// 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 . 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 := ðconfig.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") } } }