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livetest.go
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livetest.go
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package livetest
// Regnet tests expect the BTC test harness to be running.
//
// Sim harness info:
// The harness has three wallets, alpha, beta, and gamma.
// All three wallets have confirmed UTXOs.
// The beta wallet has only coinbase outputs.
// The alpha wallet has coinbase outputs too, but has sent some to the gamma
// wallet, so also has some change outputs.
// The gamma wallet has regular transaction outputs of varying size and
// confirmation count. Value:Confirmations =
// 10:8, 18:7, 5:6, 7:5, 1:4, 15:3, 3:2, 25:1
import (
"bytes"
"context"
"crypto/sha256"
"errors"
"fmt"
"math/rand"
"os/exec"
"os/user"
"path/filepath"
"strings"
"sync/atomic"
"testing"
"time"
"decred.org/dcrdex/client/asset"
"decred.org/dcrdex/dex"
"decred.org/dcrdex/dex/config"
"decred.org/dcrdex/dex/wait"
)
var tLogger dex.Logger
type WalletConstructor func(cfg *asset.WalletConfig, logger dex.Logger, network dex.Network) (asset.Wallet, error)
func tBackend(ctx context.Context, t *testing.T, cfg *Config, walletName *WalletName, blkFunc func(string, error)) *connectedWallet {
t.Helper()
user, err := user.Current()
if err != nil {
t.Fatalf("error getting current user: %v", err)
}
fileName := walletName.Filename
if fileName == "" {
fileName = walletName.Node + ".conf"
}
cfgPath := filepath.Join(user.HomeDir, "dextest", cfg.Asset.Symbol, walletName.Node, fileName)
settings, err := config.Parse(cfgPath)
if err != nil {
t.Fatalf("error reading config options: %v", err)
}
settings["walletname"] = walletName.Name
if cfg.SplitTx {
settings["txsplit"] = "1"
}
reportName := fmt.Sprintf("%s:%s-%s", cfg.Asset.Symbol, walletName.Node, walletName.Name)
walletCfg := &asset.WalletConfig{
Settings: settings,
TipChange: func(err error) {
blkFunc(reportName, err)
},
PeersChange: func(num uint32, err error) {
fmt.Printf("peer count = %d, err = %v", num, err)
},
}
w, err := cfg.NewWallet(walletCfg, tLogger.SubLogger(walletName.Node+"."+walletName.Name), dex.Regtest)
if err != nil {
t.Fatalf("error creating backend: %v", err)
}
cm := dex.NewConnectionMaster(w)
err = cm.Connect(ctx)
if err != nil {
t.Fatalf("error connecting backend: %v", err)
}
return &connectedWallet{w, cm}
}
type connectedWallet struct {
asset.Wallet
cxn *dex.ConnectionMaster
}
type testRig struct {
t *testing.T
symbol string
firstWallet *connectedWallet
secondWallet *connectedWallet
}
func (rig *testRig) close() {
close := func(cm *dex.ConnectionMaster) {
closed := make(chan struct{})
go func() {
cm.Disconnect()
close(closed)
}()
select {
case <-closed:
case <-time.NewTimer(time.Second * 30).C:
rig.t.Fatalf("failed to disconnect")
}
}
close(rig.firstWallet.cxn)
close(rig.secondWallet.cxn)
}
func (rig *testRig) mineAlpha() error {
tmuxWindow := rig.symbol + "-harness:2"
if rig.symbol == "zec" {
tmuxWindow = rig.symbol + "-harness:4"
}
return exec.Command("tmux", "send-keys", "-t", tmuxWindow, "./mine-alpha 1", "C-m").Run()
}
func randBytes(l int) []byte {
b := make([]byte, l)
rand.Read(b)
return b
}
type WalletName struct {
Node string
Name string
// Filename is optional. If specified, it will be used instead of
// [node].conf.
Filename string
}
type Config struct {
NewWallet WalletConstructor
LotSize uint64
Asset *dex.Asset
SplitTx bool
SPV bool
FirstWallet *WalletName
SecondWallet *WalletName
Unencrypted bool
}
func Run(t *testing.T, cfg *Config) {
tLogger = dex.StdOutLogger("TEST", dex.LevelDebug)
tCtx, shutdown := context.WithCancel(context.Background())
defer shutdown()
tStart := time.Now()
walletPassword := []byte("abc")
if cfg.FirstWallet == nil {
cfg.FirstWallet = &WalletName{Node: "alpha"}
}
if cfg.SecondWallet == nil {
cfg.SecondWallet = &WalletName{
Node: "alpha",
Name: "gamma",
}
}
var blockReported uint32
blkFunc := func(name string, err error) {
atomic.StoreUint32(&blockReported, 1)
tLogger.Infof("%s has reported a new block, error = %v", name, err)
}
rig := &testRig{
t: t,
symbol: cfg.Asset.Symbol,
}
var expConfs uint32
blockWait := time.Second
if cfg.SPV {
blockWait = time.Second * 6
}
mine := func() {
if cfg.SPV { // broadcast with spv client takes a bit longer
time.Sleep(blockWait)
}
rig.mineAlpha()
expConfs++
time.Sleep(blockWait)
}
t.Log("Setting up alpha/beta/gamma wallet backends...")
rig.firstWallet = tBackend(tCtx, t, cfg, cfg.FirstWallet, blkFunc)
rig.secondWallet = tBackend(tCtx, t, cfg, cfg.SecondWallet, blkFunc)
defer rig.close()
// Unlock the wallet for use.
if !cfg.Unencrypted {
err := rig.firstWallet.Unlock(walletPassword)
if err != nil {
t.Fatalf("error unlocking gamma wallet: %v", err)
}
if cfg.SPV {
// // The test expects beta and gamma to be unlocked.
// if err := rig.beta().Unlock(walletPassword); err != nil {
// t.Fatalf("beta Unlock error: %v", err)
// }
if err := rig.secondWallet.Unlock(walletPassword); err != nil {
t.Fatalf("gamma Unlock error: %v", err)
}
}
}
var lots uint64 = 2
contractValue := lots * cfg.LotSize
tLogger.Info("Wallets configured")
inUTXOs := func(utxo asset.Coin, utxos []asset.Coin) bool {
for _, u := range utxos {
if bytes.Equal(u.ID(), utxo.ID()) {
return true
}
}
return false
}
// Check available amount.
checkAmt := func(name string, wallet *connectedWallet) {
bal, err := wallet.Balance()
if err != nil {
t.Fatalf("error getting available balance: %v", err)
}
tLogger.Infof("%s %f available, %f immature, %f locked",
name, float64(bal.Available)/1e8, float64(bal.Immature)/1e8, float64(bal.Locked)/1e8)
}
checkAmt("first", rig.firstWallet)
checkAmt("second", rig.secondWallet)
ord := &asset.Order{
Value: contractValue * 3,
MaxSwapCount: lots * 3,
DEXConfig: cfg.Asset,
}
setOrderValue := func(v uint64) {
ord.Value = v
ord.MaxSwapCount = v / cfg.LotSize
}
tLogger.Info("Testing FundOrder")
// Gamma should only have 10 BTC utxos, so calling fund for less should only
// return 1 utxo.
utxos, _, err := rig.secondWallet.FundOrder(ord)
if err != nil {
t.Fatalf("Funding error: %v", err)
}
utxo := utxos[0]
// UTXOs should be locked
utxos, _, _ = rig.secondWallet.FundOrder(ord)
if inUTXOs(utxo, utxos) {
t.Fatalf("received locked output")
}
rig.secondWallet.ReturnCoins([]asset.Coin{utxo})
rig.secondWallet.ReturnCoins(utxos)
// Make sure we get the first utxo back with Fund.
utxos, _, _ = rig.secondWallet.FundOrder(ord)
if !cfg.SplitTx && !inUTXOs(utxo, utxos) {
t.Fatalf("unlocked output not returned")
}
rig.secondWallet.ReturnCoins(utxos)
// Get a separate set of UTXOs for each contract.
setOrderValue(contractValue)
utxos1, _, err := rig.secondWallet.FundOrder(ord)
if err != nil {
t.Fatalf("error funding first contract: %v", err)
}
// Get a separate set of UTXOs for each contract.
setOrderValue(contractValue * 2)
utxos2, _, err := rig.secondWallet.FundOrder(ord)
if err != nil {
t.Fatalf("error funding second contract: %v", err)
}
// For some reason, SwapConfirmations fails with a split tx in SPV mode in
// this test. It works fine in practice, so figuring this out is a TODO.
if cfg.SplitTx && cfg.SPV {
time.Sleep(blockWait)
rig.mineAlpha()
time.Sleep(blockWait)
}
address, err := rig.firstWallet.DepositAddress()
if err != nil {
t.Fatalf("error getting alpha address: %v", err)
}
secretKey1 := randBytes(32)
keyHash1 := sha256.Sum256(secretKey1)
secretKey2 := randBytes(32)
keyHash2 := sha256.Sum256(secretKey2)
lockTime := time.Now().Add(time.Hour * 8).UTC()
// Have gamma send a swap contract to the alpha address.
contract1 := &asset.Contract{
Address: address,
Value: contractValue,
SecretHash: keyHash1[:],
LockTime: uint64(lockTime.Unix()),
}
contract2 := &asset.Contract{
Address: address,
Value: contractValue * 2,
SecretHash: keyHash2[:],
LockTime: uint64(lockTime.Unix()),
}
swaps := &asset.Swaps{
Inputs: append(utxos1, utxos2...),
Contracts: []*asset.Contract{contract1, contract2},
FeeRate: cfg.Asset.MaxFeeRate,
}
tLogger.Info("Testing Swap")
receipts, _, _, err := rig.secondWallet.Swap(swaps)
if err != nil {
t.Fatalf("error sending swap transaction: %v", err)
}
if len(receipts) != 2 {
t.Fatalf("expected 1 receipt, got %d", len(receipts))
}
tLogger.Infof("Sent %d swaps", len(receipts))
for i, r := range receipts {
tLogger.Infof(" Swap # %d: %s", i+1, r.Coin())
}
// Don't check zero confs for SPV. Core deals with the failures until the
// tx is mined.
if cfg.SPV {
mine()
}
confCoin := receipts[0].Coin()
confContract := receipts[0].Contract()
checkConfs := func(n uint32, expSpent bool) {
t.Helper()
confs, spent, err := rig.secondWallet.SwapConfirmations(context.Background(), confCoin.ID(), confContract, tStart)
if err != nil {
if n > 0 || !errors.Is(err, asset.CoinNotFoundError) {
t.Fatalf("error getting %d confs: %v", n, err)
}
}
if confs != n {
t.Fatalf("expected %d confs, got %d", n, confs)
}
if spent != expSpent {
t.Fatalf("checkConfs: expected spent = %t, got %t", expSpent, spent)
}
}
checkConfs(expConfs, false)
latencyQ := wait.NewTickerQueue(time.Millisecond * 500)
go latencyQ.Run(tCtx)
getAuditInfo := func(coinID, contract []byte) *asset.AuditInfo {
c := make(chan *asset.AuditInfo, 1)
latencyQ.Wait(&wait.Waiter{
Expiration: time.Now().Add(time.Second * 10),
TryFunc: func() wait.TryDirective {
ai, err := rig.firstWallet.AuditContract(coinID, contract, nil, false) // no TxData because server gets that for us in practice!
if err != nil {
if strings.Contains(err.Error(), "error finding unspent contract") {
return wait.TryAgain
}
c <- nil
t.Fatalf("error auditing contract: %v", err)
}
c <- ai
return wait.DontTryAgain
},
ExpireFunc: func() {
t.Fatalf("makeRedemption -> AuditContract timed out")
},
})
// Alpha should be able to redeem.
return <-c
}
makeRedemption := func(swapVal uint64, receipt asset.Receipt, secret []byte) *asset.Redemption {
t.Helper()
ai := getAuditInfo(receipt.Coin().ID(), receipt.Contract())
auditCoin := ai.Coin
if ai.Recipient != address {
t.Fatalf("wrong address. %s != %s", ai.Recipient, address)
}
if auditCoin.Value() != swapVal {
t.Fatalf("wrong contract value. wanted %d, got %d", swapVal, auditCoin.Value())
}
confs, spent, err := rig.firstWallet.SwapConfirmations(tCtx, receipt.Coin().ID(), receipt.Contract(), tStart)
if err != nil {
t.Fatalf("error getting confirmations: %v", err)
}
if confs != expConfs {
t.Fatalf("unexpected number of confirmations. wanted %d, got %d", expConfs, confs)
}
if spent {
t.Fatalf("makeRedemption: expected unspent, got spent")
}
if ai.Expiration.Equal(lockTime) {
t.Fatalf("wrong lock time. wanted %s, got %s", lockTime, ai.Expiration)
}
return &asset.Redemption{
Spends: ai,
Secret: secret,
}
}
tLogger.Info("Testing AuditContract")
redemptions := []*asset.Redemption{
makeRedemption(contractValue, receipts[0], secretKey1),
makeRedemption(contractValue*2, receipts[1], secretKey2),
}
tLogger.Info("Testing Redeem")
_, _, _, err = rig.firstWallet.Redeem(&asset.RedeemForm{
Redemptions: redemptions,
})
if err != nil {
t.Fatalf("redemption error: %v", err)
}
// Find the redemption
// Only do the mempool zero-conf redemption check when not spv.
if cfg.SPV {
mine()
}
swapReceipt := receipts[0]
ctx, cancelFind := context.WithDeadline(tCtx, time.Now().Add(time.Second*30))
defer cancelFind()
tLogger.Info("Testing FindRedemption")
found := make(chan struct{})
latencyQ.Wait(&wait.Waiter{
Expiration: time.Now().Add(time.Second * 10),
TryFunc: func() wait.TryDirective {
ctx, cancel := context.WithTimeout(tCtx, time.Second)
defer cancel()
_, _, err = rig.secondWallet.FindRedemption(ctx, swapReceipt.Coin().ID(), nil)
if err != nil {
return wait.TryAgain
}
close(found)
return wait.DontTryAgain
},
ExpireFunc: func() { t.Fatalf("mempool FindRedemption timed out") },
})
<-found
// Mine a block and find the redemption again.
mine()
if atomic.LoadUint32(&blockReported) == 0 {
t.Fatalf("no block reported")
}
// Check that there is 1 confirmation on the swap
checkConfs(expConfs, true)
_, checkKey, err := rig.secondWallet.FindRedemption(ctx, swapReceipt.Coin().ID(), nil)
if err != nil {
t.Fatalf("error finding confirmed redemption: %v", err)
}
if !bytes.Equal(checkKey, secretKey1) {
t.Fatalf("findRedemption (unconfirmed) key mismatch. %x != %x", checkKey, secretKey1)
}
// Now send another one with lockTime = now and try to refund it.
secretKey := randBytes(32)
keyHash := sha256.Sum256(secretKey)
lockTime = time.Now().Add(-8 * time.Hour)
// Have gamma send a swap contract to the alpha address.
setOrderValue(contractValue)
utxos, _, _ = rig.secondWallet.FundOrder(ord)
contract := &asset.Contract{
Address: address,
Value: contractValue,
SecretHash: keyHash[:],
LockTime: uint64(lockTime.Unix()),
}
swaps = &asset.Swaps{
Inputs: utxos,
Contracts: []*asset.Contract{contract},
FeeRate: cfg.Asset.MaxFeeRate,
}
tLogger.Info("Testing Refund")
receipts, _, _, err = rig.secondWallet.Swap(swaps)
if err != nil {
t.Fatalf("error sending swap transaction: %v", err)
}
if len(receipts) != 1 {
t.Fatalf("expected 1 receipt, got %d", len(receipts))
}
swapReceipt = receipts[0]
// SPV doesn't recognize ownership of the swap output, so we need to mine
// the transaction in order to establish spent status. In theory, we could
// just yolo and refund regardless of spent status.
if cfg.SPV {
mine()
}
coinID, err := rig.secondWallet.Refund(swapReceipt.Coin().ID(), swapReceipt.Contract(), 100)
if err != nil {
t.Fatalf("refund error: %v", err)
}
c, _ := asset.DecodeCoinID(cfg.Asset.ID, coinID)
tLogger.Infof("Refunded with %s", c)
// Test Send.
const defaultFee = 100
tLogger.Info("Testing Send")
coin, err := rig.secondWallet.Send(address, cfg.LotSize, 100)
if err != nil {
t.Fatalf("error sending: %v", err)
}
if coin.Value() != cfg.LotSize {
t.Fatalf("Expected %d got %d", cfg.LotSize, coin.Value())
}
tLogger.Infof("Sent with %s", coin.String())
// Test Withdraw.
withdrawer, _ := rig.secondWallet.Wallet.(asset.Withdrawer)
tLogger.Info("Testing Withdraw")
coin, err = withdrawer.Withdraw(address, cfg.LotSize, 100)
if err != nil {
t.Fatalf("error withdrawing: %v", err)
}
if coin.Value() >= cfg.LotSize {
t.Fatalf("Expected less than %d got %d", cfg.LotSize, coin.Value())
}
tLogger.Infof("Withdrew with %s", coin.String())
if cfg.SPV {
mine()
}
}