetworkChannelOpen(chanPoint3)
-	if err != nil {
-		t.Fatalf("bob didn't report channel: %v", err)
-	}
+	// Make sure Bob knows this channel.
+	ht.AssertTopologyChannelOpen(bob, chanPoint3)
 
 	// Make a global update, and check that both channels' new policies get
 	// propagated.
@@ -414,28 +327,21 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 		MaxHtlcMsat:   maxHtlc,
 	}
 	req.Scope = &lnrpc.PolicyUpdateRequest_Global{}
-
-	ctxt, _ = context.WithTimeout(ctxb, defaultTimeout)
-	_, err = net.Alice.UpdateChannelPolicy(ctxt, req)
-	if err != nil {
-		t.Fatalf("unable to update alice's channel policy: %v", err)
-	}
+	alice.RPC.UpdateChannelPolicy(req)
 
 	// Wait for all nodes to have seen the policy updates for both of
 	// Alice's channels.
-	assertPolicyUpdate(
-		t, nodes, net.Alice.PubKeyStr, expectedPolicy, chanPoint,
-	)
-	assertPolicyUpdate(
-		t, nodes, net.Alice.PubKeyStr, expectedPolicy, chanPoint3,
-	)
+	assertNodesPolicyUpdate(ht, nodes, alice, expectedPolicy, chanPoint)
+	assertNodesPolicyUpdate(ht, nodes, alice, expectedPolicy, chanPoint3)
 
 	// And finally check that all nodes remembers the policy update they
 	// received.
 	for _, node := range nodes {
-		assertChannelPolicy(
-			t, node, net.Alice.PubKeyStr, expectedPolicy,
-			chanPoint, chanPoint3,
+		ht.AssertChannelPolicy(
+			node, alice.PubKeyStr, expectedPolicy, chanPoint,
+		)
+		ht.AssertChannelPolicy(
+			node, alice.PubKeyStr, expectedPolicy, chanPoint3,
 		)
 	}
 
@@ -443,60 +349,87 @@ func testUpdateChannelPolicy(net *lntest.NetworkHarness, t *harnessTest) {
 	// we'll send two more update from Alice. Carol should accept the first,
 	// but not the second, as she only allows two updates per day and a day
 	// has yet to elapse from the previous update.
-	const numUpdatesTilRateLimit = 2
-	for i := 0; i < numUpdatesTilRateLimit; i++ {
-		prevAlicePolicy := *expectedPolicy
-		baseFee *= 2
-		expectedPolicy.FeeBaseMsat = baseFee
-		req.BaseFeeMsat = baseFee
 
-		ctxt, cancel := context.WithTimeout(ctxb, defaultTimeout)
-		defer cancel()
-		_, err = net.Alice.UpdateChannelPolicy(ctxt, req)
-		require.NoError(t.t, err)
+	// assertAliceAndBob is a helper closure which updates Alice's policy
+	// and asserts that both Alice and Bob have heard and updated the
+	// policy in their graph.
+	assertAliceAndBob := func(req *lnrpc.PolicyUpdateRequest,
+		expectedPolicy *lnrpc.RoutingPolicy) {
+
+		alice.RPC.UpdateChannelPolicy(req)
 
 		// Wait for all nodes to have seen the policy updates for both
 		// of Alice's channels. Carol will not see the last update as
 		// the limit has been reached.
-		assertPolicyUpdate(
-			t, []*lntest.HarnessNode{net.Alice, net.Bob},
-			net.Alice.PubKeyStr, expectedPolicy, chanPoint,
+		assertNodesPolicyUpdate(
+			ht, []*node.HarnessNode{alice, bob},
+			alice, expectedPolicy, chanPoint,
 		)
-		assertPolicyUpdate(
-			t, []*lntest.HarnessNode{net.Alice, net.Bob},
-			net.Alice.PubKeyStr, expectedPolicy, chanPoint3,
+		assertNodesPolicyUpdate(
+			ht, []*node.HarnessNode{alice, bob},
+			alice, expectedPolicy, chanPoint3,
 		)
 
 		// Check that all nodes remember the policy update
 		// they received.
-		assertChannelPolicy(
-			t, net.Alice, net.Alice.PubKeyStr,
-			expectedPolicy, chanPoint, chanPoint3,
+		ht.AssertChannelPolicy(
+			alice, alice.PubKeyStr, expectedPolicy, chanPoint,
 		)
-		assertChannelPolicy(
-			t, net.Bob, net.Alice.PubKeyStr,
-			expectedPolicy, chanPoint, chanPoint3,
+		ht.AssertChannelPolicy(
+			alice, alice.PubKeyStr, expectedPolicy, chanPoint3,
 		)
-
-		// Carol was added last, which is why we check the last index.
-		// Since Carol didn't receive the last update, she still has
-		// Alice's old policy.
-		if i == numUpdatesTilRateLimit-1 {
-			expectedPolicy = &prevAlicePolicy
-		}
-		assertPolicyUpdate(
-			t, []*lntest.HarnessNode{carol},
-			net.Alice.PubKeyStr, expectedPolicy, chanPoint,
+		ht.AssertChannelPolicy(
+			bob, alice.PubKeyStr, expectedPolicy, chanPoint,
 		)
-		assertPolicyUpdate(
-			t, []*lntest.HarnessNode{carol},
-			net.Alice.PubKeyStr, expectedPolicy, chanPoint3,
-		)
-		assertChannelPolicy(
-			t, carol, net.Alice.PubKeyStr,
-			expectedPolicy, chanPoint, chanPoint3,
+		ht.AssertChannelPolicy(
+			bob, alice.PubKeyStr, expectedPolicy, chanPoint3,
 		)
 	}
+
+	// Double the base fee and attach to the policy.
+	baseFee1 := baseFee * 2
+	expectedPolicy.FeeBaseMsat = baseFee1
+	req.BaseFeeMsat = baseFee1
+	assertAliceAndBob(req, expectedPolicy)
+
+	// Check that Carol has both heard the policy and updated it in her
+	// graph.
+	assertNodesPolicyUpdate(
+		ht, []*node.HarnessNode{carol},
+		alice, expectedPolicy, chanPoint,
+	)
+	assertNodesPolicyUpdate(
+		ht, []*node.HarnessNode{carol},
+		alice, expectedPolicy, chanPoint3,
+	)
+	ht.AssertChannelPolicy(
+		carol, alice.PubKeyStr, expectedPolicy, chanPoint,
+	)
+	ht.AssertChannelPolicy(
+		carol, alice.PubKeyStr, expectedPolicy, chanPoint3,
+	)
+
+	// Double the base fee and attach to the policy.
+	baseFee2 := baseFee1 * 2
+	expectedPolicy.FeeBaseMsat = baseFee2
+	req.BaseFeeMsat = baseFee2
+	assertAliceAndBob(req, expectedPolicy)
+
+	// Since Carol didn't receive the last update, she still has Alice's
+	// old policy. We validate this by checking the base fee is the older
+	// one.
+	expectedPolicy.FeeBaseMsat = baseFee1
+	ht.AssertChannelPolicy(
+		carol, alice.PubKeyStr, expectedPolicy, chanPoint,
+	)
+	ht.AssertChannelPolicy(
+		carol, alice.PubKeyStr, expectedPolicy, chanPoint3,
+	)
+
+	// Close all channels.
+	ht.CloseChannel(alice, chanPoint)
+	ht.CloseChannel(bob, chanPoint2)
+	ht.CloseChannel(alice, chanPoint3)
 }
 
 // testSendUpdateDisableChannel ensures that a channel update with the disable
@@ -915,3 +848,16 @@ func testUpdateChannelPolicyFeeRateAccuracy(net *lntest.NetworkHarness,
 		t, nodes, net.Alice.PubKeyStr, expectedPolicy, chanPoint,
 	)
 }
+
+// assertNodesPolicyUpdate checks that a given policy update has been received
+// by a list of given nodes.
+func assertNodesPolicyUpdate(ht *lntemp.HarnessTest, nodes []*node.HarnessNode,
+	advertisingNode *node.HarnessNode, policy *lnrpc.RoutingPolicy,
+	chanPoint *lnrpc.ChannelPoint) {
+
+	for _, node := range nodes {
+		ht.AssertChannelPolicyUpdate(
+			node, advertisingNode, policy, chanPoint, false,
+		)
+	}
+}

lntest/itest/lnd_test_list_on_test.go

@@ -4,10 +4,6 @@
 package itest
 
 var allTestCases = []*testCase{
-	{
-		name: "update channel policy",
-		test: testUpdateChannelPolicy,
-	},
 	{
 		name: "update channel policy fee rate accuracy",
 		test: testUpdateChannelPolicyFeeRateAccuracy,