itest: add itest for MinRelayFee check

This commit adds an integration test for the MinRelayFee check. The test
ensures that transactions with fees below the minimum relay fee are
rejected.

cmd/litcli/ln.go

@@ -64,7 +64,6 @@ var fundChannelCommand = cli.Command{
 			Usage: "(optional) a manual fee expressed in " +
 				"sat/vByte that should be used when crafting " +
 				"the transaction",
-			Value: 1,
 		},
 		cli.Uint64Flag{
 			Name: "push_amt",

go.mod

@@ -16,14 +16,14 @@ require (
 	github.com/lightninglabs/lightning-node-connect v0.3.2-alpha.0.20240822142323-ee4e7ff52f83
 	github.com/lightninglabs/lightning-terminal/autopilotserverrpc v0.0.1
 	github.com/lightninglabs/lightning-terminal/litrpc v1.0.0
-	github.com/lightninglabs/lndclient v0.18.4-1
+	github.com/lightninglabs/lndclient v0.18.4-3
 	github.com/lightninglabs/loop v0.28.8-beta.0.20241022072406-1e8ae31ddc27
 	github.com/lightninglabs/loop/looprpc v1.0.0
 	github.com/lightninglabs/loop/swapserverrpc v1.0.10
 	github.com/lightninglabs/pool v0.6.5-beta.0.20241015105339-044cb451b5df
 	github.com/lightninglabs/pool/auctioneerrpc v1.1.2
 	github.com/lightninglabs/pool/poolrpc v1.0.0
-	github.com/lightninglabs/taproot-assets v0.4.2-0.20241031160301-588e58bfae6c
+	github.com/lightninglabs/taproot-assets v0.4.2-0.20241101220611-e6b78bd51722
 	github.com/lightningnetwork/lnd v0.18.3-beta.rc3.0.20241025090009-615f3d633e61
 	github.com/lightningnetwork/lnd/cert v1.2.2
 	github.com/lightningnetwork/lnd/fn v1.2.3

go.sum

@@ -1157,8 +1157,8 @@ github.com/lightninglabs/lightning-node-connect v0.3.2-alpha.0.20240822142323-ee
 github.com/lightninglabs/lightning-node-connect v0.3.2-alpha.0.20240822142323-ee4e7ff52f83/go.mod h1:+SasPOt0evcJdfApb/ALTaTz4x3a2/kWy5KqFoTpiX8=
 github.com/lightninglabs/lightning-node-connect/hashmailrpc v1.0.2 h1:Er1miPZD2XZwcfE4xoS5AILqP1mj7kqnhbBSxW9BDxY=
 github.com/lightninglabs/lightning-node-connect/hashmailrpc v1.0.2/go.mod h1:antQGRDRJiuyQF6l+k6NECCSImgCpwaZapATth2Chv4=
-github.com/lightninglabs/lndclient v0.18.4-1 h1:k2UnxHGNH243NRe5/dL2sKgrxc8WMHbFQRdnCtfilwc=
-github.com/lightninglabs/lndclient v0.18.4-1/go.mod h1:/HLqmZGL9MtP8F1g+laq+L9VrsugBN5tsTct3C5wWCg=
+github.com/lightninglabs/lndclient v0.18.4-3 h1:Xk3ZuCQE4ZlF70jaToryL2MvRcryiE0zTfUjJbmzUBY=
+github.com/lightninglabs/lndclient v0.18.4-3/go.mod h1:/HLqmZGL9MtP8F1g+laq+L9VrsugBN5tsTct3C5wWCg=
 github.com/lightninglabs/loop v0.28.8-beta.0.20241022072406-1e8ae31ddc27 h1:eZBvG9XvDL0zsUIqFfD7SCk+Ex8rGWEL8j5UQ/aqjco=
 github.com/lightninglabs/loop v0.28.8-beta.0.20241022072406-1e8ae31ddc27/go.mod h1:4B1DqrcOc5Yv9KyclAeQJY9Ah9UMX7RpI4Uru7aEzl4=
 github.com/lightninglabs/loop/looprpc v1.0.0 h1:xry4QPCZShPww660xJm1BVcNFj8etgNeN2vMpfsv3c4=
@@ -1177,8 +1177,8 @@ github.com/lightninglabs/pool/poolrpc v1.0.0 h1:vvosrgNx9WXF4mcHGqLjZOW8wNM0q+BL
 github.com/lightninglabs/pool/poolrpc v1.0.0/go.mod h1:ZqpEpBFRMMBAerMmilEjh27tqauSXDwLaLR0O3jvmMA=
 github.com/lightninglabs/protobuf-go-hex-display v1.34.2-hex-display h1:w7FM5LH9Z6CpKxl13mS48idsu6F+cEZf0lkyiV+Dq9g=
 github.com/lightninglabs/protobuf-go-hex-display v1.34.2-hex-display/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
-github.com/lightninglabs/taproot-assets v0.4.2-0.20241031160301-588e58bfae6c h1:HfU82bWD4Yk+Mf2Ax25uhcIwq0SxToTq8J8YJLReW/U=
-github.com/lightninglabs/taproot-assets v0.4.2-0.20241031160301-588e58bfae6c/go.mod h1:AYq9p1FOMdwAGjEjVaT79+cDyAwcc4fj8W0YJvCU0JE=
+github.com/lightninglabs/taproot-assets v0.4.2-0.20241101220611-e6b78bd51722 h1:67uNN65L8P6rcTkFAAuD+oYldQcDkSQLGK+o4Cfu/X8=
+github.com/lightninglabs/taproot-assets v0.4.2-0.20241101220611-e6b78bd51722/go.mod h1:DLcxQrwsLSXLTMNr1hBY5+pJSxNJYqobPqxhflYYFp8=
 github.com/lightningnetwork/lightning-onion v1.2.1-0.20240712235311-98bd56499dfb h1:yfM05S8DXKhuCBp5qSMZdtSwvJ+GFzl94KbXMNB1JDY=
 github.com/lightningnetwork/lightning-onion v1.2.1-0.20240712235311-98bd56499dfb/go.mod h1:c0kvRShutpj3l6B9WtTsNTBUtjSmjZXbJd9ZBRQOSKI=
 github.com/lightningnetwork/lnd v0.18.3-beta.rc3.0.20241025090009-615f3d633e61 h1:EcBM2tz+iyspYRFaDVjUe5a2bkuBWFxOWD2mzdCraUc=

itest/litd_custom_channels_test.go

@@ -27,6 +27,7 @@ import (
 	"github.com/lightningnetwork/lnd/lntest"
 	"github.com/lightningnetwork/lnd/lntest/port"
 	"github.com/lightningnetwork/lnd/lntest/wait"
+	"github.com/lightningnetwork/lnd/lnwallet/chainfee"
 	"github.com/lightningnetwork/lnd/lnwire"
 	"github.com/stretchr/testify/require"
 )
@@ -2637,3 +2638,87 @@ func testCustomChannelsOraclePricing(_ context.Context,
 		noOpCoOpCloseBalanceCheck,
 	)
 }
+
+// testCustomChannelsFee tests the whether the custom channel funding process
+// fails if the proposed fee rate is lower than the minimum relay fee.
+func testCustomChannelsFee(_ context.Context,
+	net *NetworkHarness, t *harnessTest) {
+
+	ctxb := context.Background()
+	lndArgs := slices.Clone(lndArgsTemplate)
+	litdArgs := slices.Clone(litdArgsTemplate)
+
+	zane, err := net.NewNode(
+		t.t, "Zane", lndArgs, false, true, litdArgs...,
+	)
+	require.NoError(t.t, err)
+
+	litdArgs = append(litdArgs, fmt.Sprintf(
+		"--taproot-assets.proofcourieraddr=%s://%s",
+		proof.UniverseRpcCourierType, zane.Cfg.LitAddr(),
+	))
+
+	charlie, err := net.NewNode(
+		t.t, "Charlie", lndArgs, false, true, litdArgs...,
+	)
+	require.NoError(t.t, err)
+	dave, err := net.NewNode(t.t, "Dave", lndArgs, false, true, litdArgs...)
+	require.NoError(t.t, err)
+
+	nodes := []*HarnessNode{charlie, dave}
+	connectAllNodes(t.t, net, nodes)
+	fundAllNodes(t.t, net, nodes)
+
+	charlieTap := newTapClient(t.t, charlie)
+	daveTap := newTapClient(t.t, dave)
+
+	// Mint an assets on Charlie and sync Dave to Charlie as the universe.
+	mintedAssets := itest.MintAssetsConfirmBatch(
+		t.t, t.lndHarness.Miner.Client, charlieTap,
+		[]*mintrpc.MintAssetRequest{
+			{
+				Asset: itestAsset,
+			},
+		},
+	)
+	cents := mintedAssets[0]
+	assetID := cents.AssetGenesis.AssetId
+
+	t.Logf("Minted %d lightning cents, syncing universes...", cents.Amount)
+	syncUniverses(t.t, charlieTap, dave)
+	t.Logf("Universes synced between all nodes, distributing assets...")
+
+	// Fund a channel with a fee rate of zero.
+	zeroLowFeeRate := uint32(0)
+
+	_, err = charlieTap.FundChannel(
+		ctxb, &tchrpc.FundChannelRequest{
+			AssetAmount:        cents.Amount,
+			AssetId:            assetID,
+			PeerPubkey:         daveTap.node.PubKey[:],
+			FeeRateSatPerVbyte: zeroLowFeeRate,
+			PushSat:            0,
+		},
+	)
+
+	errSpecifyFeerate := "fee rate must be specified"
+	require.ErrorContains(t.t, err, errSpecifyFeerate)
+
+	// Fund a channel with a fee rate that is too low.
+	tooLowFeeRate := uint32(1)
+	tooLowFeeRateAmount := chainfee.SatPerVByte(tooLowFeeRate)
+
+	_, err = charlieTap.FundChannel(
+		ctxb, &tchrpc.FundChannelRequest{
+			AssetAmount:        cents.Amount,
+			AssetId:            assetID,
+			PeerPubkey:         daveTap.node.PubKey[:],
+			FeeRateSatPerVbyte: tooLowFeeRate,
+			PushSat:            0,
+		},
+	)
+
+	errFeeRateTooLow := fmt.Sprintf("fee rate %s too low, "+
+		"min_relay_fee: ", tooLowFeeRateAmount.FeePerKWeight())
+	require.ErrorContains(t.t, err, errFeeRateTooLow)
+}

itest/litd_test_list_on_test.go

@@ -60,4 +60,8 @@ var allTestCases = []*testCase{
 		name: "test custom channels oracle pricing",
 		test: testCustomChannelsOraclePricing,
 	},
+	{
+		name: "test custom channels fee",
+		test: testCustomChannelsFee,
+	},
 }