lnd/mock.go

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package main
import (
"github.com/lightningnetwork/lnd/chainntnfs"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/roasbeef/btcd/btcec"
"github.com/roasbeef/btcd/chaincfg"
"github.com/roasbeef/btcd/chaincfg/chainhash"
"github.com/roasbeef/btcd/txscript"
"github.com/roasbeef/btcd/wire"
"github.com/roasbeef/btcutil"
)
// The block height returned by the mock BlockChainIO's GetBestBlock.
const fundingBroadcastHeight = 123
type mockSigner struct {
key *btcec.PrivateKey
}
func (m *mockSigner) SignOutputRaw(tx *wire.MsgTx,
signDesc *lnwallet.SignDescriptor) ([]byte, error) {
amt := signDesc.Output.Value
witnessScript := signDesc.WitnessScript
privKey := m.key
sig, err := txscript.RawTxInWitnessSignature(tx, signDesc.SigHashes,
signDesc.InputIndex, amt, witnessScript, signDesc.HashType,
privKey)
if err != nil {
return nil, err
}
return sig[:len(sig)-1], nil
}
func (m *mockSigner) ComputeInputScript(tx *wire.MsgTx,
signDesc *lnwallet.SignDescriptor) (*lnwallet.InputScript, error) {
witnessScript, err := txscript.WitnessSignature(tx, signDesc.SigHashes,
signDesc.InputIndex, signDesc.Output.Value,
signDesc.Output.PkScript, signDesc.HashType, m.key, true)
if err != nil {
return nil, err
}
return &lnwallet.InputScript{
Witness: witnessScript,
}, nil
}
type mockNotfier struct {
confChannel chan *chainntnfs.TxConfirmation
}
func (m *mockNotfier) RegisterConfirmationsNtfn(txid *chainhash.Hash, numConfs,
heightHint uint32) (*chainntnfs.ConfirmationEvent, error) {
return &chainntnfs.ConfirmationEvent{
Confirmed: m.confChannel,
}, nil
}
func (m *mockNotfier) RegisterBlockEpochNtfn() (*chainntnfs.BlockEpochEvent,
error) {
return nil, nil
}
func (m *mockNotfier) Start() error {
return nil
}
func (m *mockNotfier) Stop() error {
return nil
}
func (m *mockNotfier) RegisterSpendNtfn(outpoint *wire.OutPoint,
heightHint uint32) (*chainntnfs.SpendEvent, error) {
return &chainntnfs.SpendEvent{
Spend: make(chan *chainntnfs.SpendDetail),
Cancel: func() {},
}, nil
}
type mockChainIO struct{}
func (*mockChainIO) GetBestBlock() (*chainhash.Hash, int32, error) {
return activeNetParams.GenesisHash, fundingBroadcastHeight, nil
}
func (*mockChainIO) GetUtxo(op *wire.OutPoint,
heightHint uint32) (*wire.TxOut, error) {
return nil, nil
}
func (*mockChainIO) GetBlockHash(blockHeight int64) (*chainhash.Hash, error) {
return nil, nil
}
func (*mockChainIO) GetBlock(blockHash *chainhash.Hash) (*wire.MsgBlock, error) {
return nil, nil
}
// mockWalletController is used by the LightningWallet, and let us mock the
// interaction with the bitcoin network.
type mockWalletController struct {
rootKey *btcec.PrivateKey
prevAddres btcutil.Address
publishedTransactions chan *wire.MsgTx
}
// FetchInputInfo will be called to get info about the inputs to the funding
// transaction.
func (*mockWalletController) FetchInputInfo(
prevOut *wire.OutPoint) (*wire.TxOut, error) {
txOut := &wire.TxOut{
Value: int64(10 * btcutil.SatoshiPerBitcoin),
PkScript: []byte("dummy"),
}
return txOut, nil
}
func (*mockWalletController) ConfirmedBalance(confs int32,
witness bool) (btcutil.Amount, error) {
return 0, nil
}
// NewAddress is called to get new addresses for delivery, change etc.
func (m *mockWalletController) NewAddress(addrType lnwallet.AddressType,
change bool) (btcutil.Address, error) {
addr, _ := btcutil.NewAddressPubKey(
m.rootKey.PubKey().SerializeCompressed(), &chaincfg.MainNetParams)
return addr, nil
}
func (*mockWalletController) GetPrivKey(a btcutil.Address) (*btcec.PrivateKey, error) {
return nil, nil
}
// NewRawKey will be called to get keys to be used for the funding tx and the
// commitment tx.
func (m *mockWalletController) NewRawKey() (*btcec.PublicKey, error) {
return m.rootKey.PubKey(), nil
}
// FetchRootKey will be called to provide the wallet with a root key.
func (m *mockWalletController) FetchRootKey() (*btcec.PrivateKey, error) {
return m.rootKey, nil
}
func (*mockWalletController) SendOutputs(outputs []*wire.TxOut) (*chainhash.Hash, error) {
return nil, nil
}
// ListUnspentWitness is called by the wallet when doing coin selection. We just
// need one unspent for the funding transaction.
func (*mockWalletController) ListUnspentWitness(confirms int32) ([]*lnwallet.Utxo, error) {
utxo := &lnwallet.Utxo{
AddressType: lnwallet.WitnessPubKey,
Value: btcutil.Amount(10 * btcutil.SatoshiPerBitcoin),
PkScript: make([]byte, 22),
OutPoint: wire.OutPoint{
Hash: chainhash.Hash{},
Index: 0,
},
}
var ret []*lnwallet.Utxo
ret = append(ret, utxo)
return ret, nil
}
func (*mockWalletController) ListTransactionDetails() ([]*lnwallet.TransactionDetail, error) {
return nil, nil
}
func (*mockWalletController) LockOutpoint(o wire.OutPoint) {}
func (*mockWalletController) UnlockOutpoint(o wire.OutPoint) {}
func (m *mockWalletController) PublishTransaction(tx *wire.MsgTx) error {
m.publishedTransactions <- tx
return nil
}
func (*mockWalletController) SubscribeTransactions() (lnwallet.TransactionSubscription, error) {
return nil, nil
}
func (*mockWalletController) IsSynced() (bool, error) {
return true, nil
}
func (*mockWalletController) Start() error {
return nil
}
func (*mockWalletController) Stop() error {
return nil
}