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// Copyright (C) 2019-2021 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package transactions
import (
"path/filepath"
"testing"
"github.com/stretchr/testify/require"
"github.com/algorand/go-algorand/crypto"
"github.com/algorand/go-algorand/crypto/merklearray"
"github.com/algorand/go-algorand/protocol"
"github.com/algorand/go-algorand/test/framework/fixtures"
"github.com/algorand/go-algorand/test/partitiontest"
)
func TestTxnMerkleProof(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
a := require.New(fixtures.SynchronizedTest(t))
var fixture fixtures.RestClientFixture
fixture.Setup(t, filepath.Join("nettemplates", "OneNodeFuture.json"))
defer fixture.Shutdown()
client := fixture.LibGoalClient
// We will create three new accounts, transfer some amount of money into
// the first account, and then transfer a smaller amount to the second
// account while closing out the rest into the third.
accountList, err := fixture.GetWalletsSortedByBalance()
a.NoError(err)
baseAcct := accountList[0].Address
walletHandle, err := client.GetUnencryptedWalletHandle()
a.NoError(err)
acct0, err := client.GenerateAddress(walletHandle)
a.NoError(err)
status, err := client.Status()
a.NoError(err)
// Transfer some money to acct0, as well as other random accounts to
// fill up the Merkle tree with more than one element.
for i := 0; i < 10; i++ {
accti, err := client.GenerateAddress(walletHandle)
a.NoError(err)
_, err = client.SendPaymentFromUnencryptedWallet(baseAcct, accti, 1000, 10000000, nil)
a.NoError(err)
}
tx, err := client.SendPaymentFromUnencryptedWallet(baseAcct, acct0, 1000, 10000000, nil)
a.NoError(err)
for i := 0; i < 10; i++ {
accti, err := client.GenerateAddress(walletHandle)
a.NoError(err)
_, err = client.SendPaymentFromUnencryptedWallet(baseAcct, accti, 1000, 10000000, nil)
a.NoError(err)
}
txid := tx.ID()
confirmedTx, err := fixture.WaitForConfirmedTxn(status.LastRound+10, baseAcct, txid.String())
a.NoError(err)
proofresp, err := client.TxnProof(txid.String(), confirmedTx.ConfirmedRound)
a.NoError(err)
var proof []crypto.Digest
proofconcat := []byte(proofresp.Proof)
for len(proofconcat) > 0 {
var d crypto.Digest
copy(d[:], proofconcat)
proof = append(proof, d)
proofconcat = proofconcat[len(d):]
}
blk, err := client.BookkeepingBlock(confirmedTx.ConfirmedRound)
a.NoError(err)
merkleNode := []byte(protocol.TxnMerkleLeaf)
merkleNode = append(merkleNode, txid[:]...)
merkleNode = append(merkleNode, proofresp.Stibhash...)
elems := make(map[uint64]crypto.Digest)
elems[proofresp.Idx] = crypto.Hash(merkleNode)
err = merklearray.Verify(blk.TxnRoot, elems, proof)
a.NoError(err)
}
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