lnd/channeldb/payments_test.go

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package channeldb
import (
"bytes"
"crypto/sha256"
"fmt"
"math/rand"
"reflect"
"testing"
"time"
"github.com/davecgh/go-spew/spew"
"github.com/lightningnetwork/lnd/lnwire"
)
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"),
}
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))
}
return &OutgoingPayment{
Invoice: *fakeInvoice,
Fee: 101,
Path: fakePath,
TimeLockLength: 1000,
PaymentHash: sha256.Sum256(rev[:]),
}
}
// 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
}
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)
}
rHash := sha256.Sum256(fakeInvoice.Terms.PaymentPreimage[:])
fakePayment := &OutgoingPayment{
Invoice: *fakeInvoice,
Fee: lnwire.MilliSatoshi(rand.Intn(1001)),
Path: fakePath,
TimeLockLength: uint32(rand.Intn(10000)),
PaymentHash: rHash,
}
return fakePayment, nil
}
func TestOutgoingPaymentSerialization(t *testing.T) {
t.Parallel()
fakePayment := makeFakePayment()
var b bytes.Buffer
if err := serializeOutgoingPayment(&b, fakePayment); err != nil {
t.Fatalf("unable to serialize outgoing payment: %v", err)
}
newPayment, err := deserializeOutgoingPayment(&b)
if err != nil {
t.Fatalf("unable to deserialize outgoing payment: %v", err)
}
if !reflect.DeepEqual(fakePayment, newPayment) {
t.Fatalf("Payments do not match after "+
"serialization/deserialization %v vs %v",
spew.Sdump(fakePayment),
spew.Sdump(newPayment),
)
}
}
func TestOutgoingPaymentWorkflow(t *testing.T) {
t.Parallel()
db, cleanUp, err := makeTestDB()
defer cleanUp()
if err != nil {
t.Fatalf("unable to make test db: %v", err)
}
fakePayment := makeFakePayment()
if err = db.AddPayment(fakePayment); err != nil {
t.Fatalf("unable to put payment in DB: %v", err)
}
payments, err := db.FetchAllPayments()
if err != nil {
t.Fatalf("unable to fetch payments from DB: %v", err)
}
expectedPayments := []*OutgoingPayment{fakePayment}
if !reflect.DeepEqual(payments, expectedPayments) {
t.Fatalf("Wrong payments after reading from DB."+
"Got %v, want %v",
spew.Sdump(payments),
spew.Sdump(expectedPayments),
)
}
// Make some random payments
for i := 0; i < 5; i++ {
randomPayment, err := makeRandomFakePayment()
if err != nil {
t.Fatalf("Internal error in tests: %v", err)
}
if err = db.AddPayment(randomPayment); err != nil {
t.Fatalf("unable to put payment in DB: %v", err)
}
expectedPayments = append(expectedPayments, randomPayment)
}
payments, err = db.FetchAllPayments()
if err != nil {
t.Fatalf("Can't get payments from DB: %v", err)
}
if !reflect.DeepEqual(payments, expectedPayments) {
t.Fatalf("Wrong payments after reading from DB."+
"Got %v, want %v",
spew.Sdump(payments),
spew.Sdump(expectedPayments),
)
}
// Delete all payments.
if err = db.DeleteAllPayments(); err != nil {
t.Fatalf("unable to delete payments from DB: %v", err)
}
// Check that there is no payments after deletion
paymentsAfterDeletion, err := db.FetchAllPayments()
if err != nil {
t.Fatalf("Can't get payments after deletion: %v", err)
}
if len(paymentsAfterDeletion) != 0 {
t.Fatalf("After deletion DB has %v payments, want %v",
len(paymentsAfterDeletion), 0)
}
}