lnd.xprv/channeldb/payments_test.go

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package channeldb
import (
"bytes"
"fmt"
"math/rand"
"reflect"
"testing"
"time"
"github.com/btcsuite/btcd/btcec"
"github.com/davecgh/go-spew/spew"
"github.com/lightningnetwork/lnd/lntypes"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/routing/route"
"github.com/lightningnetwork/lnd/tlv"
)
var (
priv, _ = btcec.NewPrivateKey(btcec.S256())
pub = priv.PubKey()
tlvBytes = []byte{1, 2, 3}
tlvEncoder = tlv.StubEncoder(tlvBytes)
testHop1 = &route.Hop{
PubKeyBytes: route.NewVertex(pub),
ChannelID: 12345,
OutgoingTimeLock: 111,
AmtToForward: 555,
TLVRecords: []tlv.Record{
tlv.MakeStaticRecord(1, nil, 3, tlvEncoder, nil),
tlv.MakeStaticRecord(2, nil, 3, tlvEncoder, nil),
},
}
testHop2 = &route.Hop{
PubKeyBytes: route.NewVertex(pub),
ChannelID: 12345,
OutgoingTimeLock: 111,
AmtToForward: 555,
LegacyPayload: true,
}
testRoute = route.Route{
TotalTimeLock: 123,
TotalAmount: 1234567,
SourcePubKey: route.NewVertex(pub),
Hops: []*route.Hop{
testHop1,
testHop2,
},
}
)
func makeFakePayment() *outgoingPayment {
fakeInvoice := &Invoice{
// Use single second precision to avoid false positive test
// failures due to the monotonic time component.
CreationDate: time.Unix(time.Now().Unix(), 0),
Memo: []byte("fake memo"),
Receipt: []byte("fake receipt"),
PaymentRequest: []byte(""),
}
copy(fakeInvoice.Terms.PaymentPreimage[:], rev[:])
fakeInvoice.Terms.Value = lnwire.NewMSatFromSatoshis(10000)
fakePath := make([][33]byte, 3)
for i := 0; i < 3; i++ {
copy(fakePath[i][:], bytes.Repeat([]byte{byte(i)}, 33))
}
fakePayment := &outgoingPayment{
Invoice: *fakeInvoice,
Fee: 101,
Path: fakePath,
TimeLockLength: 1000,
}
copy(fakePayment.PaymentPreimage[:], rev[:])
return fakePayment
}
func makeFakeInfo() (*PaymentCreationInfo, *PaymentAttemptInfo) {
var preimg lntypes.Preimage
copy(preimg[:], rev[:])
c := &PaymentCreationInfo{
PaymentHash: preimg.Hash(),
Value: 1000,
// Use single second precision to avoid false positive test
// failures due to the monotonic time component.
CreationDate: time.Unix(time.Now().Unix(), 0),
PaymentRequest: []byte(""),
}
a := &PaymentAttemptInfo{
PaymentID: 44,
SessionKey: priv,
Route: testRoute,
}
return c, a
}
func makeFakePaymentHash() [32]byte {
var paymentHash [32]byte
rBytes, _ := randomBytes(0, 32)
copy(paymentHash[:], rBytes)
return paymentHash
}
// randomBytes creates random []byte with length in range [minLen, maxLen)
func randomBytes(minLen, maxLen int) ([]byte, error) {
randBuf := make([]byte, minLen+rand.Intn(maxLen-minLen))
if _, err := rand.Read(randBuf); err != nil {
return nil, fmt.Errorf("Internal error. "+
"Cannot generate random string: %v", err)
}
return randBuf, nil
}
func makeRandomFakePayment() (*outgoingPayment, error) {
var err error
fakeInvoice := &Invoice{
// Use single second precision to avoid false positive test
// failures due to the monotonic time component.
CreationDate: time.Unix(time.Now().Unix(), 0),
}
fakeInvoice.Memo, err = randomBytes(1, 50)
if err != nil {
return nil, err
}
fakeInvoice.Receipt, err = randomBytes(1, 50)
if err != nil {
return nil, err
}
fakeInvoice.PaymentRequest, err = randomBytes(1, 50)
if err != nil {
return nil, err
}
preImg, err := randomBytes(32, 33)
if err != nil {
return nil, err
}
copy(fakeInvoice.Terms.PaymentPreimage[:], preImg)
fakeInvoice.Terms.Value = lnwire.MilliSatoshi(rand.Intn(10000))
fakePathLen := 1 + rand.Intn(5)
fakePath := make([][33]byte, fakePathLen)
for i := 0; i < fakePathLen; i++ {
b, err := randomBytes(33, 34)
if err != nil {
return nil, err
}
copy(fakePath[i][:], b)
}
fakePayment := &outgoingPayment{
Invoice: *fakeInvoice,
Fee: lnwire.MilliSatoshi(rand.Intn(1001)),
Path: fakePath,
TimeLockLength: uint32(rand.Intn(10000)),
}
copy(fakePayment.PaymentPreimage[:], fakeInvoice.Terms.PaymentPreimage[:])
return fakePayment, nil
}
func TestSentPaymentSerialization(t *testing.T) {
t.Parallel()
c, s := makeFakeInfo()
var b bytes.Buffer
if err := serializePaymentCreationInfo(&b, c); err != nil {
t.Fatalf("unable to serialize creation info: %v", err)
}
newCreationInfo, err := deserializePaymentCreationInfo(&b)
if err != nil {
t.Fatalf("unable to deserialize creation info: %v", err)
}
if !reflect.DeepEqual(c, newCreationInfo) {
t.Fatalf("Payments do not match after "+
"serialization/deserialization %v vs %v",
spew.Sdump(c), spew.Sdump(newCreationInfo),
)
}
b.Reset()
if err := serializePaymentAttemptInfo(&b, s); err != nil {
t.Fatalf("unable to serialize info: %v", err)
}
newAttemptInfo, err := deserializePaymentAttemptInfo(&b)
if err != nil {
t.Fatalf("unable to deserialize info: %v", err)
}
// First we verify all the records match up porperly, as they aren't
// able to be properly compared using reflect.DeepEqual.
assertRouteHopRecordsEqual(&s.Route, &newAttemptInfo.Route)
// With the hop recrods, equal, we'll now blank them out as
// reflect.DeepEqual can't properly compare tlv.Record instances.
newAttemptInfo.Route.Hops[0].TLVRecords = nil
newAttemptInfo.Route.Hops[1].TLVRecords = nil
s.Route.Hops[0].TLVRecords = nil
s.Route.Hops[1].TLVRecords = nil
if !reflect.DeepEqual(s, newAttemptInfo) {
s.SessionKey.Curve = nil
newAttemptInfo.SessionKey.Curve = nil
t.Fatalf("Payments do not match after "+
"serialization/deserialization %v vs %v",
spew.Sdump(s), spew.Sdump(newAttemptInfo),
)
}
}
func assertRouteHopRecordsEqual(r1, r2 *route.Route) error {
for i := 0; i < len(r1.Hops); i++ {
for j := 0; j < len(r1.Hops[i].TLVRecords); j++ {
expectedRecord := r1.Hops[i].TLVRecords[j]
newRecord := r2.Hops[i].TLVRecords[j]
err := assertHopRecordsEqual(expectedRecord, newRecord)
if err != nil {
return fmt.Errorf("route record mismatch: %v", err)
}
}
}
return nil
}
func assertHopRecordsEqual(h1, h2 tlv.Record) error {
if h1.Type() != h2.Type() {
return fmt.Errorf("wrong type: expected %v, got %v", h1.Type(),
h2.Type())
}
var b bytes.Buffer
if err := h2.Encode(&b); err != nil {
return fmt.Errorf("unable to encode record: %v", err)
}
if !bytes.Equal(b.Bytes(), tlvBytes) {
return fmt.Errorf("wrong raw record: expected %x, got %x",
tlvBytes, b.Bytes())
}
if h1.Size() != h2.Size() {
return fmt.Errorf("wrong size: expected %v, "+
"got %v", h1.Size(), h2.Size())
}
return nil
}
func TestRouteSerialization(t *testing.T) {
t.Parallel()
var b bytes.Buffer
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if err := SerializeRoute(&b, testRoute); err != nil {
t.Fatal(err)
}
r := bytes.NewReader(b.Bytes())
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route2, err := DeserializeRoute(r)
if err != nil {
t.Fatal(err)
}
// First we verify all the records match up porperly, as they aren't
// able to be properly compared using reflect.DeepEqual.
err = assertRouteHopRecordsEqual(&testRoute, &route2)
if err != nil {
t.Fatalf("route tlv records don't match: %v", err)
}
// Now that we know the records match up, we'll examine the remainder
// of the route without the TLV records attached as reflect.DeepEqual
// can't properly assert their equality.
testRoute.Hops[0].TLVRecords = nil
testRoute.Hops[1].TLVRecords = nil
route2.Hops[0].TLVRecords = nil
route2.Hops[1].TLVRecords = nil
if !reflect.DeepEqual(testRoute, route2) {
t.Fatalf("routes not equal: \n%v vs \n%v",
spew.Sdump(testRoute), spew.Sdump(route2))
}
}