Golang lnwallet.LightningWallet类代码示例

func testFundingTransactionLockedOutputs(miner *rpctest.Harness,
	wallet *lnwallet.LightningWallet, t *testing.T) {

	t.Log("Running funding txn locked outputs test")

	// Create a single channel asking for 16 BTC total.
	fundingAmount := btcutil.Amount(8 * 1e8)
	_, err := wallet.InitChannelReservation(fundingAmount, fundingAmount,
		testPub, bobAddr, numReqConfs, 4)
	if err != nil {
		t.Fatalf("unable to initialize funding reservation 1: %v", err)
	}

	// Now attempt to reserve funds for another channel, this time
	// requesting 900 BTC. We only have around 64BTC worth of outpoints
	// that aren't locked, so this should fail.
	amt := btcutil.Amount(900 * 1e8)
	failedReservation, err := wallet.InitChannelReservation(amt, amt,
		testPub, bobAddr, numReqConfs, 4)
	if err == nil {
		t.Fatalf("not error returned, should fail on coin selection")
	}
	if _, ok := err.(*lnwallet.ErrInsufficientFunds); !ok {
		t.Fatalf("error not coinselect error: %v", err)
	}
	if failedReservation != nil {
		t.Fatalf("reservation should be nil")
	}
}

// newServer creates a new instance of the server which is to listen using the
// passed listener address.
func newServer(listenAddrs []string, notifier chainntnfs.ChainNotifier,
	bio lnwallet.BlockChainIO, wallet *lnwallet.LightningWallet,
	chanDB *channeldb.DB) (*server, error) {

	privKey, err := wallet.GetIdentitykey()
	if err != nil {
		return nil, err
	}

	listeners := make([]net.Listener, len(listenAddrs))
	for i, addr := range listenAddrs {
		listeners[i], err = brontide.NewListener(privKey, addr)
		if err != nil {
			return nil, err
		}
	}

	serializedPubKey := privKey.PubKey().SerializeCompressed()
	s := &server{
		bio:           bio,
		chainNotifier: notifier,
		chanDB:        chanDB,
		fundingMgr:    newFundingManager(wallet),
		invoices:      newInvoiceRegistry(chanDB),
		lnwallet:      wallet,
		identityPriv:  privKey,
		// TODO(roasbeef): derive proper onion key based on rotation
		// schedule
		sphinx:      sphinx.NewRouter(privKey, activeNetParams.Params),
		lightningID: fastsha256.Sum256(serializedPubKey),
		listeners:   listeners,
		peers:       make(map[int32]*peer),
		newPeers:    make(chan *peer, 100),
		donePeers:   make(chan *peer, 100),
		queries:     make(chan interface{}),
		quit:        make(chan struct{}),
	}

	// If the debug HTLC flag is on, then we invoice a "master debug"
	// invoice which all outgoing payments will be sent and all incoming
	// HTLC's with the debug R-Hash immediately settled.
	if cfg.DebugHTLC {
		kiloCoin := btcutil.Amount(btcutil.SatoshiPerBitcoin * 1000)
		s.invoices.AddDebugInvoice(kiloCoin, *debugPre)
		srvrLog.Debugf("Debug HTLC invoice inserted, preimage=%x, hash=%x",
			debugPre[:], debugHash[:])
	}

	s.utxoNursery = newUtxoNursery(notifier, wallet)

	// Create a new routing manager with ourself as the sole node within
	// the graph.
	selfVertex := hex.EncodeToString(serializedPubKey)
	s.routingMgr = routing.NewRoutingManager(graph.NewID(selfVertex), nil)
	s.htlcSwitch = newHtlcSwitch(serializedPubKey, s.routingMgr)

	s.rpcServer = newRpcServer(s)

	return s, nil
}

// assertProperBalance asserts than the total value of the unspent outputs
// within the wallet are *exactly* amount. If unable to retrieve the current
// balance, or the assertion fails, the test will halt with a fatal error.
func assertProperBalance(t *testing.T, lw *lnwallet.LightningWallet, numConfirms int32, amount int64) {
	balance, err := lw.ConfirmedBalance(numConfirms, false)
	if err != nil {
		t.Fatalf("unable to query for balance: %v", err)
	}
	if balance != btcutil.Amount(amount*1e8) {
		t.Fatalf("wallet credits not properly loaded, should have 40BTC, "+
			"instead have %v", balance)
	}
}

func loadTestCredits(miner *rpctest.Harness, w *lnwallet.LightningWallet, numOutputs, btcPerOutput int) error {
	// Using the mining node, spend from a coinbase output numOutputs to
	// give us btcPerOutput with each output.
	satoshiPerOutput := int64(btcPerOutput * 1e8)
	addrs := make([]btcutil.Address, 0, numOutputs)
	for i := 0; i < numOutputs; i++ {
		// Grab a fresh address from the wallet to house this output.
		walletAddr, err := w.NewAddress(lnwallet.WitnessPubKey, false)
		if err != nil {
			return err
		}

		script, err := txscript.PayToAddrScript(walletAddr)
		if err != nil {
			return err
		}

		addrs = append(addrs, walletAddr)

		output := &wire.TxOut{satoshiPerOutput, script}
		if _, err := miner.CoinbaseSpend([]*wire.TxOut{output}); err != nil {
			return err
		}
	}

	// TODO(roasbeef): shouldn't hardcode 10, use config param that dictates
	// how many confs we wait before opening a channel.
	// Generate 10 blocks with the mining node, this should mine all
	// numOutputs transactions created above. We generate 10 blocks here
	// in order to give all the outputs a "sufficient" number of confirmations.
	if _, err := miner.Node.Generate(10); err != nil {
		return err
	}

	// Wait until the wallet has finished syncing up to the main chain.
	ticker := time.NewTicker(100 * time.Millisecond)
	expectedBalance := btcutil.Amount(satoshiPerOutput * int64(numOutputs))
out:
	for {
		select {
		case <-ticker.C:
			balance, err := w.ConfirmedBalance(1, false)
			if err != nil {
				return err
			}
			if balance == expectedBalance {
				break out
			}
		}
	}
	ticker.Stop()

	return nil
}

func testListTransactionDetails(miner *rpctest.Harness, wallet *lnwallet.LightningWallet, t *testing.T) {
	t.Log("Running list transaction details test")

	// Create 5 new outputs spendable by the wallet.
	const numTxns = 5
	const outputAmt = btcutil.SatoshiPerBitcoin
	txids := make(map[wire.ShaHash]struct{})
	for i := 0; i < numTxns; i++ {
		addr, err := wallet.NewAddress(lnwallet.WitnessPubKey, false)
		if err != nil {
			t.Fatalf("unable to create new address: %v", err)
		}
		script, err := txscript.PayToAddrScript(addr)
		if err != nil {
			t.Fatalf("unable to create output script: %v", err)
		}

		output := &wire.TxOut{outputAmt, script}
		txid, err := miner.CoinbaseSpend([]*wire.TxOut{output})
		if err != nil {
			t.Fatalf("unable to send coinbase: %v", err)
		}
		txids[*txid] = struct{}{}
	}

	// Generate 10 blocks to mine all the transactions created above.
	const numBlocksMined = 10
	blocks, err := miner.Node.Generate(numBlocksMined)
	if err != nil {
		t.Fatalf("unable to mine blocks: %v", err)
	}

	// Next, fetch all the current transaction details.
	// TODO(roasbeef): use ntfn client here instead?
	time.Sleep(time.Second * 2)
	txDetails, err := wallet.ListTransactionDetails()
	if err != nil {
		t.Fatalf("unable to fetch tx details: %v", err)
	}

	// Each of the transactions created above should be found with the
	// proper details populated.
	for _, txDetail := range txDetails {
		if _, ok := txids[txDetail.Hash]; !ok {
			continue
		}

		if txDetail.NumConfirmations != numBlocksMined {
			t.Fatalf("num confs incorrect, got %v expected %v",
				txDetail.NumConfirmations, numBlocksMined)
		}
		if txDetail.Value != outputAmt {
			t.Fatalf("tx value incorrect, got %v expected %v",
				txDetail.Value, outputAmt)
		}
		if !bytes.Equal(txDetail.BlockHash[:], blocks[0][:]) {
			t.Fatalf("block hash mismatch, got %v expected %v",
				txDetail.BlockHash, blocks[0])
		}

		delete(txids, txDetail.Hash)
	}
	if len(txids) != 0 {
		t.Fatalf("all transactions not found in details!")
	}

	// Next create a transaction paying to an output which isn't under the
	// wallet's control.
	b := txscript.NewScriptBuilder()
	b.AddOp(txscript.OP_0)
	outputScript, err := b.Script()
	if err != nil {
		t.Fatalf("unable to make output script: %v", err)
	}
	burnOutput := wire.NewTxOut(outputAmt, outputScript)
	burnTXID, err := wallet.SendOutputs([]*wire.TxOut{burnOutput})
	if err != nil {
		t.Fatalf("unable to create burn tx: %v", err)
	}
	burnBlock, err := miner.Node.Generate(1)
	if err != nil {
		t.Fatalf("unable to mine block: %v", err)
	}

	// Fetch the transaction details again, the new transaction should be
	// shown as debiting from the wallet's balance.
	time.Sleep(time.Second * 2)
	txDetails, err = wallet.ListTransactionDetails()
	if err != nil {
		t.Fatalf("unable to fetch tx details: %v", err)
	}
	var burnTxFound bool
	for _, txDetail := range txDetails {
		if !bytes.Equal(txDetail.Hash[:], burnTXID[:]) {
			continue
		}

		burnTxFound = true
		if txDetail.NumConfirmations != 1 {
			t.Fatalf("num confs incorrect, got %v expected %v",
//.........这里部分代码省略.........

func testSingleFunderReservationWorkflowResponder(miner *rpctest.Harness,
	wallet *lnwallet.LightningWallet, t *testing.T) {

	t.Log("Running single funder workflow responder test")

	// For this scenario, bob will initiate the channel, while we simply act as
	// the responder.
	capacity := btcutil.Amount(4 * 1e8)

	// Create the bob-test wallet which will be initiator of a single
	// funder channel shortly.
	bobNode, err := newBobNode(miner, capacity)
	if err != nil {
		t.Fatalf("unable to create bob node: %v", err)
	}

	// Bob sends over a single funding request, so we allocate our
	// contribution and the necessary resources.
	fundingAmt := btcutil.Amount(0)
	chanReservation, err := wallet.InitChannelReservation(capacity,
		fundingAmt, bobNode.id, bobAddr, numReqConfs, 4)
	if err != nil {
		t.Fatalf("unable to init channel reservation: %v", err)
	}

	// Verify all contribution fields have been set properly. Since we are
	// the recipient of a single-funder channel, we shouldn't have selected
	// any coins or generated any change outputs.
	ourContribution := chanReservation.OurContribution()
	if len(ourContribution.Inputs) != 0 {
		t.Fatalf("outputs for funding tx not properly selected, have %v "+
			"outputs should have 0", len(ourContribution.Inputs))
	}
	if len(ourContribution.ChangeOutputs) != 0 {
		t.Fatalf("coin selection failed, should have no change outputs, "+
			"instead have: %v", ourContribution.ChangeOutputs[0].Value)
	}
	if ourContribution.MultiSigKey == nil {
		t.Fatalf("alice's key for multi-sig not found")
	}
	if ourContribution.CommitKey == nil {
		t.Fatalf("alice's key for commit not found")
	}
	if ourContribution.DeliveryAddress == nil {
		t.Fatalf("alice's final delivery address not found")
	}
	if ourContribution.CsvDelay == 0 {
		t.Fatalf("csv delay not set")
	}

	// Next we process Bob's single funder contribution which doesn't
	// include any inputs or change addresses, as only Bob will construct
	// the funding transaction.
	bobContribution := bobNode.Contribution(ourContribution.CommitKey)
	if err := chanReservation.ProcessSingleContribution(bobContribution); err != nil {
		t.Fatalf("unable to process bob's contribution: %v", err)
	}
	if chanReservation.FinalFundingTx() != nil {
		t.Fatalf("funding transaction populated!")
	}
	if len(bobContribution.Inputs) != 1 {
		t.Fatalf("bob shouldn't have one inputs, instead has %v",
			len(bobContribution.Inputs))
	}
	if ourContribution.RevocationKey == nil {
		t.Fatalf("alice's revocation key not found")
	}
	if len(bobContribution.ChangeOutputs) != 1 {
		t.Fatalf("bob shouldn't have one change output, instead "+
			"has %v", len(bobContribution.ChangeOutputs))
	}
	if bobContribution.MultiSigKey == nil {
		t.Fatalf("bob's key for multi-sig not found")
	}
	if bobContribution.CommitKey == nil {
		t.Fatalf("bob's key for commit tx not found")
	}
	if bobContribution.DeliveryAddress == nil {
		t.Fatalf("bob's final delivery address not found")
	}
	if bobContribution.RevocationKey == nil {
		t.Fatalf("bob's revocaiton key not found")
	}

	fundingRedeemScript, multiOut, err := lnwallet.GenFundingPkScript(
		ourContribution.MultiSigKey.SerializeCompressed(),
		bobContribution.MultiSigKey.SerializeCompressed(),
		// TODO(roasbeef): account for hard-coded fee, remove bob node
		int64(capacity)+5000)
	if err != nil {
		t.Fatalf("unable to generate multi-sig output: %v", err)
	}

	// At this point, we send Bob our contribution, allowing him to
	// construct the funding transaction, and sign our version of the
	// commitment transaction.
	fundingTx := wire.NewMsgTx()
	fundingTx.AddTxIn(bobNode.availableOutputs[0])
	fundingTx.AddTxOut(bobNode.changeOutputs[0])
	fundingTx.AddTxOut(multiOut)
//.........这里部分代码省略.........

func testSingleFunderReservationWorkflowInitiator(miner *rpctest.Harness,
	lnwallet *lnwallet.LightningWallet, t *testing.T) {

	t.Log("Running single funder workflow initiator test")

	// For this scenario, we (lnwallet) will be the channel initiator while bob
	// will be the recipient.

	// Create the bob-test wallet which will be the other side of our funding
	// channel.
	bobNode, err := newBobNode(miner, 0)
	if err != nil {
		t.Fatalf("unable to create bob node: %v", err)
	}

	// Initialize a reservation for a channel with 4 BTC funded solely by us.
	fundingAmt := btcutil.Amount(4 * 1e8)
	chanReservation, err := lnwallet.InitChannelReservation(fundingAmt,
		fundingAmt, bobNode.id, bobAddr, numReqConfs, 4)
	if err != nil {
		t.Fatalf("unable to init channel reservation: %v", err)
	}

	// Verify all contribution fields have been set properly.
	ourContribution := chanReservation.OurContribution()
	if len(ourContribution.Inputs) < 1 {
		t.Fatalf("outputs for funding tx not properly selected, have %v "+
			"outputs should at least 1", len(ourContribution.Inputs))
	}
	if len(ourContribution.ChangeOutputs) != 1 {
		t.Fatalf("coin selection failed, should have one change outputs, "+
			"instead have: %v", len(ourContribution.ChangeOutputs))
	}
	if ourContribution.MultiSigKey == nil {
		t.Fatalf("alice's key for multi-sig not found")
	}
	if ourContribution.CommitKey == nil {
		t.Fatalf("alice's key for commit not found")
	}
	if ourContribution.DeliveryAddress == nil {
		t.Fatalf("alice's final delivery address not found")
	}
	if ourContribution.CsvDelay == 0 {
		t.Fatalf("csv delay not set")
	}

	// At this point bob now responds to our request with a response
	// containing his channel contribution. The contribution will have no
	// inputs, only a multi-sig key, csv delay, etc.
	bobContribution := bobNode.SingleContribution(ourContribution.CommitKey)
	if err := chanReservation.ProcessContribution(bobContribution); err != nil {
		t.Fatalf("unable to add bob's contribution: %v", err)
	}

	// At this point, the reservation should have our signatures, and a
	// partial funding transaction (missing bob's sigs).
	theirContribution := chanReservation.TheirContribution()
	ourFundingSigs, ourCommitSig := chanReservation.OurSignatures()
	if ourFundingSigs == nil {
		t.Fatalf("funding sigs not found")
	}
	if ourCommitSig == nil {
		t.Fatalf("commitment sig not found")
	}
	// Additionally, the funding tx should have been populated.
	if chanReservation.FinalFundingTx() == nil {
		t.Fatalf("funding transaction never created!")
	}
	// Their funds should also be filled in.
	if len(theirContribution.Inputs) != 0 {
		t.Fatalf("bob shouldn't have any inputs, instead has %v",
			len(theirContribution.Inputs))
	}
	if len(theirContribution.ChangeOutputs) != 0 {
		t.Fatalf("bob shouldn't have any change outputs, instead "+
			"has %v", theirContribution.ChangeOutputs[0].Value)
	}
	if ourContribution.RevocationKey == nil {
		t.Fatalf("alice's revocation hash not found")
	}
	if theirContribution.MultiSigKey == nil {
		t.Fatalf("bob's key for multi-sig not found")
	}
	if theirContribution.CommitKey == nil {
		t.Fatalf("bob's key for commit tx not found")
	}
	if theirContribution.DeliveryAddress == nil {
		t.Fatalf("bob's final delivery address not found")
	}
	if theirContribution.RevocationKey == nil {
		t.Fatalf("bob's revocaiton hash not found")
	}

	// With this contribution processed, we're able to create the
	// funding+commitment transactions, as well as generate a signature
	// for bob's version of the commitment transaction.
	//
	// Now Bob can generate a signature for our version of the commitment
	// transaction, allowing us to complete the reservation.
	bobCommitSig, err := bobNode.signCommitTx(
//.........这里部分代码省略.........

func testFundingCancellationNotEnoughFunds(miner *rpctest.Harness,
	wallet *lnwallet.LightningWallet, t *testing.T) {

	t.Log("Running funding insufficient funds tests")

	// Create a reservation for 44 BTC.
	fundingAmount := btcutil.Amount(44 * 1e8)
	chanReservation, err := wallet.InitChannelReservation(fundingAmount,
		fundingAmount, testPub, bobAddr, numReqConfs, 4)
	if err != nil {
		t.Fatalf("unable to initialize funding reservation: %v", err)
	}

	// Attempt to create another channel with 44 BTC, this should fail.
	_, err = wallet.InitChannelReservation(fundingAmount,
		fundingAmount, testPub, bobAddr, numReqConfs, 4)
	if _, ok := err.(*lnwallet.ErrInsufficientFunds); !ok {
		t.Fatalf("coin selection succeded should have insufficient funds: %v",
			err)
	}

	// Now cancel that old reservation.
	if err := chanReservation.Cancel(); err != nil {
		t.Fatalf("unable to cancel reservation: %v", err)
	}

	// Those outpoints should no longer be locked.
	lockedOutPoints := wallet.LockedOutpoints()
	if len(lockedOutPoints) != 0 {
		t.Fatalf("outpoints still locked")
	}

	// Reservation ID should no longer be tracked.
	numReservations := wallet.ActiveReservations()
	if len(wallet.ActiveReservations()) != 0 {
		t.Fatalf("should have 0 reservations, instead have %v",
			numReservations)
	}

	// TODO(roasbeef): create method like Balance that ignores locked
	// outpoints, will let us fail early/fast instead of querying and
	// attempting coin selection.

	// Request to fund a new channel should now succeeed.
	_, err = wallet.InitChannelReservation(fundingAmount, fundingAmount,
		testPub, bobAddr, numReqConfs, 4)
	if err != nil {
		t.Fatalf("unable to initialize funding reservation: %v", err)
	}
}

func testDualFundingReservationWorkflow(miner *rpctest.Harness, wallet *lnwallet.LightningWallet, t *testing.T) {
	t.Log("Running dual reservation workflow test")

	// Create the bob-test wallet which will be the other side of our funding
	// channel.
	fundingAmount := btcutil.Amount(5 * 1e8)
	bobNode, err := newBobNode(miner, fundingAmount)
	if err != nil {
		t.Fatalf("unable to create bob node: %v", err)
	}

	// Bob initiates a channel funded with 5 BTC for each side, so 10
	// BTC total. He also generates 2 BTC in change.
	chanReservation, err := wallet.InitChannelReservation(fundingAmount*2,
		fundingAmount, bobNode.id, bobAddr, numReqConfs, 4)
	if err != nil {
		t.Fatalf("unable to initialize funding reservation: %v", err)
	}

	// The channel reservation should now be populated with a multi-sig key
	// from our HD chain, a change output with 3 BTC, and 2 outputs selected
	// of 4 BTC each. Additionally, the rest of the items needed to fufill a
	// funding contribution should also have been filled in.
	ourContribution := chanReservation.OurContribution()
	if len(ourContribution.Inputs) != 2 {
		t.Fatalf("outputs for funding tx not properly selected, have %v "+
			"outputs should have 2", len(ourContribution.Inputs))
	}
	if ourContribution.MultiSigKey == nil {
		t.Fatalf("alice's key for multi-sig not found")
	}
	if ourContribution.CommitKey == nil {
		t.Fatalf("alice's key for commit not found")
	}
	if ourContribution.DeliveryAddress == nil {
		t.Fatalf("alice's final delivery address not found")
	}
	if ourContribution.CsvDelay == 0 {
		t.Fatalf("csv delay not set")
	}

	// Bob sends over his output, change addr, pub keys, initial revocation,
	// final delivery address, and his accepted csv delay for the
	// commitment transactions.
	bobContribution := bobNode.Contribution(ourContribution.CommitKey)
	if err := chanReservation.ProcessContribution(bobContribution); err != nil {
		t.Fatalf("unable to add bob's funds to the funding tx: %v", err)
	}

	// At this point, the reservation should have our signatures, and a
	// partial funding transaction (missing bob's sigs).
	theirContribution := chanReservation.TheirContribution()
	ourFundingSigs, ourCommitSig := chanReservation.OurSignatures()
	if len(ourFundingSigs) != 2 {
		t.Fatalf("only %v of our sigs present, should have 2",
			len(ourFundingSigs))
	}
	if ourCommitSig == nil {
		t.Fatalf("commitment sig not found")
	}
	if ourContribution.RevocationKey == nil {
		t.Fatalf("alice's revocation key not found")
	}

	// Additionally, the funding tx should have been populated.
	fundingTx := chanReservation.FinalFundingTx()
	if fundingTx == nil {
		t.Fatalf("funding transaction never created!")
	}

	// Their funds should also be filled in.
	if len(theirContribution.Inputs) != 1 {
		t.Fatalf("bob's outputs for funding tx not properly selected, have %v "+
			"outputs should have 2", len(theirContribution.Inputs))
	}
	if theirContribution.ChangeOutputs[0].Value != 2e8 {
		t.Fatalf("bob should have one change output with value 2e8"+
			"satoshis, is instead %v",
			theirContribution.ChangeOutputs[0].Value)
	}
	if theirContribution.MultiSigKey == nil {
		t.Fatalf("bob's key for multi-sig not found")
	}
	if theirContribution.CommitKey == nil {
		t.Fatalf("bob's key for commit tx not found")
	}
	if theirContribution.DeliveryAddress == nil {
		t.Fatalf("bob's final delivery address not found")
	}
	if theirContribution.RevocationKey == nil {
		t.Fatalf("bob's revocaiton key not found")
	}

	// TODO(roasbeef): account for current hard-coded commit fee,
	// need to remove bob all together
	chanCapacity := int64(10e8 + 5000)
	// Alice responds with her output, change addr, multi-sig key and signatures.
	// Bob then responds with his signatures.
	bobsSigs, err := bobNode.signFundingTx(fundingTx)
	if err != nil {
//.........这里部分代码省略.........

func clearWalletState(w *lnwallet.LightningWallet) error {
	w.ResetReservations()

	return w.ChannelDB.Wipe()
}

func testTransactionSubscriptions(miner *rpctest.Harness, w *lnwallet.LightningWallet, t *testing.T) {
	t.Log("Running transaction subscriptions test")

	// First, check to see if this wallet meets the TransactionNotifier
	// interface, if not then we'll skip this test for this particular
	// implementation of the WalletController.
	txClient, err := w.SubscribeTransactions()
	if err != nil {
		t.Fatalf("unable to generate tx subscription: %v")
	}
	defer txClient.Cancel()

	const (
		outputAmt = btcutil.SatoshiPerBitcoin
		numTxns   = 3
	)
	unconfirmedNtfns := make(chan struct{})
	go func() {
		for i := 0; i < numTxns; i++ {
			txDetail := <-txClient.UnconfirmedTransactions()
			if txDetail.NumConfirmations != 0 {
				t.Fatalf("incorrect number of confs, expected %v got %v",
					0, txDetail.NumConfirmations)
			}
			if txDetail.Value != outputAmt {
				t.Fatalf("incorrect output amt, expected %v got %v",
					outputAmt, txDetail.Value)
			}
			if txDetail.BlockHash != nil {
				t.Fatalf("block hash should be nil, is instead %v",
					txDetail.BlockHash)
			}
		}

		close(unconfirmedNtfns)
	}()

	// Next, fetch a fresh address from the wallet, create 3 new outputs
	// with the pkScript.
	for i := 0; i < numTxns; i++ {
		addr, err := w.NewAddress(lnwallet.WitnessPubKey, false)
		if err != nil {
			t.Fatalf("unable to create new address: %v", err)
		}
		script, err := txscript.PayToAddrScript(addr)
		if err != nil {
			t.Fatalf("unable to create output script: %v", err)
		}

		output := &wire.TxOut{outputAmt, script}
		if _, err := miner.CoinbaseSpend([]*wire.TxOut{output}); err != nil {
			t.Fatalf("unable to send coinbase: %v", err)
		}
	}

	// We should receive a notification for all three transactions
	// generated above.
	select {
	case <-time.After(time.Second * 5):
		t.Fatalf("transactions not received after 3 seconds")
	case <-unconfirmedNtfns: // Fall through on successs
	}

	confirmedNtfns := make(chan struct{})
	go func() {
		for i := 0; i < numTxns; i++ {
			txDetail := <-txClient.ConfirmedTransactions()
			if txDetail.NumConfirmations != 1 {
				t.Fatalf("incorrect number of confs, expected %v got %v",
					0, txDetail.NumConfirmations)
			}
			if txDetail.Value != outputAmt {
				t.Fatalf("incorrect output amt, expected %v got %v",
					outputAmt, txDetail.Value)
			}
		}
		close(confirmedNtfns)
	}()

	// Next mine a single block, all the transactions generated above
	// should be included.
	if _, err := miner.Node.Generate(1); err != nil {
		t.Fatalf("unable to generate block: %v", err)
	}

	// We should receive a notification for all three transactions
	// since they should be mined in the next block.
	select {
	case <-time.After(time.Second * 5):
		t.Fatalf("transactions not received after 3 seconds")
	case <-confirmedNtfns: // Fall through on successs
	}
}