Official Go implementation of the Ethereum protocol
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go-ethereum/eth/catalyst/simulated_beacon_test.go

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4.6 KiB

// Copyright 2023 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package catalyst
import (
"context"
"math/big"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/eth/ethconfig"
"github.com/ethereum/go-ethereum/miner"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/params"
)
func startSimulatedBeaconEthService(t *testing.T, genesis *core.Genesis) (*node.Node, *eth.Ethereum, *SimulatedBeacon) {
t.Helper()
n, err := node.New(&node.Config{
P2P: p2p.Config{
ListenAddr: "127.0.0.1:8545",
NoDiscovery: true,
MaxPeers: 0,
},
})
if err != nil {
t.Fatal("can't create node:", err)
}
ethcfg := &ethconfig.Config{Genesis: genesis, SyncMode: downloader.FullSync, TrieTimeout: time.Minute, TrieDirtyCache: 256, TrieCleanCache: 256, Miner: miner.DefaultConfig}
ethservice, err := eth.New(n, ethcfg)
if err != nil {
t.Fatal("can't create eth service:", err)
}
simBeacon, err := NewSimulatedBeacon(1, ethservice)
if err != nil {
t.Fatal("can't create simulated beacon:", err)
}
n.RegisterLifecycle(simBeacon)
if err := n.Start(); err != nil {
t.Fatal("can't start node:", err)
}
ethservice.SetSynced()
return n, ethservice, simBeacon
}
// send 20 transactions, >10 withdrawals and ensure they are included in order
// send enough transactions to fill multiple blocks
func TestSimulatedBeaconSendWithdrawals(t *testing.T) {
var withdrawals []types.Withdrawal
txs := make(map[common.Hash]types.Transaction)
var (
// testKey is a private key to use for funding a tester account.
testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
// testAddr is the Ethereum address of the tester account.
testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
)
// short period (1 second) for testing purposes
var gasLimit uint64 = 10_000_000
genesis := core.DeveloperGenesisBlock(gasLimit, &testAddr)
node, ethService, mock := startSimulatedBeaconEthService(t, genesis)
_ = mock
defer node.Close()
chainHeadCh := make(chan core.ChainHeadEvent, 10)
subscription := ethService.BlockChain().SubscribeChainHeadEvent(chainHeadCh)
defer subscription.Unsubscribe()
// generate some withdrawals
for i := 0; i < 20; i++ {
withdrawals = append(withdrawals, types.Withdrawal{Index: uint64(i)})
if err := mock.withdrawals.add(&withdrawals[i]); err != nil {
t.Fatal("addWithdrawal failed", err)
}
}
// generate a bunch of transactions
signer := types.NewEIP155Signer(ethService.BlockChain().Config().ChainID)
for i := 0; i < 20; i++ {
tx, err := types.SignTx(types.NewTransaction(uint64(i), common.Address{}, big.NewInt(1000), params.TxGas, big.NewInt(params.InitialBaseFee), nil), signer, testKey)
if err != nil {
t.Fatalf("error signing transaction, err=%v", err)
}
txs[tx.Hash()] = *tx
if err := ethService.APIBackend.SendTx(context.Background(), tx); err != nil {
t.Fatal("SendTx failed", err)
}
}
includedTxs := make(map[common.Hash]struct{})
var includedWithdrawals []uint64
timer := time.NewTimer(12 * time.Second)
for {
select {
case evt := <-chainHeadCh:
for _, includedTx := range evt.Block.Transactions() {
includedTxs[includedTx.Hash()] = struct{}{}
}
for _, includedWithdrawal := range evt.Block.Withdrawals() {
includedWithdrawals = append(includedWithdrawals, includedWithdrawal.Index)
}
// ensure all withdrawals/txs included. this will take two blocks b/c number of withdrawals > 10
if len(includedTxs) == len(txs) && len(includedWithdrawals) == len(withdrawals) && evt.Block.Number().Cmp(big.NewInt(2)) == 0 {
return
}
case <-timer.C:
t.Fatal("timed out without including all withdrawals/txs")
}
}
}