1594 lines
55 KiB
Go
1594 lines
55 KiB
Go
package lnwallet
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import (
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"bytes"
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"crypto/sha256"
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"io/ioutil"
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"os"
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"testing"
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"github.com/davecgh/go-spew/spew"
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"github.com/lightningnetwork/lnd/chainntnfs"
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/shachain"
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"github.com/roasbeef/btcd/blockchain"
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"github.com/roasbeef/btcd/btcec"
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"github.com/roasbeef/btcd/chaincfg/chainhash"
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"github.com/roasbeef/btcd/txscript"
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"github.com/roasbeef/btcd/wire"
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"github.com/roasbeef/btcutil"
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)
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var (
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privPass = []byte("private-test")
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// For simplicity a single priv key controls all of our test outputs.
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testWalletPrivKey = []byte{
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0x2b, 0xd8, 0x06, 0xc9, 0x7f, 0x0e, 0x00, 0xaf,
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0x1a, 0x1f, 0xc3, 0x32, 0x8f, 0xa7, 0x63, 0xa9,
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0x26, 0x97, 0x23, 0xc8, 0xdb, 0x8f, 0xac, 0x4f,
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0x93, 0xaf, 0x71, 0xdb, 0x18, 0x6d, 0x6e, 0x90,
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}
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// We're alice :)
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bobsPrivKey = []byte{
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0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
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0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
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0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
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0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
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}
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// Use a hard-coded HD seed.
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testHdSeed = [32]byte{
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0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
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0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
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0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
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0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
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}
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// The number of confirmations required to consider any created channel
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// open.
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numReqConfs = uint16(1)
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)
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type mockSigner struct {
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key *btcec.PrivateKey
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}
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func (m *mockSigner) SignOutputRaw(tx *wire.MsgTx, signDesc *SignDescriptor) ([]byte, error) {
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amt := signDesc.Output.Value
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witnessScript := signDesc.WitnessScript
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privKey := m.key
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sig, err := txscript.RawTxInWitnessSignature(tx, signDesc.SigHashes,
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signDesc.InputIndex, amt, witnessScript, txscript.SigHashAll, privKey)
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if err != nil {
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return nil, err
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}
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return sig[:len(sig)-1], nil
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}
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func (m *mockSigner) ComputeInputScript(tx *wire.MsgTx, signDesc *SignDescriptor) (*InputScript, error) {
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witnessScript, err := txscript.WitnessScript(tx, signDesc.SigHashes,
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signDesc.InputIndex, signDesc.Output.Value, signDesc.Output.PkScript,
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txscript.SigHashAll, m.key, true)
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if err != nil {
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return nil, err
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}
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return &InputScript{
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Witness: witnessScript,
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}, nil
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}
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type mockNotfier struct {
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}
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func (m *mockNotfier) RegisterConfirmationsNtfn(txid *chainhash.Hash, numConfs, heightHint uint32) (*chainntnfs.ConfirmationEvent, error) {
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return nil, nil
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}
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func (m *mockNotfier) RegisterBlockEpochNtfn() (*chainntnfs.BlockEpochEvent, error) {
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return nil, nil
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}
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func (m *mockNotfier) Start() error {
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return nil
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}
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func (m *mockNotfier) Stop() error {
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return nil
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}
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func (m *mockNotfier) RegisterSpendNtfn(outpoint *wire.OutPoint, heightHint uint32) (*chainntnfs.SpendEvent, error) {
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return &chainntnfs.SpendEvent{
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Spend: make(chan *chainntnfs.SpendDetail),
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}, nil
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}
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// initRevocationWindows simulates a new channel being opened within the p2p
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// network by populating the initial revocation windows of the passed
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// commitment state machines.
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func initRevocationWindows(chanA, chanB *LightningChannel, windowSize int) error {
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for i := 0; i < windowSize; i++ {
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aliceNextRevoke, err := chanA.ExtendRevocationWindow()
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if err != nil {
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return err
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}
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if htlcs, err := chanB.ReceiveRevocation(aliceNextRevoke); err != nil {
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return err
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} else if htlcs != nil {
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return err
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}
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bobNextRevoke, err := chanB.ExtendRevocationWindow()
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if err != nil {
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return err
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}
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if htlcs, err := chanA.ReceiveRevocation(bobNextRevoke); err != nil {
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return err
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} else if htlcs != nil {
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return err
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}
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}
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return nil
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}
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// forceStateTransition executes the necessary interaction between the two
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// commitment state machines to transition to a new state locking in any
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// pending updates.
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func forceStateTransition(chanA, chanB *LightningChannel) error {
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aliceSig, err := chanA.SignNextCommitment()
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if err != nil {
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return err
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}
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if err := chanB.ReceiveNewCommitment(aliceSig); err != nil {
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return err
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}
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bobRevocation, err := chanB.RevokeCurrentCommitment()
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if err != nil {
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return err
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}
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bobSig, err := chanB.SignNextCommitment()
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if err != nil {
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return err
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}
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if _, err := chanA.ReceiveRevocation(bobRevocation); err != nil {
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return err
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}
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if err := chanA.ReceiveNewCommitment(bobSig); err != nil {
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return err
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}
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aliceRevocation, err := chanA.RevokeCurrentCommitment()
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if err != nil {
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return err
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}
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if _, err := chanB.ReceiveRevocation(aliceRevocation); err != nil {
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return err
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}
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return nil
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}
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// createTestChannels creates two test channels funded with 10 BTC, with 5 BTC
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// allocated to each side. Within the channel, Alice is the initiator.
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func createTestChannels(revocationWindow int) (*LightningChannel, *LightningChannel, func(), error) {
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aliceKeyPriv, aliceKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
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testWalletPrivKey)
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bobKeyPriv, bobKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
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bobsPrivKey)
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channelCapacity := btcutil.Amount(10 * 1e8)
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channelBal := channelCapacity / 2
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aliceDustLimit := btcutil.Amount(200)
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bobDustLimit := btcutil.Amount(1300)
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csvTimeoutAlice := uint32(5)
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csvTimeoutBob := uint32(4)
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witnessScript, _, err := GenFundingPkScript(aliceKeyPub.SerializeCompressed(),
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bobKeyPub.SerializeCompressed(), int64(channelCapacity))
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if err != nil {
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return nil, nil, nil, err
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}
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prevOut := &wire.OutPoint{
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Hash: chainhash.Hash(testHdSeed),
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Index: 0,
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}
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fundingTxIn := wire.NewTxIn(prevOut, nil, nil)
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bobRoot := DeriveRevocationRoot(bobKeyPriv, bobKeyPub, aliceKeyPub)
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bobPreimageProducer := shachain.NewRevocationProducer(*bobRoot)
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bobFirstRevoke, err := bobPreimageProducer.AtIndex(0)
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if err != nil {
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return nil, nil, nil, err
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}
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bobRevokeKey := DeriveRevocationPubkey(aliceKeyPub, bobFirstRevoke[:])
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aliceRoot := DeriveRevocationRoot(aliceKeyPriv, aliceKeyPub, bobKeyPub)
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alicePreimageProducer := shachain.NewRevocationProducer(*aliceRoot)
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aliceFirstRevoke, err := alicePreimageProducer.AtIndex(0)
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if err != nil {
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return nil, nil, nil, err
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}
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aliceRevokeKey := DeriveRevocationPubkey(bobKeyPub, aliceFirstRevoke[:])
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aliceCommitTx, err := CreateCommitTx(fundingTxIn, aliceKeyPub,
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bobKeyPub, aliceRevokeKey, csvTimeoutAlice, channelBal, channelBal, aliceDustLimit)
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if err != nil {
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return nil, nil, nil, err
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}
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bobCommitTx, err := CreateCommitTx(fundingTxIn, bobKeyPub,
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aliceKeyPub, bobRevokeKey, csvTimeoutBob, channelBal, channelBal, bobDustLimit)
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if err != nil {
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return nil, nil, nil, err
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}
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alicePath, err := ioutil.TempDir("", "alicedb")
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dbAlice, err := channeldb.Open(alicePath)
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if err != nil {
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return nil, nil, nil, err
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}
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bobPath, err := ioutil.TempDir("", "bobdb")
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dbBob, err := channeldb.Open(bobPath)
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if err != nil {
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return nil, nil, nil, err
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}
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var obsfucator [StateHintSize]byte
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copy(obsfucator[:], aliceFirstRevoke[:])
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estimator := &StaticFeeEstimator{24, 6}
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feePerKw := btcutil.Amount(estimator.EstimateFeePerWeight(1) * 1000)
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aliceChannelState := &channeldb.OpenChannel{
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IdentityPub: aliceKeyPub,
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ChanID: prevOut,
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ChanType: channeldb.SingleFunder,
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FeePerKw: feePerKw,
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IsInitiator: true,
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StateHintObsfucator: obsfucator,
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OurCommitKey: aliceKeyPub,
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TheirCommitKey: bobKeyPub,
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Capacity: channelCapacity,
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OurBalance: channelBal,
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TheirBalance: channelBal,
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OurCommitTx: aliceCommitTx,
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OurCommitSig: bytes.Repeat([]byte{1}, 71),
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FundingOutpoint: prevOut,
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OurMultiSigKey: aliceKeyPub,
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TheirMultiSigKey: bobKeyPub,
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FundingWitnessScript: witnessScript,
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LocalCsvDelay: csvTimeoutAlice,
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RemoteCsvDelay: csvTimeoutBob,
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TheirCurrentRevocation: bobRevokeKey,
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RevocationProducer: alicePreimageProducer,
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RevocationStore: shachain.NewRevocationStore(),
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TheirDustLimit: bobDustLimit,
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OurDustLimit: aliceDustLimit,
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Db: dbAlice,
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}
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bobChannelState := &channeldb.OpenChannel{
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IdentityPub: bobKeyPub,
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FeePerKw: feePerKw,
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ChanID: prevOut,
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ChanType: channeldb.SingleFunder,
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IsInitiator: false,
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StateHintObsfucator: obsfucator,
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OurCommitKey: bobKeyPub,
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TheirCommitKey: aliceKeyPub,
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Capacity: channelCapacity,
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OurBalance: channelBal,
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TheirBalance: channelBal,
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OurCommitTx: bobCommitTx,
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OurCommitSig: bytes.Repeat([]byte{1}, 71),
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FundingOutpoint: prevOut,
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OurMultiSigKey: bobKeyPub,
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TheirMultiSigKey: aliceKeyPub,
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FundingWitnessScript: witnessScript,
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LocalCsvDelay: csvTimeoutBob,
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RemoteCsvDelay: csvTimeoutAlice,
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TheirCurrentRevocation: aliceRevokeKey,
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RevocationProducer: bobPreimageProducer,
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RevocationStore: shachain.NewRevocationStore(),
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TheirDustLimit: aliceDustLimit,
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OurDustLimit: bobDustLimit,
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Db: dbBob,
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}
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cleanUpFunc := func() {
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os.RemoveAll(bobPath)
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os.RemoveAll(alicePath)
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}
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aliceSigner := &mockSigner{aliceKeyPriv}
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bobSigner := &mockSigner{bobKeyPriv}
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notifier := &mockNotfier{}
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channelAlice, err := NewLightningChannel(aliceSigner, notifier,
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estimator, aliceChannelState)
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if err != nil {
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return nil, nil, nil, err
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}
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channelBob, err := NewLightningChannel(bobSigner, notifier,
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estimator, bobChannelState)
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if err != nil {
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return nil, nil, nil, err
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}
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// Now that the channel are open, simulate the start of a session by
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// having Alice and Bob extend their revocation windows to each other.
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err = initRevocationWindows(channelAlice, channelBob, revocationWindow)
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if err != nil {
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return nil, nil, nil, err
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}
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return channelAlice, channelBob, cleanUpFunc, nil
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}
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// calcStaticFee calculates appropriate fees for commitment transactions. This
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// function provides a simple way to allow test balance assertions to take fee
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// calculations into account.
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// TODO(bvu): Refactor when dynamic fee estimation is added.
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func calcStaticFee(numHTLCs int) btcutil.Amount {
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const (
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commitWeight = btcutil.Amount(724)
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htlcWeight = 172
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feePerKw = btcutil.Amount(24/4) * 1000
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)
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return feePerKw * (commitWeight +
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btcutil.Amount(htlcWeight*numHTLCs)) / 1000
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}
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// TestSimpleAddSettleWorkflow tests a simple channel scenario wherein the
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// local node (Alice in this case) creates a new outgoing HTLC to bob, commits
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// this change, then bob immediately commits a settlement of the HTLC after the
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// initial add is fully committed in both commit chains.
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//
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// TODO(roasbeef): write higher level framework to exercise various states of
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// the state machine
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// * DSL language perhaps?
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// * constructed via input/output files
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func TestSimpleAddSettleWorkflow(t *testing.T) {
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t.Parallel()
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// Create a test channel which will be used for the duration of this
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// unittest. The channel will be funded evenly with Alice having 5 BTC,
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// and Bob having 5 BTC.
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aliceChannel, bobChannel, cleanUp, err := createTestChannels(1)
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if err != nil {
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t.Fatalf("unable to create test channels: %v", err)
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}
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defer cleanUp()
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// The edge of the revocation window for both sides should be 1 at this
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// point.
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if aliceChannel.revocationWindowEdge != 1 {
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t.Fatalf("alice revocation window not incremented, is %v should be %v",
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aliceChannel.revocationWindowEdge, 1)
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}
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if bobChannel.revocationWindowEdge != 1 {
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t.Fatalf("alice revocation window not incremented, is %v should be %v",
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bobChannel.revocationWindowEdge, 1)
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}
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paymentPreimage := bytes.Repeat([]byte{1}, 32)
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paymentHash := sha256.Sum256(paymentPreimage)
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htlc := &lnwire.UpdateAddHTLC{
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PaymentHash: paymentHash,
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Amount: btcutil.SatoshiPerBitcoin,
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Expiry: uint32(5),
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}
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// First Alice adds the outgoing HTLC to her local channel's state
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// update log. Then Alice sends this wire message over to Bob who also
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// adds this htlc to his local state update log.
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if _, err := aliceChannel.AddHTLC(htlc); err != nil {
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t.Fatalf("unable to add htlc: %v", err)
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}
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if _, err := bobChannel.ReceiveHTLC(htlc); err != nil {
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t.Fatalf("unable to recv htlc: %v", err)
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}
|
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|
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// Next alice commits this change by sending a signature message.
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aliceSig, err := aliceChannel.SignNextCommitment()
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if err != nil {
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t.Fatalf("alice unable to sign commitment: %v", err)
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}
|
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|
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// Bob receives this signature message, revokes his prior commitment
|
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// given to him by Alice,a nd then finally send a signature for Alice's
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// commitment transaction.
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if err := bobChannel.ReceiveNewCommitment(aliceSig); err != nil {
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t.Fatalf("bob unable to process alice's new commitment: %v", err)
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}
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bobRevocation, err := bobChannel.RevokeCurrentCommitment()
|
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if err != nil {
|
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t.Fatalf("unable to generate bob revocation: %v", err)
|
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}
|
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bobSig, err := bobChannel.SignNextCommitment()
|
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if err != nil {
|
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t.Fatalf("bob unable to sign alice's commitment: %v", err)
|
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}
|
|
|
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// Alice then processes this revocation, sending her own recovation for
|
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// her prior commitment transaction. Alice shouldn't have any HTLCs to
|
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// forward since she's sending an outgoing HTLC.
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if htlcs, err := aliceChannel.ReceiveRevocation(bobRevocation); err != nil {
|
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t.Fatalf("alice unable to rocess bob's revocation: %v", err)
|
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} else if len(htlcs) != 0 {
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t.Fatalf("alice forwards %v htlcs, should forward none: ", len(htlcs))
|
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}
|
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|
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// Alice then processes bob's signature, and generates a revocation for
|
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// bob.
|
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if err := aliceChannel.ReceiveNewCommitment(bobSig); err != nil {
|
|
t.Fatalf("alice unable to process bob's new commitment: %v", err)
|
|
}
|
|
|
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aliceRevocation, err := aliceChannel.RevokeCurrentCommitment()
|
|
if err != nil {
|
|
t.Fatalf("unable to revoke alice channel: %v", err)
|
|
}
|
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|
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// Finally Bob processes Alice's revocation, at this point the new HTLC
|
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// is fully locked in within both commitment transactions. Bob should
|
|
// also be able to forward an HTLC now that the HTLC has been locked
|
|
// into both commitment transactions.
|
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if htlcs, err := bobChannel.ReceiveRevocation(aliceRevocation); err != nil {
|
|
t.Fatalf("bob unable to process alive's revocation: %v", err)
|
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} else if len(htlcs) != 1 {
|
|
t.Fatalf("bob should be able to forward an HTLC, instead can "+
|
|
"forward %v", len(htlcs))
|
|
}
|
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|
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// At this point, both sides should have the proper number of satoshis
|
|
// sent, and commitment height updated within their local channel
|
|
// state.
|
|
aliceSent := uint64(0)
|
|
bobSent := uint64(0)
|
|
|
|
if aliceChannel.channelState.TotalSatoshisSent != aliceSent {
|
|
t.Fatalf("alice has incorrect satoshis sent: %v vs %v",
|
|
aliceChannel.channelState.TotalSatoshisSent, aliceSent)
|
|
}
|
|
if aliceChannel.channelState.TotalSatoshisReceived != bobSent {
|
|
t.Fatalf("alice has incorrect satoshis received %v vs %v",
|
|
aliceChannel.channelState.TotalSatoshisReceived, bobSent)
|
|
}
|
|
if bobChannel.channelState.TotalSatoshisSent != bobSent {
|
|
t.Fatalf("bob has incorrect satoshis sent %v vs %v",
|
|
bobChannel.channelState.TotalSatoshisSent, bobSent)
|
|
}
|
|
if bobChannel.channelState.TotalSatoshisReceived != aliceSent {
|
|
t.Fatalf("bob has incorrect satoshis received %v vs %v",
|
|
bobChannel.channelState.TotalSatoshisReceived, aliceSent)
|
|
}
|
|
if bobChannel.currentHeight != 1 {
|
|
t.Fatalf("bob has incorrect commitment height, %v vs %v",
|
|
bobChannel.currentHeight, 1)
|
|
}
|
|
if aliceChannel.currentHeight != 1 {
|
|
t.Fatalf("alice has incorrect commitment height, %v vs %v",
|
|
aliceChannel.currentHeight, 1)
|
|
}
|
|
|
|
// Alice's revocation window should now be one beyond the size of the
|
|
// initial window. Same goes for Bob.
|
|
if aliceChannel.revocationWindowEdge != 2 {
|
|
t.Fatalf("alice revocation window not incremented, is %v should be %v",
|
|
aliceChannel.revocationWindowEdge, 2)
|
|
}
|
|
if bobChannel.revocationWindowEdge != 2 {
|
|
t.Fatalf("alice revocation window not incremented, is %v should be %v",
|
|
bobChannel.revocationWindowEdge, 2)
|
|
}
|
|
|
|
// Now we'll repeat a similar exchange, this time with Bob settling the
|
|
// HTLC once he learns of the preimage.
|
|
var preimage [32]byte
|
|
copy(preimage[:], paymentPreimage)
|
|
settleIndex, err := bobChannel.SettleHTLC(preimage)
|
|
if err != nil {
|
|
t.Fatalf("bob unable to settle inbound htlc: %v", err)
|
|
}
|
|
if err := aliceChannel.ReceiveHTLCSettle(preimage, settleIndex); err != nil {
|
|
t.Fatalf("alice unable to accept settle of outbound htlc: %v", err)
|
|
}
|
|
|
|
bobSig2, err := bobChannel.SignNextCommitment()
|
|
if err != nil {
|
|
t.Fatalf("bob unable to sign settle commitment: %v", err)
|
|
}
|
|
if err := aliceChannel.ReceiveNewCommitment(bobSig2); err != nil {
|
|
t.Fatalf("alice unable to process bob's new commitment: %v", err)
|
|
}
|
|
|
|
aliceRevocation2, err := aliceChannel.RevokeCurrentCommitment()
|
|
if err != nil {
|
|
t.Fatalf("alice unable to generate revocation: %v", err)
|
|
}
|
|
aliceSig2, err := aliceChannel.SignNextCommitment()
|
|
if err != nil {
|
|
t.Fatalf("alice unable to sign new commitment: %v", err)
|
|
}
|
|
|
|
if htlcs, err := bobChannel.ReceiveRevocation(aliceRevocation2); err != nil {
|
|
t.Fatalf("bob unable to process alice's revocation: %v", err)
|
|
} else if len(htlcs) != 0 {
|
|
t.Fatalf("bob shouldn't forward any HTLCs after outgoing settle, "+
|
|
"instead can forward: %v", spew.Sdump(htlcs))
|
|
}
|
|
if err := bobChannel.ReceiveNewCommitment(aliceSig2); err != nil {
|
|
t.Fatalf("bob unable to process alice's new commitment: %v", err)
|
|
}
|
|
|
|
bobRevocation2, err := bobChannel.RevokeCurrentCommitment()
|
|
if err != nil {
|
|
t.Fatalf("bob unable to revoke commitment: %v", err)
|
|
}
|
|
|
|
if htlcs, err := aliceChannel.ReceiveRevocation(bobRevocation2); err != nil {
|
|
t.Fatalf("alice unable to process bob's revocation: %v", err)
|
|
} else if len(htlcs) != 1 {
|
|
// Alice should now be able to forward the settlement HTLC to
|
|
// any down stream peers.
|
|
t.Fatalf("alice should be able to forward a single HTLC, "+
|
|
"instead can forward %v: %v", len(htlcs), spew.Sdump(htlcs))
|
|
}
|
|
|
|
// At this point, Bob should have 6 BTC settled, with Alice still having
|
|
// 4 BTC. Alice's channel should show 1 BTC sent and Bob's channel should
|
|
// show 1 BTC received. They should also be at commitment height two,
|
|
// with the revocation window extended by by 1 (5).
|
|
satoshisTransferred := uint64(100000000)
|
|
if aliceChannel.channelState.TotalSatoshisSent != satoshisTransferred {
|
|
t.Fatalf("alice satoshis sent incorrect %v vs %v expected",
|
|
aliceChannel.channelState.TotalSatoshisSent,
|
|
satoshisTransferred)
|
|
}
|
|
if aliceChannel.channelState.TotalSatoshisReceived != 0 {
|
|
t.Fatalf("alice satoshis received incorrect %v vs %v expected",
|
|
aliceChannel.channelState.TotalSatoshisSent, 0)
|
|
}
|
|
if bobChannel.channelState.TotalSatoshisReceived != satoshisTransferred {
|
|
t.Fatalf("bob satoshis received incorrect %v vs %v expected",
|
|
bobChannel.channelState.TotalSatoshisReceived,
|
|
satoshisTransferred)
|
|
}
|
|
if bobChannel.channelState.TotalSatoshisSent != 0 {
|
|
t.Fatalf("bob satoshis sent incorrect %v vs %v expected",
|
|
bobChannel.channelState.TotalSatoshisReceived, 0)
|
|
}
|
|
if bobChannel.currentHeight != 2 {
|
|
t.Fatalf("bob has incorrect commitment height, %v vs %v",
|
|
bobChannel.currentHeight, 2)
|
|
}
|
|
if aliceChannel.currentHeight != 2 {
|
|
t.Fatalf("alice has incorrect commitment height, %v vs %v",
|
|
aliceChannel.currentHeight, 2)
|
|
}
|
|
if aliceChannel.revocationWindowEdge != 3 {
|
|
t.Fatalf("alice revocation window not incremented, is %v "+
|
|
"should be %v", aliceChannel.revocationWindowEdge, 3)
|
|
}
|
|
if bobChannel.revocationWindowEdge != 3 {
|
|
t.Fatalf("alice revocation window not incremented, is %v "+
|
|
"should be %v", bobChannel.revocationWindowEdge, 3)
|
|
}
|
|
|
|
// The logs of both sides should now be cleared since the entry adding
|
|
// the HTLC should have been removed once both sides receive the
|
|
// revocation.
|
|
if aliceChannel.localUpdateLog.Len() != 0 {
|
|
t.Fatalf("alice's local not updated, should be empty, has %v "+
|
|
"entries instead", aliceChannel.localUpdateLog.Len())
|
|
}
|
|
if aliceChannel.remoteUpdateLog.Len() != 0 {
|
|
t.Fatalf("alice's remote not updated, should be empty, has %v "+
|
|
"entries instead", aliceChannel.remoteUpdateLog.Len())
|
|
}
|
|
if len(aliceChannel.localUpdateLog.updateIndex) != 0 {
|
|
t.Fatalf("alice's local log index not cleared, should be empty but "+
|
|
"has %v entries", len(aliceChannel.localUpdateLog.updateIndex))
|
|
}
|
|
if len(aliceChannel.remoteUpdateLog.updateIndex) != 0 {
|
|
t.Fatalf("alice's remote log index not cleared, should be empty but "+
|
|
"has %v entries", len(aliceChannel.remoteUpdateLog.updateIndex))
|
|
}
|
|
}
|
|
|
|
// TestCheckCommitTxSize checks that estimation size of commitment
|
|
// transaction with some degree of error corresponds to the actual size.
|
|
func TestCheckCommitTxSize(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
checkSize := func(channel *LightningChannel, count int) {
|
|
// Due to variable size of the signatures (70-73) in
|
|
// witness script actual size of commitment transaction might
|
|
// be lower on 6 weight.
|
|
BaseCommitmentTxSizeEstimationError := 6
|
|
|
|
commitTx, err := channel.getSignedCommitTx()
|
|
if err != nil {
|
|
t.Fatalf("unable to initiate alice force close: %v", err)
|
|
}
|
|
|
|
actualCost := blockchain.GetTransactionWeight(btcutil.NewTx(commitTx))
|
|
estimatedCost := estimateCommitTxWeight(count, false)
|
|
|
|
diff := int(estimatedCost - actualCost)
|
|
if 0 > diff || BaseCommitmentTxSizeEstimationError < diff {
|
|
t.Fatalf("estimation is wrong, diff: %v", diff)
|
|
}
|
|
|
|
}
|
|
|
|
createHTLC := func(i int) (*lnwire.UpdateAddHTLC, [32]byte) {
|
|
preimage := bytes.Repeat([]byte{byte(i)}, 32)
|
|
paymentHash := sha256.Sum256(preimage)
|
|
|
|
var returnPreimage [32]byte
|
|
copy(returnPreimage[:], preimage)
|
|
|
|
return &lnwire.UpdateAddHTLC{
|
|
PaymentHash: paymentHash,
|
|
Amount: btcutil.Amount(1e7),
|
|
Expiry: uint32(5),
|
|
}, returnPreimage
|
|
}
|
|
|
|
// Create a test channel which will be used for the duration of this
|
|
// unittest. The channel will be funded evenly with Alice having 5 BTC,
|
|
// and Bob having 5 BTC.
|
|
aliceChannel, bobChannel, cleanUp, err := createTestChannels(1)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test channels: %v", err)
|
|
}
|
|
defer cleanUp()
|
|
|
|
// Check that weight estimation of the commitment transaction without
|
|
// HTLCs is right.
|
|
checkSize(aliceChannel, 0)
|
|
checkSize(bobChannel, 0)
|
|
|
|
// Adding HTLCs and check that size stays in allowable estimation
|
|
// error window.
|
|
for i := 1; i <= 10; i++ {
|
|
htlc, _ := createHTLC(i)
|
|
|
|
if _, err := aliceChannel.AddHTLC(htlc); err != nil {
|
|
t.Fatalf("alice unable to add htlc: %v", err)
|
|
}
|
|
if _, err := bobChannel.ReceiveHTLC(htlc); err != nil {
|
|
t.Fatalf("bob unable to receive htlc: %v", err)
|
|
}
|
|
|
|
if err := forceStateTransition(aliceChannel, bobChannel); err != nil {
|
|
t.Fatalf("unable to complete state update: %v", err)
|
|
}
|
|
checkSize(aliceChannel, i)
|
|
checkSize(bobChannel, i)
|
|
}
|
|
|
|
// Settle HTLCs and check that estimation is counting cost of settle
|
|
// HTLCs properly.
|
|
for i := 10; i >= 1; i-- {
|
|
_, preimage := createHTLC(i)
|
|
|
|
settleIndex, err := bobChannel.SettleHTLC(preimage)
|
|
if err != nil {
|
|
t.Fatalf("bob unable to settle inbound htlc: %v", err)
|
|
}
|
|
err = aliceChannel.ReceiveHTLCSettle(preimage, settleIndex)
|
|
if err != nil {
|
|
t.Fatalf("alice unable to accept settle of outbound htlc: %v", err)
|
|
}
|
|
|
|
if err := forceStateTransition(bobChannel, aliceChannel); err != nil {
|
|
t.Fatalf("unable to complete state update: %v", err)
|
|
}
|
|
checkSize(aliceChannel, i-1)
|
|
checkSize(bobChannel, i-1)
|
|
}
|
|
}
|
|
|
|
func TestCooperativeChannelClosure(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Create a test channel which will be used for the duration of this
|
|
// unittest. The channel will be funded evenly with Alice having 5 BTC,
|
|
// and Bob having 5 BTC.
|
|
aliceChannel, bobChannel, cleanUp, err := createTestChannels(1)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test channels: %v", err)
|
|
}
|
|
defer cleanUp()
|
|
|
|
aliceFeeRate := uint64(aliceChannel.channelState.FeePerKw)
|
|
bobFeeRate := uint64(bobChannel.channelState.FeePerKw)
|
|
|
|
// First we test creating of cooperative close proposals.
|
|
aliceSig, _, err := aliceChannel.CreateCloseProposal(
|
|
aliceFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to create alice coop close proposal: %v", err)
|
|
}
|
|
aliceCloseSig := append(aliceSig, byte(txscript.SigHashAll))
|
|
|
|
bobSig, _, err := bobChannel.CreateCloseProposal(bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to create bob coop close proposal: %v", err)
|
|
}
|
|
bobCloseSig := append(bobSig, byte(txscript.SigHashAll))
|
|
|
|
aliceCloseTx, err := bobChannel.CompleteCooperativeClose(bobCloseSig,
|
|
aliceCloseSig, bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to complete alice cooperative close: %v", err)
|
|
}
|
|
bobCloseSha := aliceCloseTx.TxHash()
|
|
|
|
bobCloseTx, err := aliceChannel.CompleteCooperativeClose(aliceCloseSig,
|
|
bobCloseSig, aliceFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to complete bob cooperative close: %v", err)
|
|
}
|
|
aliceCloseSha := bobCloseTx.TxHash()
|
|
|
|
if bobCloseSha != aliceCloseSha {
|
|
t.Fatalf("alice and bob close transactions don't match: %v", err)
|
|
}
|
|
}
|
|
|
|
// TestForceClose checks that the resulting ForceCloseSummary is correct when
|
|
// a peer is ForceClosing the channel. Will check outputs both above and below
|
|
// the dust limit.
|
|
func TestForceClose(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
createHTLC := func(data, amount btcutil.Amount) (*lnwire.UpdateAddHTLC,
|
|
[32]byte) {
|
|
preimage := bytes.Repeat([]byte{byte(data)}, 32)
|
|
paymentHash := sha256.Sum256(preimage)
|
|
|
|
var returnPreimage [32]byte
|
|
copy(returnPreimage[:], preimage)
|
|
|
|
return &lnwire.UpdateAddHTLC{
|
|
PaymentHash: paymentHash,
|
|
Amount: amount,
|
|
Expiry: uint32(5),
|
|
}, returnPreimage
|
|
}
|
|
|
|
// Create a test channel which will be used for the duration of this
|
|
// unittest. The channel will be funded evenly with Alice having 5 BTC,
|
|
// and Bob having 5 BTC.
|
|
aliceChannel, bobChannel, cleanUp, err := createTestChannels(3)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test channels: %v", err)
|
|
}
|
|
defer cleanUp()
|
|
|
|
htlcAmount := btcutil.Amount(500)
|
|
|
|
aliceAmount := aliceChannel.channelState.OurBalance
|
|
bobAmount := bobChannel.channelState.OurBalance
|
|
|
|
closeSummary, err := aliceChannel.ForceClose()
|
|
if err != nil {
|
|
t.Fatalf("unable to force close channel: %v", err)
|
|
}
|
|
|
|
// The SelfOutputSignDesc should be non-nil since the outout to-self is non-dust.
|
|
if closeSummary.SelfOutputSignDesc == nil {
|
|
t.Fatalf("alice fails to include to-self output in ForceCloseSummary")
|
|
} else {
|
|
if closeSummary.SelfOutputSignDesc.PubKey !=
|
|
aliceChannel.channelState.OurCommitKey {
|
|
t.Fatalf("alice incorrect pubkey in SelfOutputSignDesc")
|
|
}
|
|
if closeSummary.SelfOutputSignDesc.Output.Value != int64(aliceAmount) {
|
|
t.Fatalf("alice incorrect output value in SelfOutputSignDesc, "+
|
|
"expected %v, got %v",
|
|
aliceChannel.channelState.OurBalance,
|
|
closeSummary.SelfOutputSignDesc.Output.Value)
|
|
}
|
|
}
|
|
|
|
if closeSummary.SelfOutputMaturity != aliceChannel.channelState.LocalCsvDelay {
|
|
t.Fatalf("alice: incorrect local CSV delay in ForceCloseSummary, "+
|
|
"expected %v, got %v", aliceChannel.channelState.LocalCsvDelay,
|
|
closeSummary.SelfOutputMaturity)
|
|
}
|
|
|
|
closeTxHash := closeSummary.CloseTx.TxHash()
|
|
commitTxHash := aliceChannel.channelState.OurCommitTx.TxHash()
|
|
if !bytes.Equal(closeTxHash[:], commitTxHash[:]) {
|
|
t.Fatalf("alice: incorrect close transaction txid")
|
|
}
|
|
|
|
// Check the same for Bobs' ForceCloseSummary
|
|
closeSummary, err = bobChannel.ForceClose()
|
|
if err != nil {
|
|
t.Fatalf("unable to force close channel: %v", err)
|
|
}
|
|
if closeSummary.SelfOutputSignDesc == nil {
|
|
t.Fatalf("bob fails to include to-self output in ForceCloseSummary")
|
|
} else {
|
|
if closeSummary.SelfOutputSignDesc.PubKey !=
|
|
bobChannel.channelState.OurCommitKey {
|
|
t.Fatalf("bob incorrect pubkey in SelfOutputSignDesc")
|
|
}
|
|
if closeSummary.SelfOutputSignDesc.Output.Value != int64(bobAmount) {
|
|
t.Fatalf("bob incorrect output value in SelfOutputSignDesc, "+
|
|
"expected %v, got %v",
|
|
bobChannel.channelState.OurBalance,
|
|
closeSummary.SelfOutputSignDesc.Output.Value)
|
|
}
|
|
}
|
|
|
|
if closeSummary.SelfOutputMaturity != bobChannel.channelState.LocalCsvDelay {
|
|
t.Fatalf("bob: incorrect local CSV delay in ForceCloseSummary, "+
|
|
"expected %v, got %v", bobChannel.channelState.LocalCsvDelay,
|
|
closeSummary.SelfOutputMaturity)
|
|
}
|
|
|
|
closeTxHash = closeSummary.CloseTx.TxHash()
|
|
commitTxHash = bobChannel.channelState.OurCommitTx.TxHash()
|
|
if !bytes.Equal(closeTxHash[:], commitTxHash[:]) {
|
|
t.Fatalf("bob: incorrect close transaction txid")
|
|
}
|
|
|
|
// "re-open" channels
|
|
aliceChannel.status = channelOpen
|
|
bobChannel.status = channelOpen
|
|
aliceChannel.ForceCloseSignal = make(chan struct{})
|
|
bobChannel.ForceCloseSignal = make(chan struct{})
|
|
|
|
// Have Bobs' to-self output be below her dust limit and check
|
|
// ForceCloseSummary again on both peers.
|
|
htlc, preimage := createHTLC(0, bobAmount-htlcAmount)
|
|
if _, err := bobChannel.AddHTLC(htlc); err != nil {
|
|
t.Fatalf("alice unable to add htlc: %v", err)
|
|
}
|
|
if _, err := aliceChannel.ReceiveHTLC(htlc); err != nil {
|
|
t.Fatalf("bob unable to receive htlc: %v", err)
|
|
}
|
|
if err := forceStateTransition(bobChannel, aliceChannel); err != nil {
|
|
t.Fatalf("Can't update the channel state: %v", err)
|
|
}
|
|
|
|
// Settle HTLC and sign new commitment.
|
|
settleIndex, err := aliceChannel.SettleHTLC(preimage)
|
|
if err != nil {
|
|
t.Fatalf("bob unable to settle inbound htlc: %v", err)
|
|
}
|
|
err = bobChannel.ReceiveHTLCSettle(preimage, settleIndex)
|
|
if err != nil {
|
|
t.Fatalf("alice unable to accept settle of outbound htlc: %v", err)
|
|
}
|
|
if err := forceStateTransition(aliceChannel, bobChannel); err != nil {
|
|
t.Fatalf("Can't update the channel state: %v", err)
|
|
}
|
|
|
|
aliceAmount = aliceChannel.channelState.OurBalance
|
|
bobAmount = bobChannel.channelState.OurBalance
|
|
|
|
closeSummary, err = aliceChannel.ForceClose()
|
|
if err != nil {
|
|
t.Fatalf("unable to force close channel: %v", err)
|
|
}
|
|
|
|
// Alices' to-self output should still be in the commitment transaction.
|
|
if closeSummary.SelfOutputSignDesc == nil {
|
|
t.Fatalf("alice fails to include to-self output in ForceCloseSummary")
|
|
} else {
|
|
if closeSummary.SelfOutputSignDesc.PubKey !=
|
|
aliceChannel.channelState.OurCommitKey {
|
|
t.Fatalf("alice incorrect pubkey in SelfOutputSignDesc")
|
|
}
|
|
if closeSummary.SelfOutputSignDesc.Output.Value !=
|
|
int64(aliceAmount) {
|
|
t.Fatalf("alice incorrect output value in SelfOutputSignDesc, "+
|
|
"expected %v, got %v",
|
|
aliceChannel.channelState.OurBalance,
|
|
closeSummary.SelfOutputSignDesc.Output.Value)
|
|
}
|
|
}
|
|
|
|
if closeSummary.SelfOutputMaturity != aliceChannel.channelState.LocalCsvDelay {
|
|
t.Fatalf("alice: incorrect local CSV delay in ForceCloseSummary, "+
|
|
"expected %v, got %v", aliceChannel.channelState.LocalCsvDelay,
|
|
closeSummary.SelfOutputMaturity)
|
|
}
|
|
|
|
closeTxHash = closeSummary.CloseTx.TxHash()
|
|
commitTxHash = aliceChannel.channelState.OurCommitTx.TxHash()
|
|
if !bytes.Equal(closeTxHash[:], commitTxHash[:]) {
|
|
t.Fatalf("alice: incorrect close transaction txid")
|
|
}
|
|
|
|
closeSummary, err = bobChannel.ForceClose()
|
|
if err != nil {
|
|
t.Fatalf("unable to force close channel: %v", err)
|
|
}
|
|
// Bob's to-self output is below Bob's dust value and should be
|
|
// reflected in the ForceCloseSummary.
|
|
if closeSummary.SelfOutputSignDesc != nil {
|
|
t.Fatalf("bob incorrectly includes to-self output in ForceCloseSummary")
|
|
}
|
|
|
|
closeTxHash = closeSummary.CloseTx.TxHash()
|
|
commitTxHash = bobChannel.channelState.OurCommitTx.TxHash()
|
|
if !bytes.Equal(closeTxHash[:], commitTxHash[:]) {
|
|
t.Fatalf("bob: incorrect close transaction txid")
|
|
}
|
|
}
|
|
|
|
// TestCheckDustLimit checks that unsettled HTLC with dust limit not included in
|
|
// commitment transaction as output, but sender balance is decreased (thereby all
|
|
// unsettled dust HTLCs will go to miners fee).
|
|
func TestCheckDustLimit(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
createHTLC := func(data, amount btcutil.Amount) (*lnwire.UpdateAddHTLC,
|
|
[32]byte) {
|
|
preimage := bytes.Repeat([]byte{byte(data)}, 32)
|
|
paymentHash := sha256.Sum256(preimage)
|
|
|
|
var returnPreimage [32]byte
|
|
copy(returnPreimage[:], preimage)
|
|
|
|
return &lnwire.UpdateAddHTLC{
|
|
PaymentHash: paymentHash,
|
|
Amount: amount,
|
|
Expiry: uint32(5),
|
|
}, returnPreimage
|
|
}
|
|
|
|
// Create a test channel which will be used for the duration of this
|
|
// unittest. The channel will be funded evenly with Alice having 5 BTC,
|
|
// and Bob having 5 BTC.
|
|
aliceChannel, bobChannel, cleanUp, err := createTestChannels(3)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test channels: %v", err)
|
|
}
|
|
defer cleanUp()
|
|
|
|
assertChannelState := func(chanA, chanB *LightningChannel, numOutsA,
|
|
numOutsB int, amountSentA, amountSentB uint64) {
|
|
|
|
commitment := chanA.localCommitChain.tip()
|
|
if len(commitment.txn.TxOut) != numOutsA {
|
|
t.Fatalf("incorrect # of outputs: expected %v, got %v",
|
|
numOutsA, len(commitment.txn.TxOut))
|
|
}
|
|
commitment = chanB.localCommitChain.tip()
|
|
if len(commitment.txn.TxOut) != numOutsB {
|
|
t.Fatalf("Incorrect # of outputs: expected %v, got %v",
|
|
numOutsB, len(commitment.txn.TxOut))
|
|
}
|
|
|
|
if chanA.channelState.TotalSatoshisSent != amountSentA {
|
|
t.Fatalf("alice satoshis sent incorrect: expected %v, "+
|
|
"got %v", amountSentA,
|
|
chanA.channelState.TotalSatoshisSent)
|
|
}
|
|
if chanA.channelState.TotalSatoshisReceived != amountSentB {
|
|
t.Fatalf("alice satoshis received incorrect: expected"+
|
|
"%v, got %v", amountSentB,
|
|
chanA.channelState.TotalSatoshisReceived)
|
|
}
|
|
if chanB.channelState.TotalSatoshisSent != amountSentB {
|
|
t.Fatalf("bob satoshis sent incorrect: expected %v, "+
|
|
" got %v", amountSentB,
|
|
chanB.channelState.TotalSatoshisSent)
|
|
}
|
|
if chanB.channelState.TotalSatoshisReceived != amountSentA {
|
|
t.Fatalf("bob satoshis received incorrect: expected "+
|
|
"%v, got %v", amountSentA,
|
|
chanB.channelState.TotalSatoshisReceived)
|
|
}
|
|
}
|
|
|
|
aliceDustLimit := aliceChannel.channelState.OurDustLimit
|
|
bobDustLimit := bobChannel.channelState.OurDustLimit
|
|
htlcAmount := btcutil.Amount(500)
|
|
|
|
if !((htlcAmount > aliceDustLimit) && (bobDustLimit > htlcAmount)) {
|
|
t.Fatalf("htlc amount (%v) should be above Alice's dust limit (%v),"+
|
|
"and below Bob's dust limit (%v).", htlcAmount, aliceDustLimit,
|
|
bobDustLimit)
|
|
}
|
|
|
|
htlc, preimage := createHTLC(0, htlcAmount)
|
|
if _, err := aliceChannel.AddHTLC(htlc); err != nil {
|
|
t.Fatalf("alice unable to add htlc: %v", err)
|
|
}
|
|
if _, err := bobChannel.ReceiveHTLC(htlc); err != nil {
|
|
t.Fatalf("bob unable to receive htlc: %v", err)
|
|
}
|
|
if err := forceStateTransition(aliceChannel, bobChannel); err != nil {
|
|
t.Fatalf("Can't update the channel state: %v", err)
|
|
}
|
|
|
|
// First two outputs are payment to them and to us. If we encounter
|
|
// third output it means that dust HTLC was included. Their channel
|
|
// balance shouldn't change because, it will be changed only after HTLC
|
|
// will be settled.
|
|
|
|
// From Alice point of view HTLC's amount is bigger than dust limit.
|
|
// From Bob point of view HTLC's amount is lower then dust limit.
|
|
assertChannelState(aliceChannel, bobChannel, 3, 2, 0, 0)
|
|
|
|
// Settle HTLC and sign new commitment.
|
|
settleIndex, err := bobChannel.SettleHTLC(preimage)
|
|
if err != nil {
|
|
t.Fatalf("bob unable to settle inbound htlc: %v", err)
|
|
}
|
|
err = aliceChannel.ReceiveHTLCSettle(preimage, settleIndex)
|
|
if err != nil {
|
|
t.Fatalf("alice unable to accept settle of outbound htlc: %v", err)
|
|
}
|
|
if err := forceStateTransition(bobChannel, aliceChannel); err != nil {
|
|
t.Fatalf("state transition error: %v", err)
|
|
}
|
|
|
|
assertChannelState(aliceChannel, bobChannel, 2, 2, uint64(htlcAmount), 0)
|
|
|
|
// Next we will test when a non-HTLC output in the commitment
|
|
// transaction is below the dust limit. We create an HTLC that will
|
|
// only leave a small enough amount to Alice such that Bob will
|
|
// consider it a dust output.
|
|
// TODO(roasbeef): test needs to be fixed after reserves and proper
|
|
// rolling over of dust into fees is done
|
|
aliceAmount := btcutil.Amount(5e8)
|
|
htlcAmount2 := aliceAmount - btcutil.Amount(6100)
|
|
htlc, preimage = createHTLC(0, htlcAmount2)
|
|
if _, err := aliceChannel.AddHTLC(htlc); err != nil {
|
|
t.Fatalf("alice unable to add htlc: %v", err)
|
|
}
|
|
if _, err := bobChannel.ReceiveHTLC(htlc); err != nil {
|
|
t.Fatalf("bob unable to receive htlc: %v", err)
|
|
}
|
|
if err := forceStateTransition(aliceChannel, bobChannel); err != nil {
|
|
t.Fatalf("state transition error: %v", err)
|
|
}
|
|
|
|
// From Alice's point of view, her output is bigger than the dust limit
|
|
// From Bob's point of view, Alice's output is lower than the dust limit
|
|
assertChannelState(aliceChannel, bobChannel, 3, 2, uint64(htlcAmount), 0)
|
|
|
|
// Settle HTLC and sign new commitment.
|
|
settleIndex, err = bobChannel.SettleHTLC(preimage)
|
|
if err != nil {
|
|
t.Fatalf("bob unable to settle inbound htlc: %v", err)
|
|
}
|
|
err = aliceChannel.ReceiveHTLCSettle(preimage, settleIndex)
|
|
if err != nil {
|
|
t.Fatalf("alice unable to accept settle of outbound htlc: %v", err)
|
|
}
|
|
if err := forceStateTransition(bobChannel, aliceChannel); err != nil {
|
|
t.Fatalf("state transition error: %v", err)
|
|
}
|
|
|
|
assertChannelState(aliceChannel, bobChannel, 2, 1,
|
|
uint64(htlcAmount+htlcAmount2), 0)
|
|
}
|
|
|
|
func TestStateUpdatePersistence(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Create a test channel which will be used for the duration of this
|
|
// unittest. The channel will be funded evenly with Alice having 5 BTC,
|
|
// and Bob having 5 BTC.
|
|
aliceChannel, bobChannel, cleanUp, err := createTestChannels(1)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test channels: %v", err)
|
|
}
|
|
defer cleanUp()
|
|
|
|
if err := aliceChannel.channelState.FullSync(); err != nil {
|
|
t.Fatalf("unable to sync alice's channel: %v", err)
|
|
}
|
|
if err := bobChannel.channelState.FullSync(); err != nil {
|
|
t.Fatalf("unable to sync bob's channel: %v", err)
|
|
}
|
|
|
|
const numHtlcs = 4
|
|
|
|
// Alice adds 3 HTLCs to the update log, while Bob adds a single HTLC.
|
|
var alicePreimage [32]byte
|
|
copy(alicePreimage[:], bytes.Repeat([]byte{0xaa}, 32))
|
|
var bobPreimage [32]byte
|
|
copy(bobPreimage[:], bytes.Repeat([]byte{0xbb}, 32))
|
|
for i := 0; i < 3; i++ {
|
|
rHash := sha256.Sum256(alicePreimage[:])
|
|
h := &lnwire.UpdateAddHTLC{
|
|
PaymentHash: rHash,
|
|
Amount: btcutil.Amount(5000),
|
|
Expiry: uint32(10),
|
|
}
|
|
|
|
if _, err := aliceChannel.AddHTLC(h); err != nil {
|
|
t.Fatalf("unable to add alice's htlc: %v", err)
|
|
}
|
|
if _, err := bobChannel.ReceiveHTLC(h); err != nil {
|
|
t.Fatalf("unable to recv alice's htlc: %v", err)
|
|
}
|
|
}
|
|
rHash := sha256.Sum256(bobPreimage[:])
|
|
bobh := &lnwire.UpdateAddHTLC{
|
|
PaymentHash: rHash,
|
|
Amount: btcutil.Amount(5000),
|
|
Expiry: uint32(10),
|
|
}
|
|
if _, err := bobChannel.AddHTLC(bobh); err != nil {
|
|
t.Fatalf("unable to add bob's htlc: %v", err)
|
|
}
|
|
if _, err := aliceChannel.ReceiveHTLC(bobh); err != nil {
|
|
t.Fatalf("unable to recv bob's htlc: %v", err)
|
|
}
|
|
|
|
// Next, Alice initiates a state transition to include the HTLC's she
|
|
// added above in a new commitment state.
|
|
if err := forceStateTransition(aliceChannel, bobChannel); err != nil {
|
|
t.Fatalf("unable to complete alice's state transition: %v", err)
|
|
}
|
|
|
|
// Since the HTLC Bob sent wasn't included in Bob's version of the
|
|
// commitment transaction (but it was in Alice's, as he ACK'd her
|
|
// changes before creating a new state), Bob needs to trigger another
|
|
// state update in order to re-sync their states.
|
|
if err := forceStateTransition(bobChannel, aliceChannel); err != nil {
|
|
t.Fatalf("unable to complete bob's state transition: %v", err)
|
|
}
|
|
|
|
// The latest commitment from both sides should have all the HTLCs.
|
|
numAliceOutgoing := aliceChannel.localCommitChain.tail().outgoingHTLCs
|
|
numAliceIncoming := aliceChannel.localCommitChain.tail().incomingHTLCs
|
|
if len(numAliceOutgoing) != 3 {
|
|
t.Fatalf("expected %v htlcs, instead got %v", 3, numAliceOutgoing)
|
|
}
|
|
if len(numAliceIncoming) != 1 {
|
|
t.Fatalf("expected %v htlcs, instead got %v", 1, numAliceIncoming)
|
|
}
|
|
numBobOutgoing := bobChannel.localCommitChain.tail().outgoingHTLCs
|
|
numBobIncoming := bobChannel.localCommitChain.tail().incomingHTLCs
|
|
if len(numBobOutgoing) != 1 {
|
|
t.Fatalf("expected %v htlcs, instead got %v", 1, numBobOutgoing)
|
|
}
|
|
if len(numBobIncoming) != 3 {
|
|
t.Fatalf("expected %v htlcs, instead got %v", 3, numBobIncoming)
|
|
}
|
|
|
|
// Now fetch both of the channels created above from disk to simulate a
|
|
// node restart with persistence.
|
|
alicePub := aliceChannel.channelState.IdentityPub
|
|
aliceChannels, err := aliceChannel.channelState.Db.FetchOpenChannels(alicePub)
|
|
if err != nil {
|
|
t.Fatalf("unable to fetch channel: %v", err)
|
|
}
|
|
bobPub := bobChannel.channelState.IdentityPub
|
|
bobChannels, err := bobChannel.channelState.Db.FetchOpenChannels(bobPub)
|
|
if err != nil {
|
|
t.Fatalf("unable to fetch channel: %v", err)
|
|
}
|
|
notifier := aliceChannel.channelEvents
|
|
aliceChannelNew, err := NewLightningChannel(aliceChannel.signer,
|
|
notifier, aliceChannel.feeEstimator, aliceChannels[0])
|
|
if err != nil {
|
|
t.Fatalf("unable to create new channel: %v", err)
|
|
}
|
|
bobChannelNew, err := NewLightningChannel(bobChannel.signer, notifier,
|
|
bobChannel.feeEstimator, bobChannels[0])
|
|
if err != nil {
|
|
t.Fatalf("unable to create new channel: %v", err)
|
|
}
|
|
if err := initRevocationWindows(aliceChannelNew, bobChannelNew, 3); err != nil {
|
|
t.Fatalf("unable to init revocation windows: %v", err)
|
|
}
|
|
|
|
// The state update logs of the new channels and the old channels
|
|
// should now be identical other than the height the HTLCs were added.
|
|
if aliceChannel.localUpdateLog.logIndex !=
|
|
aliceChannelNew.localUpdateLog.logIndex {
|
|
t.Fatalf("alice log counter: expected %v, got %v",
|
|
aliceChannel.localUpdateLog.logIndex,
|
|
aliceChannelNew.localUpdateLog.logIndex)
|
|
}
|
|
if aliceChannel.remoteUpdateLog.logIndex !=
|
|
aliceChannelNew.remoteUpdateLog.logIndex {
|
|
t.Fatalf("alice log counter: expected %v, got %v",
|
|
aliceChannel.remoteUpdateLog.logIndex,
|
|
aliceChannelNew.remoteUpdateLog.logIndex)
|
|
}
|
|
if aliceChannel.localUpdateLog.Len() !=
|
|
aliceChannelNew.localUpdateLog.Len() {
|
|
t.Fatalf("alice log len: expected %v, got %v",
|
|
aliceChannel.localUpdateLog.Len(),
|
|
aliceChannelNew.localUpdateLog.Len())
|
|
}
|
|
if aliceChannel.remoteUpdateLog.Len() !=
|
|
aliceChannelNew.remoteUpdateLog.Len() {
|
|
t.Fatalf("alice log len: expected %v, got %v",
|
|
aliceChannel.remoteUpdateLog.Len(),
|
|
aliceChannelNew.remoteUpdateLog.Len())
|
|
}
|
|
if bobChannel.localUpdateLog.logIndex !=
|
|
bobChannelNew.localUpdateLog.logIndex {
|
|
t.Fatalf("bob log counter: expected %v, got %v",
|
|
bobChannel.localUpdateLog.logIndex,
|
|
bobChannelNew.localUpdateLog.logIndex)
|
|
}
|
|
if bobChannel.remoteUpdateLog.logIndex !=
|
|
bobChannelNew.remoteUpdateLog.logIndex {
|
|
t.Fatalf("bob log counter: expected %v, got %v",
|
|
bobChannel.remoteUpdateLog.logIndex,
|
|
bobChannelNew.remoteUpdateLog.logIndex)
|
|
}
|
|
if bobChannel.localUpdateLog.Len() !=
|
|
bobChannelNew.localUpdateLog.Len() {
|
|
t.Fatalf("bob log len: expected %v, got %v",
|
|
bobChannel.localUpdateLog.Len(),
|
|
bobChannelNew.localUpdateLog.Len())
|
|
}
|
|
if bobChannel.remoteUpdateLog.Len() !=
|
|
bobChannelNew.remoteUpdateLog.Len() {
|
|
t.Fatalf("bob log len: expected %v, got %v",
|
|
bobChannel.remoteUpdateLog.Len(),
|
|
bobChannelNew.remoteUpdateLog.Len())
|
|
}
|
|
|
|
// Newly generated pkScripts for HTLCs should be the same as in the old channel.
|
|
for _, entry := range aliceChannel.localUpdateLog.updateIndex {
|
|
htlc := entry.Value.(*PaymentDescriptor)
|
|
restoredHtlc := aliceChannelNew.localUpdateLog.lookup(htlc.Index)
|
|
if !bytes.Equal(htlc.ourPkScript, restoredHtlc.ourPkScript) {
|
|
t.Fatalf("alice ourPkScript in ourLog: expected %X, got %X",
|
|
htlc.ourPkScript[:5], restoredHtlc.ourPkScript[:5])
|
|
}
|
|
if !bytes.Equal(htlc.theirPkScript, restoredHtlc.theirPkScript) {
|
|
t.Fatalf("alice theirPkScript in ourLog: expected %X, got %X",
|
|
htlc.theirPkScript[:5], restoredHtlc.theirPkScript[:5])
|
|
}
|
|
}
|
|
for _, entry := range aliceChannel.remoteUpdateLog.updateIndex {
|
|
htlc := entry.Value.(*PaymentDescriptor)
|
|
restoredHtlc := aliceChannelNew.remoteUpdateLog.lookup(htlc.Index)
|
|
if !bytes.Equal(htlc.ourPkScript, restoredHtlc.ourPkScript) {
|
|
t.Fatalf("alice ourPkScript in theirLog: expected %X, got %X",
|
|
htlc.ourPkScript[:5], restoredHtlc.ourPkScript[:5])
|
|
}
|
|
if !bytes.Equal(htlc.theirPkScript, restoredHtlc.theirPkScript) {
|
|
t.Fatalf("alice theirPkScript in theirLog: expected %X, got %X",
|
|
htlc.theirPkScript[:5], restoredHtlc.theirPkScript[:5])
|
|
}
|
|
}
|
|
for _, entry := range bobChannel.localUpdateLog.updateIndex {
|
|
htlc := entry.Value.(*PaymentDescriptor)
|
|
restoredHtlc := bobChannelNew.localUpdateLog.lookup(htlc.Index)
|
|
if !bytes.Equal(htlc.ourPkScript, restoredHtlc.ourPkScript) {
|
|
t.Fatalf("bob ourPkScript in ourLog: expected %X, got %X",
|
|
htlc.ourPkScript[:5], restoredHtlc.ourPkScript[:5])
|
|
}
|
|
if !bytes.Equal(htlc.theirPkScript, restoredHtlc.theirPkScript) {
|
|
t.Fatalf("bob theirPkScript in ourLog: expected %X, got %X",
|
|
htlc.theirPkScript[:5], restoredHtlc.theirPkScript[:5])
|
|
}
|
|
}
|
|
for _, entry := range bobChannel.remoteUpdateLog.updateIndex {
|
|
htlc := entry.Value.(*PaymentDescriptor)
|
|
restoredHtlc := bobChannelNew.remoteUpdateLog.lookup(htlc.Index)
|
|
if !bytes.Equal(htlc.ourPkScript, restoredHtlc.ourPkScript) {
|
|
t.Fatalf("bob ourPkScript in theirLog: expected %X, got %X",
|
|
htlc.ourPkScript[:5], restoredHtlc.ourPkScript[:5])
|
|
}
|
|
if !bytes.Equal(htlc.theirPkScript, restoredHtlc.theirPkScript) {
|
|
t.Fatalf("bob theirPkScript in theirLog: expected %X, got %X",
|
|
htlc.theirPkScript[:5], restoredHtlc.theirPkScript[:5])
|
|
}
|
|
}
|
|
|
|
// Now settle all the HTLCs, then force a state update. The state
|
|
// update should suceed as both sides have identical.
|
|
for i := 0; i < 3; i++ {
|
|
settleIndex, err := bobChannelNew.SettleHTLC(alicePreimage)
|
|
if err != nil {
|
|
t.Fatalf("unable to settle htlc: %v", err)
|
|
}
|
|
err = aliceChannelNew.ReceiveHTLCSettle(alicePreimage, settleIndex)
|
|
if err != nil {
|
|
t.Fatalf("unable to settle htlc: %v", err)
|
|
}
|
|
}
|
|
settleIndex, err := aliceChannelNew.SettleHTLC(bobPreimage)
|
|
if err != nil {
|
|
t.Fatalf("unable to settle htlc: %v", err)
|
|
}
|
|
err = bobChannelNew.ReceiveHTLCSettle(bobPreimage, settleIndex)
|
|
if err != nil {
|
|
t.Fatalf("unable to settle htlc: %v", err)
|
|
}
|
|
|
|
// Similar to the two transitions above, as both Bob and Alice added
|
|
// entries to the update log before a state transition was initiated by
|
|
// either side, both sides are required to trigger an update in order
|
|
// to lock in their changes.
|
|
if err := forceStateTransition(aliceChannelNew, bobChannelNew); err != nil {
|
|
t.Fatalf("unable to update commitments: %v", err)
|
|
}
|
|
if err := forceStateTransition(bobChannelNew, aliceChannelNew); err != nil {
|
|
t.Fatalf("unable to update commitments: %v", err)
|
|
}
|
|
|
|
// The amounts transferred should been updated as per the amounts in
|
|
// the HTLCs
|
|
if aliceChannelNew.channelState.TotalSatoshisSent != 15000 {
|
|
t.Fatalf("expected %v alice satoshis sent, got %v",
|
|
15000, aliceChannelNew.channelState.TotalSatoshisSent)
|
|
}
|
|
if aliceChannelNew.channelState.TotalSatoshisReceived != 5000 {
|
|
t.Fatalf("expected %v alice satoshis received, got %v",
|
|
5000, aliceChannelNew.channelState.TotalSatoshisReceived)
|
|
}
|
|
if bobChannelNew.channelState.TotalSatoshisSent != 5000 {
|
|
t.Fatalf("expected %v bob satoshis sent, got %v",
|
|
5000, bobChannel.channelState.TotalSatoshisSent)
|
|
}
|
|
if bobChannelNew.channelState.TotalSatoshisReceived != 15000 {
|
|
t.Fatalf("expected %v bob satoshis sent, got %v",
|
|
15000, bobChannel.channelState.TotalSatoshisSent)
|
|
}
|
|
}
|
|
|
|
func TestCancelHTLC(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Create a test channel which will be used for the duration of this
|
|
// unittest. The channel will be funded evenly with Alice having 5 BTC,
|
|
// and Bob having 5 BTC.
|
|
aliceChannel, bobChannel, cleanUp, err := createTestChannels(5)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test channels: %v", err)
|
|
}
|
|
defer cleanUp()
|
|
|
|
// Add a new HTLC from Alice to Bob, then trigger a new state
|
|
// transition in order to include it in the latest state.
|
|
const htlcAmt = btcutil.SatoshiPerBitcoin
|
|
|
|
var preImage [32]byte
|
|
copy(preImage[:], bytes.Repeat([]byte{0xaa}, 32))
|
|
htlc := &lnwire.UpdateAddHTLC{
|
|
PaymentHash: sha256.Sum256(preImage[:]),
|
|
Amount: htlcAmt,
|
|
Expiry: 10,
|
|
}
|
|
paymentHash := htlc.PaymentHash
|
|
|
|
if _, err := aliceChannel.AddHTLC(htlc); err != nil {
|
|
t.Fatalf("unable to add alice htlc: %v", err)
|
|
}
|
|
if _, err := bobChannel.ReceiveHTLC(htlc); err != nil {
|
|
t.Fatalf("unable to add bob htlc: %v", err)
|
|
}
|
|
if err := forceStateTransition(aliceChannel, bobChannel); err != nil {
|
|
t.Fatalf("unable to create new commitment state: %v", err)
|
|
}
|
|
|
|
// With the HTLC committed, Alice's balance should reflect the clearing
|
|
// of the new HTLC.
|
|
aliceExpectedBalance := btcutil.Amount(btcutil.SatoshiPerBitcoin*4) -
|
|
calcStaticFee(1)
|
|
if aliceChannel.channelState.OurBalance != aliceExpectedBalance {
|
|
t.Fatalf("Alice's balance is wrong: expected %v, got %v",
|
|
aliceExpectedBalance, aliceChannel.channelState.OurBalance)
|
|
}
|
|
|
|
// Now, with the HTLC committed on both sides, trigger a cancellation
|
|
// from Bob to Alice, removing the HTLC.
|
|
htlcCancelIndex, err := bobChannel.FailHTLC(paymentHash)
|
|
if err != nil {
|
|
t.Fatalf("unable to cancel HTLC: %v", err)
|
|
}
|
|
if err := aliceChannel.ReceiveFailHTLC(htlcCancelIndex); err != nil {
|
|
t.Fatalf("unable to recv htlc cancel: %v", err)
|
|
}
|
|
|
|
// Now trigger another state transition, the HTLC should now be removed
|
|
// from both sides, with balances reflected.
|
|
if err := forceStateTransition(bobChannel, aliceChannel); err != nil {
|
|
t.Fatalf("unable to create new commitment: %v", err)
|
|
}
|
|
|
|
// Now HTLCs should be present on the commitment transaction for
|
|
// either side.
|
|
if len(aliceChannel.localCommitChain.tip().outgoingHTLCs) != 0 ||
|
|
len(aliceChannel.remoteCommitChain.tip().outgoingHTLCs) != 0 {
|
|
t.Fatalf("htlc's still active from alice's POV")
|
|
}
|
|
if len(aliceChannel.localCommitChain.tip().incomingHTLCs) != 0 ||
|
|
len(aliceChannel.remoteCommitChain.tip().incomingHTLCs) != 0 {
|
|
t.Fatalf("htlc's still active from alice's POV")
|
|
}
|
|
if len(bobChannel.localCommitChain.tip().outgoingHTLCs) != 0 ||
|
|
len(bobChannel.remoteCommitChain.tip().outgoingHTLCs) != 0 {
|
|
t.Fatalf("htlc's still active from bob's POV")
|
|
}
|
|
if len(bobChannel.localCommitChain.tip().incomingHTLCs) != 0 ||
|
|
len(bobChannel.remoteCommitChain.tip().incomingHTLCs) != 0 {
|
|
t.Fatalf("htlc's still active from bob's POV")
|
|
}
|
|
|
|
expectedBalance := btcutil.Amount(btcutil.SatoshiPerBitcoin * 5)
|
|
if aliceChannel.channelState.OurBalance != expectedBalance-calcStaticFee(0) {
|
|
t.Fatalf("balance is wrong: expected %v, got %v",
|
|
aliceChannel.channelState.OurBalance, expectedBalance-
|
|
calcStaticFee(0))
|
|
}
|
|
if aliceChannel.channelState.TheirBalance != expectedBalance {
|
|
t.Fatalf("balance is wrong: expected %v, got %v",
|
|
aliceChannel.channelState.TheirBalance, expectedBalance)
|
|
}
|
|
if bobChannel.channelState.OurBalance != expectedBalance {
|
|
t.Fatalf("balance is wrong: expected %v, got %v",
|
|
bobChannel.channelState.OurBalance, expectedBalance)
|
|
}
|
|
if bobChannel.channelState.TheirBalance != expectedBalance-calcStaticFee(0) {
|
|
t.Fatalf("balance is wrong: expected %v, got %v",
|
|
bobChannel.channelState.TheirBalance,
|
|
expectedBalance-calcStaticFee(0))
|
|
}
|
|
}
|
|
|
|
func TestCooperativeCloseDustAdherence(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Create a test channel which will be used for the duration of this
|
|
// unittest. The channel will be funded evenly with Alice having 5 BTC,
|
|
// and Bob having 5 BTC.
|
|
aliceChannel, bobChannel, cleanUp, err := createTestChannels(5)
|
|
if err != nil {
|
|
t.Fatalf("unable to create test channels: %v", err)
|
|
}
|
|
defer cleanUp()
|
|
|
|
aliceFeeRate := uint64(aliceChannel.channelState.FeePerKw)
|
|
bobFeeRate := uint64(bobChannel.channelState.FeePerKw)
|
|
|
|
setDustLimit := func(dustVal btcutil.Amount) {
|
|
aliceChannel.channelState.OurDustLimit = dustVal
|
|
aliceChannel.channelState.TheirDustLimit = dustVal
|
|
aliceChannel.channelState.OurDustLimit = dustVal
|
|
aliceChannel.channelState.TheirDustLimit = dustVal
|
|
}
|
|
|
|
resetChannelState := func() {
|
|
aliceChannel.status = channelOpen
|
|
bobChannel.status = channelOpen
|
|
}
|
|
|
|
setBalances := func(aliceBalance, bobBalance btcutil.Amount) {
|
|
aliceChannel.channelState.OurBalance = aliceBalance
|
|
aliceChannel.channelState.TheirBalance = bobBalance
|
|
bobChannel.channelState.OurBalance = bobBalance
|
|
bobChannel.channelState.TheirBalance = aliceBalance
|
|
}
|
|
|
|
// We'll start be initializing the limit of both Alice and Bob to 10k
|
|
// satoshis.
|
|
dustLimit := btcutil.Amount(10000)
|
|
setDustLimit(dustLimit)
|
|
|
|
// Both sides currently have over 1 BTC settled as part of their
|
|
// balances. As a result, performing a cooperative closure now result
|
|
// in both sides having an output within the closure transaction.
|
|
aliceSig, _, err := aliceChannel.CreateCloseProposal(aliceFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to close channel: %v", err)
|
|
}
|
|
aliceCloseSig := append(aliceSig, byte(txscript.SigHashAll))
|
|
|
|
bobSig, _, err := bobChannel.CreateCloseProposal(bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to close channel: %v", err)
|
|
}
|
|
bobCloseSig := append(bobSig, byte(txscript.SigHashAll))
|
|
|
|
closeTx, err := bobChannel.CompleteCooperativeClose(bobCloseSig,
|
|
aliceCloseSig, bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to accept channel close: %v", err)
|
|
}
|
|
|
|
// The closure transaction should have exactly two outputs.
|
|
if len(closeTx.TxOut) != 2 {
|
|
t.Fatalf("close tx has wrong number of outputs: expected %v "+
|
|
"got %v", 2, len(closeTx.TxOut))
|
|
}
|
|
|
|
// We'll reset the channel states before proceeding to our nest test.
|
|
resetChannelState()
|
|
|
|
// Next we'll modify the current balances and dust limits such that
|
|
// Bob's current balance is above _below_ his dust limit.
|
|
aliceBal := btcutil.Amount(btcutil.SatoshiPerBitcoin)
|
|
bobBal := btcutil.Amount(250)
|
|
setBalances(aliceBal, bobBal)
|
|
|
|
// Attempt another cooperative channel closure. It should succeed
|
|
// without any issues.
|
|
aliceSig, _, err = aliceChannel.CreateCloseProposal(aliceFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to close channel: %v", err)
|
|
}
|
|
aliceCloseSig = append(aliceSig, byte(txscript.SigHashAll))
|
|
|
|
bobSig, _, err = bobChannel.CreateCloseProposal(bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to close channel: %v", err)
|
|
}
|
|
bobCloseSig = append(bobSig, byte(txscript.SigHashAll))
|
|
|
|
closeTx, err = bobChannel.CompleteCooperativeClose(bobCloseSig,
|
|
aliceCloseSig, bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to accept channel close: %v", err)
|
|
}
|
|
|
|
// The closure transaction should only have a single output, and that
|
|
// output should be Alice's balance.
|
|
if len(closeTx.TxOut) != 1 {
|
|
t.Fatalf("close tx has wrong number of outputs: expected %v "+
|
|
"got %v", 1, len(closeTx.TxOut))
|
|
}
|
|
if closeTx.TxOut[0].Value != int64(aliceBal-calcStaticFee(0)) {
|
|
t.Fatalf("alice's balance is incorrect: expected %v, got %v",
|
|
int64(aliceBal-calcStaticFee(0)), closeTx.TxOut[0].Value)
|
|
}
|
|
|
|
// Finally, we'll modify the current balances and dust limits such that
|
|
// Alice's current balance is _below_ his her limit.
|
|
setBalances(bobBal, aliceBal)
|
|
resetChannelState()
|
|
|
|
// Our final attempt at another cooperative channel closure. It should
|
|
// succeed without any issues.
|
|
aliceSig, _, err = aliceChannel.CreateCloseProposal(aliceFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to close channel: %v", err)
|
|
}
|
|
aliceCloseSig = append(aliceSig, byte(txscript.SigHashAll))
|
|
|
|
bobSig, _, err = bobChannel.CreateCloseProposal(bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to close channel: %v", err)
|
|
}
|
|
bobCloseSig = append(bobSig, byte(txscript.SigHashAll))
|
|
|
|
closeTx, err = bobChannel.CompleteCooperativeClose(bobCloseSig,
|
|
aliceCloseSig, bobFeeRate)
|
|
if err != nil {
|
|
t.Fatalf("unable to accept channel close: %v", err)
|
|
}
|
|
|
|
// The closure transaction should only have a single output, and that
|
|
// output should be Bob's balance.
|
|
if len(closeTx.TxOut) != 1 {
|
|
t.Fatalf("close tx has wrong number of outputs: expected %v "+
|
|
"got %v", 1, len(closeTx.TxOut))
|
|
}
|
|
if closeTx.TxOut[0].Value != int64(aliceBal) {
|
|
t.Fatalf("bob's balance is incorrect: expected %v, got %v",
|
|
aliceBal, closeTx.TxOut[0].Value)
|
|
}
|
|
}
|