gecko/vms/secp256k1fx/fx_test.go

961 lines
19 KiB
Go

// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package secp256k1fx
import (
"testing"
"time"
"github.com/ava-labs/gecko/ids"
"github.com/ava-labs/gecko/utils/crypto"
"github.com/ava-labs/gecko/utils/hashing"
"github.com/ava-labs/gecko/utils/logging"
"github.com/ava-labs/gecko/utils/timer"
"github.com/ava-labs/gecko/utils/codec"
)
var (
txBytes = []byte{0, 1, 2, 3, 4, 5}
sigBytes = [crypto.SECP256K1RSigLen]byte{
0x0e, 0x33, 0x4e, 0xbc, 0x67, 0xa7, 0x3f, 0xe8,
0x24, 0x33, 0xac, 0xa3, 0x47, 0x88, 0xa6, 0x3d,
0x58, 0xe5, 0x8e, 0xf0, 0x3a, 0xd5, 0x84, 0xf1,
0xbc, 0xa3, 0xb2, 0xd2, 0x5d, 0x51, 0xd6, 0x9b,
0x0f, 0x28, 0x5d, 0xcd, 0x3f, 0x71, 0x17, 0x0a,
0xf9, 0xbf, 0x2d, 0xb1, 0x10, 0x26, 0x5c, 0xe9,
0xdc, 0xc3, 0x9d, 0x7a, 0x01, 0x50, 0x9d, 0xe8,
0x35, 0xbd, 0xcb, 0x29, 0x3a, 0xd1, 0x49, 0x32,
0x00,
}
addrBytes = [hashing.AddrLen]byte{
0x01, 0x5c, 0xce, 0x6c, 0x55, 0xd6, 0xb5, 0x09,
0x84, 0x5c, 0x8c, 0x4e, 0x30, 0xbe, 0xd9, 0x8d,
0x39, 0x1a, 0xe7, 0xf0,
}
)
type testVM struct{ clock timer.Clock }
func (vm *testVM) Codec() codec.Codec { return codec.NewDefault() }
func (vm *testVM) Clock() *timer.Clock { return &vm.clock }
func (vm *testVM) Logger() logging.Logger { return logging.NoLog{} }
type testCodec struct{}
func (c *testCodec) RegisterStruct(interface{}) {}
type testTx struct{ bytes []byte }
func (tx *testTx) UnsignedBytes() []byte { return tx.bytes }
func TestFxInitialize(t *testing.T) {
vm := testVM{}
fx := Fx{}
err := fx.Initialize(&vm)
if err != nil {
t.Fatal(err)
}
}
func TestFxInitializeInvalid(t *testing.T) {
fx := Fx{}
err := fx.Initialize(nil)
if err == nil {
t.Fatalf("Should have returned an error")
}
}
func TestFxVerifyTransfer(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
if err := fx.Bootstrapping(); err != nil {
t.Fatal(err)
}
if err := fx.Bootstrapped(); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err != nil {
t.Fatal(err)
}
}
func TestFxVerifyTransferNilTx(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(nil, in, cred, out); err == nil {
t.Fatalf("Should have failed verification due to a nil tx")
}
}
func TestFxVerifyTransferNilOutput(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(tx, in, cred, nil); err == nil {
t.Fatalf("Should have failed verification due to a nil output")
}
}
func TestFxVerifyTransferNilInput(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(tx, nil, cred, out); err == nil {
t.Fatalf("Should have failed verification due to a nil input")
}
}
func TestFxVerifyTransferNilCredential(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
if err := fx.VerifyTransfer(tx, in, nil, out); err == nil {
t.Fatalf("Should have failed verification due to a nil credential")
}
}
func TestFxVerifyTransferInvalidOutput(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 0,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to an invalid output")
}
}
func TestFxVerifyTransferWrongAmounts(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 2,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to different amounts")
}
}
func TestFxVerifyTransferTimelocked(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: uint64(date.Add(time.Second).Unix()),
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to a timelocked output")
}
}
func TestFxVerifyTransferTooManySigners(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0, 1},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
[crypto.SECP256K1RSigLen]byte{},
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to too many signers")
}
}
func TestFxVerifyTransferTooFewSigners(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to too few signers")
}
}
func TestFxVerifyTransferMismatchedSigners(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
[crypto.SECP256K1RSigLen]byte{},
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to too mismatched signers")
}
}
func TestFxVerifyTransferInvalidSignature(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
if err := fx.Bootstrapping(); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
[crypto.SECP256K1RSigLen]byte{},
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err != nil {
t.Fatal(err)
}
if err := fx.Bootstrapped(); err != nil {
t.Fatal(err)
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to an invalid signature")
}
}
func TestFxVerifyTransferWrongSigner(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
if err := fx.Bootstrapping(); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
out := &TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.ShortEmpty,
},
},
}
in := &TransferInput{
Amt: 1,
Input: Input{
SigIndices: []uint32{0},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
if err := fx.VerifyTransfer(tx, in, cred, out); err != nil {
t.Fatal(err)
}
if err := fx.Bootstrapped(); err != nil {
t.Fatal(err)
}
if err := fx.VerifyTransfer(tx, in, cred, out); err == nil {
t.Fatalf("Should have errored due to a wrong signer")
}
}
func TestFxVerifyOperation(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
utxo := &MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
op := &MintOperation{
MintInput: Input{
SigIndices: []uint32{0},
},
MintOutput: MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
TransferOutput: TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
utxos := []interface{}{utxo}
err := fx.VerifyOperation(tx, op, cred, utxos)
if err != nil {
t.Fatal(err)
}
}
func TestFxVerifyOperationUnknownTx(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
utxo := &MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
op := &MintOperation{
MintInput: Input{
SigIndices: []uint32{0},
},
MintOutput: MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
TransferOutput: TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
utxos := []interface{}{utxo}
err := fx.VerifyOperation(nil, op, cred, utxos)
if err == nil {
t.Fatalf("Should have errored due to an invalid tx type")
}
}
func TestFxVerifyOperationUnknownOperation(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
utxo := &MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
utxos := []interface{}{utxo}
err := fx.VerifyOperation(tx, nil, cred, utxos)
if err == nil {
t.Fatalf("Should have errored due to an invalid operation type")
}
}
func TestFxVerifyOperationUnknownCredential(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
utxo := &MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
op := &MintOperation{
MintInput: Input{
SigIndices: []uint32{0},
},
MintOutput: MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
TransferOutput: TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
}
utxos := []interface{}{utxo}
err := fx.VerifyOperation(tx, op, nil, utxos)
if err == nil {
t.Fatalf("Should have errored due to an invalid credential type")
}
}
func TestFxVerifyOperationWrongNumberOfUTXOs(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
utxo := &MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
op := &MintOperation{
MintInput: Input{
SigIndices: []uint32{0},
},
MintOutput: MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
TransferOutput: TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
utxos := []interface{}{utxo, utxo}
err := fx.VerifyOperation(tx, op, cred, utxos)
if err == nil {
t.Fatalf("Should have errored due to a wrong number of utxos")
}
}
func TestFxVerifyOperationUnknownUTXOType(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
op := &MintOperation{
MintInput: Input{
SigIndices: []uint32{0},
},
MintOutput: MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
TransferOutput: TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
utxos := []interface{}{nil}
err := fx.VerifyOperation(tx, op, cred, utxos)
if err == nil {
t.Fatalf("Should have errored due to an invalid utxo type")
}
}
func TestFxVerifyOperationInvalidOperationVerify(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
utxo := &MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
op := &MintOperation{
MintInput: Input{
SigIndices: []uint32{0},
},
MintOutput: MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
TransferOutput: TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
utxos := []interface{}{utxo}
err := fx.VerifyOperation(tx, op, cred, utxos)
if err == nil {
t.Fatalf("Should have errored due to a failed verify")
}
}
func TestFxVerifyOperationMismatchedMintOutputs(t *testing.T) {
vm := testVM{}
date := time.Date(2019, time.January, 19, 16, 25, 17, 3, time.UTC)
vm.clock.Set(date)
fx := Fx{}
if err := fx.Initialize(&vm); err != nil {
t.Fatal(err)
}
tx := &testTx{
bytes: txBytes,
}
utxo := &MintOutput{
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
}
op := &MintOperation{
MintInput: Input{
SigIndices: []uint32{0},
},
MintOutput: MintOutput{
OutputOwners: OutputOwners{},
},
TransferOutput: TransferOutput{
Amt: 1,
Locktime: 0,
OutputOwners: OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{
ids.NewShortID(addrBytes),
},
},
},
}
cred := &Credential{
Sigs: [][crypto.SECP256K1RSigLen]byte{
sigBytes,
},
}
utxos := []interface{}{utxo}
err := fx.VerifyOperation(tx, op, cred, utxos)
if err == nil {
t.Fatalf("Should have errored due to the wrong MintOutput being created")
}
}