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test_harness.go
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test_harness.go
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package itest
import (
"bytes"
"context"
"flag"
"fmt"
"math"
"os"
"path/filepath"
"runtime"
"testing"
"time"
"github.com/btcsuite/btcd/chaincfg"
"github.com/btcsuite/btcd/chaincfg/chainhash"
"github.com/btcsuite/btcd/rpcclient"
"github.com/btcsuite/btcd/wire"
"github.com/go-errors/errors"
"github.com/lightningnetwork/lnd/lnrpc"
"github.com/lightningnetwork/lnd/lntest"
"github.com/lightningnetwork/lnd/lntest/wait"
)
var (
harnessNetParams = &chaincfg.RegressionNetParams
// lndExecutable is the full path to the lnd binary.
lndExecutable = flag.String(
"lndexec", itestLndBinary, "full path to lnd binary",
)
)
const (
testFeeBase = 1e+6
defaultCSV = lntest.DefaultCSV
defaultTimeout = lntest.DefaultTimeout
minerMempoolTimeout = lntest.MinerMempoolTimeout
channelOpenTimeout = lntest.ChannelOpenTimeout
channelCloseTimeout = lntest.ChannelCloseTimeout
itestLndBinary = "../../lnd-itest"
anchorSize = 330
noFeeLimitMsat = math.MaxInt64
AddrTypeWitnessPubkeyHash = lnrpc.AddressType_WITNESS_PUBKEY_HASH
AddrTypeNestedPubkeyHash = lnrpc.AddressType_NESTED_PUBKEY_HASH
)
// harnessTest wraps a regular testing.T providing enhanced error detection
// and propagation. All error will be augmented with a full stack-trace in
// order to aid in debugging. Additionally, any panics caused by active
// test cases will also be handled and represented as fatals.
type harnessTest struct {
t *testing.T
// testCase is populated during test execution and represents the
// current test case.
testCase *testCase
// lndHarness is a reference to the current network harness. Will be
// nil if not yet set up.
lndHarness *lntest.NetworkHarness
}
// newHarnessTest creates a new instance of a harnessTest from a regular
// testing.T instance.
func newHarnessTest(t *testing.T, net *lntest.NetworkHarness) *harnessTest {
return &harnessTest{t, nil, net}
}
// Skipf calls the underlying testing.T's Skip method, causing the current test
// to be skipped.
func (h *harnessTest) Skipf(format string, args ...interface{}) {
h.t.Skipf(format, args...)
}
// Fatalf causes the current active test case to fail with a fatal error. All
// integration tests should mark test failures solely with this method due to
// the error stack traces it produces.
func (h *harnessTest) Fatalf(format string, a ...interface{}) {
if h.lndHarness != nil {
h.lndHarness.SaveProfilesPages()
}
stacktrace := errors.Wrap(fmt.Sprintf(format, a...), 1).ErrorStack()
if h.testCase != nil {
h.t.Fatalf("Failed: (%v): exited with error: \n"+
"%v", h.testCase.name, stacktrace)
} else {
h.t.Fatalf("Error outside of test: %v", stacktrace)
}
}
// RunTestCase executes a harness test case. Any errors or panics will be
// represented as fatal.
func (h *harnessTest) RunTestCase(testCase *testCase) {
h.testCase = testCase
defer func() {
h.testCase = nil
}()
defer func() {
if err := recover(); err != nil {
description := errors.Wrap(err, 2).ErrorStack()
h.t.Fatalf("Failed: (%v) panicked with: \n%v",
h.testCase.name, description)
}
}()
testCase.test(h.lndHarness, h)
}
func (h *harnessTest) Logf(format string, args ...interface{}) {
h.t.Logf(format, args...)
}
func (h *harnessTest) Log(args ...interface{}) {
h.t.Log(args...)
}
func (h *harnessTest) getLndBinary() string {
binary := itestLndBinary
lndExec := ""
if lndExecutable != nil && *lndExecutable != "" {
lndExec = *lndExecutable
}
if lndExec == "" && runtime.GOOS == "windows" {
// Windows (even in a bash like environment like git bash as on
// Travis) doesn't seem to like relative paths to exe files...
currentDir, err := os.Getwd()
if err != nil {
h.Fatalf("unable to get working directory: %v", err)
}
targetPath := filepath.Join(currentDir, "../../lnd-itest.exe")
binary, err = filepath.Abs(targetPath)
if err != nil {
h.Fatalf("unable to get absolute path: %v", err)
}
} else if lndExec != "" {
binary = lndExec
}
return binary
}
type testCase struct {
name string
test func(net *lntest.NetworkHarness, t *harnessTest)
}
// waitForTxInMempool polls until finding one transaction in the provided
// miner's mempool. An error is returned if *one* transaction isn't found within
// the given timeout.
func waitForTxInMempool(miner *rpcclient.Client,
timeout time.Duration) (*chainhash.Hash, error) {
txs, err := waitForNTxsInMempool(miner, 1, timeout)
if err != nil {
return nil, err
}
return txs[0], err
}
// waitForNTxsInMempool polls until finding the desired number of transactions
// in the provided miner's mempool. An error is returned if this number is not
// met after the given timeout.
func waitForNTxsInMempool(miner *rpcclient.Client, n int,
timeout time.Duration) ([]*chainhash.Hash, error) {
breakTimeout := time.After(timeout)
ticker := time.NewTicker(50 * time.Millisecond)
defer ticker.Stop()
var err error
var mempool []*chainhash.Hash
for {
select {
case <-breakTimeout:
return nil, fmt.Errorf("wanted %v, found %v txs "+
"in mempool: %v", n, len(mempool), mempool)
case <-ticker.C:
mempool, err = miner.GetRawMempool()
if err != nil {
return nil, err
}
if len(mempool) == n {
return mempool, nil
}
}
}
}
// mineBlocks mine 'num' of blocks and check that blocks are present in
// node blockchain. numTxs should be set to the number of transactions
// (excluding the coinbase) we expect to be included in the first mined block.
func mineBlocks(t *harnessTest, net *lntest.NetworkHarness,
num uint32, numTxs int) []*wire.MsgBlock {
// If we expect transactions to be included in the blocks we'll mine,
// we wait here until they are seen in the miner's mempool.
var txids []*chainhash.Hash
var err error
if numTxs > 0 {
txids, err = waitForNTxsInMempool(
net.Miner.Client, numTxs, minerMempoolTimeout,
)
if err != nil {
t.Fatalf("unable to find txns in mempool: %v", err)
}
}
blocks := make([]*wire.MsgBlock, num)
blockHashes, err := net.Miner.Client.Generate(num)
if err != nil {
t.Fatalf("unable to generate blocks: %v", err)
}
for i, blockHash := range blockHashes {
block, err := net.Miner.Client.GetBlock(blockHash)
if err != nil {
t.Fatalf("unable to get block: %v", err)
}
blocks[i] = block
}
// Finally, assert that all the transactions were included in the first
// block.
for _, txid := range txids {
assertTxInBlock(t, blocks[0], txid)
}
return blocks
}
func assertTxInBlock(t *harnessTest, block *wire.MsgBlock, txid *chainhash.Hash) {
for _, tx := range block.Transactions {
sha := tx.TxHash()
if bytes.Equal(txid[:], sha[:]) {
return
}
}
t.Fatalf("tx was not included in block")
}
func assertWalletUnspent(t *harnessTest, node *lntest.HarnessNode, out *lnrpc.OutPoint) {
t.t.Helper()
err := wait.NoError(func() error {
ctxt, cancel := context.WithTimeout(context.Background(), defaultTimeout)
defer cancel()
unspent, err := node.ListUnspent(ctxt, &lnrpc.ListUnspentRequest{})
if err != nil {
return err
}
err = errors.New("tx with wanted txhash never found")
for _, utxo := range unspent.Utxos {
if !bytes.Equal(utxo.Outpoint.TxidBytes, out.TxidBytes) {
continue
}
err = errors.New("wanted output is not a wallet utxo")
if utxo.Outpoint.OutputIndex != out.OutputIndex {
continue
}
return nil
}
return err
}, defaultTimeout)
if err != nil {
t.Fatalf("outpoint %s not unspent by %s's wallet: %v", out,
node.Name(), err)
}
}