// Copyright 2015 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 core
import (
"fmt"
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/beacon"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/trie"
)
func TestGenerateWithdrawalChain(t *testing.T) {
var (
keyHex = "9c647b8b7c4e7c3490668fb6c11473619db80c93704c70893d3813af4090c39c"
key, _ = crypto.HexToECDSA(keyHex)
address = crypto.PubkeyToAddress(key.PublicKey) // 658bdf435d810c91414ec09147daa6db62406379
aa = common.Address{0xaa}
bb = common.Address{0xbb}
funds = big.NewInt(0).Mul(big.NewInt(1337), big.NewInt(params.Ether))
config = *params.AllEthashProtocolChanges
gspec = &Genesis{
Config: &config,
Alloc: GenesisAlloc{address: {Balance: funds}},
BaseFee: big.NewInt(params.InitialBaseFee),
Difficulty: common.Big1,
GasLimit: 5_000_000,
}
gendb = rawdb.NewMemoryDatabase()
signer = types.LatestSigner(gspec.Config)
db = rawdb.NewMemoryDatabase()
)
config.TerminalTotalDifficultyPassed = true
config.TerminalTotalDifficulty = common.Big0
config.ShanghaiTime = u64(0)
// init 0xaa with some storage elements
storage := make(map[common.Hash]common.Hash)
storage[common.Hash{0x00}] = common.Hash{0x00}
storage[common.Hash{0x01}] = common.Hash{0x01}
storage[common.Hash{0x02}] = common.Hash{0x02}
storage[common.Hash{0x03}] = common.HexToHash("0303")
gspec.Alloc[aa] = GenesisAccount{
Balance: common.Big1,
Nonce: 1,
Storage: storage,
Code: common.Hex2Bytes("6042"),
}
gspec.Alloc[bb] = GenesisAccount{
Balance: common.Big2,
Nonce: 1,
Storage: storage,
Code: common.Hex2Bytes("600154600354"),
}
genesis := gspec.MustCommit(gendb, trie.NewDatabase(gendb, trie.HashDefaults))
chain, _ := GenerateChain(gspec.Config, genesis, beacon.NewFaker(), gendb, 4, func(i int, gen *BlockGen) {
tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(address), address, big.NewInt(1000), params.TxGas, new(big.Int).Add(gen.BaseFee(), common.Big1), nil), signer, key)
gen.AddTx(tx)
if i == 1 {
gen.AddWithdrawal(&types.Withdrawal{
Validator: 42,
Address: common.Address{0xee},
Amount: 1337,
})
gen.AddWithdrawal(&types.Withdrawal{
Validator: 13,
Address: common.Address{0xee},
Amount: 1,
})
}
if i == 3 {
gen.AddWithdrawal(&types.Withdrawal{
Validator: 42,
Address: common.Address{0xee},
Amount: 1337,
})
gen.AddWithdrawal(&types.Withdrawal{
Validator: 13,
Address: common.Address{0xee},
Amount: 1,
})
}
})
// Import the chain. This runs all block validation rules.
blockchain, _ := NewBlockChain(db, nil, gspec, nil, beacon.NewFaker(), vm.Config{}, nil, nil)
defer blockchain.Stop()
if i, err := blockchain.InsertChain(chain); err != nil {
fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err)
return
}
// enforce that withdrawal indexes are monotonically increasing from 0
var (
withdrawalIndex uint64
head = blockchain.CurrentBlock().Number.Uint64()
)
for i := 0; i < int(head); i++ {
block := blockchain.GetBlockByNumber(uint64(i))
if block == nil {
t.Fatalf("block %d not found", i)
}
if len(block.Withdrawals()) == 0 {
continue
}
for j := 0; j < len(block.Withdrawals()); j++ {
if block.Withdrawals()[j].Index != withdrawalIndex {
t.Fatalf("withdrawal index %d does not equal expected index %d", block.Withdrawals()[j].Index, withdrawalIndex)
}
withdrawalIndex += 1
}
}
}
func ExampleGenerateChain() {
var (
key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
key3, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
addr1 = crypto.PubkeyToAddress(key1.PublicKey)
addr2 = crypto.PubkeyToAddress(key2.PublicKey)
addr3 = crypto.PubkeyToAddress(key3.PublicKey)
db = rawdb.NewMemoryDatabase()
genDb = rawdb.NewMemoryDatabase()
)
// Ensure that key1 has some funds in the genesis block.
gspec := &Genesis{
Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)},
Alloc: GenesisAlloc{addr1: {Balance: big.NewInt(1000000)}},
}
genesis := gspec.MustCommit(genDb, trie.NewDatabase(genDb, trie.HashDefaults))
// This call generates a chain of 5 blocks. The function runs for
// each block and adds different features to gen based on the
// block index.
signer := types.HomesteadSigner{}
chain, _ := GenerateChain(gspec.Config, genesis, ethash.NewFaker(), genDb, 5, func(i int, gen *BlockGen) {
switch i {
case 0:
// In block 1, addr1 sends addr2 some ether.
tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil), signer, key1)
gen.AddTx(tx)
case 1:
// In block 2, addr1 sends some more ether to addr2.
// addr2 passes it on to addr3.
tx1, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(1000), params.TxGas, nil, nil), signer, key1)
tx2, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr3, big.NewInt(1000), params.TxGas, nil, nil), signer, key2)
gen.AddTx(tx1)
gen.AddTx(tx2)
case 2:
// Block 3 is empty but was mined by addr3.
gen.SetCoinbase(addr3)
gen.SetExtra([]byte("yeehaw"))
case 3:
// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
b2 := gen.PrevBlock(1).Header()
b2.Extra = []byte("foo")
gen.AddUncle(b2)
b3 := gen.PrevBlock(2).Header()
b3.Extra = []byte("foo")
gen.AddUncle(b3)
}
})
// Import the chain. This runs all block validation rules.
blockchain, _ := NewBlockChain(db, DefaultCacheConfigWithScheme(rawdb.HashScheme), gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
defer blockchain.Stop()
if i, err := blockchain.InsertChain(chain); err != nil {
fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err)
return
}
state, _ := blockchain.State()
fmt.Printf("last block: #%d\n", blockchain.CurrentBlock().Number)
fmt.Println("balance of addr1:", state.GetBalance(addr1))
fmt.Println("balance of addr2:", state.GetBalance(addr2))
fmt.Println("balance of addr3:", state.GetBalance(addr3))
// Output:
// last block: #5
// balance of addr1: 989000
// balance of addr2: 10000
// balance of addr3: 19687500000000001000
}